| Patents for H04N 1 - Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof (142,802) |
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| 03/14/1990 | CN1040450A Piece-wise print image enhancement for dot matrix printers |
| 03/13/1990 | US4908875 Adaptive thresholding technique |
| 03/13/1990 | US4908873 Document reproduction security system |
| 03/13/1990 | US4908851 Facsimile apparatus operable in facsimile or conversation mode |
| 03/13/1990 | US4908719 Scanning apparatus with a mechanism to scan both sides of an original |
| 03/13/1990 | US4908718 Image reading apparatus having a light shielding layer arranged on the sides of the substrate and protective layers of a photo sensor |
| 03/13/1990 | US4908717 Image scanner using a rod-type light source |
| 03/13/1990 | US4908716 Image processing apparatus |
| 03/13/1990 | US4908714 Image transmission apparatus |
| 03/13/1990 | US4908712 Method for tone reproduction in image forming system |
| 03/13/1990 | US4908711 Electronic writing board |
| 03/13/1990 | US4908708 Light beam scanning optical system |
| 03/13/1990 | US4908701 Color image processing method and apparatus for color adjustment during image processing |
| 03/13/1990 | US4908654 Method and apparatus for automatic printing from microfilm of short image areas |
| 03/13/1990 | US4908610 Color image display apparatus with color palette before frame memory |
| 03/13/1990 | US4908520 Radiation image recording, read-out and reproducing apparatus |
| 03/13/1990 | US4908511 Light beam scanning device |
| 03/13/1990 | CA1266732A1 Abs compositions having trimodal rubber particle distributions and process |
| 03/08/1990 | WO1990002466A1 Teleconference facility with high resolution video display |
| 03/08/1990 | WO1990002386A1 Page memory control in a raster image processor |
| 03/08/1990 | WO1990002385A1 Page memory control in a raster color image processor |
| 03/07/1990 | EP0357446A2 Half toning pixel processor |
| 03/07/1990 | EP0357427A2 Communication terminal device |
| 03/07/1990 | EP0357407A2 Image signal processing apparatus for use in color image reproduction system |
| 03/07/1990 | EP0357388A2 Image encoding method |
| 03/07/1990 | EP0357386A2 Image encoding apparatus |
| 03/07/1990 | EP0357385A2 Image processing method and apparatus |
| 03/07/1990 | EP0357191A2 Method of color selection for display and printing |
| 03/07/1990 | EP0357190A2 Optical scanner |
| 03/07/1990 | EP0357177A2 Method and apparatus for color separation scanning |
| 03/07/1990 | EP0357175A2 High resolution halftone dot generator system including two-dimensional LED array |
| 03/07/1990 | EP0357084A1 Apparatus for correcting dark signal of image sensor |
| 03/07/1990 | EP0357083A2 Image reading device |
| 03/07/1990 | EP0357054A2 Color image reading apparatus |
| 03/07/1990 | CN2054240U Automatic contrast regulator |
| 03/07/1990 | CN1040279A Electronic blackboard device and articles for writing thereof |
| 03/06/1990 | US4907286 Image processing apparatus |
| 03/06/1990 | US4907284 Image processing apparatus having function of enlargement and/or shrinkage of image |
| 03/06/1990 | US4907280 Slide scanner |
| 03/06/1990 | US4907255 Clock adjusting system of a facsimile machine |
| 03/06/1990 | US4907236 Method of controlling the quantity of light in a selected range |
| 03/06/1990 | US4907231 Memory cartridge-connectable electronic device such as electronic still video camera |
| 03/06/1990 | US4907097 Original reading apparatus |
| 03/06/1990 | US4907096 Image processing |
| 03/06/1990 | US4907095 Still image trimming apparatus |
| 03/06/1990 | US4907094 Data communication system |
| 03/06/1990 | US4907091 Optical reading apparatus |
| 03/06/1990 | US4907088 Contact-type imager for use as the front end of copier apparatus |
| 03/06/1990 | US4907084 Image reading unit with black level control |
| 03/06/1990 | US4907078 Method for reproducing color images which are distinguishable in a document having only two colors |
| 03/06/1990 | US4907077 Method and apparatus for white balancing |
| 03/06/1990 | US4907076 Color balance processing apparatus wherein color component signals are corrected through comparison with a reference value |
| 03/06/1990 | US4907075 Method for selecting colors |
| 03/06/1990 | US4907071 Method of color correction of video signals |
| 03/06/1990 | US4907034 Image recorder using recording head |
| 03/06/1990 | US4907017 Laser optical apparatus |
| 03/06/1990 | US4906856 Semiconductive photodetection device having coplanar circuit components |
| 03/06/1990 | US4906855 Photosensitive matrix with two diodes per dot without specific resetting conductor |
| 03/06/1990 | US4906847 Radiation image read-out and reproducing apparatus |
| 03/06/1990 | US4906843 Combination mouse, optical scanner and digitizer puck |
| 03/06/1990 | US4906836 Integrated circuit using logarithmic amplifier |
| 03/06/1990 | US4906081 Transmissive filter for correcting illuminance distribution |
| 03/06/1990 | CA1266524A1 Image processing system |
| 02/28/1990 | EP0356351A1 Electronic camera with proofing feature |
| 02/28/1990 | EP0356328A2 Tonal conversion method for pictures |
| 02/28/1990 | EP0356286A1 Multiple resolution laser printor |
| 02/28/1990 | EP0356238A2 Method of reducing average data rate in rotating mirror laser recorder |
| 02/28/1990 | EP0356225A2 Image processing apparatus |
| 02/28/1990 | EP0356034A2 Optical sensor |
| 02/28/1990 | EP0355863A1 Handy reader/printer apparatus |
| 02/28/1990 | EP0355839A2 Optical beam scanning apparatus |
| 02/28/1990 | EP0355838A2 Visual telephone apparatus |
| 02/28/1990 | EP0355221A1 Method and apparatus of photogrammetric mensuration with a reseau grid |
| 02/28/1990 | EP0355219A1 Optical system for stagger compensation in an optical scanner |
| 02/28/1990 | EP0238547B1 Color video printer |
| 02/27/1990 | US4905294 Image processing apparatus |
| 02/27/1990 | US4905098 Copier with an optional facsimile function and method of controlling the same |
| 02/27/1990 | US4905097 Image processing system capable of processing both binary and multivalue image data and having converters for converting each type of image data into the other type of image data |
| 02/27/1990 | US4905096 Image reading arrangement |
| 02/27/1990 | US4905095 Image processing apparatus |
| 02/27/1990 | US4905094 System for audio/video presentation |
| 02/27/1990 | US4905092 Condensation-free data reading machine |
| 02/27/1990 | US4905091 Recording data processor |
| 02/27/1990 | US4905090 Reading or writing method and apparatus thereof |
| 02/27/1990 | US4905079 Color image processing apparatus for processing separated color signals |
| 02/27/1990 | US4905025 Method of and apparatus for recording image on photosensitive material with a plurality of photobeams |
| 02/27/1990 | US4905023 Image forming apparatus including digital image signal input means |
| 02/27/1990 | US4905022 Image forming apparatus having laser light source |
| 02/27/1990 | US4904034 Scanning apparatus |
| 02/27/1990 | US4903957 Dynamically stable sheet clamping system for high speed sheet handling drums |
| 02/27/1990 | CA1266324A1 Image pick-up apparatus |
| 02/22/1990 | WO1990001846A1 Scanning circuit device |
| 02/22/1990 | WO1990001842A1 Method and apparatus for accessing a facsimile store and forward network |
| 02/21/1990 | CN1006873B Text and graphics image setting apparatus |
| 02/20/1990 | US4903316 Binarizing apparatus |
| 02/20/1990 | US4903315 Apparatus for enlarging or reducing an image pattern |
| 02/20/1990 | US4903205 Method and apparatus for displaying radiation image, and method and apparatus for calculating unsharp mask signal used for the same |
| 02/20/1990 | US4903147 Method and apparatus for processing an image |
| 02/20/1990 | US4903146 Digital image forming apparatus |
| 02/20/1990 | US4903145 Image quality control apparatus capable of density-correcting plural areas of different types |