Patents by Inventor Kanjyu Ishii

Kanjyu Ishii 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).

  • Magnetic video and audio recording and/or reproducing apparatus and recording medium
    Patent number: 5881204
    Abstract: A magnetic video and audio signals recording apparatus for simultaneously recording Y, PB, PR signals aa, bb, and cc and audio signals dd and ee in first and second track areas on a magnetic recording medium comprising a video signal recording device for recording the Y, PB, and PR signals aa, bb, and cc in the first track area using magnetic heads A1 and B2, a first audio signal recording device for recording an FM audio signal 9a to be recorded obtained by at least frequency-modulating the audio signals in a deep portion of the second track area using a magnetic head C1, and a second audio signal recording device for subsequently recording a PCM audio signal to be recorded 13a on a surface portion of the second track area using a magnetic head D1.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: March 9, 1999
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Hiroshi Nishiumi, Mitsuhiko Hara, Kanjyu Ishii
  • Magnetic video and audio recording and/or reproducing apparatus for simultaneously recording input video and audio signals
    Patent number: 5438463
    Abstract: A magnetic video and audio signals recording apparatus for simultaneously recording video signals and two audio signals in first and second recording areas on a magnetic recording medium comprising a video signal recording structure for recording the video signals in the first recording area using magnetic heads A1 and B2, a first audio signal recording structure for recording an FM audio signal to be recorded obtained by at least frequency-modulating the audio signals in a deep portion of the second recording area using a magnetic head C1, and a second audio signal recording structure for subsequently recording a PCM audio signal to be recorded on a surface portion of the second recording area using a magnetic head D1.
    Type: Grant
    Filed: January 7, 1994
    Date of Patent: August 1, 1995
    Assignee: Teac Corporation
    Inventors: Hiroshi Nishiumi, Kanjyu Ishii, Mitsuhiko Hara