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)
08/1991
08/27/1991US5043820 Focal plane array readout employing one capacitive feedback transimpedance amplifier for each column
08/27/1991US5043816 Electronic still camera including photographing timing control
08/27/1991US5043758 Dual film and still video photofinishing system using parallel dedicated magnetic tracks on film
08/27/1991US5043749 Printing press and method
08/27/1991US5043745 Light intensity control apparatus
08/27/1991US5043744 Raster scanner including scanning beam tilt correction
08/27/1991US5043743 Method and apparatus for the image-wise exposure of light-sensitive medium by a plurality of light valves
08/27/1991US5043719 Matrix circuit
08/27/1991US5043632 TFEL edge emitter structure with uniform light emission filter
08/27/1991US5043569 Optical system of laser beam reader
08/27/1991US5043566 Monitor mechanism for use with a scanning optical apparatus with composite drawing a monitoring beams
08/22/1991WO1991013515A1 Video telephone system
08/22/1991WO1991012686A1 Digital halftoning with correlated minimum visual modulation patterns
08/22/1991WO1991012540A1 Tone-scale generation method and apparatus for digital x-ray images
08/22/1991WO1991010327A3 Apparatus and method for quantizing and/or reconstructing multi-dimensional digital image signals
08/22/1991WO1991010313A3 False density contour suppression using randomly modified input signals for comparison to threshold values
08/22/1991WO1991010312A3 False density contour suppression using stored random probabilities to form print/no print decisions
08/22/1991WO1991009490A3 Improved dot printer and method for grey level recording
08/22/1991WO1991009489A3 Mixed matrix image processing for rendering halftone images with variable dot sizes
08/22/1991DE4005174A1 Punctiform document scanning for image processing - detects mean value of brightness-proportional image signal for stray light compensation
08/22/1991DE4004948A1 Automatic correction of electronic pictures - using histogram equalisation to remove picture density errors during image processing
08/22/1991CA2076364A1 Video telephone system
08/21/1991EP0442707A2 Information processing apparatus capable of connecting printer
08/21/1991EP0442699A2 A colour separation scanner
08/21/1991EP0442682A2 System and method for displaying of colour images
08/21/1991EP0442649A1 Converting vector image data into raster image data
08/21/1991EP0442548A1 Variable length coding and decoding devices for digital data
08/21/1991EP0442541A2 Image forming system
08/21/1991EP0442526A2 A copying machine equipped with an image editor
08/21/1991EP0442506A2 Image reading device
08/21/1991EP0442369A2 Gradation correcting apparatus
08/21/1991EP0442201A2 Image communication apparatus and image communication method
08/21/1991EP0442054A2 Method and apparatus for adaptive image processing
08/21/1991EP0442041A2 Integrated digital signal processor/general purpose CPU with shared internal memory
08/21/1991EP0441899A1 Automatic color balancing in a film to video transfer system
08/21/1991EP0267241B1 Recirculating document feeder
08/21/1991CN2083365U Control device of simplex wireless three-grades facsimile
08/21/1991CN1013633B Data compression using block list transform
08/20/1991US5042078 Method of effecting gradation and color correction of a composite image
08/20/1991US5042074 Method for determining subdivision patterns of radiation images
08/20/1991US5042061 Still image video telephone transmission system
08/20/1991US5042028 Communication terminal device
08/20/1991US5041920 Image halftone generation by static RAM look-up table
08/20/1991US5041919 Image processing apparatus
08/20/1991US5041918 Facsimile adapter unit
08/20/1991US5041917 Facsimile apparatus adapted to communicate via more than one transmission medium each having different transmission quality
08/20/1991US5041916 Color image data compression and recovery apparatus based on neural networks
08/20/1991US5041915 Facsimile apparatus with controllable pixel density for image formation
08/20/1991US5041914 Image exposure apparatus using CRT as exposure light source
08/20/1991US5041913 Image sensor crosstalk cancelling method
08/20/1991US5041911 Exposure information feedback in electronic and/or hybrid film/electronic cameras
08/20/1991US5041869 Photoelectric scanner
08/20/1991US5041866 Density correcting system for film image reading equipment
08/20/1991US5041851 Spatial light modulator printer and method of operation
08/20/1991US5040872 Beam splitter/combiner with path length compensator
08/20/1991CA1287915C Light piping substrate for contact type image replication
08/14/1991EP0441614A2 Method and apparatus for establishing threshold level in a binary mode document scanner
08/14/1991EP0441609A2 Color correction for photographic reproduction
08/14/1991EP0441608A2 Photographic image reproduction using digital halftoning
08/14/1991EP0441586A2 Image processing apparatus
08/14/1991EP0441575A2 Color image processing apparatus
08/14/1991EP0441558A1 Improvements relating to control data arrays
08/14/1991EP0441541A2 Photoelectric converting device
08/14/1991EP0441535A2 Method and apparatus for locating the document referencing corner in a document scanner
08/14/1991EP0441414A2 Image processing system
08/14/1991EP0441345A1 High-definition still picture camera
08/14/1991EP0441305A2 A color image processing apparatus
08/14/1991EP0441055A2 Method and apparatus for reducing the turn-around time in facsimile transmission
08/14/1991EP0441039A2 Paper cartridge for facsimile machine
08/14/1991EP0441038A2 Facsimile cartridge system
08/14/1991EP0440939A2 Polyphenylene ether-polyamide compositions from dicarboxylate-capped polyphenylene ethers
08/14/1991EP0440912A2 Masked combinations of video slices for computer display
08/14/1991EP0440876A2 Color signal converting circuit
08/14/1991EP0440786A1 A computer based digital image noise reduction method based on overlapping planar approximation
08/14/1991EP0440780A1 Digital image noise reduction of luminance and chrominance based on overlapping planar approximation
08/13/1991US5040233 Data compression by discarding portions of data
08/13/1991US5040232 Information processing apparatus using a data format converter
08/13/1991US5040206 Communication apparatus having driving mechanism and speaker-phone
08/13/1991US5040142 Method of editing and circulating an electronic draft document amongst reviewing persons at remote terminals attached to a local area network
08/13/1991US5040129 Data processor for generating character image
08/13/1991US5040128 Image processing apparatus
08/13/1991US5040080 Electronic screening
08/13/1991US5040079 Image forming system
08/13/1991US5040078 Image processing apparatus displaying boundaries of an original image
08/13/1991US5040077 Facsimile apparatus comprising automatic communication mode
08/13/1991US5040075 Digital electrophotographic copying apparatus
08/13/1991US5040074 Full-width simultaneous read/write copier
08/13/1991US5040073 Method of transmitting pictures and an arrangement for performing the method
08/13/1991US5040059 Method and apparatus of image mensuration with selectively visible and invisible reseau grid marks
08/13/1991US5040041 Semiconductor device and signal processing device having said device provided therein
08/13/1991US5040031 Image processing apparatus which can control output to multiple devices to accommodate differing operating timing of those devices
08/13/1991US5040003 Method and apparatus for recording color with plural printheads
08/13/1991US5039998 Printing control system for laser printer
08/13/1991US5039854 Fluorescent radiation collector for image scanner
08/13/1991US5039847 Image processing apparatus having an image scanner
08/13/1991US5039038 Railroad communication system
08/09/1991CA2031158A1 Facsimile cartridge system
08/09/1991CA2031153A1 Plain paper cartridge for facsimile machine
08/09/1991CA2031151A1 Thermal paper cartridge for facsimile machine
08/08/1991WO1991011878A1 Production of test prints from a full page image buffer
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