Granted Patent B2

US 8,325,077 · App. 11/574,238 · Granted Dec 4, 2012

Abstract

Claims (27)

1. A method of distributing multimedia content to at least one client device, comprising:

slicing the multimedia content into a set of slices;

coding a slice according to an asynchronous layer coding technique such that N coded symbols including K source symbols and N−K error symbols are generated;

transmitting said coded slices upon request of the client device;

receiving said coded slices on a client device;

decoding a coded slice on said client device as soon as K coded symbols of said slice have been received;

wherein the multimedia content is under a compressed format; and

wherein the multimedia content is compressed at a bit rate R and wherein the coded slices are transmitted at a bit rate N/K*R.

2. A method as claimed in any one of claim 1 , wherein the step of slicing is adapted to divide the compressed multimedia content into a set of slices which can be decompressed independently.

3. A method as claimed in claim 1 , wherein the coded slices are transmitted over different channels and wherein said method further comprises the step of buffering decoded slices on the client device.

4. A system for distributing multimedia content to at least one client device over a network, comprising:

a slicer for slicing the multimedia content into a set of slices;

a coder for coding a slice according to an asynchronous layer coding technique such that N coded symbols including K source symbols and N−K error symbols are generated;

a content server for storing and transmitting said coded slices upon request of the client device;

a client device comprising means for receiving said coded slices and a decoder for decoding a coded slice as soon as K coded symbols of said slice have been received;

wherein the multimedia content is under a compressed format; and

wherein the multimedia content is compressed at a bit rate R and wherein the coded slices are transmitted at a bit rate N/K*R.

5. A client device for downloading multimedia content from a content server, said multimedia content being sliced into a set of slices, a slice being further coded according to an asynchronous layer coding technique such that N coded symbols including K source symbols and N−K error symbols are generated, said device comprising:

means for receiving said coded slices; and

a decoder for decoding a coded slice as soon as K coded symbols of said slice have been received;

wherein the multimedia content is under a compressed format; and

wherein the multimedia content is compressed at a bit rate R and wherein the coded slices are transmitted at a bit rate N/K*R.

6. A device for processing multimedia content, comprising:

a slicer for slicing the multimedia content into a set of slices;

an ALC coder for coding a slice according to an asynchronous layer coding technique such that N coded symbols including K source symbols and N−K error symbols are generated and transmitted over a network;

wherein the multimedia content is under a compressed format; and

wherein the multimedia content is compressed at a bit rate R and wherein the coded slices are transmitted at a bit rate N/K*R.

Assignments (14)