Television receiver
CA 1250364 A · Owner: Sony Corporation · Inventors: Matsuzaki, Atsushi; Saito, Mitsumasa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A television receiver is disclosed which includes, a cathode ray tube, a beam current detection circuit having a current source circuit connected to the cathode of the cathode ray tube at a first terminal side of a power supply source, a current sink circuit connected to the cathode of the cathode ray tube at a second terminal side of the power supply source, a subtracting circuit for subtracting the current of the current source circuit from the current of the current sink circuit, and an utilization circuit connected to the subtracting circuit, whereby the ABL(automatic brightness limiting) circuit can be correctly operated without being affected by the parasitic capacity and so on and …
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 February 21, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 21, 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.