Patents Assigned to Hitachi Home Electronics (America), Inc.
  • Patent number: 7006040
    Abstract: Antennas with steerable antenna patterns and techniques for using such antennas are described. In accordance with the invention, antenna patterns with one or more NULLs are used. Through the use of digital control signals the antenna pattern is steered so that a source of signal interference, e.g., a multipath signal, will be located in a NULL. In this manner the received signal's S/N ratio can be maximized thereby facilitating demodulation. The techniques of the invention can be applied to television, computer devices, mobile devices and a wide range of other systems. Digital commands to control an antenna may include multiple information fields, e.g., a direction field, a channel field, a gain field and a polarity field. Antennas incapable of supporting the specified fields disregard information in fields which are not supported. Information in each supported field is decoded and used to adjust the corresponding antenna characteristic.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: February 28, 2006
    Assignees: Hitachi America, LTD., Hitachi Home Electronics (America), Inc.
    Inventors: John G. N. Henderson, Carl Scarpa
  • Patent number: D505404
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: May 24, 2005
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventors: A. Michael Forlenza, Hiroaki Takatsuki
  • Patent number: D517837
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: March 28, 2006
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventors: Hiroaki Takatsuki, Shigetaka Kimura
  • Patent number: D519090
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: April 18, 2006
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventor: A. Michael Forlenza
  • Patent number: D528087
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: September 12, 2006
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventors: Takashi Yamamoto, Hiroaki Takatsuki, Shigetaka Kimura
  • Patent number: D530292
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: October 17, 2006
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventors: A. Michael Forlenza, Hiroaki Takatsuki, Shigetaka Kimura
  • Patent number: D531591
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: November 7, 2006
    Assignee: Hitachi Home Electronics (America) Inc.
    Inventors: Hiroaki Takatsuki, Shigetaka Kimura
  • Patent number: D531592
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: November 7, 2006
    Assignee: Hitachi Home Electronics (America) Inc.
    Inventors: Takashi Yamamoto, Akira Omachi, Hiroaki Takatsuki, Shigetaka Kimura
  • Patent number: D533170
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: December 5, 2006
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventors: Takashi Yamamoto, Akira Omachi, Hiroaki Takatsuki, Shigetaka Kimura
  • Patent number: D533171
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: December 5, 2006
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventors: Takashi Yamamoto, Akira Omachi, Hiroaki Takatsuki, Shigetaka Kimura
  • Patent number: D545811
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: July 3, 2007
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventors: Takashi Yamamoto, Akira Omachi, Hiroaki Takatsuki, Shigetaka Kimura
  • Patent number: D549195
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: August 21, 2007
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventors: Hiroaki Takatsuki, Shigetaka Kimura
  • Patent number: D480385
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: October 7, 2003
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventors: A. Michael Forlenza, Hiroaki Takatsuki
  • Patent number: D482346
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: November 18, 2003
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventors: A. Michael Forlenza, Hiroaki Takatsuki
  • Patent number: D483966
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: December 23, 2003
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventors: A. Michael Forlenza, Hiroaki Takatsuki
  • Patent number: D567778
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: April 29, 2008
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventors: Hiroaki Takatsuki, Shigetaka Kimura
  • Patent number: D491002
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: June 8, 2004
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventors: A. Michael Forlenza, Hiroaki Takatsuki, Shigetaka Kimura
  • Patent number: D493431
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: July 27, 2004
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventors: A. Michael Forlenza, Hiroaki Takatsuki, Shigetaka Kimura
  • Patent number: D494942
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: August 24, 2004
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventor: A. Michael Forlenza
  • Patent number: D496543
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: September 28, 2004
    Assignee: Hitachi Home Electronics (America), Inc.
    Inventor: A. Michael Forlenza