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
10/30/1991EP0454452A2 Data communication apparatus
10/30/1991EP0454448A2 Method and system for enhancing the quality of both color and black and white images produced by ink jet and electrophotographic printers
10/30/1991EP0454387A2 Data communication apparatus with pre-recorded telephone numbers
10/30/1991EP0454292A2 Read-out apparatus for solid state imaging device and image scanner using the same, and method
10/30/1991EP0454277A2 Method for breaking-up symmetry of matrix elements in an electronic half-tone screening processs
10/30/1991EP0454276A2 Method for multiplying screening frequency in an electronic half-tone screening process
10/30/1991EP0454275A2 Color separation method
10/30/1991EP0454274A2 Method for controlling halftone dot shape during dot growth
10/30/1991EP0454273A2 RGB color database and method for creating same
10/30/1991EP0454234A2 Processing picture signals
10/30/1991EP0454088A2 Image processing apparatus
10/30/1991EP0454086A2 Compensation for drift in a cathode ray tube
10/30/1991EP0454085A2 Method and apparatus for correcting color in graphic recorders
10/30/1991EP0454082A2 Image contour enhancing device
10/30/1991EP0453830A2 Scanning densitometer
10/30/1991EP0453828A2 Improved data compression system and method
10/30/1991EP0453827A2 Improved data decompression system and method
10/30/1991EP0453802A2 Method of recording integrated image and image recorder therefor
10/30/1991EP0453714A1 Gradation printer
10/30/1991EP0453661A1 Coordinate determining device
10/30/1991EP0453594A1 Highlighting for photocopiers and facsimile machines
10/30/1991EP0453568A1 Electronic blackboard apparatus
10/30/1991EP0453552A1 Digital compression method and system with improved coding efficiency
10/30/1991EP0453545A1 Scanning apparatus for halftone image screen writing
10/29/1991US5062144 Method of obtaining white reference data used for correcting non-uniformity in photoelectric cell array
10/29/1991US5062114 Output beam control device for a semiconductor laser
10/29/1991US5062058 Image processing method for color scanner
10/29/1991US5062010 Electronic still camera with remotely-controlled audio recording feature
10/29/1991US5062006 Sheet feeding apparatus and facsimile system having same
10/29/1991US5062003 Image forming apparatus
10/29/1991US5061979 Semiconductor photoelectric device having a matrix wiring section
10/29/1991US5061958 Display of user selectable paper feed options
10/29/1991US5061949 Image forming apparatus comprising means for setting a proper bias voltage of laser emitting means and method therefor
10/29/1991US5061852 Radiation image read-out apparatus
10/28/1991CA2041017A1 Method and apparatus for correcting color in graphic recorders
10/27/1991CA2041019A1 Compensation for drift in a cathode ray tube
10/27/1991CA2040937A1 Apparatus for sharpening a color image
10/24/1991DE4012905A1 Verfahren und vorrichtung zur erzeugung einer digitalen drucktabelle fuer druckfarben bei bildreproduktionsgeraeten Method and device for generation of a digital printing table for printing inks for image reproduction apparatus
10/23/1991EP0453281A2 Still image transmission
10/23/1991EP0453246A2 A communication apparatus capable of connecting memory card
10/23/1991EP0453245A2 Image inputting apparatus
10/23/1991EP0453244A2 Image processing apparatus
10/23/1991EP0453222A2 Data communication apparatus
10/23/1991EP0453184A2 Original reading apparatus
10/23/1991EP0453144A1 Polygon scanner with predictable facet deformation characteristics
10/23/1991EP0452933A2 An image reading method and apparatus therefor
10/23/1991EP0452931A2 Copy cassette supplying apparatus
10/23/1991EP0452928A2 Multi-gradation image recording apparatus
10/23/1991EP0452865A2 Facsimile apparatus comprising cordless telephone set
10/23/1991EP0452864A2 Facsimile apparatus comprising cordless telephone set
10/23/1991EP0452860A2 Facsimile apparatus comprising cordless telephone set
10/23/1991EP0452859A2 Facsimile apparatus comprising cordless telephone set
10/23/1991EP0452759A2 Method and apparatus for rapid scanning of color images
10/23/1991EP0452570A1 Processing and digitizing apparatus for medical radiographic film
10/23/1991EP0230437B1 Process for compressing and expanding structurally associated multiple-data sequences, and arrangements for implementing the process
10/23/1991CN1055634A Correction adgorithm for contiguous ccd elements leakage
10/22/1991US5060286 Raster row and byte group graphics images data compression method
10/22/1991US5060284 Adaptive error diffusion thresholding for document images
10/22/1991US5060283 Method and system for reading images with a movable light intercepting plate
10/22/1991US5060280 Masking control for image processing systems
10/22/1991US5060257 Videotex terminal for receiving telecopies
10/22/1991US5060084 Single substrate semiconductor device for image sensing and printing
10/22/1991US5060083 Background level detection method
10/22/1991US5060082 Facsimile apparatus
10/22/1991US5060080 Self multi-copy method in a facsimile system
10/22/1991US5060076 Thermal paper cartridge for facsimile machine
10/22/1991US5060071 Full-size optical sensor device having improved driving means
10/22/1991US5060069 Electronic still camera with less electric consumption
10/22/1991US5060061 Method of reading an image recorded in a photographic film tone characteristic correcting method in reproducing an image recorded in a photographic film
10/22/1991US5060060 Method and apparatus for processing color images having high maximum saturation
10/22/1991US5060059 Color image processing apparatus for converting color-sequential image data into color-parallel image data
10/22/1991US5059991 Dustproof transparent member
10/22/1991US5059987 Synchronizing signal generating system
10/22/1991US5059984 Method and apparatus for interlaced multicolor printing
10/22/1991US5059976 Coding method of image information
10/22/1991US5059962 Display system
10/22/1991US5059860 Illuminating light source for color image recording device
10/22/1991US5058992 Method for producing a display with a diffraction grating pattern and a display produced by the method
10/22/1991US5058968 Optical scanner for maintaining focus over a flat image plane
10/22/1991CA1291265C Binary coding circuit for ocr
10/17/1991WO1991015919A2 Scanner with electronic non-linearity compensation and method of processing image data
10/17/1991WO1991015915A1 Facsimile device having audio response function
10/17/1991WO1991015913A1 Composite telephone set
10/17/1991WO1991015818A1 System for searching and retrieving data from data bases via audio access with automatic faxing of results
10/17/1991DE4012043A1 Reading data following lamp failure in scanner - using multiple lamps and monitor devices in conjunction with calibration marks
10/17/1991DE4011689A1 Forming half tone raster points - de-arranging regularity of arrangement between density values and partial raster spot forms to achieve desired irregularity
10/16/1991EP0452242A2 Method and apparatus for synchronizing the pel clock of a laser printer
10/16/1991EP0452157A1 Image recording apparatus
10/16/1991EP0452142A2 Light emitting edge structure with uniform light emission filter
10/16/1991EP0452128A2 Original reading apparatus
10/16/1991EP0452066A2 Video signal processing apparatus
10/16/1991EP0451995A1 Methods and apparatus for half-tone imaging
10/16/1991EP0451845A2 An image reading apparatus
10/16/1991EP0451837A2 Image pickup system comprising a memory of a small capacity
10/16/1991EP0451770A2 Image forming apparatus
10/16/1991EP0451722A2 Image transmission device
10/16/1991EP0451629A2 Image formation system
10/16/1991EP0451579A2 Apparatus for reading images and method for enhancing the outlines of shapes
10/16/1991EP0451545A1 Apparatus and method for adaptively compressing successive blocks of digital video
10/16/1991EP0402426A4 Dual mode ink jet printer
1 ... 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 ... 1429