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United States Patent 7,643,638
Hepler January 5, 2010

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System for generating pseudorandom sequences


Abstract
A system for generating pseudorandom codes using a register which contains an identification of the code tree leg of the desired code and a counter which outputs a successive binary sequence. The output from the counter is bit-by-bit ANDed with the output of the register, and those outputs are XORed together to output a single bit. As the counter is sequenced, each count results in a different bit that is output from the XOR gate, resulting in the desired code.


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Inventors: Hepler; Edward L. (Malvern, PA)
Assignee: InterDigital Technology Corporation (Wilmington, DE)

Appl. No.: 11/827,895
Filed: July 12, 2007

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Related U.S. Patent Documents

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Application Number Filing Date Patent Number Issue Date
10046601 Oct., 2001 7248698
60282349 Apr., 2001


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Current U.S. Class: 380/268 ; 370/209; 380/270
Current International Class: H04L 9/00 (20060101); H04J 11/00 (20060101); H04K 1/00 (20060101)