Patents by Inventor Hirochika Kashima

Hirochika Kashima 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).

  • High frequency receiving device, integrated circuit used for the same, and TV receiver using them
    Patent number: 7184733
    Abstract: An oscillation frequency changing means is inserted between a tuner and an oscillator of local oscillator (56) of a high frequency receiving device, and the oscillation frequency changing means, in each frequency band received, changes the oscillation frequency characteristic of local oscillator (56) in relation to the tuning voltage supplied from PLL circuit (78), and operates in accordance with the frequency characteristic of tuning filter (52, 54, 62, 64) to obtain an oscillation signal varied just by a predetermined frequency, thereby making it possible to receive broadband channels of continuous VHF broadcast band and UHF broadcast band.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: February 27, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Sanae Asayama, Koji Nakatsuji, Atsuhito Terao, Yoshihide Tabata, Hideji Takami, Masanori Suzuki, Hirochika Kashima
  • High frequency receiving device, integrated circuit used for same, and TV receiver using them
    Publication number: 20050032492
    Abstract: An oscillation frequency changing means is inserted between a tuner and an oscillator of local oscillator (56) of a high frequency receiving device, and the oscillation frequency changing means, in each frequency band received, changes the oscillation frequency characteristic of local oscillator (56) in relation to the tuning voltage supplied from PLL circuit (78), and operates in accordance with the frequency characteristic of tuning filter (52, 54, 62, 64) to obtain an oscillation signal varied just by a predetermined frequency, thereby making it possible to receive broadband channels of continuous VHF broadcast band and UHF broadcast band.
    Type: Application
    Filed: June 24, 2004
    Publication date: February 10, 2005
    Inventors: Sanae Asayama, Koji Nakatsuji, Atsuhito Terao, Yoshihide Tabata, Hideji Takami, Masanori Suzuki, Hirochika Kashima