Random pattern weight control by pseudo random bit pattern...

Details Random pattern weight control by pseudo random bit pattern... Random pattern weight control by pseudo random bit pattern...

2006-01-03

2006-01-03

Torres, Joseph D. (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital logic testing

C714S728000

Reexamination Certificate

active

06983407

ABSTRACT:
A plurality of pseudo random bit-pattern generators (PRPGs), advantageously linear feedback shift registers (LFSRs), having predetermined lengths and individual different tap locations for providing a respective sequence of pseudorandom bit-patterns. An output from a predetermined respective tap location at each LFSR is fed to a common OR-gate, a selected subset of the LFSRs are initialized with all bit storing locations to “0” in order to generate a respective permanent “0”-bit sequence, and the output of the OR-gate is used for reading the weighted or flat random bit output-pattern thereof. By controlling the number of zero-set LFSRs—a subset of the LFSRs—the weight of the generated output-pattern can be controlled.

REFERENCES:
patent: 4503537 (1985-03-01), McAnney
patent: 4513418 (1985-04-01), Bardell, Jr. et al.
patent: 4905241 (1990-02-01), Schmid et al.
patent: 5297151 (1994-03-01), Gruetzner et al.
patent: 5394405 (1995-02-01), Savir
patent: 5983380 (1999-11-01), Motika et al.
Martinez, M.; Bracho, S.; Weighted BIST structures in the arithmetic unit of a communication processor; IEE Proceedings-Computers and Digital Techniques, vol.: 142, Issue: 5, Sep. 1995, pp.: 360-366.
Zhang, X.; Roy, K.; Design and synthesis of low power weighted random pattern generator considering peak power reduction; International Symposium on Defect and Fault Tolerance in VLSI Systems, Nov. 1-3, 1999, pp.: 148-156.
Cellular Automata Digital Worlds, A. Schatten, pp. 1-18, http://www.ifs.tuwien.ac.at/˜aschatt/info/ca/.
“Biased Random Pattern Test Generation”, IBM Technical Disclosure Bulletin, pp. 411-412, Jul. 1990.

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