Receiver and noise squelch control method

    公开(公告)号:US10396742B2

    公开(公告)日:2019-08-27

    申请号:US16111555

    申请日:2018-08-24

    Inventor: Hideaki Shiozawa

    Abstract: A noise squelch processor generates a noise squelch determination signal by comparing a noise level and a threshold value with each other. A carrier detector generates a carrier determination signal indicating whether or not a reception signal is present based on a signal strength of the reception signal. An integrator controller controls an integrator to set a cutoff frequency of the integrator to a second cutoff frequency higher than a first cutoff frequency at a first timing when the carrier detector generates a carrier determination signal indicating that the reception signal is present, and to switch the cutoff frequency of the integrator from the second cutoff frequency to the first cutoff frequency at a second timing after an elapse of a predetermined period from the first timing.

    RECEIVING CIRCUIT, RECEIVING DEVICE INCLUDING THE SAME, AND RECEIVING METHOD

    公开(公告)号:US20170135037A1

    公开(公告)日:2017-05-11

    申请号:US15345668

    申请日:2016-11-08

    Inventor: Hideaki Shiozawa

    CPC classification number: H04W52/029 H04B1/0014 H04B1/0017 H04B1/16 Y02D70/00

    Abstract: A receiving circuit includes a receiver configured to receive a signal, a detector configured to detect arrival of a reception signal based on a signal received by the receiver, a buffer configured to store therein data corresponding to the reception signal, a demodulation processor configured to demodulate data to be supplied, and a controller configured to store the data corresponding to the reception signal in the buffer when the detector does not detect the arrival of the reception signal, and to supply the data stored in the buffer to the demodulation processor when the detector detects the arrival of the reception signal.

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