G - Physics – 11 – B
Patent
G - Physics
11
B
352/11, 352/18,
G11B 5/584 (2006.01) G11B 5/588 (2006.01) G11B 20/10 (2006.01) G11B 27/032 (2006.01) H04N 5/782 (2006.01) H04N 5/928 (2006.01) H04N 9/82 (2006.01) H04N 9/835 (2006.01)
Patent
CA 1201803
ABSTRACT OF THE DISCLOSURE Apparatus for reproducing an information signal comprised of a video signal, a PCM audio signal and four pilot signals from a plurality of parallel tracks extending obliquely on a magnetic tape, the video signal and one of the pilot signals being recorded in a field section of each track and the audio signal being recorded in a subsequent overlap section of each track, the four pilot signals being recorded in successive tracks, the apparatus including first and second rotary magnetic heads for scanning the tracks to reproduce the information signal, both heads being in reproducing contact with the tape during reproduction of the audio signal by one of the heads; four band-pass filters for separating the pilot signals, respectively, from the reproduced information signal, a selector circuit for selecting two of the pilot signals reproduced as cross-talk pilot signals from tracks adjacent to the track being scanned; AM detectors for detecting the levels of the cross-talk pilot signals and producing two error detection signals in response thereto; sample and hold circuits for sampling the error detection signals and holding the last sampled values of the two error detection signals during scanning of the field section of each respective track; and comparators for comparing the two last sampled values for each track to produce control signals to control the scanning of the subsequent overlap section of the same track by the same first or second head.
401941
Gowling Lafleur Henderson Llp
Sony Corporation
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