Patents by Inventor Hajime Akutsu

Hajime Akutsu 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).

  • Patent number: 7194135
    Abstract: An image recording device that compresses and records image data is provided wherein noise reduction is recursively performed on the non-compressed image signals and the feedback gain or the filtering characteristic of a recursive noise reduction circuit are controlled according to the compressibility of the image data in order to reduce the compressibility of the non-compressed image signals without deterioration or to improve the compressibility efficiency thereof and to reduce the digital value of the compressed image data with the frame noises in restraint.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: March 20, 2007
    Assignee: Hitachi Ltd.
    Inventors: Kazuyuki Satou, Takahiro Nakano, Hajime Akutsu
  • Publication number: 20040208490
    Abstract: Image data is recorded both in a first recording format and in a second recording format having a lower coding rate than in the first recording format. Image data recorded in the first recording format is erased after transmitted to an external apparatus. Image data recorded in the second recording format is kept on an internal recording medium. Transmission to external increases the recording time available for image data. Even if the user requests to replay image data which has been erased after transmitted, it is possible to immediately replay the corresponding image data recorded in the second recording format without the necessity of reconnecting to the external apparatus and receiving the image data.
    Type: Application
    Filed: August 26, 2003
    Publication date: October 21, 2004
    Applicant: Hitachi, Ltd.
    Inventors: Hajime Akutsu, Yousuke Douba
  • Publication number: 20040136685
    Abstract: The present invention provides a moving picture recording device which includes a buffer for temporarily storing video data to allow the photography time to be extended after recording in the recording medium has been terminated.
    Type: Application
    Filed: July 23, 2003
    Publication date: July 15, 2004
    Applicant: HITACHI, LTD.
    Inventors: Masataka Ota, Hajime Akutsu
  • Publication number: 20030138164
    Abstract: An image recording device that compresses and records image data is provided wherein noise reduction is recursively performed on the non-compressed image signals and the feedback gain or the filtering characteristic of a recursive noise reduction circuit are controlled according to the compressibility of the image data in order to reduce the compressibility of the non-compressed image signals without deterioration or to improve the compressibility efficiency thereof and to reduce the digital value of the compressed image data with the frame noises in restraint.
    Type: Application
    Filed: November 27, 2002
    Publication date: July 24, 2003
    Applicant: Hitachi, Ltd.
    Inventors: Kazuyuki Satou, Takahiro Nakano, Hajime Akutsu