Patents by Inventor Kanji Oda

Kanji Oda 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: 4249259
    Abstract: A digital channel selection apparatus comprising a memory, a digital-to-analog converter for converting digital information read out of the memory to an analog tuning voltage, a voltage-controlled tuner which is tuned to an incoming RF carrier frequency on a selected channel in response to the analog tuning voltage, an automatic fine tuning discriminator connected to the tuner and a digital automatic fine tuning circuit responsive to the automatic fine tuning discriminator to vary the analog tuning voltage to effect an automatic fine tuning control, in which in addition to the digital automatic fine tuning control an analog automatic fine tuning control is effected to carry out reliable automatic fine tuning control. To this end, a small fraction of an analog output voltage, from the automatic fine tuning discriminator, which has a magnitude dependent upon an output intermediate carrier frequency of the tuner is superposed onto the output voltage of the digital-to-analog converter.
    Type: Grant
    Filed: April 16, 1979
    Date of Patent: February 3, 1981
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Kanji Oda, Hisashi Nakano