Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal level detecting using a reference signal
Reexamination Certificate
2005-04-05
2005-04-05
Tran, Thang V. (Department: 2652)
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal level detecting using a reference signal
C369S059180, C369S059210
Reexamination Certificate
active
06876616
ABSTRACT:
A binarizing device operates for controlling a slice level relative to a DC level of a reproduced signal in response to a slice level control signal to generate a controlling-resultant slice level, and for comparing the reproduced signal with the controlling-resultant slice level to convert the reproduced signal into a binary signal. A signal generating device operates for generating the slice level control signal in response to the binary signal. An offset detecting device operates for detecting an offset in a modulation-resultant-code pattern in response to the binary signal, and for generating code pattern offset information in response to the detected offset. An offset-responsive controlling device operates for implementing one of (1) changing a response characteristic of a loop formed by the binarizing device and the signal generating device and (2) suspending the slice level control by the binarizing device in response to the code pattern offset information.
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“A Study of Digital Auto Equalizer and PLL System Using Maximum Likelihood Error for Digital VCRs” by Tonami et al.; IEEE Transactions on Consumer Electronics, vol. 43, No. 3, Aug. 1997, pp. 934-944.
Battaglia Michael V.
Tran Thang V.
Victor Company of Japan Ltd.
Woo Louis
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