Method and apparatus for rapid synchronization of shift register related symbol sequences
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United States of America Patent
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Aug 4, 2015
Grant Date -
Oct 30, 2014
app pub date -
Jul 6, 2014
filing date -
Jun 1, 2010
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Abstract
A sequence generator implemented on a receiver is synchronized with a sequence generator at a transmitter. The receiver receives k n-state symbols, with k>1 and n>1 wherein each of the k n-state symbols is associated with a generating state of the sequence generator at the transmitter. A processor in the receiver evaluates an n-state expression that generates an n-state symbol that is associated with a synchronized state of the receiver. Coefficients related to the n-state expression are stored on a memory and are retrieved by the processor. The synchronized state in one embodiment is part of a code hop. The sequence generator in the receiver may be part of a descrambler, of a communication device, of a data storage device and/or of an opening mechanism.
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