| 摘要 |
<p>VIDEO RECORDER A phase locked servo drive for a video recorder is synchronized with horizontal sync information from an incoming video signal. The sync information divided to a base frequency selected for a tachometer in the servo loop. A monostable multivibrator is used as the divider and is provided with a time constant which will permit it to divide any higher frequency sync signals to the same base frequency. The recorder thus automatically accepts and locks to appropriate horizontal sync from high resolution video signals.</p> |
