Patents by Inventor Tasuhiro Miyazaki

Tasuhiro Miyazaki 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 recording and reproducing apparatus
    Patent number: 4819220
    Abstract: A means receiving a light returning from an optical recording medium and detecting the beam distribution in the tangential direction of the track of the recording medium is provided. The offset of at least one controlling signal of a focusing controlling signal and tracking controlling signal is eliminated by the output signal of this beam distribution detecting means.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: April 4, 1989
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Tasuhiro Miyazaki, Hiroo Okada, Toshio Tsurukawa, Shohei Kobayashi