Patents by Inventor James J. Williams

James J. Williams has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Digital matrixing system
    Patent number: 4507676
    Abstract: A matrix for digital video signals separates each coefficient into a binary part and a remainder. The binary part can be implemented very simply by a hardwired right shift. The remainder can be implemented using a ROM. Less ROM memory space is required than for implementing the entire coefficient in a ROM.
    Type: Grant
    Filed: October 28, 1982
    Date of Patent: March 26, 1985
    Assignee: RCA Corporation
    Inventors: Robert A. Dischert, James J. Williams, Jr.
  • TDM Scheme for digital video processing
    Patent number: 4376948
    Abstract: A TDM scheme has a Y signal that is sampled at 14.32 MHz and every other sample is discarded. The discarded samples are 180.degree. out-of-phase from line-to-line. I and Q signals are sampled at one half this frequency and every other sample is discarded also 180.degree. out-of-phase from line-to-line on a given line. The discarded samples of Q and I are 180.degree. out-of-phase with respect to each other. This allows insertion of the retained I and Q samples into the retained Y samples to allow multiplexing.
    Type: Grant
    Filed: January 26, 1981
    Date of Patent: March 15, 1983
    Assignee: RCA Corporation
    Inventors: Robert A. Dischert, James J. Williams, Jr., Glenn A. Reitmeier
  • Hardware reduction by truncation of selected number of most significant bits for digital video system using subsampling and adaptive reconstruction
    Patent number: 4340940
    Abstract: In order to reduce the amount of hardware required in comparing 8-bit numbers representing digitized video signals, only the four LSB are compared, since if the numbers differ by more than the four LSB, no comparison is desired. This is done by detecting if any of the four MSB are logic "1", and if so, setting all of the four LSB to logic "1".
    Type: Grant
    Filed: August 26, 1980
    Date of Patent: July 20, 1982
    Assignee: RCA Corporation
    Inventors: James J. Williams, Jr., Robert A. Dischert
  • Technique for optimally encoding digitally encoded video signals
    Patent number: 4320416
    Abstract: An encoder for digital video signals uses averages of pairs of transmitted samples to reconstruct untransmitted samples. The pair selected for reconstruction is selected in accordance with the criteria of least change around the untransmitted sample. If a plurality of averages are tied for least change, a priority order is used to select which average to use. For color video the priority order is preferably the horizontal, diagonal and vertical averages. A different order can be used for monochrome signals.
    Type: Grant
    Filed: October 15, 1980
    Date of Patent: March 16, 1982
    Assignee: RCA Corporation
    Inventors: Robert A. Dischert, Eugene M. Nagle, James J. Williams, Jr.
  • Vent panel
    Patent number: D335922
    Type: Grant
    Filed: July 18, 1991
    Date of Patent: May 25, 1993
    Inventor: James J. Williams
  • Protective covering for garage door springs
    Patent number: D340858
    Type: Grant
    Filed: April 9, 1991
    Date of Patent: November 2, 1993
    Inventor: James J. Williams
  • Combined television, VCR and radio console
    Patent number: D369795
    Type: Grant
    Filed: August 14, 1995
    Date of Patent: May 14, 1996
    Inventor: James J. Williams