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)
10/1991
10/01/1991US5053866 Method and an associated apparatus for calibrating a color digital hardcopy device
10/01/1991US5053818 Method and apparatus for copying semi-transparent originals using a black backing member
10/01/1991US5053793 Electrographic marking with dithered stylus group boundaries to eliminate striations
10/01/1991US5053619 Variable density scanning apparatus
10/01/1991US5053615 Correction algorithm for contiguous CCD elements leakage
10/01/1991US5052785 Color liquid crystal shutter having more green electrodes than red or blue electrodes
10/01/1991US5052776 Optical waveguide and an image sensor using the same
10/01/1991US5052771 Integrated electro-optical scanner
10/01/1991US5052668 Automatic paper supplying and feeding mechanism in a video printer
10/01/1991CA2039492A1 Still store system and method with simple image access
10/01/1991CA1290051C Telecommunication system with burst and continuous audio signals
09/1991
09/26/1991DE4108990A1 Facsimile machine with automatic paper sorting - has roller feed system with controlled handling to deliver sorted sheets
09/26/1991DE4034488C1 Scanning system for electro=optical mosaic detector - has image offsetting plate facing magnetic drive and positioning system for rotating and tilting
09/25/1991EP0448470A2 Image processing apparatus and method with image reduction capability
09/25/1991EP0448405A2 Data communication apparatus using memory means for error detection
09/25/1991EP0448330A1 Method and apparatus for processing image
09/25/1991EP0448312A2 Shared facsimile-telephone communication device
09/25/1991EP0448311A2 Image encoding and recording apparatus
09/25/1991EP0448275A2 Optical document scanning system
09/25/1991EP0448250A1 Image data processing
09/25/1991EP0448226A2 Encoding image data
09/25/1991EP0448123A1 Scanning optical device
09/25/1991EP0448106A2 Apparatus and method of processing image
09/25/1991EP0448104A2 Multi-color image forming apparatus
09/25/1991EP0448102A1 Methods of compression and expansion of dot pattern
09/25/1991EP0448024A2 Image forming apparatus comprising a skew processing circuit
09/25/1991EP0447871A2 Method of correcting image signal
09/25/1991EP0447691A1 A scanning exposure device
09/25/1991EP0447644A1 Beam splitter/combiner with path length compensator
09/25/1991EP0447536A1 Image processing work station.
09/25/1991EP0447524A1 Apparatus for scanning transparent phosphors
09/25/1991EP0365538B1 Method for reading out an image signal stored in a transparent photostimulable phosphor
09/25/1991CN1054843A Color image processing apparatus
09/24/1991US5051902 Method and apparatus for radiation image processing and x-ray image processing, including spatial frequency filtering to improve graininess
09/24/1991US5051844 Digital halftoning with error diffusion
09/24/1991US5051843 Digital copier
09/24/1991US5051842 Image processing apparatus for mixing weighted continuous-tone and unsharp image signals to reduce visible noise in reproduced images
09/24/1991US5051841 Process for providing digital halftone images with random error diffusion
09/24/1991US5051839 Digital copier
09/24/1991US5051838 Portable electronic copying machine
09/24/1991US5051835 Digital processing of theatrical film
09/24/1991US5051819 Colored image reading apparatus
09/24/1991US5051788 Light-emitting apparatus
09/24/1991US5051779 Job control sheet for image processing system
09/24/1991US5051775 Image forming apparatus provided with a device for covering and uncovering a sheet magazine
09/24/1991US5051762 Production of images using an array of light emitting diodes
09/24/1991US5051757 Optical scanning with cylindrical lens and beam slit
09/24/1991US5051755 Thermal printing apparatus
09/24/1991US5051588 Radiation image read-out apparatus
09/24/1991US5050990 Variable detector geometry for resolving and sensing apparatus for filtering and other applications
09/24/1991CA1289614C Electronic printing method
09/19/1991WO1991014336A1 Electronic printing camera
09/19/1991WO1991014335A1 A system which includes apparatus for transmitting messages to receiving apparatus
09/19/1991WO1991014334A1 Electronic still camera providing multi-format storage of full and reduced resolution images
09/19/1991WO1991014206A1 Electrostatic information recording medium
09/19/1991WO1991014192A1 Beam position sensor for a light beam scanner
09/19/1991DE4108307A1 Colour electric still-picture camera - uses high capacity magnetic disc recording device for video processing device output signals
09/19/1991DE4008098A1 Illumination body with reflector enclosing fluorescent tube - has light outlet aperture slot formed by curving reflector ends oppositely to reflector body with smaller radius of curvature
09/19/1991CA2078113A1 Electric printing camera
09/18/1991EP0447328A2 Scalar data processing method and apparatus
09/18/1991EP0447264A2 Color facsimile apparatus
09/18/1991EP0447262A1 Facsimile apparatus
09/18/1991EP0447253A2 Method and terminal equipment for processing incoming messages
09/18/1991EP0447252A1 Image communication method and apparatus
09/18/1991EP0447247A2 Image encoding method and apparatus
09/18/1991EP0447234A2 Data compression and decompression system and method
09/18/1991EP0447068A2 Motion image data compression system
09/18/1991EP0446914A2 Method for electronic color processing
09/18/1991EP0446891A2 Laser beam controller
09/18/1991EP0446861A1 Photoelectric conversion device
09/18/1991EP0446812A2 Photosensor and image scanner utilizing the same
09/18/1991EP0446674A2 Recording and reproducing system
09/18/1991EP0446608A2 Variable pel density print head for electrophotographic printers
09/18/1991EP0446384A1 X-ray diagnostic apparatus with a storming luminance screen
09/18/1991EP0446209A1 Adaptive transform coding system.
09/18/1991CN1054679A Apparatus and method for image processing
09/17/1991US5050223 Method of and apparatus for processing image signal
09/17/1991US5050208 Relaying destination and designation system
09/17/1991US5050007 Image-scanning apparatus and method therefor
09/17/1991US5050006 Multi-address calling system
09/17/1991US5050005 Facsimile apparatus
09/17/1991US5050004 Facsimile machine transmission rate fall-back arrangement
09/17/1991US5050003 Image processing apparatus capable of displaying a plurality of screens
09/17/1991US5050001 Printing system with liquid crystal shutter matrix panel
09/17/1991US5050000 Error diffusion of subcells in digital halftoning
09/17/1991US5049999 Compact multimode input and output scanner
09/17/1991US5049996 Still-video camera for inhibiting read-out of a video signal when the shutter is open
09/17/1991US5049990 Highly efficient coding apparatus
09/17/1991US5049986 Method and apparatus for color image quantization
09/17/1991US5049985 Color images reading apparatus having transformation table formed base on average values of plural color component signals
09/17/1991US5049932 Copier having an editing function
09/17/1991US5049900 Knurled roller film transport and realted method
09/17/1991US5049897 Method and apparatus for beam displacement in a light beam scanner
09/17/1991US5049747 Radiation image recording and reproducing system
09/17/1991US5048904 Two-mirror scanner with pincushion error correction
09/17/1991CA2037827A1 Method for electronic color processing
09/15/1991CA2038131A1 System for compression and decompression of video data using discrete cosine transform and coding techniques
09/11/1991EP0446159A1 Pay-controlled device for a facsimile
09/11/1991EP0446029A1 Image compression
09/11/1991EP0446019A2 Image processing apparatus and method
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