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Expired Canadian patentCanada

Solid state television camera

CA 1107387 A · Owner: Sony Corporation · Inventors: Nagumo, Fumio

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 solid state television camera having a solid state image sensor onto which an image of an object is projected a sampling, hold circuit supplied with an output signal derived from the solid state image sensor, a level detecting circuit for the derived output signal and a control circuit supplied with an output signal from the level detecting circuit in which a detecting level is selected as a predetermined level at a reference time which differs from the arrival time of the sampling signal by a predetermined time interval. The solid state television camera can remove noise caused by defects in the solid state image sensor by a defect compensating operation. -i-

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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 August 18, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 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.
FiledApril 25, 1977
GrantedAugust 18, 1981
Term endedAugust 18, 1998
Patent numberCA 1107387 A
Classification (IPC)H04N5/34 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedApril 25, 1977Patent grantedAug 18, 1981Term endedAug 18, 1998

Sources & verification

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