Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal gain processing
Patent
1994-08-25
1995-04-18
Psitos, Aristotolis
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal gain processing
369124, G11B 700
Patent
active
054084563
ABSTRACT:
A method of and apparatus for reproducing data from a recording medium on which data is recorded as an arrangement of pits of predetermined lengths, formed at intervals, the pits including at least two kinds of pits differing in the level of a detection signal generated when the pits are detected, and the interval between the pits having at least two kinds of values. A signal subjected to modulation by the pits is read out from the medium. The read-out signal is compared with each of a plurality of reference values having different values. A clock signal is generated from a signal representing a comparison of the read-out signal with a smallest reference value of the plurality of reference values. The interval between the pits is detected from the read-out signal using the generated clock signal as a reference. Data is reproduced from the result of the comparison and the detected interval between the pits.
REFERENCES:
patent: 3274582 (1966-09-01), Gibson
patent: 5084852 (1992-01-01), Bailey
patent: 5097459 (1992-03-01), Yoshio
Canon Kabushiki Kaisha
Psitos Aristotolis
Wilkinson Duncan
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