Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1979-08-15
1982-03-16
Yusko, Donald J.
Pulse or digital communications
Spread spectrum
Direct sequence
307273, 328140, H03B 304, H03K 500
Patent
active
043205275
ABSTRACT:
A bit synchronizing system for generating a timing signal corresponding to a transmitted pulse signal is disclosed in which the transmitted pulse signal is converted into a signal in which the number of pulses successively assuming the same polarity is limited to permit detection of frequency, the converted signal is integrated, a peak of integrated values is detected, the output of a voltage-controlled clock generator for generating the timing signal is processed in a similar manner to detect a peak with respect to the output, and the clock generator is controlled by a voltage corresponding to a difference between these two peaks, whereby the frequency of clock signal coincides with the bit rate of the transmitted pulse signal.
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Hitachi , Ltd.
Yusko Donald J.
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