| 摘要 |
PURPOSE:To obtain synchronizing information which is easily read at a header and has less chance of mis-detection at a video information section, by constituting the synchronizing information with a code of a maximum frequency with at least 1 word and another digital code of >=1 word. CONSTITUTION:In detecting a ''0101'' data (maximum frequency code) in 50-bit is detected from a reproduction serial data input applied to an input terminal 106, a multivibrator 102 is triggered and a drive output is obtained. A changeover switch 105 is switched to the (p) position with the drive output. A synchronizing detector 103 performs the synchronism detection with the collation of 19-30-bit in the synchronizing information and the synchronizing information is detected even if an error takes place in the 1-18-bit at the header. Further, a synchrnizing detector 104 detects the synchronism through the collation of all the bits of the synchronizing information, and in audio and video blocks, the synchronism is detected through the collation of all the 30-bit with this device 104. |
