Desynchronizer for adjusting the read data rate of payload data received over a digital communication network transmitting payload data within frames
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United States of America Patent
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Apr 4, 1995
Grant Date -
N/A
app pub date -
Aug 25, 1992
filing date -
Aug 25, 1992
priority date (Note) -
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Abstract
A desynchronizer for processing pointer movements and stuff bit information associated with payload data transmitted within a synchronous digital communication network. The desynchronizer includes a payload extractor (58) for removing payload data and storing it in an elastic store (32). The extractor also removes the pointer and stuff bit information which is passed through a digital low pass bit leaking module (36). The difference between the write and read addresses of the elastic store is determined (modules 48 and 50) and algebraically combined with the output of the bit leaking module (36) so as to provide the necessary data for adjusting the instantaneous frequency of a variable controlled oscillator (44) that generates the timing base for the read clock for reading the payload from the elastic store in a manner that minimizes jitter.
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