Collaborative transcoding

• US 8,688,665 B2
• Filed: 10/03/2008
• Issued: 04/01/2014
• Est. Priority Date: 10/03/2008
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola Mobility LLC (Lenovo Group Ltd.)
• Inventors: Tirpak, Thomas M., Sparrell, Carlton J.
• Primary Examiner(s): Vy, Hung T
• Application Number:
  US12/245,235
• Publication Number:
  US 20100088292A1
• Time in Patent Office: 2,006 Days
• Field of Search: 707/705, 707/999.107, 725/132, 709/224, 709/246, 709/223, 709/204, 709/225, 709/226
• US Class Current: 707/705
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04L 65/756 adapting media to device capabilities
• CPC Class Codes: H04L 65/765 intermediate

Abstract

A method of collaborative transcoding includes discovering capabilities of devices within a network; exchanging information about content stored within the network; anticipating a request for a content item in a target format; identifying a location of the content item by referencing the information about content stored within the network; and, if the content item is not in the target format, selecting a the device within the network to transcode the content into the target format. A system for collaborative transcoding includes a network, the network comprising a first networked device and at least one other networked device, the first networked device receiving a request for a content item in a target format; a shared content history; the shared content history comprising a list of content available on the network, the first networked device searching the shared content history to determine if another networked device can provide the content item; a capability list comprising a native format and transcoding capabilities of the networked devices, the first networked device searching the capability list to determine if any the networked device is configured to transcode the content item from a source format to a target format.

Claims

1. A method of collaborative transcoding comprising:

in a first peer device, discovering transcoding capabilities of a plurality of peer devices within a network, wherein the network is a peer-to-peer network interconnecting the plurality of peer devices and the first peer device within said network;

in the first peer device, exchanging information with other peer devices of the plurality of peer devices, the information identifying content stored within said network in the other peer devices;

in the first peer device, storing information about the transcoding abilities and the information about content;

in the first peer device, anticipating a request by a user of the first peer device for a content item in a target format;

in the first peer device, identifying a location of said content item within said network by referencing said stored information about content;

if said location is not in the first peer device, obtaining said content item from the location and storing said content item in the first peer device;

if said content item is not in said target format;

in the first peer device, selecting, based on the stored information about transcoding abilities, a second peer device within said network to receive said content item and transcode said content item into said target format;

receiving, in the first peer device, said content item from the location;

sending said content item from the first peer device to the second peer device;

receiving, in the first peer device, a transcoded copy of the content item from the second peer device in said target format.

2. The method of claim 1, wherein said discovering transcoding capabilities of said plurality of peer devices within the network comprises communication of native format and transcoding capabilities for each of said plurality of peer devices.

3. The method of claim 2, further comprising discriminating between said plurality of devices configured to transcode from a first format to a second format based on a transcoding score assigned to each of said plurality of peer devices.

4. The method of claim 3, further comprising, in said first peer device, using said transcoding score to select a peer device within said network to transcode said content item from a source format to said target format.

5. The method of claim 3, wherein said transcoding score comprises at least one of:

an efficiency score and a quality score.

6. The method of claim 3, further comprising dynamically altering said efficiency score according to a current capacity of said peer device to transcode content from said first format to said second format.

7. The method of claim 1, further comprising generating a shared content history at said first peer device, by exchanging information among said first peer device and said plurality of peer devices within said network.

8. The method of claim 7, further comprising generating said shared content history by exchanging information identifying content transcoded and content served in said plurality of peer devices.

9. The method of claim 1, further comprising receiving, at the first peer device, said anticipated request and playing back said content item in response to said request.

10. The method of claim 1, wherein said anticipating a request comprises:

monitoring a shared content history to determine a trend of content usage; and

comparing said trend of content usage to a threshold.

11. The method of claim 10, further comprising:

predicting when a future demand for content among said plurality of peer devices will occur; and

evaluating available processor and memory capacity to determine if excess capacity exists to prepare for said future demand.

12. The method of claim 1, wherein identifying said location of said content item comprises searching a shared content history to identify said location of said content item.

13. The method of claim 1, further comprising:

in the first peer device, determining whether said first peer device can deliver said content item in said target format without assistance from said other peer devices within said network; and

responsively to said determining, if said first peer device cannot deliver said content item in said target format without assistance from said other peer devices, then searching a shared content history stored in the first peer device to find said second peer device to assist said first peer device in delivering said content item.

14. The method of claim 13, wherein said second peer device assists said first peer device by at least one of:

providing said first peer device with said content item and transcoding said content item.

15. The method of claim 13, further comprising querying said other peer devices within said network to determine if said other peer devices are aware of any outside peer devices that can provide said content item.

16. A system for collaborative transcoding comprising:

a first networked peer device configured to be communicatively coupled to a network, said network interconnecting said first peer device with a plurality of networked peer devices, wherein said plurality of networked peer devices comprises the first networked peer device and at least one other networked peer device, said first networked peer device receiving a request for a content item in a target format, wherein the network is a peer-to-peer network;

a shared content history stored within said first networked peer device;

said shared content history comprising a list of content available on said plurality of networked peer devices within said network, said first networked peer device searching said shared content history to determine if another networked peer device can provide said content item;

a capability list comprising a native format and transcoding capabilities of said plurality of networked peer devices, said first networked peer device searching said capability list to determine if any said networked peer device is configured to transcode said content item from a source format to a target format.

17. The system of claim 16, wherein said capability list is created prior to said request for content.

18. The system of claim 16, wherein said shared content history is updated through a background dialogue between said first networked peer device and a second networked peer device.

19. The system of claim 16, said capability list comprising an efficiency score rating a transcoding capability of a said networked device.

20. A computer program product for collaborative transcoding, the computer program product comprising:

a non-transitory computer usable medium having computer usable program code embodied therewith, the computer usable program code comprising;

computer usable program code configured to create an ongoing layered dialogue between devices in a peer-to-peer networked environment, wherein the devices are peer devices within the peer-to-peer networked environment, said ongoing layered dialogue comprising communication of content transcoded, content served, transcoding capabilities, transcoding scores, requests for transcoding, and requests for content, wherein transcoding score comprises an efficiency score and a quality score;

computer usable program code configured to configured to search information communicated in said ongoing layered dialogue to discover at least one of;

a location where a requested content item is stored, said devices configured to transcode a said requested content item, and a said device with a highest transcoding score for a desired transcoding operation; and

computer usable program code configured to make a request for said device with a highest transcoding score to make said desired transcoding operation.