Vertical deflection system for a television receiver
CA 1086419 A · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Shiotani, Tomokazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A TELEVISION RECEIVER ABSTRACT of THE DISCLOSURE, A vertical deflection system for a television receiver produces a sawtooth wave signal of a high linearity by high speed charge (or discharge) of a capacitor and a low speed discharge (or charge) thereof at a constant current rate, compares a deflection current flowing in a vertical deflection coil with the sawtooth wave signal in a differential amplifier to correct the deflection current whereby the amplitude and linearity of the vertical deflection are automatically corrected. The amplitude of the vertical deflection can be adjusted without affecting other characteristics.
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 September 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 1997.
- 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.