SMEAR CORRECTING SYSTEM

• Main Author: KATSUKI SHINJI
• Format: Patent
• Language: English
• Published: 25.08.1989
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

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.