Digital phase locked loop apparatus

Details Digital phase locked loop apparatus Digital phase locked loop apparatus

1993-04-26

1995-05-16

Chin, Stephen

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

331 11, 360 26, 369109, H03L 720

Patent

active

054168090

ABSTRACT:
A digital phase-locked loop circuit for compact discs is provided. Averaging circuits are used to determine the wavelength of each pattern in an eight-to-fourteen modulation signal reproduced from a given compact disc by computing an average value of the lengths of the patterns.

REFERENCES:
patent: 4308505 (1981-12-01), Messerschmitt
patent: 4763342 (1988-08-01), Ambrosio et al.
patent: 4845685 (1989-07-01), Wechsler et al.
patent: 4901300 (1990-02-01), Van Der Zande et al.
patent: 4972398 (1990-11-01), Wachi
patent: 5012204 (1991-04-01), Storz et al.
patent: 5172357 (1992-12-01), Taguchi

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