Patents by Inventor Ryoji Asada

Ryoji Asada 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 processing color camera using digital delay lines and an analog encoder
    Patent number: 5227870
    Abstract: A digital processing color camera includes a matrix circuit for arithmetically processing digital R, G and B video signals, which have been sampled by a clock signal, to provide a digital brightness signal, a first digital color difference signal and a second digital color difference signal. Those signals are subsequently converted by associated digital-to-analog converters into an analog brightness signal, a first analog color difference signal and a second analog color difference signal. Both the brightness signal and the first color difference signal, are delayed a predetermined period of time by digital delay lines inserted between the matrix circuit and the digital-to-analog converter circuit.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: July 13, 1993
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Ryoji Asada, Shoji Nishikawa