| 摘要 |
PURPOSE:To regenerate a reproduction sampling point at a position approximately equal to that of a recording mode by recording and reproducing a reference burst signal which controls the phase of a sampling pulse for resampling in a reproduction mode with multiplexing to a video signal. CONSTITUTION:The video signal of a wide band which is applied to an input terminal 1 is sampled and held with a sampling frequency fs by a sampler 2 and applied to a switch 13. While a signal generator 3 produces a reference burst signal of a specific section within a vertical flyback time of an input video signal. This reference burst signal is multiplexed to the video signal and extracted through a switch 13. In this case, a time division multiplex signal is supplied to a recording system of a recording/reproducing device 4. Then the reproduced time division multiplex signal of the device 4 is supplied to the generator 3, a 1H-delay circuit 6 and an LPF11 respectively. Then a reproduced video signal is delivered as it were sampled with a frequency 2fs, through samplers 5, 7, an adder 8, a high-pass filter 9, and a mixer 10. |
