| 摘要 |
PURPOSE:To reduce final error, by recording a data from digital information with error detection and encoding together with a synchronizing signal added with a start and a stop bit at each block and performing a specified reproduction and error recorrection. CONSTITUTION:A start-bit 1 in 3-bit and a stop-bit 3 in 2-bit are added before and after an encoded data 2 in 32-bit obtained from digital information through error coding and recorded on a video disc 10 together with a synchronizing signal. A TV signal reproduced from the disc 10 is given to a synchronizing separation circuit 31, where an HD and a VD signal is separated and inputted to a level slice circuit 33. The data picked up via a timing generating circuit 32 is given to a block number count circuit 36 via a decision by majority circuit 34 and a separation circuit 35. If the count block has an error in the circuit 36, a signal is outputted to a code reproducing circuit 37. On the other hand, an error signal E is outputted from the circuit 37 to a data from the circuit 35 and reproduction is made again with a controller 38. Thus, final error can be reduced. |
