Patents by Inventor Nobufumi Ueno

Nobufumi Ueno 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).

  • Diversity circuit demodulating OFDM-method signals and diversity receiving apparatus having said diversity circuit therein
    Patent number: 7369622
    Abstract: In a receiving apparatus, two respective reference-point computing units in respective diversity branches calculate reference points on a constellation, and two respective reference-point specifying units in the two diversity branches select respectively the reference points closest to the received data. A diversity circuit receive from the two diversity branches the information specifying the received data and the reference points, and a comparison processing unit compares these reference points. If these reference points are matched, a selection combining unit outputs the reference point while, if not matched, any one of received data selected at random is outputted.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: May 6, 2008
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Nobufumi Ueno, Toshiya Iwasaki, Masayuki Yoshinaga
  • Diversity circuit demodulating OFDM-method signals and diversity receiving apparatus having said diversity circuit therein
    Publication number: 20030185320
    Abstract: In a receiving apparatus, two respective reference-point computing units in respective diversity branches calculate reference points on a constellation, and two respective reference-point specifying units in the two diversity branches select respectively the reference points closest to the received data. A diversity circuit receive from the two diversity branches the information specifying the received data and the reference points, and a comparison processing unit compares these reference points. If these reference points are matched, a selection combining unit outputs the reference point while, if not matched, any one of received data selected at random is outputted.
    Type: Application
    Filed: March 25, 2003
    Publication date: October 2, 2003
    Inventors: Nobufumi Ueno, Toshiya Iwasaki, Masayuki Yoshinaga