| 摘要 |
PURPOSE:To shorten pull-in time on synchronization by storing by deciding in which interval out of the intervals where one period of a reproducing clock is divided into (m) intervals a timing signal occurs. CONSTITUTION:A decoder 7 detects in which interval out of the intervals where one period of the reproducing clock is divided into the (m) intervals the timing signal exists at present by using a variable frequency divider 5 and a frequency divider 6, and count up by a counter (one of counters 9-1, 9-2,..., 9-m) taking charge of the present interval is enabled. An enabled counter counts the timing signal sequentially. The counter (one of counters 9-1, 9-2,..., 9-m) whose value arrives at (n) times issues a reset request to a reset timing generator 8. The reset timing generator 8 resets the variable frequency divider 5 and the frequency divider 6 so as to initialize the phase of the reproducing clock at the interval from where the reset request is issued. |
