Patents by Inventor Hirahata Shigeru

Hirahata Shigeru 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).

  • Recording apparatus for recording digital information
    Publication number: 20050180289
    Abstract: A digital information recording apparatus to record digital information to protect copyright of digital information that includes at least first digital information and first copy control information. The digital information recording apparatus records the digital information based upon the first copy control information, which denotes one of: a copy inhibition prohibiting copying of said first digital information; a limited copy permission authorizing a predetermined number of times of copying of said first digital information; and an unlimited copy permission authorizing unlimited copying of said first digital information.
    Type: Application
    Filed: April 11, 2005
    Publication date: August 18, 2005
    Inventors: Sasamoto Manabu, Noguchi Takaharu, Aikawa Makoto, Hirahata Shigeru
  • Digital information recording apparatus for recording digital information
    Patent number: 6453304
    Abstract: A digital information recording apparatus to record digital information to protect copyright of digital information that includes at least first digital information and first copy control information. The digital information recording apparatus records the digital information based upon the first copy control information, which denotes one of: a copy inhibition prohibiting copying of said first digital information; a limited copy permission authorizing a predetermined number of times of copying of said first digital information; and an unlimited copy permission authorizing unlimited copying of said first digital information.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: September 17, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Sasamoto Manabu, Noguchi Takaharu, Aikawa Makoto, Hirahata Shigeru