| 摘要 |
<p>A vertical synchronizing signal detecting method is disclosed which comprises the steps of detecting a unit signal from a complex synchronizing signal including a vertical synchronizing signal formed of a predetermined number of continuous unit signals each having a predetermined waveform, counting a number of the unit signals, and producing a detecting signal having a predetermined timing relation to the vertical synchronizing signal when it is detected that the unit signals continuously arrive with the above predetermined number.</p> |
