Pulse or digital communications – Repeaters – Testing
Patent
1991-11-14
1993-11-23
Kuntz, Curtis
Pulse or digital communications
Repeaters
Testing
375 18, 375101, 360 65, H04L 2701
Patent
active
052651258
ABSTRACT:
A signal detection apparatus detects original information from a PCM signal transmitted through a communication channel or reproduced from a recording medium. The apparatus includes: a first equalizer for equalizing the PCM signal so as to decrease intersymbol interference, a clock regenerator for regenerating a clock signal synchronized with a timing of the digital information from an output of the first equalizer; an amplitude detector for detecting an amplitude from the output of the first equalizer and the clock signal; a second equalizer for equalizing the output of the first equalizer to a partial-response equalized signal, and a detecting circuit for detecting the original digital information at a clock timing of the clock signal from the partial-response equalized signal. Accordingly, without being influenced by the amplitude fluctuations of the signal, the original digital information can be detected at a low bit error rate.
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Ghebretinsae T.
Kuntz Curtis
Matsushita Electric - Industrial Co., Ltd.
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