Patents by Inventor Nagatoshi Sugihara

Nagatoshi Sugihara 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: 5402406
    Abstract: A read only disc according to the present invention has a spiral recording track formed on the surface thereof. The recording track includes a plurality of record unit blocks formed continuously by an optical recording method, wherein each record unit block includes a dubbing permitted area and a dubbing inhibited area. Digital audio information having compressed data is recorded in the dubbing permitted area. On the other hand, display data associated with the digital audio information is recorded in the dubbing inhibited area. Thus, digital dubbing of digital audio information can be carried out and dubbing of display data is prevented to ensure dominance of the read only disc as a master software.
    Type: Grant
    Filed: July 7, 1994
    Date of Patent: March 28, 1995
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Masato Fuma, Nagatoshi Sugihara
  • Patent number: 5363364
    Abstract: A disc recording/reproducing apparatus according to the present invention intermittently records and reproduces compressed digital audio data in normal recording/reproduction. In high-speed dubbing of digital audio data, two of such apparatuses are used, wherein compressed digital audio data is continuously reproduced from a disc for reproduction by the reproduction side apparatus to be directly applied to the recording side apparatus and continuously recorded on a disc for recording. Thus, the compressed high-speed dubbing of the digital audio data can be achieved without increasing a rotation speed of the disc even in high-speed dubbing.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: November 8, 1994
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kenji Torazawa, Yasuhiro Ishii, Tateo Toyama, Shin'ichiro Tomisawa, Nagatoshi Sugihara
  • Patent number: 5331617
    Abstract: An audio data dubbing system includes a reproduction side device and a recording side device. The reproduction side device reproduces intermittently from a reproduction side disc compressed audio data on the basis of a predetermined reproducing unit, which is first stored in a reproduction side memory and read out continuously therefrom to be provided as compressed audio data for recording. Recording side device first stores in a recording side memory compressed audio data for recording provided from the reproduction side device and reads out the same therefrom intermittently in a predetermined recording unit to be recorded on a recording side disc. The recording side device suspends the reproduction operation of compressed audio data from the reproduction side disc in the reproduction side device when the data amount in the recording side memory is increased to exceed a first reference value.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: July 19, 1994
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Masato Fuma, Yutaka Tamura, Nagatoshi Sugihara, Takao Inoue, Miyuki Okamoto
  • Patent number: 5323367
    Abstract: A disc recorder containing a compressed data memory for storing compressed audio data to be recorded to a disc or reproduced from a disc. When a reduction pause state is set during reproduction operation, reading out of data from a compressed data memory is limited. Therefore, discontinuity of reproduced audio at the time of pause cancellation is prevented. When a recording pause state is set during recording operation, the compressed data memory is made empty. Therefore, discontinuity of the recording audio is also prevented at the time of pause cancellation.
    Type: Grant
    Filed: October 22, 1992
    Date of Patent: June 21, 1994
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yutaka Tamura, Nagatoshi Sugihara, Masato Fuma, Takao Inoue, Miyuki Okamoto