Patents 5557246 - 5557499

 

 

Patent 5557246: Half wavelengh and quarter wavelength dielectric resonators coupled through side surfaces
(WAVE TRANSMISSION LINES AND NETWORKS : COUPLING NETWORKS : Wave filters including long line elements : Coaxial : Tunable)

Patent 5557247: Radio frequency volume coils for imaging and spectroscopy
(WAVE TRANSMISSION LINES AND NETWORKS : RESONATORS (DISTRIBUTED PARAMETER TYPE) : Waveguide type)

Patent 5557248: Magnetizer for magnets with shaped magnetic waveform
(ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS : MAGNETS AND ELECTROMAGNETS : For magnetizing or demagnetizing : Coil shape, structure or material)

Patent 5557249: Load balancing transformer
(INDUCTOR DEVICES : POLYPHASE :)

Patent 5557250: Telecommunications terminal block
(ELECTRICAL RESISTORS : RESISTANCE VALUE RESPONSIVE TO A CONDITION : Current and/or voltage (e.g., ballast resistor) : Voltage surge-responsive or lightning arrester type :)

Patent 5557251: Thermistor with electrodes for preventing inter-electrode migration
(ELECTRICAL RESISTORS : RESISTANCE VALUE RESPONSIVE TO A CONDITION : Current and/or voltage (e.g., ballast resistor) : Thermistor type :)

Patent 5557252: Thick film circuit board and method of manufacturing the same
(ELECTRICAL RESISTORS : MECHANICALLY VARIABLE (E.G., RHEOSTAT) : Resistance value varied by removing or adding material : With intervening connector between contact and element (e.g., taps))

Patent 5557253: Officiating communication device
(COMMUNICATIONS: ELECTRICAL : SYSTEMS : Portable self-contained (e.g., movie usher's signalling flashlight) : Automatic rebalancing)

Patent 5557254: Programmable vehicle monitoring and security system having multiple access verification devices
(COMMUNICATIONS: ELECTRICAL : LAND VEHICLE ALARMS OR INDICATORS : Of burglary or unauthorized use : Remote alarm : Using GPS (i.e., location) : Off course, route re-search)

Patent 5557255: Antitheft device for a vehicle and method of installing the same
(COMMUNICATIONS: ELECTRICAL : LAND VEHICLE ALARMS OR INDICATORS : Of burglary or unauthorized use : Including specified sensor : Ignition switch : Off course, route re-search)

Patent 5557256: Tire pressure loss indicating device
(COMMUNICATIONS: ELECTRICAL : LAND VEHICLE ALARMS OR INDICATORS : Internal alarm or indicator responsive to a condition of the vehicle : Tire deflation or inflation : Accessory (e.g., speaker, radio face plate, etc.))

Patent 5557257: Programmable emergency signalling system for a vehicle
(COMMUNICATIONS: ELECTRICAL : LAND VEHICLE ALARMS OR INDICATORS : External signal light system : With audible signal : Portable signal)

Patent 5557258: Method and apparatus for warning of potential harm to an underground utility conveyance
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Radio)

Patent 5557259: Proximity alert and direction indicator
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Human or animal : House arrest system, wandering, or wrong place : Specified device housing or attachment means)

Patent 5557260: System for the monitoring and detection of heat sources in open areas
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Flame : By radiant energy : Specified device housing or attachment means)

Patent 5557261: Ice monitoring and detection system
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Ice formation : By ionization or conductivity)

Patent 5557262: Fire alarm system with different types of sensors and dynamic system parameters
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Thermal : False alarm resistant : Specified device housing or attachment means)

Patent 5557263: System for detection of electrically conductive fluids
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Fluent material : Leakage : Bridge circuit)

Patent 5557265: Method and system for indicating an optical transmit amplifier fault
(COMMUNICATIONS: ELECTRICAL : CONDITION RESPONSIVE INDICATING SYSTEM : Specific condition : Condition of electrical apparatus : Gas)

Patent 5557266: System for cascading data switches in a communication node
(COMMUNICATIONS: ELECTRICAL : SELECTIVE : Tree or cascade : Having specified mounting structure)

Patent 5557267: Apparatus and methods for measurement system calibration
(COMMUNICATIONS: ELECTRICAL : CONTINUOUSLY VARIABLE INDICATING (E.G., TELEMETERING) : With calibration : Having plural transmitters)

Patent 5557268: Automatic vehicle recognition and customer automobile diagnostic system
(COMMUNICATIONS: ELECTRICAL : VEHICLE DETECTORS : Pivoted)

Patent 5557269: Interactive braille apparatus
(CODED DATA GENERATION OR CONVERSION : BODILY ACTUATED CODE GENERATOR : Including keyboard or keypad : Having optical waveguide)

Patent 5557270: Dual conversion decoder
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : With rotary dial)

Patent 5557271: Variable length coder and variable length decoder
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : To or from variable length codes : To or from Morse code)

Patent 5557272: Non-volatile serial-to-parallel converter system utilizing thin-film, floating-gate, amorphous transistors
(CODED DATA GENERATION OR CONVERSION : DIGITAL CODE TO DIGITAL CODE CONVERTERS : Serial to parallel : Binary to Gray)

Patent 5557273: Magnetic azimuth detector to digital (MAD) converter
(CODED DATA GENERATION OR CONVERSION : PHASE OR TIME OF PHASE CHANGE : Synchro or resolver signal : Analog resolver or synchro signal to digital signal : With rollover feature (i.e., antidoublestrike))

Patent 5557274: Ad converter and magnetic recording/regenerating apparatus using the same
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Analog to digital conversion : Using ladder network)

Patent 5557275: Error-tolerant binary encoder
(CODED DATA GENERATION OR CONVERSION : ANALOG TO OR FROM DIGITAL CONVERSION : Analog to digital conversion : Analog input compared with static reference : Parallel type : Including priority encoder :)

Patent 5557276: Quantizer designed by using human visual sensitivity
(CODED DATA GENERATION OR CONVERSION : QUANTIZER : With rotary distributor)

Patent 5557277: Method for locating leakage of substances from subterranean structures
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : TRANSMISSION THROUGH MEDIA OTHER THAN AIR OR FREE SPACE : Detection of surveilance)

Patent 5557278: Airport integrated hazard response apparatus
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : AIRCRAFT COLLISION AVOIDANCE SYSTEM (CAS) : By motion detection)

Patent 5557279: Unitarily-tuned transponder/shield assembly
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR TRANSPONDER SYSTEM : Secondary Surveilance Radar (SSR) or Air Traffic Control Radar Beacon System (ATCRBS))

Patent 5557280: Synchronized electronic identification system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : RADAR TRANSPONDER SYSTEM : Unique identity : With defruiting or degarbling)

Patent 5557281: Device for measuring the velocity of vehicles for traffic monitoring
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DETERMINING VELOCITY : Combined with determining sense of motion (i.e., approaching or receding) : With plural frequencies transmission)

Patent 5557282: Height finding antenna apparatus and method of operation
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DETERMINING DISTANCE : Height finder : FM type)

Patent 5557283: Real-time wideband holographic surveillance system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : WITH PARTICULAR CIRCUIT : Display : Image production : With CRT display)

Patent 5557284: Spoofing detection system for a satellite positioning system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Including a satellite : With position indicating : With accuracy enhancing : Using differential correction :)

Patent 5557285: Gimbal control system
(COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION) : DIRECTIVE : Including antenna orientation : With satellite signal correction)

Patent 5557286: Voltage tunable dielectric ceramics which exhibit low dielectric constants and applications thereof to antenna structure
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Microstrip : Reflector or director)

Patent 5557287: Self-latching antenna field coupler
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : With radio cabinet :)

Patent 5557288: Antenna housing with extendable drawer for a portable computer
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : With radio cabinet :)

Patent 5557289: Window glass antenna device for automobiles
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : With vehicle : Supported by vehicle body :)

Patent 5557290: Coupling apparatus between coaxial cables and antenna system using the coupling apparatus
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : With vehicle : Supported by vehicle body :)

Patent 5557291: Multiband, phased-array antenna with interleaved tapered-element and waveguide radiators
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Plural separate diverse type : Light)

Patent 5557292: Multiple band folding antenna
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Wave guide type (e.g., horn) : With external reflector or director : Plural reflectors :)

Patent 5557293: Multi-loop antenna
(COMMUNICATIONS: RADIO WAVE ANTENNAS : ANTENNAS : Loop type : Plural; plural or tapped coils : Including long line element)

Patent 5557294: Emergency signal device
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : PLURAL PHYSICAL DISPLAY ELEMENT CONTROL SYSTEM (E.G., NON-CRT) : Optical means interposed in viewing path (e.g., filters, lens, etc.) : Addressing)

Patent 5557295: Display panel
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : PLURAL PHYSICAL DISPLAY ELEMENT CONTROL SYSTEM (E.G., NON-CRT) : Segmented display elements : Bar graph : Electroluminescent display elements : Photosensor encoder)

Patent 5557296: Flat-panel type picture display device with insulating electron-propagation ducts
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : PLURAL PHYSICAL DISPLAY ELEMENT CONTROL SYSTEM (E.G., NON-CRT) : Display elements arranged in matrix (e.g., rows and columns) : Cathodolulminescent type : Color)

Patent 5557297: System for displaying calligraphic video on raster displays
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS PROCESSING : Attributes (surface detail or characteristic, display attributes) : Anti-aliasing or image smoothing : Pixel fragment : Change in number of bits for a designated color (e.g., 4 bits to 8 bits, 8 bits to 4 bits))

Patent 5557298: Method for specifying a video window's boundary coordinates to partition a video signal and compress its components
(DATA PROCESSING: PRESENTATION PROCESSING OF DOCUMENT, OPERATOR INTERFACE PROCESSING, AND SCREEN SAVER DISPLAY PROCESSING : OPERATOR INTERFACE (E.G., GRAPHICAL USER INTERFACE) : On-screen workspace or object : Window or viewpoint : Virtual input device (e.g., virtual keyboard))

Patent 5557299: Method and apparatus for a learning styled computer keyboard
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY PERIPHERAL INTERFACE INPUT DEVICE : Including keyboard : Trackball)

Patent 5557300: Functional display apparatus
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY PERIPHERAL INTERFACE INPUT DEVICE : Including keyboard : Light source associated with each key : Optical detector)

Patent 5557301: Graphic drawing system
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY PERIPHERAL INTERFACE INPUT DEVICE : Stylus : With alignment or calibration capability (i.e., parallax problem))

Patent 5557302: Method and apparatus for displaying video data on a computer display
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : COMPUTER GRAPHICS DISPLAY MEMORY SYSTEM : Frame buffer : Multi-format frame buffer : Data transfer between system memory display memory)

Patent 5557303: Thermal recording apparatus which can draw black borders
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Plural beam scan : Specific optical structure : Including switching means)

Patent 5557304: Spot size modulatable ink jet printhead
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Controller : Of ejector : Creating plural tones : Full-line array)

Patent 5557305: Ink jet purging arrangement
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Controller : Of temperature or pressure of device or component thereof : Creating plural tones)

Patent 5557306: Ink jet printer with a cleaning apparatus for removing hardened ink from a nozzle plate of a print head
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : With cleaning or protector : Wiping : Movement)

Patent 5557307: Continuous cleaning thread for inkjet printing nozzle
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : With cleaning or protector : Mist or dust removal : Movement)

Patent 5557308: Ink jet print head photoresist layer having durable adhesion characteristics
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : Drop-on-demand : With thermal force ejection : Composite ejector : Flow path : Integrated)

Patent 5557309: Ink jet printhead assembly having aligned dual internal channel
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Ejector mechanism (i.e., print head) : Drop-on-demand : With piezoelectric force ejection : Layers, plates : Flow path)

Patent 5557310: Ink container with ring-shaped ink absorbing member
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : INK JET : Fluid or fluid source handling means : Fluid supply system : Cartridge : With integral ejector : Drop sensors)

Patent 5557311: Multi-page signatures made using laser perforated bond papers
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : ELECTRIC MARKING APPARATUS OR PROCESSES : Housing)

Patent 5557312: Thermal recording and erasing apparatus
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : By electrochemical)

Patent 5557313: Wear-resistant protective film for thermal head and method of producing the same
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : THERMAL MARKING APPARATUS OR PROCESSES : Specific resistance recording element type : Protective layer : Using pulse width modulation)

Patent 5557314: Exposure method and pattern data preparation system therefor, pattern data preparation method and mask as well as exposure apparatus
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Cathode ray device : Having optical means interposed between the screen of the cathode ray device and the record receiver : Including switching means)

Patent 5557315: Digital printer using a modulated white light exposure source
(INCREMENTAL PRINTING OF SYMBOLIC INFORMATION : LIGHT OR BEAM MARKING APPARATUS OR PROCESSES : Scan of light : Plural beam scan : Specific optical structure : Specific lens : For detecting color)

Patent 5557316: System for distributing broadcast television services identically on a first bandwidth portion of a plurality of express trunks and
(INTERACTIVE VIDEO DISTRIBUTION SYSTEMS : VIDEO DISTRIBUTION SYSTEM WITH UPSTREAM COMMUNICATION : Server or headend : Link transmission (e.g., URL sent to user))

Patent 5557317: Video-on-demand system with program relocation center
(INTERACTIVE VIDEO DISTRIBUTION SYSTEMS : USER-REQUESTED VIDEO PROGRAM SYSTEM : Video-on-demand : Server or headend : Mass storage : Combined at local receiver)

Patent 5557318: Method and apparatus for permitting a viewer to scan through a plurality of video signals provided by a transmitter
(INTERACTIVE VIDEO DISTRIBUTION SYSTEMS : USER-REQUESTED VIDEO PROGRAM SYSTEM : Video-on-demand : Server or headend : Control process : Combined at local receiver)

Patent 5557319: Subscriber return system for CATV full service networks
(INTERACTIVE VIDEO DISTRIBUTION SYSTEMS : VIDEO DISTRIBUTION SYSTEM WITH UPSTREAM COMMUNICATION : Transmission network : Detail of use of two-way spectrum : Noise in return path)

Patent 5557320: Video mail delivery system
(INTERACTIVE VIDEO DISTRIBUTION SYSTEMS : VIDEO DISTRIBUTION SYSTEM WITH UPSTREAM COMMUNICATION : Server or headend : Link transmission (e.g., URL sent to user))

Patent 5557321: Fundus camera or opthalmic apparatus comprising a flash light source system
(TELEVISION : SPECIAL APPLICATIONS : Human body observation : Eye : Color sequential illumination)

Patent 5557322: Telecines with simultaneous scanning of a plurality of frames
(TELEVISION : SPECIAL APPLICATIONS : Film, disc or card scanning : Motion picture film scanner : Flying spot scanner : Flying spot scanner)

Patent 5557323: Distance measuring apparatus
(TELEVISION : SPECIAL APPLICATIONS : Object or scene measurement : Distance by apparent target size (e.g., stadia, etc.) : Including line to line comparison)

Patent 5557324: Polorization viewer
(COMPUTER GRAPHICS PROCESSING AND SELECTIVE VISUAL DISPLAY SYSTEMS : DISPLAY DRIVING CONTROL CIRCUITRY : Light detection means (e.g., with photodetector) : Having common base or substrate)

Patent 5557325: Video camera and its control method
(TELEVISION : CAMERA, SYSTEM AND DETAIL : Combined image signal generator and general image signal processing : Color balance (e.g., white balance) : Video teleconferencing (including access or authorization))

Patent 5557326: Method and apparatus for producing a false color image
(TELEVISION : CAMERA, SYSTEM AND DETAIL : With single image scanning device supplying plural color signals : Solid-state multicolor image sensor : With moving color filters)

Patent 5557327: Image input apparatus with two-dimensional pixel shift
(TELEVISION : CAMERA, SYSTEM AND DETAIL : Optics : With optics peculiar to solid-state sensor : Exclusively dichroic elements)

Patent 5557328: Video camera having an improved zoom system
(TELEVISION : CAMERA, SYSTEM AND DETAIL : Combined image signal generator and general image signal processing : Zoom : Optical zoom : Details of communication between memory and camera)

Patent 5557329: Video camera having rotating mechanism for rotating image pickup with respect to the camera and a lens mount
(TELEVISION : CAMERA, SYSTEM AND DETAIL : Support or housing : Flash or strobe)

Patent 5557330: Encoding video signals using selective pre-filtering
(TELEVISION : BANDWIDTH REDUCTION SYSTEM : Data rate reduction : Specified color signal : Direct coding of color composite signal : Predictive coding : Contrast)

Patent 5557331: Image encoding method, an image encoding circuit, an image encoding apparatus, and an optical disk
(PULSE OR DIGITAL COMMUNICATIONS : BANDWIDTH REDUCTION OR EXPANSION : Television or motion video signal : Predictive : Bidirectional : Subband coding)

Patent 5557332: Apparatus and method for reproducing a prediction-encoded video signal
(PULSE OR DIGITAL COMMUNICATIONS : BANDWIDTH REDUCTION OR EXPANSION : Television or motion video signal : Predictive : Motion vector : Subband coding)

Patent 5557333: System for transparent transmission and reception of a secondary data signal with a video signal in the video band
(TELEVISION : FORMAT : Including additional information : Pulse code modulation)

Patent 5557334: Apparatus for tracking the flow of video signals by incorporating patterns of machine readable signals which will appear at predetermined
(TELEVISION : FORMAT : Including additional information : Pulse code modulation)

Patent 5557335: Time base corrector for video signal
(TELEVISION : SYNCHRONIZATION : Locking of video or audio to reference timebase : Including demodulator)

Patent 5557336: Video recording and/or reproducing apparatus that records a signal indicating aspect ratio
(TELEVISION : BASIC RECEIVER WITH ADDITIONAL FUNCTION : Multimode (e.g., composite, Y, C; baseband RF) : For receiving more than one format at will (e.g., NTSC/PAL) : For format with different aspect ratio : Locking rates)

Patent 5557337: Automatic television signal detector to differentiate NTSC signals from HDJV/AJV signals
(TELEVISION : BASIC RECEIVER WITH ADDITIONAL FUNCTION : Multimode (e.g., composite, Y, C; baseband RF) : Format detection : Color processing)

Patent 5557338: Television receiver using received channel guide information and a secondary video signal processor for displaying secondary channel
(INTERACTIVE VIDEO DISTRIBUTION SYSTEMS : OPERATOR INTERFACE : To facilitate tuning or selection of video signal : Combined with detecting VCR operation)

Patent 5557339: Screen filtering boundary detection for noise filtering prior to image compositing
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Special effects : Combining plural sources : Foreground/background insertion : Color signal)

Patent 5557340: Noise reduction in video signals
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Transition or edge sharpeners : Including processing to prevent the addition of noise (e.g., coring enhancement signal, noise responsive peaking control) : Coring type)

Patent 5557341: Iterative method for estimating motion content in video signals using successively reduced block size
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Motion vector generation : Diode)

Patent 5557342: Video display apparatus for displaying a plurality of video signals having different scanning frequencies and a multi-screen display system
(TELEVISION : IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION : Switching : receiver type : Level derived within feedback path)

Patent 5557343: Optical system including a reflecting polarizer for a rear projection picture display apparatus
(TELEVISION : VIDEO DISPLAY : Projection device : Cathode-ray tube image source : With optical element : With optical element)

Patent 5557344: Multi-beam group electron gun for color CRT
(TELEVISION : VIDEO DISPLAY : Cathode-ray tube : Color TV : Separate electron beams in single tube : Folding)

Patent 5557345: Interchangeable tethered glasses
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : SPECTACLES AND EYEGLASSES : Pince-nez type (including pince-nez bridges, nose grips and nose pads therefor) : With ear chain or temple : Spring biased)

Patent 5557346: System and method for key escrow encryption
(CRYPTOGRAPHY : KEY MANAGEMENT : Key escrow or recovery : User-to-user key distributed over data link (i.e., no center))

Patent 5557347: Ballistic missile boresight and inertial tracking system and method
(OPTICS: MEASURING AND TESTING : ANGLE MEASURING OR ANGULAR AXIAL ALIGNMENT : Automatic following or aligning while indicating measurement : With photodetection of reflected beam angle with respect to a unidirectional source beam : With source beam moving to follow or align : Of transmission (e.g., lens))

Patent 5557348: Progressive power lens
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : SPECTACLES AND EYEGLASSES : Ophtahalmic lenses or blanks : Multifocal : Gradually varying focal power : Spring between lens and strap)

Patent 5557349: Fundus camera for infrared fluorsein angiography
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : EYE EXAMINING OR TESTING INSTRUMENT : Objective type : Including eye photography :)

Patent 5557350: Ophthalmometric apparatus with alignment device including filter means
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : EYE EXAMINING OR TESTING INSTRUMENT : Objective type : Including eye photography : Having means to detect proper distance or alignment (i.e., eye to instrument) :)

Patent 5557351: Apparatus for obtaining visual images of cornea cells and method for displaying imaging-position around cornea for the apparatus
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : EYE EXAMINING OR TESTING INSTRUMENT : Objective type : Including illuminator : On rotary disc)

Patent 5557352: Method and apparatus for measuring the visual acuity of the human eye during and immediately after ocular surgery
(OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING : EYE EXAMINING OR TESTING INSTRUMENT : Subjective type : Including target image projection : Movable along optical axis)

Patent 5557353: Pixel compensated electro-optical display system
(OPTICS: IMAGE PROJECTORS : DISTORTION COMPENSATION : Reflector between lamp and screen)

Patent 5557354: Camera equipped with data imprinting device
(PHOTOGRAPHY : WITH DATA RECORDING : Optical : Having transfer strip)

Patent 5557355: High output magnetic head with small physical dimensions
(PHOTOGRAPHY : WITH DATA RECORDING : Magnetically on film or film cassette : Segmented alphanumeric indicia)

Patent 5557356: Lens-fitted photographic film unit
(PHOTOGRAPHY : DISPOSABLE OR RECYCLABLE CAMERA : Object support)

Patent 5557357: Camera having anti-vibration function with improved connection and placement of anti-vibration components
(PHOTOGRAPHY : CAMERA SHAKE SENSING : With accelerometer : And means to move film)

Patent 5557358: Camera having an electronic viewfinder for displaying an object image under different photographic conditions
(PHOTOGRAPHY : HAVING CAMERA INDICATOR : Having display in viewfinder : Having plural pointers or match needle)

Patent 5557359: Camera including shutter control and method
(PHOTOGRAPHY : CAMERA DETAIL : Shutter : Release or actuator means : Plural oscillating blades)

Patent 5557360: Apparatus for controlling an operation of a shutter
(PHOTOGRAPHY : CAMERA DETAIL : Diaphragm shutter unit : Shutter charging lever on lens housing)

Patent 5557361: Device for setting camera information using a reduced number of operating members
(PHOTOGRAPHY : HAVING CAMERA INDICATOR : Nonmechanical visual display : Double exposure warning)

Patent 5557362: Silver halide photosensitive material automatic developing apparatus
(PHOTOGRAPHY : FLUID-TREATING APPARATUS : Having fluid-circulating means : And fluid spraying means : Plural stations)

Patent 5557363: CMOS-analog IC for controlling camera and camera system using the same
(PHOTOGRAPHY : WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS : Processing circuit : Automatic area selection)

Patent 5557364: Eye direction detecting apparatus
(PHOTOGRAPHY : EYE TRACKING : Including film processing tank)

Patent 5557365: Camera attached with auxiliary device
(PHOTOGRAPHY : BATTERY INSERTION/REMOVAL/DEPLETION RESPONSIVE : Having indicator : Electro-optical element)

Patent 5557366: Strobe control device for camera
(PHOTOGRAPHY : WITH OBJECT ILLUMINATION FOR EXPOSURE : Having artificial illumination termination control : For red-eye reduction)

Patent 5557367: Method and apparatus for optimizing scheduling in imaging devices
(ELECTROPHOTOGRAPHY : DIAGNOSTICS : Unacceptable copy coverage : Electrostatic)

Patent 5557368: Toner level detecting device and method for detecting toner level within a toner storage box
(ELECTROPHOTOGRAPHY : DIAGNOSTICS : Consumable : Toner : Misstrip of copy)

Patent 5557369: Recording apparatus with detection of manually inserted recording sheet
(ELECTROPHOTOGRAPHY : COMBINED WITH DIVERSE SUBJECT MATTER :)

Patent 5557370: Control device for a feed roller
(ELECTROPHOTOGRAPHY : DIAGNOSTICS : With diverse image formation)

Patent 5557371: Electrophotographic apparatus
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Photoconductive member : To produce outline image)

Patent 5557372: Contact charger and image forming apparatus provided with same
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Charging : Contact : Needle type)

Patent 5557373: Cleaning system for charging drum of an image forming apparatus
(ELECTROPHOTOGRAPHY : DIAGNOSTICS : With diverse image formation)

Patent 5557374: Contact charger having a selected perpendicular resistivity
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Charging : Contact : Needle type)

Patent 5557375: Contact type charging device and image forming apparatus having the same
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Charging : Contact : Needle type)

Patent 5557376: Color imaging system
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Plural diverse (e.g., color) : Liquid : Opposite polarity)

Patent 5557377: Single pass, in-line color electrophotographic printer with interspersed erase device
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Exposure : Having image editing : Having halftone screen)

Patent 5557378: Liquid immersion development machine having a pressure differential nip apparatus
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Liquid development : Application member (e.g., roller, belt) : Opposite polarity)

Patent 5557379: Image forming apparatus having a toner conveyance regulator
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Applicator speed : Bias voltage)

Patent 5557380: Apparatus for developing an electrostatic latent image having limiting blade holding device
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Dry development : Supplying new toner : Metering (regulating, gate, discharge ports) : Optical detector)

Patent 5557381: Developer supplying unit with multiple containers
(ELECTROPHOTOGRAPHY : HAVING PARTICULAR STRUCTURE : Modular or displaceable : Process cartridge unit : Developer seal)

Patent 5557382: Toner replenishing device for a developing device
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Dry development : Supplying new toner : Cartridge : Optical detector)

Patent 5557383: Image forming apparatus having recording material carrying means
(ELECTROPHOTOGRAPHY : CONTROL OF ELECTROPHOTOGRAPHY PROCESS : Responsive to number of copies or passage of time : Single detector for plural toners)

Patent 5557384: Image transferring device for image forming equipment
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Transfer : Electrostatic : Roller or belt : Having belt transporting copy)

Patent 5557385: Method and device for controlling thermal fixing machine
(ELECTROPHOTOGRAPHY : CONTROL OF ELECTROPHOTOGRAPHY PROCESS : Control of fixing : Temperature control : Detection of toner in developing unit)

Patent 5557386: Toner recovering device for electrophotographic apparatus and toner recovering filter for said toner recovering device
(ELECTROPHOTOGRAPHY : DIAGNOSTICS : Component present or mounted : Electrostatic)

Patent 5557387: Sheet conveying device using sheet suction and air forced separation
(ELECTROPHOTOGRAPHY : DOCUMENT HANDLING : Copy : Holder)

Patent 5557388: Printing or copying machine having a cooling device for the recording substrate
(ELECTROPHOTOGRAPHY : INTERNAL MACHINE ENVIRONMENT : Forced air circulation : Supplying power to charger)

Patent 5557389: Device for separating a transfer paper utilizing a separation voltage
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Transfer : Electrostatic : Having discharger (e.g., separation) : Having belt transporting copy)

Patent 5557390: Digital copier system
(ELECTROPHOTOGRAPHY : MACHINE OPERATION : Job mode : Having mode change : Warmup or standby mode)

Patent 5557391: Image forming apparatus for producing duplex or composite prints with improved efficiency by feeding sheets at shortened intervals
(ELECTROPHOTOGRAPHY : DOCUMENT HANDLING : Copy : Delivering from transfer position : Re-fed for additional image : Claw)

Patent 5557392: Multicolor image forming apparatus with pulse voltage and DC voltage applied to a developing unit
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Plural diverse (e.g., color) : Modifier (e.g., reflector, filter))

Patent 5557393: Process and apparatus for achieving customer selectable colors in an electrostatographic imaging system
(ELECTROPHOTOGRAPHY : IMAGE FORMATION : Development : Plural diverse (e.g., color) : Modifier (e.g., reflector, filter))

Patent 5557394: Color image forming apparatus having a transparent photoreceptor
(ELECTROPHOTOGRAPHY : CONTROL OF ELECTROPHOTOGRAPHY PROCESS : Color balance : Single detector for plural toners : By concentration detector)

Patent 5557395: Optical device for measuring speed
(OPTICS: MEASURING AND TESTING : VELOCITY OR VELOCITY/HEIGHT MEASURING : With light detector (e.g., photocell) : Vibrating or oscillating element)

Patent 5557396: Velocity information detecting apparatus
(OPTICS: MEASURING AND TESTING : VELOCITY OR VELOCITY/HEIGHT MEASURING : With light detector (e.g., photocell) : Of light interference (e.g., interferometer) : With displaced images)

Patent 5557397: Aircraft-based topographical data collection and processing system
(OPTICS: MEASURING AND TESTING : RANGE OR REMOTE DISTANCE FINDING : With photodetection : Of pulse transit time : Having different frequency sources)

Patent 5557398: Photometric device
(OPTICS: MEASURING AND TESTING : BY DISPERSED LIGHT SPECTROSCOPY : With sample excitation (e.g., burning) : By light : Monochromatic (e.g., laser) : Including an alternating reference path)

Patent 5557399: Optical gap measuring apparatus and method
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : Having polarization : For dimensional measurement : Alignment)

Patent 5557400: Multiplexed sensing using optical coherence reflectrometry
(OPTICS: MEASURING AND TESTING : FOR OPTICAL FIBER OR WAVEGUIDE INSPECTION : Lamp attachments)

Patent 5557401: Optical masking apparatus
(OPTICS: MEASURING AND TESTING : FOR OPTICAL FIBER OR WAVEGUIDE INSPECTION : Lamp attachments)

Patent 5557402: Surface flaw detecting apparatus of workpiece
(OPTICS: MEASURING AND TESTING : INSPECTION OF FLAWS OR IMPURITIES : Surface condition : Having guiding means)

Patent 5557403: System and method for measuring crazing in a transparency
(OPTICS: MEASURING AND TESTING : INSPECTION OF FLAWS OR IMPURITIES : Transparent or translucent material : Surface condition : Of container contents)

Patent 5557404: Spectrophotometer with a system for calibrating a monochromator
(OPTICS: MEASURING AND TESTING : BY DISPERSED LIGHT SPECTROSCOPY : Utilizing a spectrophotometer (i.e., plural beam) : By light)

Patent 5557405: Measurement of droplet size in a photographic dispersion
(OPTICS: MEASURING AND TESTING : FOR SIZE OF PARTICLES : By particle light scattering : Having adjustable color or bandwidth)

Patent 5557406: Signal conditioning unit for fiber optic sensors
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : Using fiber or waveguide interferometer : Lock-in prevention)

Patent 5557407: Measuring apparatus having a diffraction grating for receiving a diverged light beam
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : For dimensional measurement : Displacement or distance : Having wavefront division (e.g., by diffraction) : Having wavefront division (e.g., by diffraction))

Patent 5557408: Method of and system for measurement of direction of surface and refractive index variations using interference fringes
(OPTICS: MEASURING AND TESTING : BY LIGHT INTERFERENCE (E.G., INTERFEROMETER) : For dimensional measurement : Contour or profile : By wavefront detection : Of highly reflective surface (e.g., mirror) : Planar surface :)

Patent 5557409: Characterization of an external silicon interface using optical second harmonic generation
(OPTICS: MEASURING AND TESTING : SURFACE ROUGHNESS : With screen)

Patent 5557410: Method of calibrating a three-dimensional optical measurement system
(OPTICS: MEASURING AND TESTING : SHAPE OR SURFACE CONFIGURATION : Triangulation : Projection of structured light pattern : Pattern is series of non-intersecting lines : Of transmission (e.g., lens))

Patent 5557411: Position detection method
(OPTICS: MEASURING AND TESTING : BY ALIGNMENT IN LATERAL DIRECTION : With registration indicia (e.g., scale) : For comparison with master or desired configuration)

Patent 5557412: Image forming method and apparatus for counterfeit protection using image synthesis accounting for forming conditions
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Recording apparatus : Scanning)

Patent 5557413: Image output apparatus
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Recording apparatus : Scanning)

Patent 5557414: Method and apparatus for classifying articles according to their color
(OPTICS: MEASURING AND TESTING : BY SHADE OR COLOR : With sample responsive to plural colors applied simultaneously : For comparison with master or desired configuration)

Patent 5557415: Apparatus and method for inducing and detecting fluorescence
(OPTICS: MEASURING AND TESTING : BY SHADE OR COLOR : With color transmitting filter : Included with sample excitation : Including liquid filter comparison)

Patent 5557416: Image processing apparatus and method thereof for adding a predetermined pattern to an image
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Recording apparatus : Electrostatic or electrolytic : Document feed)

Patent 5557417: Multi-loop testing apparatus with means for adjusting a reproduced video signal
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Signal amplitude level control : Digital technique)

Patent 5557418: Video tape format for providing special effects capabilities
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Using disc : Optical : Crosstalk)

Patent 5557419: Apparatus for intermittently recording and/or reproducing a time-varying image
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Compressing in recording or decompressing in reproducing : Intraframe or interframe : Including television camera)

Patent 5557420: Method and apparatus for recording video signals on a record medium
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Using disc)

Patent 5557421: Apparatus for programming a video tape recorder
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Including programmable apparatus : Disc)

Patent 5557422: Recording method and apparatus for programming a recording schedule
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Including programmable apparatus : Disc)

Patent 5557423: Synchronization of digital video with digital audio
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Having another signal : Audio signal : By controlling read-write operations)

Patent 5557424: Process for producing works of art on videocassette by computerized system of audiovisual correlation
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Having another signal : Audio signal : Selective mode (e.g., mono, stereo, or bilingual) :)

Patent 5557425: Facsimile device for use in ISDN and method of controlling same
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Auxiliary signal : Telephone number or address of designator : Auxiliary signal controls apparatus at both transmitter and receiver)

Patent 5557426: Image information signal processing apparatus
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Specific signal processing circuitry : Image processing : Auxiliary signal controls apparatus at both transmitter and receiver)

Patent 5557427: Image forming apparatus with means for detecting sheet thickness
(FACSIMILE AND STATIC PRESENTATION PROCESSING : FACSIMILE : Picture signal generator : Scanning : Linear scanning pattern : Document moves during scanning : Internal scan)

Patent 5557428: Color image forming apparatus which changes color image processing based on properties of a recording medium
(FACSIMILE AND STATIC PRESENTATION PROCESSING : NATURAL COLOR FACSIMILE : Image reproduction : Page or frame memory)

Patent 5557429: Image signal processing apparatus
(FACSIMILE AND STATIC PRESENTATION PROCESSING : NATURAL COLOR FACSIMILE : Specific image-processing circuitry : Sharpness emphasizing : With plural sensors)

Patent 5557430: Image processing apparatus generating patterns for colors based on a set relation between colors and patterns and synthesizing patterns with
(FACSIMILE AND STATIC PRESENTATION PROCESSING : NATURAL COLOR FACSIMILE : Image reproduction : Page or frame memory)

Patent 5557431: Real-time compensated imaging system and method using a double-pumped phase-conjugate mirror
(OPTICAL: SYSTEMS AND ELEMENTS : HOLOGRAPHIC SYSTEM OR ELEMENT : Using modulated or plural reference beams : Having nonplanar recording medium surface)

Patent 5557432: Display device and image formation apparatus having first and second lens arrays
(LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS : LIQUID CRYSTAL SYSTEM : Projector including liquid crystal cell (s) : Exposure device for lithography)

Patent 5557433: Transmissive liquid crystal display having prism lens film for light illumination and wave lens film for light diffusion
(LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS : LIQUID CRYSTAL SYSTEM : Projector including liquid crystal cell (s) : Exposure device for lithography)

Patent 5557434: Optical compensator including an o-plate for super-twist nematic liquid crystal display
(LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS : PARTICULAR STRUCTURE : Having significant detail of cell structure only : Compensator or retarder (i.e., not using liquid crystal cell) : Cholesteric reflector)

Patent 5557435: Liquid crystal device and display apparatus
(LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS : PARTICULAR STRUCTURE : Having significant detail of cell structure only : Particular nonoptical film or layer (e.g., adhesive layer, barrier layer) : Alignment layer : Including at least one with negative intrinsic birefringence)

Patent 5557436: Thin seal liquid crystal display and method of making same
(LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS : PARTICULAR STRUCTURE : Having significant detail of cell structure only : Liquid crystal seal : Having connection detail to external circuit)

Patent 5557437: Optical terminal system having self-monitoring function
(OPTICAL COMMUNICATIONS : DIAGNOSTIC TESTING : TDM)

Patent 5557438: Scanning and tracking using rotating polygons
(OPTICAL: SYSTEMS AND ELEMENTS : DEFLECTION USING A MOVING ELEMENT OR MEDIUM (OFFSETTING OR CHANGING AT LEAST A PORTION OF THE BEAM) : Using a periodically moving element (periodic change of optically reflecting, refracting or diffracting element) : Utilizing plural light beams : Having a common axis of rotation)

Patent 5557439: Expandable wavelength division multiplexed optical communications systems
(OPTICAL COMMUNICATIONS : MULTIPLEX : Wavelength division or frequency division (e.g., Raman, Brillouin, etc.) : By optical coupling : Grating : Filter)

Patent 5557440: Noise-insensitive optoencoding techniques with compensation for device variations
(OPTICAL COMMUNICATIONS : TRANSMITTER : Including compensation : Pulse modulation)

Patent 5557441: Soliton transmission system having plural sliding-frequency guiding filter groups
(OPTICAL COMMUNICATIONS : TRANSMITTER AND RECEIVER SYSTEM : Including optical waveguide : Soliton : Redundant fibers)

Patent 5557442: Optical amplifiers with flattened gain curves
(OPTICAL: SYSTEMS AND ELEMENTS : OPTICAL AMPLIFIER : Dielectric optical waveguide type)

Patent 5557443: Optical communication method and optical remote controller
(OPTICAL COMMUNICATIONS : DIAGNOSTIC TESTING : Determination of communication parameter : Using supervisory signal : Dispersion)

Patent 5557444: Miniature optical scanner for a two axis scanning system
(OPTICAL: SYSTEMS AND ELEMENTS : DEFLECTION USING A MOVING ELEMENT OR MEDIUM (OFFSETTING OR CHANGING AT LEAST A PORTION OF THE BEAM) : Using a periodically moving element (periodic change of optically reflecting, refracting or diffracting element) : Particular mount or driver for element : Particular oscillating driver :)

Patent 5557445: Optical signal transmitter having an apc circuit with automatic bias current control
(OPTICAL COMMUNICATIONS : TRANSMITTER : Including compensation : Including feedback : For power control : Filter)

Patent 5557446: Optical scanning apparatus having tilted scanning lens system
(OPTICAL: SYSTEMS AND ELEMENTS : DEFLECTION USING A MOVING ELEMENT OR MEDIUM (OFFSETTING OR CHANGING AT LEAST A PORTION OF THE BEAM) : Using a periodically moving element (periodic change of optically reflecting, refracting or diffracting element) : Having particular focusing element to receive scanned light : High distortion lens (e.g., fO lens, etc.) :)

Patent 5557447: Optical scanner for finite conjugate applications
(OPTICAL: SYSTEMS AND ELEMENTS : DEFLECTION USING A MOVING ELEMENT OR MEDIUM (OFFSETTING OR CHANGING AT LEAST A PORTION OF THE BEAM) : Using a periodically moving element (periodic change of optically reflecting, refracting or diffracting element) : Having particular focusing element to receive scanned light : Concave reflector :)

Patent 5557448: Optical scanner
(OPTICAL: SYSTEMS AND ELEMENTS : DEFLECTION USING A MOVING ELEMENT OR MEDIUM (OFFSETTING OR CHANGING AT LEAST A PORTION OF THE BEAM) : Using a periodically moving element (periodic change of optically reflecting, refracting or diffracting element) : Having particular focusing element to receive scanned light : Concave reflector :)

Patent 5557449: Laser beam scanning apparatus for controlling diameter of light spot
(OPTICAL: SYSTEMS AND ELEMENTS : DEFLECTION USING A MOVING ELEMENT OR MEDIUM (OFFSETTING OR CHANGING AT LEAST A PORTION OF THE BEAM) : Using a periodically moving element (periodic change of optically reflecting, refracting or diffracting element) : Including reflective type moving element : Having moving prism)

Patent 5557450: Optical rotation encoder for X-Y direction input device
(OPTICAL: SYSTEMS AND ELEMENTS : LIGHT CONTROL BY OPAQUE ELEMENT OR MEDIUM MOVABLE IN OR THROUGH LIGHT PATH : With rotating or pivoting element (e.g., scanning discs) : String or ribbon type)

Patent 5557451: Document processing with infra-red extraction
(OPTICAL: SYSTEMS AND ELEMENTS : HAVING SIGNIFICANT INFRARED OR ULTRAVIOLET PROPERTY : Beam combination or separation)

Patent 5557452: Confocal microscope system
(OPTICAL: SYSTEMS AND ELEMENTS : COMPOUND LENS SYSTEM : Microscope : Two or more in a series)

Patent 5557453: Microscope that displays superimposed data
(OPTICAL: SYSTEMS AND ELEMENTS : COMPOUND LENS SYSTEM : Microscope : With plural optical axes : Plural oculars : Binocular : Stereoscopic : Diverse layer)

Patent 5557454: Stereoscopic endoscope
(OPTICAL: SYSTEMS AND ELEMENTS : COMPOUND LENS SYSTEM : Microscope : With plural optical axes : Plural oculars : Binocular : Stereoscopic : With single or parallel objectives : For viewing stereo pairs :)

Patent 5557455: Angular adjustment mechanism
(OPTICAL: SYSTEMS AND ELEMENTS : COMPOUND LENS SYSTEM : Microscope : With rotatable adjustment : Focus adjustment)

Patent 5557456: Personal interface device for positioning of a microscope stage
(OPTICAL: SYSTEMS AND ELEMENTS : COMPOUND LENS SYSTEM : Microscope : Stage or slide carrier : With plural transverse movements : Binocular)

Patent 5557457: Folding binocular apparatus and binocular blank
(OPTICAL: SYSTEMS AND ELEMENTS : COMPOUND LENS SYSTEM : Telescope : Binocular : Foldable or collapsible : Extensible structure)

Patent 5557458: Real image finder optical system
(OPTICAL: SYSTEMS AND ELEMENTS : COMPOUND LENS SYSTEM : With relay : With prism or U-shaped optical path)

Patent 5557459: Optical convergence accommodation assembly
(OPTICAL: SYSTEMS AND ELEMENTS : STEREOSCOPIC : With right and left channel discriminator (e.g., polarized or colored light) : Using polarized light : Stereoscopic imaging or three dimensional imaging)

Patent 5557460: Two sided marker
(OPTICAL: SYSTEMS AND ELEMENTS : SIGNAL REFLECTOR : 3-Corner retroreflective (i.e., cube corner, trihedral, or triple reflector type) : Unitary plate or sheet comprising plural reflecting elements : Wind driven)

Patent 5557461: Omnidirectional retro-reflective roadway marker and the like
(OPTICAL: SYSTEMS AND ELEMENTS : SIGNAL REFLECTOR : Mounted on roadway : Bicycle or motorcycle)

Patent 5557462: Dual silver layer Low-E glass coating system and insulating glass units made therefrom
(OPTICAL: SYSTEMS AND ELEMENTS : LIGHT INTERFERENCE : Produced by coating or lamina : Including metal or conductive layer : Laminated or layered)

Patent 5557463: Eyepiece
(OPTICAL: SYSTEMS AND ELEMENTS : LENS : Eyepiece : Having two components : With additional reflector (e.g., serial reflections, etc.))

Patent 5557464: Wide-field eyepiece lens system
(OPTICAL: SYSTEMS AND ELEMENTS : LENS : Eyepiece : Having two components : With additional reflector (e.g., serial reflections, etc.))

Patent 5557465: Laser plate making apparatus
(OPTICAL: SYSTEMS AND ELEMENTS : LENS : Anamorphic : With prism anamorphoser : In a variable media (e.g., gas, elastomer, etc.))

Patent 5557466: Two-wavelength antireflection film
(OPTICAL: SYSTEMS AND ELEMENTS : LIGHT INTERFERENCE : Produced by coating or lamina : Layers having specified index of refraction : Laminated or layered)

Patent 5557467: Combination rearview mirror
(OPTICAL: SYSTEMS AND ELEMENTS : GLARE OR UNWANTED LIGHT REDUCTION : With mirror (e.g., mirror with glare screen, etc.) : Anti-glare mirror : Adjustable : Plural reflecting surfaces : Spacing of optical elements axially adjustable)

Patent 5557468: Chromatic dispersion compensation device
(OPTICAL: SYSTEMS AND ELEMENTS : LIGHT DISPERSION : With absorption means)

Patent 5557469: Beamsplitter in single fold optical system and optical variable magnification method and system
(OPTICAL: SYSTEMS AND ELEMENTS : LENS : With variable magnification (e.g., zoom type) : With mechanical compensation : Having seven or less components)

Patent 5557470: Zoom lens system
(OPTICAL: SYSTEMS AND ELEMENTS : LENS : With variable magnification (e.g., zoom type) : With mechanical compensation : Four groups : + - + + Arrangement : Having crossed axes)

Patent 5557471: Lens for depositing target material on a substrate
(OPTICAL: SYSTEMS AND ELEMENTS : LENS : Including a nonspherical surface : Conical : With macro type focusing)

Patent 5557472: Fast aspherical lens system
(OPTICAL: SYSTEMS AND ELEMENTS : LENS : Reverse telephoto : With seven components : Having curvilinear lens)

Patent 5557473: Wide angle lens
(OPTICAL: SYSTEMS AND ELEMENTS : LENS : Multiple component lenses : Six components : First component positive : With concave and convex reflectors in series)

Patent 5557474: Passive thermal compensation method and apparatus
(OPTICAL: SYSTEMS AND ELEMENTS : LENS : With support : Lens mounts : With temperature compensation or control : With third component biconvex)

Patent 5557475: Optical system for improving the symmetry of the beam emitted from a broad area laser diode
(OPTICAL: SYSTEMS AND ELEMENTS : PRISM (INCLUDING MOUNT) : With support)

Patent 5557476: Foldable outside rearview mirror
(OPTICAL: SYSTEMS AND ELEMENTS : MIRROR : Retractable vehicle mirror : Plural reflecting surfaces)

Patent 5557477: Apparatus for and method of correcting for aberrations in a light beam
(OPTICAL: SYSTEMS AND ELEMENTS : MIRROR : Including specified control or retention of the shape of a mirror surface : Plural reflecting surfaces)

Patent 5557478: Nonimaging radiant energy device
(OPTICAL: SYSTEMS AND ELEMENTS : MIRROR : Plural mirrors or reflecting surfaces : Composite or echelon mirrors or light concentrating array : Light concentrating (e.g., heliostat, etc.), concave, or paraboloidal structure : Bayonet coupling)

Patent 5557479: Apparatus and method for recording and reproducing digital video signal data by dividing the data and encoding it on multiple coding paths
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : CONVERTING AN ANALOG SIGNAL TO DIGITAL FORM FOR RECORDING; REPRODUCING AND RECONVERTING : Frequency)

Patent 5557480: Recording and/or reproducing apparatus for displaying data differently in recording and reproduction
(TELEVISION SIGNAL PROCESSING FOR DYNAMIC RECORDING OR REPRODUCING : PROCESSING OF TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING : Having another signal : Digital technique)

Patent 5557481: NRZ to RLL encoder circuit in disk drive read/write channel
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : GENERAL PROCESSING OF A DIGITAL SIGNAL : In specific code or form : Nonreturn to zero :)

Patent 5557482: Multipath channel apparatus and method for data storage devices and communications systems wherein a data path is selected based on errors
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : GENERAL PROCESSING OF A DIGITAL SIGNAL : Data verification : With incremental movement between record and head)

Patent 5557483: Tape end detection device
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : AUTOMATIC CONTROL OF A RECORDER MECHANISM : Controlling the record : Stopping or reversing : Responsive to physical property of record : Photoelectric : By signal derived from transport)

Patent 5557484: Differentiation of media types via leader block characteristics which include a plurality of leader block retrieval members
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : RECORD TRANSPORT WITH HEAD STATIONARY DURING TRANSDUCING : Tape record : Tape in container : With tape extraction : Drum)

Patent 5557485: Alignment and latching mechanism in a drive for magnetic data tape mini-cartridges
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : RECORD TRANSPORT WITH HEAD STATIONARY DURING TRANSDUCING : Tape record : Tape in container : Plural reels : Container mounting details : With common capstan drive)

Patent 5557486: Thin external memory unit with hard disk
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : RECORD TRANSPORT WITH HEAD STATIONARY DURING TRANSDUCING : Disk record : Tape in container)

Patent 5557487: Disk storage drive having particular diameter relationship and axial compactness
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : RECORD TRANSPORT WITH HEAD STATIONARY DURING TRANSDUCING : Disk record : Rotational drive detail : Motorized)

Patent 5557488: Gimbaled micro-head/flexure/conductor assembly and system
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : HEAD MOUNTING : Disk record : Electrical connection detail : Flexible printed circuit type : Pivot/load button detail)

Patent 5557489: Flexible cable for floating type magnetic head device
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : HEAD MOUNTING : Disk record : Electrical connection detail : Flexible printed circuit type : Pivot/load button detail)

Patent 5557490: Method of manufacturing an actuator arm with a steel sleeve for thermal off track compensation
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : HEAD MOUNTING : For shifting head between tracks : Disk record : Arcuate head movement : Bearing : Voice coil)

Patent 5557491: Two terminal single stripe orthogonal MR head having biasing conductor integral with the lead layers
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : HEAD : Magnetoresistive (MR) reproducing head : Having Anisotropic Magnetoresistive (AMR) sensor formed of a single thin film : Detail of transverse biasing : Using conductor : Voice coil adjuster)

Patent 5557492: Thin film magnetoresistive head with reduced lead-shield shorting
(DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL : HEAD : Magnetoresistive (MR) reproducing head : Detail of magnetic shielding : In horizontal head configuration)

Patent 5557493: Method of adjusting linearity
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : CONTROL CIRCUITS FOR ELECTROMAGNETIC DEVICES : Systems for magnetizing, demagnetizing, or controlling the magnetic field : Demagnetizing : Calibration or permanent magnet)

Patent 5557494: Drive circuit of an electromagnetic device
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : CONTROL CIRCUITS FOR ELECTROMAGNETIC DEVICES : Systems for magnetizing, demagnetizing, or controlling the magnetic field : Including particular drive circuit : Magnetic tape)

Patent 5557495: Variable capacitor and method
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : ELECTROSTATIC CAPACITORS : Variable : Mechanically variable : By varying effective area of electrode : Rotary plates : Details of plate feature : Details of insulator feature)

Patent 5557496: Rechargeable electric power supply device
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : ELECTROLYTIC SYSTEMS OR DEVICES : For switch or fuse)

Patent 5557497: Capacitor with a double electric layer
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : ELECTROLYTIC SYSTEMS OR DEVICES : Double layer electrolytic capacitor : Plural)

Patent 5557498: Switching apparatus including a displaceable disconnecting device and an auxiliary circuit
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : HOUSING OR MOUNTING ASSEMBLIES WITH DIVERSE ELECTRICAL COMPONENTS : Fixed capacitor)

Patent 5557499: Hard-disk drive tray assembly with pivotally rotatable front bezel
(ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES : HOUSING OR MOUNTING ASSEMBLIES WITH DIVERSE ELECTRICAL COMPONENTS : For electronic systems and devices : Computer related support : Memory unit support : Disk drive support : With plug-in circuit breakers)

 

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