Digital transactions for the delivery of media files

Details Digital transactions for the delivery of media files Digital transactions for the delivery of media files

2006-06-13

2006-06-13

Dinh, Khanh Quang (Department: 2151)

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

C709S224000, C709S226000, C707S793000, C707S793000

Reexamination Certificate

active

07061482

ABSTRACT:
An incomplete/partly corrupted media file is delivered ‘in the clear’; in addition, a delta file is delivered to users meeting access control criteria which, when combined with the incomplete/partly corrupted parts allows a complete and uncorrupted version of the media file to be re-constructed. The method allows, in one implementation, a secure music purchase system to operate over digital radio: for example, the start of a song when played over the radio is usually deliberately talked over and the end cut short to prevent listeners being able to record a complete copy. With the present system, this practice can continue, but listeners can also purchase the missing or corrupted sections to enable them to possess a complete and uncorrupted version for playback.

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