Dynamic information storage or retrieval – Binary pulse train information signal – Including sampling or a/d converting
Reexamination Certificate
2005-07-05
2005-07-05
Young, W. R. (Department: 2652)
Dynamic information storage or retrieval
Binary pulse train information signal
Including sampling or a/d converting
C369S047350, C369S059160
Reexamination Certificate
active
06914867
ABSTRACT:
A signal of a run-length-limited code is reproduced from a recording medium. The reproduced signal is sampled to generate a sampling-resultant signal. An odd-sample signal and an even-sample signal are generated in response to the sampling-resultant signal. A first transversal filter subjects the odd-sample signal to first partial-response waveform equalization to generate an equalization-resultant odd-sample signal. The first partial-response waveform equalization depends on first tap coefficients. The first tap coefficients are controlled on a feedback basis to minimize an error of the equalization-resultant odd-sample signal. A second transversal filter subjects the even-sample signal to second partial-response waveform equalization to generate an equalization-resultant even-sample signal. The second partial-response waveform equalization depends on second tap coefficients. The second tap coefficients are controlled on a feedback basis to minimize an error of the equalization-resultant even-sample signal. The equalization-resultant odd-sample signal is decoded. The equalization-resultant even-sample signal is decoded.
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Chow Lixi
Victor Company of Japan Ltd.
Woo Louis
Young W. R.
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