| 摘要 |
PURPOSE:To perform an accurate formation of program, by carrying out odd times of sampling in accordance with the data of the bit period for the reproduced digital information of a video disk via an integration circuit and a Schmit mitt trigger circuit and then deciding the majority. CONSTITUTION:The program data reproduced from a video disk player 11 is stored n a microcomputer part 15. A digital signal reproducing part 13 includes an analog switch 18, an integration circuit 19 and a reset switch 20. In addition, a Schmitt trigger circuit 22 which can control the output of the circuit 19 through a controller 21 is provided along with a sampling register 23, a majority circut 24, a latching circuit 25, etc. Sampling pulses are set to an odd number for a timing pulse generating circuit 26, and 1 and 0 are delivered serially to the circuit 25 as a result of the decision given in a horizontal scanning period. The output of the circuit 25 is fed to a computer 15 via a serial-parallel converting circuit 14. In such a way, the data recorded on a video disk can be accurately reproduced. |
