Patents by Inventor Yasutaka Sato

Yasutaka Sato 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: 6810388
    Abstract: The digital contents copying-inhibition apparatus comprises a guard data storage section which stores a guard data. This guard data is for appending to audio or video digital data which can be expressed as amplitude of the contained frequency component. Presence of this guard data becomes apparent only when the audio or video digital data is reproduced after the data has been compressed once.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: October 26, 2004
    Assignee: Trinity Security Systems, Inc.
    Inventor: Yasutaka Sato
  • Publication number: 20020025036
    Abstract: In the data protection processing device, the protection key adding position determining section or the protection key removal position determining section determines as to whether or not received digital data meets predetermined adding conditions. If the data meets the predetermined adding conditions, encoding and decoding are performed by adding or subtracting a predetermined protection key value to digital data when a predetermined number of items of digital data have been received after the above determination in the protection key adding position determining section or protection key removal position determining section.
    Type: Application
    Filed: August 9, 2001
    Publication date: February 28, 2002
    Applicant: Trinity Communication Inc.
    Inventor: Yasutaka Sato