US 6,983,407 B2 | ||
Random pattern weight control by pseudo random bit pattern generator initialization | ||
Joerg Georg Appinger, Aidlingen (Germany); Michael Juergen Kessler, Herrenberg (Germany); and Manfred Schmidt, Schoenaich (Germany) | ||
Assigned to International Business Machines Corporation, Armonk, N.Y. (US) | ||
Filed on Jun. 11, 2003, as Appl. No. 10/458,895. | ||
Claims priority of application No. 02013125 (EP), filed on Jun. 14, 2002. | ||
Prior Publication US 2003/0233607 A1, Dec. 18, 2003 | ||
Int. Cl. G01R 31/28 (2006.01); G06F 11/00 (2006.01) |
U.S. Cl. 714—739 | 11 Claims |
1. A method for controlling the weight of a pseudorandom output pattern generated by an electronic circuit, comprising the
steps of:
using a plurality of pseudorandom pattern generators (PRPGs) to provide respective sequences of pseudorandom bit-patterns,
each of said PRPGs having a predetermined length corresponding to a bit count of an initial state, a predetermined loop count
corresponding to a length of a pseudorandom bit-pattern that is repeated indefinitely;
feeding an output from each of said PRPGs to a corresponding input of a common logical OR-gate; and
initialising a selected subset of said PRPGs with a random-state, a zero-state or a weight-state in order to generate a weighting
pattern comprising a pseudorandom bit-pattern, a zero-pattern or a weight-pattern, respectively, whereby the output of said
logical OR-gate provides an output pattern reflecting said weighting pattern.
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