Patents by Inventor Takamoto Shimizu

Takamoto Shimizu 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).

  • Apparatus and method for accessing a location on a magnetic tape
    Patent number: 5552943
    Abstract: Access to a location on a tape along a transportation path thereof is controlled by controlling a revolution velocity of a reel motor based on a distance from a current location of the tape to a preselected location thereon, and in accordance with an estimated deviation in the revolution velocity between an optimum value at which the reel motor ideally should be driven and an actual revolution velocity at which the reel motor is actually driven.
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: September 3, 1996
    Assignee: Sony Corporation
    Inventors: Yoshiaki Hirano, Teruhito Noshiro, Takamoto Shimizu