| 摘要 |
PROBLEM TO BE SOLVED: To provide an output determination circuit capable of determining a 'noisy' state of an output of a squelch circuit, and a sensitivity adjustment circuit for eliminating the 'noisy' state of the output of the squelch circuit. SOLUTION: The output determination circuit 1 has a flip-flop 11 in which an output OUT0 changes from an initial level to an inversion level when an output Vout of the squelch circuit 100 is "high" when a clear signal is released or when the output Vout of the squelch circuit 100 rises from 'low' to 'high' after the clear signal is released, a flip-flop 12 in which an output OUT 1 changes from an initial level to an inversion level when the output Vout of the squelch circuit falls from 'high' to 'low' after the clear signal is released, and a determining part 13 for determining an output state of the squelch circuit 100 by output levels of the output OUT0 of the flip-flop 11 and the output OUT1 of the flip-flop 12 after releasing the clear signal. COPYRIGHT: (C)2008,JPO&INPIT
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