Television horizontal oscillator frequency control arrangement for use with tape recorder
CA 1104710 A · Owner: Rca Corporation · Inventors: Fernsler, Ronald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A television receiver used in conjunction with a video tape recorder having a step change in phase of the horizontal synchronizing pulse occurring prior to the vertical blanking signal produces a distorted video display. The video distortion results from too slow slewing of the horizontal oscillator phase-locked loop to the new phase. In order to reduce the video distortion the phase-locked, loop filter is switched to a high gain condition at a time before the end of the vertical scanning interval. -1-
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 July 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 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.