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)
08/1981
08/11/1981US4283137 Image scanning system
08/06/1981WO1981002206A1 Process for obtaining a better image restitution in the reproduction technique
08/06/1981WO1981002205A1 Process and device for the partial post-correction of the colour recognition domains in the recognition of colours
08/05/1981EP0033106A1 Method for improved picture rendition in reproduction technique
08/05/1981EP0032908A1 Autotypical analysis process of toning values.
08/04/1981US4281904 TIR Electro-optic modulator with individually addressed electrodes
08/04/1981US4281889 Light beam scanning system
08/04/1981CA1106434A1 Ink jet printer for selectively printing different resolutions
07/1981
07/29/1981EP0032704A1 Linear light source fixing device used in a facsimile transmission apparatus
07/29/1981EP0032521A1 Gain setting device for radiation image read out system
07/28/1981US4281312 System to effect digital encoding of an image
07/28/1981US4281254 Self scanned photosensitive array
07/28/1981US4281049 Color separation transparency and process for the preparation thereof
07/28/1981CA1106055A1 Method for transmitting a facsimile signal by sequential edge differential coding
07/23/1981WO1981002083A1 Selective copying apparatus
07/22/1981EP0032237A1 Method of and apparatus for processing a radiographic image
07/21/1981US4280145 Non-linear, multi-speed, bi-directional facsimile subscan drive control
07/21/1981US4280144 Coarse scan/fine print algorithm
07/21/1981US4280143 Method and means for scale-changing an array of boolean coded points
07/21/1981US4279472 Laser scanning apparatus with beam position correction
07/15/1981EP0031952A2 Method of and apparatus for processing a radiation image
07/14/1981US4279003 Picture contrast-increasing arrangements
07/14/1981US4279002 Adapter for raster output scanning printer
07/14/1981US4279000 Photoelectric information input apparatus
07/14/1981US4278999 Moving image scanner
07/14/1981US4278981 Optical printer
07/14/1981US4278347 Cathode-ray tube image recording device
07/14/1981CA1105142A1 Analog to digital wave shaping
07/08/1981EP0031728A2 Method and apparatus for electronically aligning active elements of an imaging array with an optical system
07/08/1981EP0031502A2 Hand-held apparatus for sensing non-coded images
07/08/1981EP0031487A1 Facsimile apparatus and method for restarting a facsimile machine
07/08/1981EP0031418A1 Method and apparatus for transmitting information
07/07/1981US4277805 Combination copying-facsimile reproduction apparatus
07/07/1981US4277138 Diffraction grating and system for the formation of color components
07/07/1981CA1104708A1 Catv sine wave coding system
07/07/1981CA1104503A1 Method of and a system for color separation using scanning light beams
07/01/1981EP0031247A1 Apparatus and method for generating a dispersed dot half tone picture from a continuous tone picture
06/1981
06/30/1981US4276569 Method and apparatus for producing a facsimile gray scale
06/30/1981US4276568 Boosting video signals
06/30/1981US4276567 Recording line elements
06/30/1981US4276544 Code converting circuits
06/30/1981US4276473 Gradation processing method and apparatus for radiation image recording system
06/30/1981US4275968 System for controlling and sequencing a printer
06/30/1981US4275960 System for enhanced light uniformity in a document scanning system
06/30/1981CA1104246A1 Framing signal generator for electrical recorder
06/30/1981CA1104200A1 Print head electrode for metal paper printers
06/25/1981WO1981001767A1 A method for recording signals on bands by means of laser beams and apparatus for carrying out the method
06/24/1981EP0030864A1 Carrier wave recovery circuit
06/24/1981EP0030686A1 Optical element adjustment apparatus and method
06/23/1981US4275450 Magnification/demagnification apparatus and method
06/23/1981US4275423 Original reading device
06/23/1981US4275413 Linear interpolator for color correction
06/23/1981CA1103823A1 Automatic dialer having a recall memory
06/23/1981CA1103738A1 Crossover arrangement for multiple scanning arrays
06/23/1981CA1103732A1 Dot matrix copying apparatus
06/17/1981EP0030437A1 Method and apparatus for compression and decompression of digital image data
06/17/1981EP0030354A2 Arrangement for storing and evaluating images recorded by a recording device operating along the raster method
06/16/1981US4274114 Picture information transmitting method for facsimile
06/16/1981US4274111 Color facsimile signal transmission system
06/16/1981US4274101 Laser recorder with piezoelectric bimorph focal length vibrator
06/16/1981US4273440 Method and apparatus for data collection and preparation
06/16/1981CA1103373A1 Parallel decoding system and method for converting binary data to video form
06/16/1981CA1103355A1 Method for digital ru-length coding with redundance reduction for transmission of binarily coded picture informations
06/10/1981EP0030056A1 Influence probing arrangement and method for its realization
06/10/1981EP0029913A1 Method of coarse scan/fine print reproduction of an original and apparatus for carrying out the method
06/10/1981EP0029877A1 Magnetic printing head and method of manufacture
06/09/1981US4272789 Pulse-forming circuit for on/off conversion of an image analysis signal
06/09/1981US4272684 Optical beam-splitting arrangements on object side of a lens
06/09/1981US4272187 Automatic alignment of optical elements in an electrophotographic apparatus
06/03/1981EP0029568A1 Image sensor device
06/02/1981US4271436 Digital copying machine
06/02/1981US4271435 Scanning type readout device
06/02/1981US4271430 Microfilm display apparatus
06/02/1981US4271429 Arrangement for color picture scanning
06/02/1981US4271428 Arrangement for color picture scanning
06/02/1981US4271415 Laser COM device
06/02/1981CA1102446A1 Facsimile cassette with wire electrode
06/02/1981CA1102396A1 Electric recording process
06/02/1981CA1102394A1 Magnetic latent image creation
06/02/1981CA1102392A1 Recorder pen with ink jet writing device
06/02/1981CA1102137A1 Multiple nozzle arrays and method of manufacture
05/1981
05/27/1981EP0029327A1 Apparatus and method for reproducing image and word data
05/27/1981EP0029049A1 Method and device for partial electronic retouching during the reproduction of colour images.
05/26/1981US4270149 Laser beam facsimile apparatus
05/26/1981US4270148 Facsimile transmission apparatus
05/26/1981US4270147 Apparatus for limiting facsimile transmission durations
05/26/1981US4270146 Identification information addition system of facsimile apparatus
05/26/1981US4270141 Method and machine for reproducing a color picture by storing signal streams, one entirely, and the rest partially
05/26/1981US4270131 Adaptive error correction device for a laser scanner
05/26/1981US4270047 Information detecting apparatus
05/26/1981CA1101983A1 Document analysis device, in particular for fac- simile sender
05/26/1981CA1101919A1 Apparatus for exciting an array of ink jet nozzles and method of forming
05/20/1981EP0028957A1 Shade intensity reproducing device using a thermal print head, and thermal-printing system comprising such a device
05/20/1981EP0028845A1 Beam scanning copying apparatus
05/19/1981US4268872 Magnetic duplicator with multiple copies
05/19/1981US4268871 Scanning optical system for formation of a half tone image
05/19/1981US4268870 Recording apparatus for reading information from an original
05/19/1981US4268869 Electronic stencil cutter having means to vary size of reproduced picture
05/19/1981US4268868 Beam scanning type electronic copying apparatus
05/19/1981US4268867 Pixel clock for scanner
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