Recording and playback integrated system for analog non-volatile flash memory
CA 2257730 A1 · Owner: Holzmann, Peter · Inventors: Kordesch, Albert; Liu, Chun-Mai; Van Tran, Hieu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An analog recording and playback system using non-volatile flash memory is disclosed. An array of flash memory cells is used to store an analog signal and retrieve the stored analog signal on a real-time basis. A plurality of column driver circuits are coupled to the columns of flash memory cells for simultaneous programming and reading. A programming algorithm is used to write the analog signal within an operating range of the flash memory cells since the operating range may shift due to process variations. The system includes trimbit circuits to provide a trimmable initial programming voltage programming, step, programming current read current, and select gate, voltage. The system further …
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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 6, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 6, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 6, 2021.
- 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.