Patents by Inventor Kohichiroh Sugata

Kohichiroh Sugata 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).

  • Wobble signal demodulation circuit and optical disk apparatus
    Publication number: 20050063277
    Abstract: A wobble signal demodulation circuit carries out phase demodulation of a wobble signal acquired from a reflection light reflected from a recording surface of an optical disk, the recording surface carrying a meandering track thereon, wherein the wobble signal including a carrier wave part having a predetermined fundamental frequency and a phase modulation wave part added with predetermined information.
    Type: Application
    Filed: September 16, 2004
    Publication date: March 24, 2005
    Inventor: Kohichiroh Sugata