Information signal reproducing apparatus

Details Information signal reproducing apparatus Information signal reproducing apparatus

H - Electricity

04

N

352/32.2

H04N 5/76 (2006.01) G11B 5/012 (2006.01) G11B 7/00 (2006.01) G11B 19/24 (2006.01) G11B 20/10 (2006.01)

Patent

CA 1185011

ABSTRACT OF THE DISCLOSURE An information signal reproducing apparatus for re- producing from a disc having recorded thereon a pulse code modulated (PCM) signal which is modulated in a run length limited code is disclosed, in which a reproduced signal is compared with a threshold voltage by a comparing circuit so as to be converted in waveform, a maximum or minimum transition interval of the signal with the waveform converted is detected, and a counter is used to control the threshold voltage in such a manner that a positive polarity part and a negative polarity part of the maximum or minimum transition interval will be equal to each other.

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