Current comparator circuit
CA 1115357 A · Owner: Sony Corporation · Inventors: Okada, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A current comparator circuit is composed of an input signal current source, plural pairs each consisting of a diode and reference current source, and plural switching elements. The pairs each consisting of a diode and reference current source are connected in series or in parallel to the input signal current source. Each switching element is a transistor which is connected to the connection point between the paired diode and reference current source, and a compared output can be obtained from the collector of the transistor.
Read the whole patent
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 December 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 1998.
- 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.