Serial testing technique for embedded memories
CA 1286803 C · Owner: Bell-Northern Research Ltd. · Inventors: Agarwal, Vinod Kumar; Nadeau-Dostie, Benoit; Silburt, Allan Lloyd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A testing circuit interfaces serially with the data path of an embedded memory circuit formed from at least one memory unit having separated data input and output lines and tandem addressing. Part of the testing circuit is a series of two-input multiplexer units which are adapted to be embedded on the same chip as the memory circuit. The outputs of the multiplexer units connect to a respective one of the data input lines of the memory circuit. Excepting the first bit position a first input of each, multiplexer unit is adapted to connect to the data output line of the adjacent bit position in the memory circuit. The second inputs of the multiplexer units are adapted to connect to the data …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.