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:
Jul. 30, 1996
Filed:
Oct. 19, 1995
Bryan D Marietta, Dallas, TX (US);
Douglas A Oppedahl, Garland, TX (US);
Convex Computer Corporation, Richardson, TX (US);
Abstract
Circuitry 300 is disclosed for isolating faults in a path 304 transmitting data words each having at least one data bit and at least one parity bit. Circuitry 300 includes a plurality of exclusive-OR gates 303 each having a first input coupled to the data path 304 for receiving a bit of a one of the data words being transmitted along path 304. A plurality of multiplexers 305 are also provided, each multiplexer 305 including a first input coupled to an output of a corresponding one of the exclusive-OR gates 303 and a control signal input for receiving a control signal. A plurality of registers 306 have an input coupled to an output of a corresponding one of the multiplexers 305 and an output coupled to a second input of a corresponding one of the exclusive-OR gates 303 and a second input of the corresponding one of the multiplexers 305. Each multiplexer 305 is operable to pass a bit presented at the output of the corresponding exclusive-OR gate 305 to the corresponding register 306 in response to a first state of the control signal and pass a bit presented at the output of the corresponding register 306 to the input of the corresponding register 306 in response to a second state of the control signal.