Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal gain processing
Patent
1993-05-26
1995-09-12
Hajec, Donald
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal gain processing
360 53, G11B 509
Patent
active
054503892
ABSTRACT:
Disclosed is a digital signal reproducing apparatus, which outputs the read signal after changing its signal level by using the non-linear circuit whose amplifying characteristic changes in accordance with the difference between the center level of the amplitude of that signal pattern in the read signal which varies in a relatively short period and the center level of the amplitude of that signal pattern in the read signal which varies in a relatively long period. Accordingly, the adverse influence of asymmetry can be reduced in the form of a read signal quantized with multiple values, so that a Viterbi decoder or the like which decodes such a multivalue-quantized signal can be connected directly to the apparatus.
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Hajec Donald
Le Thien Minh
Pioneer Electronic Corporation
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