Invisible Or Silent Tuning (epo) Patents (Class 348/E5.098)
  • Patent number: 8229380
    Abstract: A radio wave receiving apparatus includes: an antenna to receive a radio wave; a tuning member to allow a reception frequency of the antenna to be tuned to an intended frequency, in which tuning member a frequency characteristic is variable; a receiving member to receive a reception signal from the antenna to demodulate a modulation wave; a positive feedback member to perform a positive feedback in a signal path including the tuning member; and a switching member to turn on/off a feedback operation of the positive feedback member.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: July 24, 2012
    Assignee: Casio Computer Co., Ltd.
    Inventor: Kaoru Someya