| 摘要 |
<p>In a pulse sensor for sensing keyed pulses for a keyed AFC for use in a high-definition satellite broadcast receiver, pulse signals supplied thereto are differentiated by differentiating circuit means and amplified by a dc amplifier. The amplified signal is transformed by window comparator means such that the resultant signal has a fixed voltage level and is output as a pulse sense signal. The sensor circuit is simplified and can be easily manufactured in an integrated circuit configuration. <IMAGE></p> |
