Patents by Inventor Naofumi Goda

Naofumi Goda 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).

  • Method and apparatus for encoding transmitting and receiving image by pulse code modulation
    Patent number: 4809067
    Abstract: An image encoding/transmitting apparatus and method implemented by applying the vector quantization technology utilizing the differential pulse code modulation system in which an estimated error signal is compared with a threshold value to generate a change or movement detection signal and a differential signal, which are then quantized so as to be transmitted and received wherein the polarity of the differential signal is judged by a polarity judgment circuit, a polarity is assigned to the threshold value based on the judgment value by a polarity adding circuit, the differential signal is corrected depending on the threshold value with the polarity, and the corrected differential signal is quantized so as to be transmitted and received.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: February 28, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroaki Kikuchi, Kenichi Asano, Okikazu Tanno, Naofumi Goda