Patents by Inventor Mirsuro Moriya

Mirsuro Moriya 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).

  • Servo system for scanning the same track circumference of a spiral track on a disc shaped recording medium
    Patent number: 4833664
    Abstract: During the storing of a tracking error signal and an index detection signal in memories in relation to rotating means for a recording medium, an error is detected when the number of index detection signals is other than one and after the storing of the signal in the memory the missing reproduced index detection signal is interpolated in accordance with the index signal stored in the memory. Also, the stored index detection signal and the reproduced index detection signal are compared in phase so as to determine whether the stored tracking error signal is to be applied to a tracking control system. The memory for storing tracking error signal and the memory for storing index detection signal are combined in one unit.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: May 23, 1989
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazuharu Shiragami, Mirsuro Moriya, Hiroyuki yamaguchi