Interactive television system for providing full motion synched compatible audio/visual displays from transmitted television signals
CA 1283202 C · Owner: Freeman, Michael J. · Inventors: Freeman, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An interactive television system for providing full motion synched compatible audio visual displays based on dynamic user selection of a plurality of syllable synched compatible audio choices for a common full motion video frame presentation received over a common television channel. Two or more audio channels are synched to a common video channel, with the video being compatible with all audio channels. The interactive programming is transmitted via broadcast or cable TV and received by VCR used as a tuner or by a simplified TV head-end tuner with, the transmitted television signal having the audio channels either multiplexed into the video line or the existing audio channels. The received …
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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 April 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 2008.
- 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.