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:
Sep. 26, 2000
Filed:
Apr. 13, 1998
Tapan Jyoti Chakraborty, West Windsor, NJ (US);
Lucent Technologies, Inc., Murray Hill, NJ (US);
Abstract
Apparatus and method for testing the components and interconnections of a circuit board while the circuit board is, normally, operatively connected in a system. The circuit board contains a plurality of integrated circuits with at least one of the integrated circuits including interface circuitry for interfacing the circuitry on the circuit board to the rest of the system. The circuit board includes testing circuitry for: (a) selectively testing the circuits contained on the circuit board, other than its interface circuits; and (b) selectively testing the interface circuits and their interconnections. The method of the invention includes placing the interface circuitry in a first state for isolating the circuitry on the circuit board from the rest of the system and testing the circuitry on the circuit board, other than the interface circuitry; and placing the interface circuitry in a second state and testing the interface circuitry and its interconnections.