Patents by Inventor Keiichi Kitazawa

Keiichi Kitazawa 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).

  • Patent number: 7818635
    Abstract: In a digital broadcast receiver, when a bit error rate (BER) is larger than a threshold in a BER determining part, power is supplied to a first tuner and a second tuner for diversity reception. When the BER is smaller than the threshold, power supply to one of the first tuner and the second tuner is stopped for single reception. This structure allows power supply to one of the tuners to be stopped in excellent reception environments, thus reducing power consumption.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: October 19, 2010
    Assignee: Panasonic Corporation
    Inventors: Yasunobu Tsukio, Hiroaki Ozeki, Keiichi Kitazawa
  • Publication number: 20090063911
    Abstract: In digital broadcast receiver (100), when a bit error rate (BER) is larger than a threshold in BER determining part (109), power is supplied to tuner (103) and tuner (104) for diversity reception. When the BER is smaller than the threshold, power supply to one of tuner (103) and tuner (104) is stopped for single reception. This structure allows power supply to one of the tuners to be stopped in excellent reception environments, thus reducing power consumption.
    Type: Application
    Filed: April 27, 2006
    Publication date: March 5, 2009
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yasunobu Tsukio, Hiroaki Ozeki, Keiichi Kitazawa
  • Publication number: 20080136971
    Abstract: The object of the present invention is to provide a high-frequency signal receiving apparatus using a high-frequency signal receiver which performs diversity control by using tuners, wherein the first tuner comprises a first high frequency amplifier gain-controlled by the first gain controller, and a first amplifier gain-controlled by the second gain controller, and the second tuner comprises a second high frequency amplifier gain-controlled by the third gain controller, and a second amplifier gain-controlled by the fourth gain controller, and there is provided a receiving quality detector capable of detecting receiving quality, to which the outputs of the first gain controller, second gain controller, the third gain controller, and the fourth gain controller are connected, and single receiving or diversity receiving is selected by using the detection signal outputted from receiving quality detector.
    Type: Application
    Filed: December 4, 2007
    Publication date: June 12, 2008
    Inventors: Akira FUJISHIMA, Keiichi Kitazawa, Hirokazu Kitamura
  • Patent number: 7016803
    Abstract: In order to improve a response to a sensitivity of an accelerator pedal of a motor vehicle and a sudden acceleration of the vehicle, width of an insensitive zone provided in a vicinity of a portion of a first logic pattern for auto-cruise control, in which portion a difference of accelerator opening is zero, is made very narrow or a second logic pattern having substantially no insensitive zone is provided, which is selected under a specific condition such as when the vehicle runs on an ascending road.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: March 21, 2006
    Assignee: Hino Motors, Ltd.
    Inventor: Keiichi Kitazawa
  • Patent number: 7010408
    Abstract: Fuel consumption due to abrupt acceleration is reduced. An auto-cruising control is automatically started without intention of a driver and executes a control for gently and reasonably accelerating a vehicle even when an accelerator pedal is displaced abruptly. When a regular running state is detected, the auto-cruising control is started automatically. When the auto-cruising control is effective and the accelerator pedal is displaced substantially, fuel consumption is restricted by setting an aimed vehicle speed stepwise with small speed change, so that a large amount of fuel is not supplied.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: March 7, 2006
    Assignee: Hino Jidousha Kabushiki Kaisha
    Inventors: Keiichi Kitazawa, Hirofumi Yasui
  • Publication number: 20050075826
    Abstract: In order to improve a response to a sensitivity of an accelerator pedal of a motor vehicle and a sudden acceleration of the vehicle, width of an insensitive zone provided in a vicinity of a portion of a first logic pattern for auto-cruise control, in which portion a difference of accelerator opening is zero, is made very narrow or a second logic pattern having substantially no insensitive zone is provided, which is selected under a specific condition such as when the vehicle runs on an ascending road.
    Type: Application
    Filed: October 1, 2004
    Publication date: April 7, 2005
    Applicant: Hino Motors, Ltd.
    Inventor: Keiichi Kitazawa
  • Publication number: 20040128057
    Abstract: Fuel consumption due to abrupt acceleration is reduced. An auto-cruising control is automatically started without intention of a driver and executes a control for gently and reasonably accelerating a vehicle even when an accelerator pedal is displaced abruptly. When a regular running state is detected, the auto-cruising control is started automatically. When the auto-cruising control is effective and the accelerator pedal is displaced substantially, fuel consumption is restricted by setting an aimed vehicle speed stepwise with small speed change, so that a large amount of fuel is not supplied.
    Type: Application
    Filed: July 10, 2003
    Publication date: July 1, 2004
    Applicant: Hino Jidousha Kabushiki Kaisha
    Inventors: Keiichi Kitazawa, Hirofumi Yasui