| 摘要 |
In a flying spot telecine including cathode ray tube scanning circuit for generating flying spot and a photodetector for receiving light transmitted by a film strip being scanned by the telecine, a control circuit is provided for causing the CRT scanning circuit to scan an area (18) corresponding to the position of one or more perforations (16) in the film strip (10) being scanned. The output from the photodetector during a scan of the area (18) provides a correction signal for adjusting the video signal level. Preferably, the scan of the area (18) is performed during line blanking or frame blanking periods.
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