Patents by Inventor Akitoshi Watanabe

Akitoshi Watanabe 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).

  • Disc drive
    Patent number: 9997205
    Abstract: A disc drive (digital book data playback apparatus) includes a cabinet, a disc insertion part through which a digital book data disc is inserted into the cabinet, the disc insertion part being provided in a surface of the cabinet, and a guide groove formed in a surface of the cabinet, the guide groove having a starting end portion formed at an opening end and a terminating end portion continued to the disc insertion part, the guide groove being capable of receiving an outer peripheral edge of the digital book data disc to be inserted into the disc insertion part until the outer peripheral edge reaches a necessary depth.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: June 12, 2018
    Assignee: SHINANO KENSHI KABUSHIKI KAISHA
    Inventors: Takahiro Ogawa, Akitoshi Watanabe
  • DISC DRIVE
    Publication number: 20180108381
    Abstract: A disc drive (digital book data playback apparatus) includes a cabinet, a disc insertion part through which a digital book data disc is inserted into the cabinet, the disc insertion part being provided in a surface of the cabinet, and a guide groove formed in a surface of the cabinet, the guide groove having a starting end portion formed at an opening end and a terminating end portion continued to the disc insertion part, the guide groove being capable of receiving an outer peripheral edge of the digital book data disc to be inserted into the disc insertion part until the outer peripheral edge reaches a necessary depth.
    Type: Application
    Filed: October 11, 2017
    Publication date: April 19, 2018
    Inventors: Takahiro OGAWA, Akitoshi WATANABE
  • Small current detector circuit and locator device using the same
    Patent number: 5783951
    Abstract: Improved small current detector circuit and locator device each comprise a first and a second element in both of which a small current output occurs, a first and a second constant current generator circuit each generating a specified constant current, a first current mirror circuit which is supplied at the input with said output current occurring in said first element and said specified constant current generated from said first constant current generator circuit, and a second current mirror circuit which is supplied at the input with said output current occurring in said second element and said specified constant current generated from said second constant current generator circuit, and wherein either one of said first and second elements is disposed in a detecting portion and a current equal to the current from the output of either one of said first and second current mirror circuits is flowed to the output of the other current mirror circuit such that a detection output corresponding to the difference betw
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: July 21, 1998
    Assignees: Rohm Co., Ltd., Alps Electric Co., Ltd.
    Inventors: Kinya Inoue, Akitoshi Watanabe, Mitsuharu Iwasaki, Mikio Matsumoto, deceased