Interactive video disc systems
CA 1210862 A · Owner: Rodesch, Dale F. · Inventors: Rodesch, Dale F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Invention An interactive video disc system employs discs in which video presentations are arranged in parallel in a single spiralled track by being arranged in adjacent turns, or portions of turns, of the spiral. Additional capacity for interaction is achieved by the use of multiple heads and switching from one presentation to another during the formation of picture lines.
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 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 2, 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.