| 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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| 01/23/1991 | EP0408620A1 Drift correction in telecine |
| 01/22/1991 | US4987499 Image reading device |
| 01/22/1991 | US4987498 Method of forming halftone screen |
| 01/22/1991 | US4987497 Image editing method for a digital copier |
| 01/22/1991 | US4987496 System for scanning halftoned images |
| 01/22/1991 | US4987495 Image processing apparatus with image formation condition detection for control of processing |
| 01/22/1991 | US4987485 Image reading apparatus with improved output correction of image signal |
| 01/22/1991 | US4987484 Halftone image signal processing apparatus in which pixels of a dither threshold pattern are each divided into an operator-selected number of micropixels |
| 01/22/1991 | US4987477 Solid state imaging device |
| 01/22/1991 | US4987450 Electrophotographic printer comprising aligned plural light emitting devices |
| 01/22/1991 | US4987447 Control sheet generation for copiers and printers |
| 01/22/1991 | US4987426 Laser irradiating apparatus and laser recording apparatus using the same |
| 01/22/1991 | US4987304 Stimulating radiation |
| 01/22/1991 | US4987295 Multichip imager with improved optical performance near the butt region |
| 01/22/1991 | US4987294 Optical sensor with plual detectors and pulse sandwiching |
| 01/22/1991 | CA1279405C Data compression using block list transform |
| 01/17/1991 | DE4017549A1 Geometrically invariant image generation for laser raster microscope - involves clocking receiver signals into image memory according to detected scan position |
| 01/16/1991 | EP0408507A1 Method for the determination of the distances between the color coordinates of two halftone regions printed with a printing machine and method for monitoring or adjusting the color printing of a printing machine |
| 01/16/1991 | EP0408072A2 Solid state imaging device |
| 01/16/1991 | EP0407988A2 Scanning optical device with aberration compensation feature |
| 01/16/1991 | EP0407614A1 Image processing apparatus |
| 01/15/1991 | US4985930 Image data filing system and image data correcting method |
| 01/15/1991 | US4985919 Secure communication control system |
| 01/15/1991 | US4985779 Improved method and apparatus for generating halftone images |
| 01/15/1991 | US4985775 Electronic still camera system |
| 01/15/1991 | US4985760 Color imager having varying filter aperture sizes to compensate for luminance differences between colors |
| 01/15/1991 | US4985759 Method and apparatus for extracting black color component |
| 01/15/1991 | US4985630 Radiation image read-out apparatus and reproduction condition designating apparatus |
| 01/15/1991 | US4985629 Shading elmination method for an image read-out apparatus |
| 01/15/1991 | US4985620 Image reading apparatus |
| 01/15/1991 | US4985617 Manuscript reader |
| 01/15/1991 | US4984858 Light beam scanning optical system |
| 01/15/1991 | CA1279127C Integrated radiation sensing array |
| 01/15/1991 | CA1278938C Optical data acquisition apparatus |
| 01/10/1991 | WO1991000673A1 A technique for scanning a microfilm image moving at a variable speed |
| 01/10/1991 | WO1991000667A1 Method and apparatus for generating a high definition electronic signal from a line scan of a color original |
| 01/10/1991 | WO1991000549A1 Priority interrupt during editing mode |
| 01/10/1991 | WO1991000545A1 Camera system using magnetic tracks on film |
| 01/10/1991 | WO1991000390A1 Document security method and system |
| 01/10/1991 | DE3922176A1 Colour pattern scanning - has opto-electronic scanner to identify reference colours and colour points with three colour components for identification |
| 01/09/1991 | EP0407185A2 Apparatus for still image reproduction |
| 01/09/1991 | EP0407155A2 Image reading apparatus |
| 01/09/1991 | EP0407144A2 Printer |
| 01/09/1991 | EP0406968A1 Device for measuring light scattered by an information support |
| 01/09/1991 | EP0406960A1 Method of and apparatus for forming a multi-colour image |
| 01/09/1991 | EP0406897A2 Method of correcting image signal |
| 01/09/1991 | EP0406844A2 Scanning optical apparatus |
| 01/09/1991 | EP0406595A2 Method and apparatus for recording and reproducing a digital signal |
| 01/09/1991 | EP0406508A1 Device for reducing the redundancy in blocks of digital video data in DCT encoding |
| 01/09/1991 | CN1048476A Method and apparatus for disposition and transmission of pictures |
| 01/08/1991 | US4984287 Method for orienting a dual mouse optical scanner |
| 01/08/1991 | US4984285 Method of correcting shading phenomenon in optical character reader |
| 01/08/1991 | US4984284 Image processing apparatus |
| 01/08/1991 | US4984283 Two dimensional half-tone dot discrimination device |
| 01/08/1991 | US4984229 Autofocus system |
| 01/08/1991 | US4984097 Halftone reproduction with enhanced gray level reproducibility |
| 01/08/1991 | US4984092 Halftone image gradation data converted to bit-train data with data retained after thresholding converted to pulse-train data |
| 01/08/1991 | US4984091 Apparatus for photographing or projecting an image for a CRT or laser diode array |
| 01/08/1991 | US4984071 Method of and apparatus for establishing a reference point on a gradation correction curve |
| 01/08/1991 | CA1278859C Method for fabrication a multiple-head magnetic transducer |
| 01/06/1991 | WO1991000666A2 Method and apparatus for processing digital data |
| 01/02/1991 | EP0406198A2 A message receiving arrangement |
| 01/02/1991 | EP0406118A2 Apparatus and method for reducing radio frequency noise |
| 01/02/1991 | EP0405899A2 Communication apparatus |
| 01/02/1991 | EP0405895A2 Image processing apparatus |
| 01/02/1991 | EP0405825A2 Thermal printing apparatus |
| 01/02/1991 | EP0405491A2 Apparatus for recording and reproducing digital still image signal |
| 01/02/1991 | EP0405470A2 Color picture image reading device |
| 01/02/1991 | EP0405466A1 Single sheet picking and transport mechanism |
| 01/02/1991 | EP0405400A2 Image distinguishing device |
| 01/02/1991 | EP0405052A2 A technique for producing a fine grained dithered halftone image having an increased number of gray levels |
| 01/02/1991 | CN1048269A Image forming apparatus |
| 01/01/1991 | US4982294 Apparatus for enhancing and thresholding scanned microfilm images and methods for use therein |
| 01/01/1991 | US4982293 Method of compressing halftone image data |
| 01/01/1991 | US4982292 Method and apparatus for processing pel signals of an image |
| 01/01/1991 | US4982291 Electronic still video camera capable of searching desired picture in simple and quick manner |
| 01/01/1991 | US4982282 Image signal compression encoding apparatus and image signal expansion reproducing apparatus |
| 01/01/1991 | US4982277 Color image processing apparatus |
| 01/01/1991 | US4982270 Video data transmitting system |
| 01/01/1991 | US4982236 Self supporting optical document scanning system |
| 01/01/1991 | US4982235 Image scan apparatus |
| 01/01/1991 | US4982222 Imaging system utilizing an oscillating gradient index lens array |
| 01/01/1991 | US4982206 Laser printer having an apodizine mask |
| 01/01/1991 | US4982205 Laser beam scanner in which the line scan time is maintained constant by decreasing the rotating speed of a scanning element as the number of reflective facets thereon increases |
| 01/01/1991 | US4982199 Method and apparatus for gray scale printing with a thermal ink jet pen |
| 01/01/1991 | US4982079 Photo-sensor having plural transparent layers and a conductive layer to reduce electrostaslic charges |
| 12/31/1990 | CA2020155A1 Single sheet picking and transport mechanism |
| 12/28/1990 | CA2020000A1 Apparatus and method for reducing radio frequency noise |
| 12/27/1990 | WO1990016035A2 Digital image interpolator |
| 12/27/1990 | WO1990016034A1 Digital image interpolator with multiple interpolation algorithms |
| 12/27/1990 | WO1990015714A1 A method and a scanning device for preparation of large working surfaces, particularly printing patterns on serigraphic printing frames |
| 12/27/1990 | EP0404486A2 Thermal imaging system |
| 12/27/1990 | EP0404451A2 System utilizing a portable device for generating a telephone call |
| 12/27/1990 | EP0404398A2 Data processing system |
| 12/27/1990 | EP0404396A1 Image capture system and method |
| 12/27/1990 | EP0404395A2 Image processing system |
| 12/27/1990 | EP0404237A2 Method and device for noise supression of a digital signal |
| 12/27/1990 | EP0404236A1 Image segmentation method and device |
| 12/27/1990 | EP0403850A2 Color encoding photographic film |
| 12/27/1990 | EP0403641A1 Digital image sharpening method using svd block transform |