| 摘要 |
<p>PURPOSE:To improve the jitter tolerance of an optical receiving circuit by providing a data transmission path with a delay circuit. CONSTITUTION:A delay circuit 6 provided on a data transmission line 4 gives a phase delay to the transmission line 4 to reduce the time difference from a clock signal which is given to an identification circuit 2 through a clock path 3, thereby improving the jitter tolerance in a low frequency range. Thus, a normal identification output is obtained from the identification circuit 2 even if the delay time of a filter in a clock extracting circuit is varied.</p> |
