| 摘要 |
<p>@ A television signal processing apparatus comprises a source (9) of system television synchronizing signals, an analog-to-digital converter (1) for converting an input television signal to digital form, a digital-to-analog converter (7) for converting the digital signal back to analog form, a plurality of digital television signal processors (3 to 6) arranged in series between the analog-to-digital converter (1) and the digital-to-analog converter (7), at least one of the signal processors (3 to 6) being capable of frame synchronizing the digital television signal in dependence on a frame pulse supplied to the signal processor (3 to 6), and means associated with the digital-to-analog converter (7) for producing a frame pulse and for feeding the frame pulse back to each of the signal processors (3 to 6), or a least to a signal processor (3 to 6) capable of frame synchronizing the digital television signal and for synchronizing the produced frame pulse relative to the system television synchronizing signals.</p> |
