Digital television special effect waveform generator
CA 1203894 A · Owner: Nippon Electric Co. Ltd. · Inventors: Takahashi, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital television special effect waveform generator produces a gate signal used for composing two video signals as a special effect provided with a waveform having a soft width in which these two video signals are gradually alternated, according to the direct digital calculation of digital data consisting of a stating address a central, address and an aspect ratio of the waveform. As a result a special, effect waveform for smoothly alternating two video signals can be easily obtained with a comparatively simple digital circuit configuration prevented from the injurious influence of noise.
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 April 29, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 29, 2003.
- 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.