| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a call arrival rate from being reduced even when the precision of a timer is deteriorated. SOLUTION: A reception window is opened for a period T1 (a period including several tens of bits each before and after a start pattern) to detect a start pattern (ST) denoting the start of one frame of an outgoing signal (reception signal). In the case that the start pattern cannot be detected within a period of reception window width T1, the reception window is closed after a period T1, and a period TL until the reception window is opened to receive a next signal is decreased by a periodΔTL. Furthermore, a period T1+Δm is newly set to a next new window width period T1 so that this window is closed later by a periodΔm. When the start pattern is successfully received, the period TL and the period T1 are gradually restored to the original values.</p> |
