| 摘要 |
<p>PURPOSE:To prevent the detection error of a frame-synchronizing signal during electronic editing, by recording a releasing signal for a detection protecting circuit for frame-synchronizing signal right before the frame-synchronizing signal in the beginning of recording. CONSTITUTION:In the beginning of recording, the output of synchronism releasing signal generator 19 is recorded as a releasing signal for detection protecting circuit 24 for frame-synchronizing signal provided at a reproduction side. Then, a frame- synchronizing signal is recorded via synchronizing pattern generator 14 following the said signal. At the reception side, when synchronism releasing signal detector 26 detects the releasing signal, a gate for synchronism releasing is opened for a certain time and the following frame-synchronizing signal is detected by detecting circuit 23 for frame-synchronizing signal. Thus, the detection error of the frame- synchronizing signal due to the discontinuance of data at an editing connection point can be prevented in case of electric editing.</p> |
