Patents
Sitemap › H04 - Electric communication technique › H04N - Pictorial communication, e.g. television › H04N 1 - Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
Patents for H04N 1 - Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof (142,802)
03/1991
03/21/1991WO1991003795A1 Digital image noise reduction of luminance and chrominance based on overlapping planar approximation
03/21/1991WO1991002426A3 Rapid variable angle digital screening
03/20/1991EP0417914A2 Decoding and coding apparatus for compressed digital video data
03/20/1991EP0417856A1 Device for optically scanning a document
03/20/1991EP0417806A2 Method of recording halftone dot image
03/20/1991EP0417625A2 Data pick-up method using a detector array comprising at least one detector line, and apparatus carrying out the method
03/20/1991EP0417362A1 Data/facsimile telephone subset apparatus incorporating electrophoretic display
03/20/1991EP0417109A1 Dynamic printing enhancement
03/19/1991US5001768 Image reading apparatus
03/19/1991US5001766 Apparatus and method for skew control of document images
03/19/1991US5001750 Secret communication control apparatus
03/19/1991US5001749 Thermally-activated receiving medium for use in a facsimile transmission system
03/19/1991US5001577 Document reading apparatus for use in a facsimile system
03/19/1991US5001576 Image processor with improved discrimination between character image and tonal image
03/19/1991US5001575 Apparatus and method for image reproduction by random selector of interpolation data
03/19/1991US5001574 Image processing system
03/19/1991US5001572 Facsimile equipment
03/19/1991US5001571 Method and system for selecting frame size of image data in data transmission
03/19/1991US5001569 Image filing apparatus
03/19/1991US5001567 Recording apparatus
03/19/1991US5001566 Document reading apparatus
03/19/1991US5001559 Transform coding using coefficient prediction techniques
03/19/1991US5001499 Light scanning apparatus and image forming apparatus utilizing same
03/19/1991US5001410 Driving system for stepping motor
03/19/1991US5001341 Horizontal sync signal generating device for use in optical printer
03/19/1991US5000570 Optical system for stagger compensation in an optical scanner
03/19/1991CA2025504A1 Method and device for the protected transmission of data
03/19/1991CA1281765C Circuit for controlling thermal heads of printing apparatus
03/19/1991CA1281764C Thermal printer with printing plate making mode
03/14/1991DE4028010A1 Digital picture conversion procedure
03/13/1991EP0417042A1 Photoelectric scanning device
03/13/1991EP0416985A1 Method of multiplexing a sound signal with an analogue video signal and corresponding distribution system for still images with sound
03/13/1991EP0416927A2 Image reader and color separation device
03/13/1991EP0416886A2 Image recording apparatus
03/13/1991EP0416833A2 Color image encoding
03/13/1991EP0416832A2 Image forming apparatus
03/13/1991EP0416830A2 Facsimile apparatus
03/13/1991EP0416828A2 Image scanning apparatus
03/13/1991EP0416657A2 Image writing device
03/13/1991EP0416654A2 Color scanner
03/13/1991EP0416598A2 Facsimile apparatus
03/13/1991EP0416596A2 Facsimile apparatus
03/13/1991EP0416121A1 Printer that effects gradation recording
03/13/1991EP0362204B1 Covering and cleaning device for the optical character generator in an electrophotographic printing device
03/13/1991EP0258341B1 Method for digital data transmission
03/12/1991US4999791 Computer graphics color film recording method and apparatus
03/12/1991US4999718 Image processing apparatus with interference suppression
03/12/1991US4999717 Image reading apparatus
03/12/1991US4999716 Facsimile communication method and facsimile machine
03/12/1991US4999715 Dual processor image compressor/expander
03/12/1991US4999714 Still video camera having video synchronized to drive motor phase
03/12/1991US4999653 Venetian blinding
03/12/1991US4999651 Multi-color recorder with plural ink jets and reservoirs co-mounted on a reciprocating carriage, each reservoir containing a sub-reservoir in communication with an ink supply conduit
03/12/1991US4999648 Non-contact optical print head for image writing apparatus
03/12/1991US4999646 Method for enhancing the uniformity and consistency of dot formation produced by color ink jet printing
03/12/1991US4999629 Two tone and multiple image discrimination and signal binarization system
03/12/1991US4999497 Radiation image read-out and reproducing method and apparatus
03/12/1991US4999484 Multi-chip type image sensor
03/12/1991US4999077 Method of fabricating full width scanning or imaging arrays from subunits
03/12/1991US4998835 Computer controlled timer for main drive pulse of form feed motor
03/12/1991US4998806 Image reading apparatus
03/12/1991CA1281444C Facsimile apparatus
03/12/1991CA1281410C Color image processor
03/12/1991CA1281363C Color image processing apparatus
03/07/1991WO1991003119A1 Highlighting of document to be telecopied
03/07/1991WO1991003115A1 A system and method for forwarding facsimile messages
03/07/1991WO1991001609A3 Technique for representing sampled images
03/07/1991WO1991001507A3 Mount for an optical device
03/07/1991DE3929273A1 Photographic recording system esp. for passport photographs - has self service booth with automatic adjustment to suit user
03/06/1991EP0415903A2 Imaging recorder
03/06/1991EP0415888A1 Photoelectric scanner
03/06/1991EP0415798A2 Image processing apparatus
03/06/1991EP0415795A2 Method of fabricating full width scanning or imaging arrays from subunits
03/06/1991EP0415754A1 An image forming apparatus
03/06/1991EP0415725A2 Image recording apparatus
03/06/1991EP0415723A2 Automatic switching apparatus between data and speech communication
03/06/1991EP0415722A2 Image forming apparatus
03/06/1991EP0415661A2 Image processing apparatus
03/06/1991EP0415648A2 Image processing apparatus
03/06/1991EP0415578A1 Film transparency holder
03/06/1991EP0415513A2 Image reduction system
03/06/1991EP0415463A2 Procedure for optimization of telecopier communations and telecopier stations utilized therefor
03/06/1991EP0415363A2 Color image reading apparatus
03/06/1991EP0415329A2 Picture image zooming apparatus
03/06/1991EP0415236A2 Optical unit for use in laser beam printer or the like
03/06/1991EP0415234A2 Optical unit for use in laser beam printer or the like
03/06/1991EP0415100A2 Calibration system and method for color image scanning
03/06/1991EP0414882A1 Electronic method and apparatus for stereoscopic photography
03/05/1991USRE33547 Graded facsimile image signal coding system
03/05/1991US4998260 Method for correcting the path of a gas laser beam
03/05/1991US4998257 Semiconductor laser driving apparatus
03/05/1991US4998216 Data processing system
03/05/1991US4998212 Method of filing geographical maps and method of reading the filed maps
03/05/1991US4998173 Facsimile machine for continuously transmitting a plurality of originals
03/05/1991US4998169 Flat-panel display unit for displaying image data from personal computer or the like
03/05/1991US4998165 Software invisible selective monochrome to color signal converter for medical diagnostic imaging
03/05/1991US4998132 Image edit system
03/05/1991US4998122 Image binarization apparatus
03/05/1991US4997178 Method of and mechanism for feeding sheet
03/05/1991US4996775 Image reader guide
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