Patents by Inventor Muneki Ito

Muneki Ito 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 receiver
    Patent number: 6985544
    Abstract: It is an object of the present invention to improve the diversity gain by conducting linear prediction of fading fluctuations and switching antennas.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: January 10, 2006
    Assignee: Uniden Corporation
    Inventors: Masaki Matsui, Muneki Ito, Akio Horibe, Shigeo Sato
  • Diversity receiving device
    Patent number: 6907094
    Abstract: The present invention provides a diversity receiving device with superior interference resistance in a simple construction, comprising a plurality of antennas (11, 12); an antenna switching device (13) that selects any one of a plurality of antennas (11, 12) and carries out connection switching thereof; a demodulator (14) that demodulates a wireless signal and obtains a baseband spread spectrum signal; an A/D converter (15) that A/D converts the baseband spread spectrum signal and generates chip data; a digital matched filter (16) that finds the correlation value of the chip data and the spreading code; a maximum correlation value detection portion (18) that detects the maximum correlation value; an average value calculation portion (21) that finds the average value per frame of the maximum correlation value; and a level comparison device (22) that compares the above-mentioned average value and a predetermined threshold value, and outputs a control signal to the antenna switching device (13) to control antenn
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: June 14, 2005
    Assignee: Uniden Corporation
    Inventors: Masaki Matsui, Shigeo Sato, Toshiaki Fujikura, Akio Horibe, Muneki Ito
  • Diversity receiver
    Publication number: 20050059431
    Abstract: It is an object of the present invention to improve the diversity gain by conducting linear prediction of fading fluctuations and switching antennas.
    Type: Application
    Filed: December 8, 2003
    Publication date: March 17, 2005
    Inventors: Masaki Matsui, Muneki Ito, Akio Horibe, Shigeo Sato
  • Diversity receiving device
    Publication number: 20030026366
    Abstract: The present invention provides a diversity receiving device with superior interference resistance in a simple construction, comprising a plurality of antennas (11, 12); an antenna switching device (13) that selects any one of a plurality of antennas (11, 12) and carries out connection switching thereof; a demodulator (14) that demodulates a wireless signal and obtains a baseband spread spectrum signal; an A/D converter (15) that A/D converts the baseband spread spectrum signal and generates chip data; a digital matched filter (16) that finds the correlation value of the chip data and the spreading code; a maximum correlation value detection portion (18) that detects the maximum correlation value; an average value calculation portion (21) that finds the average value per frame of the maximum correlation value; and a level comparison device (22) that compares the above-mentioned average value and a predetermined threshold value, and outputs a control signal to the antenna switching device (13) to control antenn
    Type: Application
    Filed: March 12, 2002
    Publication date: February 6, 2003
    Applicant: Uniden Corporation
    Inventors: Masaki Matsui, Shigeo Sato, Toshiaki Fujikura, Akio Horibe, Muneki Ito