Digital media delivery with local cache and streaming tokens

Details Digital media delivery with local cache and streaming tokens Digital media delivery with local cache and streaming tokens

2007-07-31

2007-07-31

Zand, Kambiz (Department: 2134)

Information security

Prevention of unauthorized use of data including prevention...

Access control

C726S026000, C380S228000, C380S231000, C713S193000

Reexamination Certificate

active

09750266

ABSTRACT:
A method is disclosed for enforcing the sequential playback of a multimedia file. In one aspect of the method, a sending server stores a multimedia file which is then partitioned into a plurality of sequential data blocks. The server generates a plurality of enabling tokens each corresponding to one of the plurality of sequential data blocks. The server then encodes each respective one of the pluralities of sequential data blocks with a corresponding one of the plurality of enabling tokens, producing a plurality of encoded sequential data blocks. The server then transfers the encoded sequential data blocks to a receiving client. The server also transfers the plurality of enabling tokens to the receiving client. In this manner, the server retains control over the client receiver's playback of the multimedia file.

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patent: 5719937 (1998-02-01), Warren et al.
patent: 5963909 (1999-10-01), Warren et al.
patent: 6055314 (2000-04-01), Spies et al.
The American Heritage College Dictionary, 2002, Houghton Mifflin Company, 4th edition, p. 1376.

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