Patents by Inventor Michinobu Tanaka

Michinobu Tanaka 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).

  • Disc access apparatus and disc access method
    Patent number: 8416653
    Abstract: The directory information on a file system recorded on an optical disc is cached onto a hard disk as a directory table. When accessing a file on the optical disc, a processor references the directory table so as to obtain information related to a position, on the disc medium, where the file to be accessed is located, without accessing the directory information on the optical disc. A disc I/O controller moves a pickup unit to the location indicated by the positional information on the file to be accessed and reads the data on the file. The pickup unit is used to detect signals from the optical disc.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: April 9, 2013
    Assignees: Sony Corporation, Sony Computer Entertainment Inc.
    Inventors: Michinobu Tanaka, Shinichi Tanaka, Hideya Muraoka
  • Disc Access Apparatus and Disc Access Method
    Publication number: 20100309757
    Abstract: The directory information on a file system recorded on an optical disc is cached onto a hard disk as a directory table. When accessing a file on the optical disc, a processor references the directory table so as to obtain information related to a position, on the disc medium, where the file to be accessed is located, without accessing the directory information on the optical disc. A disc I/O controller moves a pickup unit to the location indicated by the positional information on the file to be accessed and reads the data on the file. The pickup unit is used to detect signals from the optical disc.
    Type: Application
    Filed: September 2, 2008
    Publication date: December 9, 2010
    Applicant: SONY COMPUTER ENTERTAINMENT INC.
    Inventors: Michinobu Tanaka, Shinichi Tanaka, Hideya Muraoka