Patents by Inventor Keiichiro Shirakashi

Keiichiro Shirakashi 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).

  • Automatic tuning apparatus for a video tape recorder
    Patent number: 6108052
    Abstract: An automatic tuning apparatus capable of automatically switching the tuning mode of a tuner circuit, automatically arranging various signal data in or after completion of tuning and arbitrarily and automatically arranging various signal data by the user comprises a SYNC discrimination circuit (11) discriminating whether a video signal system is the NTSC system or another system, a tuning mode switching circuit (12) for switching the tuning mode, and a color discrimination circuit (13) receiving a color bust signal (identical signal) for discriminating whether the video signal system is the PAL system or the SECAM system. As to the NTSC system, the PAL system, the SECAM system and the SECAM-L system, the user may not set the tuning mode of tuning means, whereby an automatic tuning apparatus imposing no burden on the user can be obtained.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: August 22, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Noboru Arikane, Tetsuo Sugano, Kimitoshi Hongoh, Isamu Okugawa, Katsushi Shimamoto, Junichi Hamada, Keiichiro Shirakashi
  • Automatic tuning apparatus for a video tape recorder
    Patent number: 6034743
    Abstract: An automatic tuning apparatus capable of automatically switching the tuning mode of a tuner circuit, automatically arranging various signal data in or after completion of tuning and arbitrarily and automatically arranging various signal data by the user comprises a SYNC discrimination circuit (11) discriminating whether a video signal system is the NTSC system or another system, a tuning mode switching circuit (12) for switching the tuning mode, and a color discrimination circuit (13) receiving a color bust signal (identic signal) for discriminating whether the video signal system is the PAL system or the SECAM system. As to the NTSC system, the PAL system, the SECAM system and the SECAM-L system, the user may not set the tuning mode of tuning circuit, whereby an automatic tuning apparatus imposing no burden on the user can be obtained.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: March 7, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Noboru Arikane, Tetsuo Sugano, Kimitoshi Hongoh, Isamu Okugawa, Katsushi Shimamoto, Junichi Hamada, Keiichiro Shirakashi
  • Automatic tuning apparatus for a video tape recorder
    Patent number: 6002451
    Abstract: An automatic tuning apparatus is capable of automatically switching a tuning mode of a tuner circuit, automatically arranging various signal data in or after completion of tuning and arbitrarily and automatically arranging various signal data by a user. The apparatus comprises a SYNC discrimination circuit (11) for discriminating whether or not a video signal system is a NTSC system or another system, a tuning mode switching circuit (12) for switching a tuning mode, and a color discrimination circuit (13) for receiving a color burst signal (identic signal) for discriminating whether the video signal system is a PAL system or a SECAM system. As to the NTSC system, the PAL system, the SECAM system and a SECAM-L system, the user may not set the tuning mode of tuning means, whereby an automatic tuning apparatus imposing no burden on the user can be provided.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: December 14, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Noboru Arikane, Tetsuo Sugano, Kimitoshi Hongoh, Isamu Okugawa, Katsushi Shimamoto, Junichi Hamada, Keiichiro Shirakashi
  • Automatic tuning apparatus for a video tape signal
    Patent number: 5959700
    Abstract: An automatic tuning apparatus capable of automatically switching the tuning mode of a tuner circuit, automatically arranging various signal data in or after completion of tuning and arbitrarily and automatically arranging various signal data by the user comprises a SYNC discrimination circuit (11) discriminating whether a video signal system is the NTSC system or another system, a tuning mode switching circuit (12) for switching the tuning mode, and a color discrimination circuit (13) receiving a color bust signal (identic signal) for discriminating whether the video signal system is the PAL system or the SECAM system. As to the NTSC system, the PAL system, the SECAM system and the SECAM-L system, the user may not set the tuning mode of tuning circuit, whereby an automatic tuning apparatus imposing no burden on the user can be obtained.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: September 28, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Noboru Arikane, Tetsuo Sugano, Kimitoshi Hongoh, Isamu Okugawa, Katsushi Shimamoto, Junichi Hamada, Keiichiro Shirakashi