CONTENT MANAGEMENT METHOD-CONTENT PLAYBACK IS CONDITIONED ON BLACKOUT TIMES LIST OR PROGRAM INTERFERENCE AVOIDANCE LIST
Original Publication Date: 2000-Nov-01
Included in the Prior Art Database: 2004-Jan-16
Sony Technical Digest
The following description features two closely related inventions. The first invention entails an enhancement to current copy protection methods that allows the content or network provider to restrict the playing of certain stored content while other designated content is being broadcast real-time. Because The Blackout Times List (1) covers a certain amount of time in the future and (2) can change frequently due to time slot alterations, the player must check the list immediately before playback in order to determine whether or not to play the stored content. If the content's tag, or combination of tags, is present in the list, then it must look at the restriction times listed. The Blackout Times List should be sent as private information in the Event Information Table (EIT) or in the Conditional Access Table (CAT). On playback, the player (set top, D TV, DVCR, or other) would need to honor the blackout time from the source of the content that was initially delivered and recorded. From the perspective of the network or service provider, content will be marked with a tag to be used for blackout purposes-the tag can be unique per content, or represent a class of content. The key descriptive feature of a class can be altered to depend on creation time, content type, and/or other parameters.