Network delivery of interactive entertainment complementing audio recording
CA 2553159 A1 · Owner: Gracenote, Inc. · Inventors: Greenberg, Ann E.; Roberts, Dale Tyron
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Entertainment content complementary to a musical recording is delivered to a user's, computer by means of a computer network link. The user employs a browser to access the, computer network. A plug-in for the browser is able to control an audio CD or other, device for playing the musical recording. A script stored on the remote computer accessed, over the network is downloaded. The script synchronizes the delivery of the complementary entertainment content with the play of the musical recording.
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
- Filed April 15, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 15, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2020.
- 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.