The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 1995
Filed:
Mar. 30, 1994
Alfred L Crouch, Austin, TX (US);
Matthew D Pressly, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A data processing system (10) has a test controller (12). The test controller (12) has a pattern generator (18) for receiving a seed value and generating many pseudo-random values from the seed value. A re-seed and compare circuit (22) monitors the pattern generator (12) and determined when the seed value repeats in the pseudo-random number sequence generated by the generator (18). Once circuit (22) determines that the seed value has repeated the control circuit (20) allows the generator (18) to clock once more and latches a new seed value into the circuit (22). Therefore, the pattern generator through the compare/store function of circuit (22) and the control of circuit (20) is self re-seeding and generates a longer string of pseudo-random numbers with minimal logic.