Patents by Inventor Tatsuo Miyara

Tatsuo Miyara 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 disk drive
    Patent number: 8427918
    Abstract: There is provided an optical disk drive that pursues power saving and simultaneously assures data recording quality. A servo processor of the optical disk drive has a low frequency equalizer, a high frequency equalizer, a limiter, and an adder. A limit voltage value of the limiter is set by means of a control command from a system controller. The limit voltage value is set so as to become greater during a data recording period than in a data regeneration period. An output from the adder is supplied as a tracking drive signal to a tracking actuator or as a focus drive signal to a focus actuator.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: April 23, 2013
    Assignee: TEAC Corporation
    Inventors: Yoshiyuki Otsuka, Tatsuo Miyara
  • OPTICAL DISK DRIVE
    Publication number: 20110222386
    Abstract: There is provided an optical disk drive that pursues power saving and simultaneously assures data recording quality. A servo processor of the optical disk drive has a low frequency equalizer, a high frequency equalizer, a limiter, and an adder. A limit voltage value of the limiter is set by means of a control command from a system controller. The limit voltage value is set so as to become greater during a data recording period than in a data regeneration period. An output from the adder is supplied as a tracking drive signal to a tracking actuator or as a focus drive signal to a focus actuator.
    Type: Application
    Filed: September 21, 2010
    Publication date: September 15, 2011
    Applicant: TEAC CORPORATION
    Inventors: Yoshiyuki Otsuka, Tatsuo Miyara