H - Electricity – 04 – N
Patent
H - Electricity
04
N
352/18, 352/10.3
H04N 9/44 (2006.01) G11B 19/28 (2006.01) H04N 5/76 (2006.01)
Patent
CA 1192660
ABSTRACT OF THE DISCLOSURE A rotary recording medium reproducing apparatus reproduces a recorded signal from a rotary recording medium by use of a reproducing element. The rotary recording medium is recorded with at least a first carrier signal which is modulated by an information signal having a synchronizing signal of a predetermined frequency. The reproducing apparatus comprises a motor for rotating the rotary recording medium, a reference signal generating circuit for generating a referenc signal having a frequency equal to a horizontal scanning fre- quency of a video signal of a standard television system which is characteristic of the reproducing apparatus and should originally be reproduced, or equal to 1/? (M is an integer) times the above horizontal scanning frequency, a detecting cir- cuit for detecting a signal respective of the rotational speed of the rotary recording medium, and a comparator for comparing the reference signal and the signal respective of the rota- tional speed of the rotary recording medium, to control the rotational speed of the rotary recording medium by a compared output signal thus obtained, so that the synchronizing signal within the reproduced signal is reproduced at a frequency equal to the horizontal scanning frequency of the above standard television system with which the reproduction should originally be performed.
472324
Aoike Hitoshi
Ikemura Yuichi
Kumazaki Toshimasa
Machida Toyotaka
Watanabe Yasuaki
Marks & Clerk
Victor Company Of Japan Ltd.
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