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Expired Canadian patentCanada

Electronic apparatus control system

CA 1293560 C · Owner: Sony Corporation · Inventors: Fujita, Kosuke; Suematsu, Masayuki; Mogi, Takao

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A system for controlling electronic apparatus such as a television receiver, which employs a control circuit having a control program in a read only memory to sequentially communicate over an internal system bus in a predetermined interval with a plurality of controllable operational circuit blocks forming the electronic apparatus in which the control circuit selects a specific circuit block for data transfer upon a request signal. In one embodiment, a request signal is transmitted prior to a vertical blanking interval in a television signal and in another embodiment, a dedicated line is provided from a selected controllable unit to the control unit whereby the, request signal can be …

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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 December 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 28, 1986
GrantedDecember 24, 1991
Term endedDecember 24, 2008
Patent numberCA 1293560 C
Classification (IPC)G06F13/42 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedFeb 28, 1986Patent grantedDec 24, 1991Term endedDec 24, 2008

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.