Full adder circuit
CA 1232073 A · Owner: Koninklijke Philips Electronics N.V. · Inventors: Vandenbulcke, Christian J.B.O.E.; Persoon, Eric H.J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
16-, ABSTRACT :, "Full adder circuit". So as to generate quickly the several carry signals in a full adder circuit (for example a 40-bit circuit), tile circuit is divided into a plurality of sub-circuits of a first type, in which provisional carry signals are generated in parallel. Carry look-ahead circuits are of a dual construction, each first carry look-ahead circuit receiving a logic "O" and each second carry look-ahead circuit receiving a logic "1". So the provisional carry signals generated are complementary from which the carry signal proper is selected with the aid of a multiplex switch. The multiplex switch is controlled by the carry signal generated in a preceding subcircuit of …
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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 January 26, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 2005.
- 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.