Patents by Inventor Jun Sakurai

Jun Sakurai 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).

  • Coherence apparatus for cache of multiprocessor
    Patent number: 5890217
    Abstract: A plurality of processors, each with caches provided for a plurality of processor modules and a local storage in which a main storage is distributed and arranged are mutually connected through an internal snoop bus. The processor modules are mutually connected through a second system bus. By using two separate buses, cache coherence operations within a processor group is kept separate from cache coherence operations outside the processor group.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: March 30, 1999
    Assignees: Fujitsu Limited, PFU Limited
    Inventors: Akira Kabemoto, Naohiro Shibata, Toshiyuki Muta, Takayuki Shimamura, Hirohide Sugahara, Junji Nishioka, Takatsugu Sasaki, Satoshi Shinohara, Yozo Nakayama, Jun Sakurai, Hiroaki Ishihata, Takeshi Horie, Toshiyuki Shimizu
  • Optical disc play-back device of the carousel type, having a mechanism for reducing access type to any selected disc
    Patent number: 5293362
    Abstract: An optical disc playback device of the so-called "carousel" type comprises a disc transport turntable rotatably mounted within the player housing. The underside of the turntable has an annular ridge with notches formed therein, and the housing comprises a photocouple which detects the presence or absence of the notches. The notches are so configured that each disc-holding section of the turntable has a distinct set of notches associated therewith, and each set of notches includes a central position-indicating notch and disc number-indicating notches disposed symmetrically on both sides of the central position-indicating notch.
    Type: Grant
    Filed: June 4, 1992
    Date of Patent: March 8, 1994
    Assignee: Nippon Columbia Co., Ltd.
    Inventors: Jun Sakurai, Toshiyuki Kajikano
  • Adjustable magnifying device for hand-held video display apparatus and the like
    Patent number: 5130853
    Abstract: A magnifying device for use with a hand-held video display apparatus or the like having a generally rectangular housing and a video display visually observable from externally of the housing. The magnifying device includes a frame adapted for releasable mounting on the video display housing, and has a magnifying lens adapted to overlie the video display and effect magnification of the video display during operation when the magnifying device is mounted on the video display apparatus.
    Type: Grant
    Filed: August 28, 1990
    Date of Patent: July 14, 1992
    Assignee: Konami Industry Co., Ltd.
    Inventor: Jun Sakurai
  • Magnifying device for hand-held video display apparatus and the like
    Patent number: 4991935
    Abstract: A magnifying device for use with a hand-held video display apparatus or the like having a generally rectangular housing and a video display visually observable from externally of the housing. The magnifying device includes a frame adapted for releasable mounting on the video display housing, and has a magnifying lens adapted to overlie the video display and effect magnification of the video display during operation when the magnifying device is mounted on the video display apparatus.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: February 12, 1991
    Assignee: Konami Industry Co., Ltd.
    Inventor: Jun Sakurai
  • Magnifying device
    Patent number: D328909
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: August 25, 1992
    Inventor: Jun Sakurai
  • Magnifier
    Patent number: D336909
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: June 29, 1993
    Assignee: Konami Industry, Co., Ltd.
    Inventor: Jun Sakurai