Apparatus for and method of synchronizing a local oscillator to a received digital bit stream
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United States of America Patent
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-
Dec 17, 1991
Grant Date -
N/A
app pub date -
Aug 22, 1989
filing date -
Aug 22, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An output of a local oscillator is synchronized to received bits of a digital bit stream by sampling the binary value of each of the received bits several times during each of the received bits, to derive for each received bit a several bit binary word representing the sampled values. A memory is addressed in response to the binary value of the several bit binary word to control the local oscillator synchronization. The synchronized local oscillator controls the sampling times of the plural samples of each of the received bits so that the binary value of the word controls the oscillator synchronization and the sampling times. The addressed word in the memory determines the value of the received bit, controls the oscillator synchronization, and provides indications of sync lock and unit content of each received data bit.
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