Patents by Inventor Tomokazu Nakajima

Tomokazu Nakajima 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).

  • Site delivery method, method for receiving digital satellite broadcast, and receiver for digital satellite broadcast
    Patent number: 7283569
    Abstract: A site diversity method, a digital satellite broadcast receiving method and a digital satellite broadcast receiver are provided which can make a difference of data output timing between a main station and a subsidiary station at the time of site exchange as small as possible and can perform re-synchronization as soon as possible. In the site diversity method for digital satellite broadcast, when a site exchange execution designation signal is received, the site is exchanged during a period of a TMCC information field of a predetermined specific frame of a super frame determined when the execution designation signal is received. On the receiver side, information of broadcast is continuously received by detecting a TMCC information field in a specific frame during a period of which field the site was exchanged and by establishing re-synchronization by using a super frame sync pattern W2 or W3 after the detected TMCC information field.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: October 16, 2007
    Assignee: Kabushiki Kaisha Kenwood
    Inventors: Hiroshi Okamura, Tomokazu Nakajima, Takanori Fujii, Susumu Nishijima, Masaki Miyamoto, Kenichi Shiraishi, Akihiro Horii, Shoji Matsuda
  • Site delivery method, method for receiving digital satellite broadcast, and receiver for digital satellite broadcast
    Publication number: 20020191634
    Abstract: A site diversity method, a digital satellite broadcast receiving method and a digital satellite broadcast receiver are provided which can make a difference of data output timing between a main station and a subsidiary station at the time of site exchange as small as possible and can perform re-synchronization as soon as possible. In the site diversity method for digital satellite broadcast, when a site exchange execution designation signal is received, the site is exchanged during a period of a TMCC information field of a predetermined specific frame of a super frame determined when the execution designation signal is received. On the receiver side, information of broadcast is continuously received by detecting a TMCC information field in a specific frame during a period of which field the site was exchanged and by establishing re-synchronization by using a super frame sync pattern W2 or W3 after the detected TMCC information field.
    Type: Application
    Filed: June 17, 2002
    Publication date: December 19, 2002
    Inventors: Hiroshi Okamura, Tomokazu Nakajima, Takanori Fujii, Susumu Nishijima, Masaki Miyamoto, Kenichi Shiraishi, Akihiro Horii, Shoji Matsuda