Patents by Inventor Toshihiro Okuyama

Toshihiro Okuyama 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 a system for adjusting optical recording device involving an optical recording medium of non-uniform heat characteristics
    Patent number: 5793723
    Abstract: The discrepancies in the input-output operations associated with utilizing predetermined optical disk portions with various heat capacities to store data are substantially reduced by providing additional and separate information to compensate the non-uniform characteristics. The additional data may be stored in an external memory or on the disk itself.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: August 11, 1998
    Assignee: Nikon Corporation
    Inventors: Toshihiro Okuyama, Haruhisa Iida, Satomi Yoshibe