Patents by Inventor Munehisa Takaoka

Munehisa Takaoka 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).

  • Disk driving apparatus and information readout method with selective servo control for read-out destinations of lands and grooves
    Patent number: 7315491
    Abstract: A disc driving apparatus and an information readout method according to the present invention realize optimum servo control of a readout unit in reading out the information from a recording medium having lands and grooves. The disc driving apparatus includes a unit for correcting tracking error signals, a unit for inverting signals corrected by the correcting unit to generate inverted tracking error signals, a unit for detecting which of the lands and the grooves the readout unit is scanning, and a unit for selecting the tracking error signals or the inverted tracking error signals according to the results of detection by the detection unit to tracking-control the readout unit by the selected signals.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: January 1, 2008
    Assignee: Sony Corporation
    Inventors: Munehisa Takaoka, Kazuyuki Hayashi
  • Disc driving apparatus and information readout method
    Publication number: 20070008838
    Abstract: A disc driving apparatus and an information readout method according to the present invention realize optimum servo control of a readout unit in reading out the information from a recording medium having lands and grooves. The disc driving apparatus includes a unit for correcting tracking error signals, a unit for inverting signals corrected by the correcting unit to generate inverted tracking error signals, a unit for detecting which of the lands and the grooves the readout unit is scanning, and a unit for selecting the tracking error signals or the inverted tracking error signals according to the results of detection by the detection unit to tracking-control the readout unit by the selected signals.
    Type: Application
    Filed: September 8, 2006
    Publication date: January 11, 2007
    Inventors: Munehisa Takaoka, Kazuyuki Hayashi
  • Disk drive apparatus and information reading method
    Publication number: 20030169649
    Abstract: A disc driving apparatus and an information readout method according to the present invention realize optimum servo control of a readout unit in reading out the information from a recording medium having lands and grooves. The disc driving apparatus includes a unit for correcting tracking error signals, a unit for inverting signals corrected by the correcting unit to generate inverted tracking error signals, a unit for detecting which of the lands and the grooves the readout unit is scanning, and a unit for selecting the tracking error signals or the inverted tracking error signals according to the results of detection by the detection unit to tracking-control the readout unit by the selected signals.
    Type: Application
    Filed: April 28, 2003
    Publication date: September 11, 2003
    Inventors: Munehisa Takaoka, Kazuyuki Hayashi