Apparatus for producing digital information from a transmission

Details Apparatus for producing digital information from a transmission Apparatus for producing digital information from a transmission

1984-02-09

1987-01-13

Canney, Vincent P.

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

H04N 576

Patent

active

046370064

ABSTRACT:
An apparatus is described for reproducing digital information from an optically readable disc. In order to measure the phase difference between a channel clock and the intersections of the data signal being read with a decision level, samples on both sides of said intersections are interpolated and the amplitudes of the samples are compared with the decision level. The amplitude difference is a measure of the phase difference.

REFERENCES:
patent: 4544838 (1985-10-01), Moska
patent: 4561081 (1985-12-01), Janssen et al.

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