Patents by Inventor Jun Hiroyoshi

Jun Hiroyoshi 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).

  • Optical information reproducing apparatus
    Patent number: 5054017
    Abstract: In the reproduction of data from one of N-frame sectors of an optical disk, data marks representing the front ends of the respective frames of a desired sector are detected and counted. When the number of the data marks is more than a predetermined value M (1<M.ltoreq.N), the reproduced data is accepted. Hence, the data accuracy can be ensured and the operating reliability of a data reproducing apparatus can be improved.
    Type: Grant
    Filed: March 29, 1990
    Date of Patent: October 1, 1991
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Jun Hiroyoshi, Yuzuru Kuroki, Isao Satoh