Method and apparatus for detecting pulse signal for generating c

Details Method and apparatus for detecting pulse signal for generating c Method and apparatus for detecting pulse signal for generating c

1994-08-10

1995-07-25

Canney, Vincent P.

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal gain processing

360 51, G11B 509

Patent

active

054368812

ABSTRACT:
A method and apparatus for detecting pulse signals corresponding to marks from a recording medium on which the marks are periodically recorded. The recording medium is scanned with a reproducing transducer and a reproduction signal (including the pulse signals) is read out. A gate signal with a predetermined width is generated on the basis of the pulse signal which has been detected at k period before the pulse signal to be detected, where k is an integer more than 1. If the pulse signal before k period is missing, the gate signal with a predetermined width is generated on the basis of the pulse signal which has been detected at k+1 period before. Only the pulse signal existing within the period during which the gate signal is output is extracted from the reproduction signal.

REFERENCES:
patent: 4580176 (1986-04-01), Graves et al.
patent: 4933782 (1990-06-01), Simonson et al.
patent: 4979192 (1990-12-01), Shimizume et al.

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