Patents by Inventor Tatsuaki Satoh

Tatsuaki Satoh 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).

  • Circuit for detecting the operational state of a television receiver
    Patent number: 4398220
    Abstract: The present invention comprises a tuning detecting circuit, a synchronization detecting circuit, an audio noise detecting circuit, a logic circuit and a muting circuit. According to the present invention, a tuning detecting circuit detects the tuning state (i.e., proper tuning, mistuning and slight mistuning) of the local oscillator. The tuning detecting circuit receives a pair of oppositely phased signals (AFT1, AFT2) from an automatic fine tuning circuit, and generates an output signal indicative of the tuning state of the local ascillator. A synchronization detecting circuit, receiving synchronizing signals and flyback pulses, determines whether the synchronization is maintained; this circuit generates an output signal indicative of the synchronization of the synchronizing signals and the flyback pulses.
    Type: Grant
    Filed: July 24, 1981
    Date of Patent: August 9, 1983
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventor: Tatsuaki Satoh