Storage cell for analog recording and playback
CA 2207004 C · Owner: Tran, Hieu Van · Inventors: Tran, Hieu Van
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gate-follower storage cell (12) and a diode-connected storage cell (32) for use in integrated circuit analog signal recording and playback is disclosed. The gate-follower storage cell (12) is used in negative feedback mode to provide a one to one variation between the cell threshold and the gate voltage in the read mode. The diode-connected storage cell (32) is connected in a diode configuration to provide a one-to-one variation between the cell threshold and the gate voltage in the read mode. The gate-follower or diodeconnected storage cells may be implemented in a memory array for storing analog signals. In a preferred embodiment the memory array provides wordlines , which are …
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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 September 26, 1996 and granted March 6, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 26, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 2018.
- 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.