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:
Aug. 19, 1997
Filed:
Oct. 17, 1995
Wuudiann Ke, Lawrenceville, NJ (US);
Duy K Le, Levittown, PA (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
Verification of test information transmitted across an 1149.1 backplane test bus between a circuit board (12.sub.1) and a test master (14) is accomplished by having both the test master and the circuit board compute a cheek code for each block of information that is transmitted by, or received at, the board. During intervals other than one of the active Boundary-Scan states, the test master (14) acquires the check codes produced at the circuit board (12.sub.1) and compares them to the corresponding codes generated by the tests master. Any difference between the corresponding codes generated by the test master and the circuit board signifies a transmission error.