Energy economized pass-transistor logic circuit and full adder using the same
CA 2240288 C · Owner: Samsung Electronics Co. Ltd. · Inventors: Joe, Eu-Ro; Kang, Geun-Soon; Kim, Seong-Won
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an energy economized, pass-transistor logic having a level restoration circuit (50) free from leakage and a full adder using the same. The logic comprises a functional block (10) having a plurality of n type FET's (MI...M4), for performing at least one logical function of inputs (12 14, 16, 18) to generate two complementary signals (20 22), the complementary signals (20, 22) being a weak high level signal and a strong low level signal; and a level restoration block (50) having first and second CMOS inverters (52,54), for restoring the weak high level signal to a strong or full high level signal and preventing a leakage current flowing through one of the first and the second …
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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
- Filed January 30, 1997 and granted April 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 30, 2019.
- 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.