| 摘要 |
Apparatus having corresponding methods comprise: a first squelch circuit configured to detect possible squelch signals in a communication signal; and a second squelch circuit configured to i) operate in a low-power state responsive to the first squelch circuit detecting none of the possible squelch signals in the communication signal, and ii) operate in a high-power state responsive to the first squelch circuit detecting one of the possible squelch signals in the communication signal.
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