Blackspot Or Shading Correction (e.g., Corrects For Fixed Pattern Defects) Patents (Class 348/615)
  • Dynamic gain correction for CRT printing
    Patent number: 5303056
    Abstract: A system is provided that causes the CRT of a CRT printer to produce images on the screen of the CRT, which when projected onto a photographic media will have uniform illumination at all points on the photographic media. The system accomplishes the foregoing by dynamically changing the amplitude (gain) of the video image signal applied to the CRT.
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: April 12, 1994
    Assignee: Eastman Kodak Company
    Inventor: Douglas W. Constable
  • Television receiver for microwave reception with provisions for reducing interference
    Patent number: 5287184
    Abstract: Interference induced amplitude changes in the television signals received by a receiver which receives satellite signals are eliminated by delaying the signals for an integer multiple of the receiver line time and substituting the delayed signals for the undelayed signals for the duration of the amplitude changes.
    Type: Grant
    Filed: November 21, 1991
    Date of Patent: February 15, 1994
    Assignee: Ferguson Limited
    Inventor: Edric H. Field