Duplicated memory system having status indication
CA 1102007 A · Owner: Northern Telecom Limited · Inventors: Sood, Prem L.; Stewart, Charles G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A fully duplicated memory system for a single central processing unit (CPU) is disclosed. The memory system comprises a primary and a secondary control unit and a primary memory bank and a secondary memory bank. Each memory bank comprises one memory controller and a plurality of memory modules (e.g. six memory modules). Each memory module stores a plurality of binary words in distinct addressable storage locations with a unique address code defining both one distinct addressable storage location in a memory module in the first memory bank and one distinct addressable storage location in a memory module in the second memory bank. A random access memory (RAM) …
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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 May 26, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 1998.
- 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
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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.