SMEAR CORRECTING SYSTEM

PURPOSE:To correct a smear at low cost by omitting the recording signal of a picture signal at the time of detecting the smear of a solid-state image pickup element to record and compensating the omitted recording signal at the time of a reproduction. CONSTITUTION:Since it is not understood that at...

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Bibliographic Details
Main Author KATSUKI SHINJI
Format Patent
LanguageEnglish
Published 25.08.1989
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Summary:PURPOSE:To correct a smear at low cost by omitting the recording signal of a picture signal at the time of detecting the smear of a solid-state image pickup element to record and compensating the omitted recording signal at the time of a reproduction. CONSTITUTION:Since it is not understood that at which point the smear is actually generated in a recording system, after a generating point is detected by a flip flop(FF) 6, a timing processing is executed so as to have a signal extending through a next horizontal period by a FF7 and a video signal is delayed by 1H in a video processing part 4 to obtain a smear generating signal simultaneous with a smear generating line. According to the smear generating signal, a drop out is intentionally generated on the part of the horizontal line H10 of a recording FM signal. Then, when this recording signal is reproduced in a reproducing system, a drop out correcting circuit is operated to insert the video signal of a preceding line, for instance, to the omitted line due to the generation of the smear correct the smear. Thereby, the smear can be corrected at low cost.
Bibliography:Application Number: JP19880036270