Patents by Inventor Hiroto Sakuma

Hiroto Sakuma 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).

  • Recorder player
    Publication number: 20060062542
    Abstract: A recorder player has a first encoder for encoding broadcast video signals at a first image quality, a second encoder for encoding the same video signals as those encoded by the first encoder at a second image quality, which is lower than the first image quality, and a recording and reproducing unit for recording and reproducing data which is encoded by the first encoder and backup data which is encoded by the second encoder.
    Type: Application
    Filed: March 10, 2005
    Publication date: March 23, 2006
    Applicant: DENON, LTD
    Inventor: Hiroto Sakuma
  • Medium recording apparatus and medium reproducing apparatus, and medium recording method and medium reproducing method, and medium used therefor
    Patent number: 5731923
    Abstract: In a recording and reproducing apparatus capable of continuously recording to and reproducing from a plurality of media, the recording and reproducing apparatus includes a recording and reproducing device for recording data to and reproducing it from the medium and a controller for performing edition such as deleting, connecting, and separating the recorded data.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: March 24, 1998
    Assignee: Nippon Columbia Co., Ltd.
    Inventor: Hiroto Sakuma
  • Optical disk system having table-of-contents information data
    Patent number: 5634031
    Abstract: To provide an optical disk recorder capable of reading data currently recorded even if the power supply is turned off during the recording of record data in a system using an optical disk in which table-of-contents information is not recorded in an area other than a user's recording area for recording record data and recording and reproducing of data is controlled according to the table-of-contents information.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: May 27, 1997
    Inventor: Hiroto Sakuma