Programmable reference voltage generator for a read only memory
CA 1250954 A · Owner: Ami Spinco, Inc. · Inventors: Conkle, Cecil; Mahmood, Qazi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cecil Conkle, Qazi Mahmood, ABSTRACT, A read only memory (ROM) includes a series of bit lines biased by a reference voltage lead (102). The reference voltage lead (102) is connected to a first reference voltage generator (100) having an output impedance of 25 ohms and a second reference voltage generator (104) having an output impedance of 75,000 ohms. When the ROM is deselected, the first reference voltage generator (100) turns off and the bit lines are biased by the second reference voltage generator (100). However when the ROM, is selected, the first reference voltage generator (100) is turned on and biases the bit lines. In this way a ROM, is provided which can operate in a low power …
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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 March 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 7, 2006.
- 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.