Patents by Inventor Hidekazu Matsunobu

Hidekazu Matsunobu 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).

  • Line status detection apparatus, communication apparatus, and line status detection method
    Patent number: 8847751
    Abstract: A first communication apparatus 100 transmits a pilot signal which was generated by a pilot signal generation section 14, at predetermined timing, and detects an unbalance component of a transmission line 300 at the time of pilot signal transmission in an unbalance component detection section 13, and controls a transmission signal in such a manner that an unbalance component is reduced by a transmission control section 12 on the basis of the detected unbalance component.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: September 30, 2014
    Assignee: Panasonic Corporation
    Inventors: Fumio Ichihara, Akihiro Yamashita, Hidekazu Matsunobu, Nobutaka Kodama, Masahiro Maki, Tsunehiro Hanada, Yuji Igata, Toshiyuki Wakisaka, Kazuaki Kusune, Mutsuhiko Oishi, Ryota Yukizane
  • Receiving level control apparatus and receiver
    Patent number: 8331503
    Abstract: A receiving level control apparatus includes an amplifier to receive a signal and to amplify the signal based on a gain control signal, a memory to store an accumulated level of the amplified signal at every sampling period, and a gain control section to judge whether or not the accumulated level, which has been accumulated from a first time instant, exceeds a first reference value at a predetermined timing, and to control the gain control signal for the amplifier in response to a length of a time period defined from the first time instant up to a second time instant in a case that the accumulated level exceeds the first reference value, the second time instant defined as a time instant when the gain control section judges that the accumulated level exceeds the first reference value.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: December 11, 2012
    Assignee: Panasonic Corporation
    Inventor: Hidekazu Matsunobu
  • RECEIVING LEVEL CONTROL APPARATUS AND RECEIVER
    Publication number: 20090207953
    Abstract: A receiving level control apparatus includes an amplifier to receive a signal and to amplify the signal based on a gain control signal, a memory to store an accumulated level of the amplified signal at every sampling period, and a gain control section to judge whether or not the accumulated level, which has been accumulated from a first time instant, exceeds a first reference value at a predetermined timing, and to control the gain control signal for the amplifier in response to a length of a time period defined from the first time instant up to a second time instant in a case that the accumulated level exceeds the first reference value, the second time instant defined as a time instant when the gain control section judges that the accumulated level exceeds the first reference value.
    Type: Application
    Filed: February 13, 2009
    Publication date: August 20, 2009
    Applicant: PANASONIC CORPORATION
    Inventor: Hidekazu MATSUNOBU
  • Line Status Detection Apparatus, Communication Apparatus, and Line Status Detection Method
    Publication number: 20080107242
    Abstract: A first communication apparatus 100 transmits a pilot signal which was generated by a pilot signal generation section 14, at predetermined timing, and detects an unbalance component of a transmission line 300 at the time of pilot signal transmission in an unbalance component detection section 13, and controls a transmission signal in such a manner that an unbalance component is reduced by a transmission control section 12 on the basis of the detected unbalance component.
    Type: Application
    Filed: December 22, 2005
    Publication date: May 8, 2008
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Fumio Ichihara, Akihiro Yamashita, Hidekazu Matsunobu, Nobutaka Kodama, Masahiro Maki, Tsunehiro Hanada, Yuji Igata, Toshiyuki Wakisaka, Kazuaki Kusune, Mutsuhiko Oishi, Ryota Yukizane