Patent Number: 7,827,236

Title: Digital transactions for the delivery of media files

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.

Inventors: Ferris; Gavin Robert (London, GB)

Assignee: Kenora Technology, LLC

International Classification: G06T 1/00 (20060101)

Expiration Date: 2019-11-02 0:00:00