Virtual content store in interactive services architecture

• US 8,850,474 B2
• Filed: 07/26/2010
• Issued: 09/30/2014
• Est. Priority Date: 07/26/2010
• Status: Active Grant

• Current Assignee: Synamedia Limited
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Azam, Khalid Mohammed, Sharma, Neeraj Kumar, Richardson, Gary Ward, Kiewlich, Daniel Michael, Chou, Hoi-Tauw Jozef
• Primary Examiner(s): Kumar, Pankaj
• Assistant Examiner(s): ANDRAMUNO, FRANKLIN S
• Application Number:
  US12/843,545
• Publication Number:
  US 20120023529A1
• Time in Patent Office: 1,527 Days
• US Class Current: 725/36
• CPC Class Codes: H04N 21/2221 being a cable television head-end CATV in broadcast systems H04H20/78
• CPC Class Codes: H04N 21/23113 involving housekeeping operations for stored content, e.g. prioritizing content for deletion because of storage space restrictions storage management, e.g. defragmentation G06F3/0604; snloading stored programs G06F9/445; housekeeping operations in file systems, e.g. deletion policies G06F16/10; buffering arrangements in a network node or in an end terminal in packet networks H04L49/90
• CPC Class Codes: H04N 21/2393 involving handling client requests scheduling or organising the servicing of application requests H04L67/60
• CPC Class Codes: H04N 21/47202 for requesting content on demand, e.g. video on demand

Abstract

A virtual content store may be provided. Upon receiving a request for a content stream from a subscriber at a regional headend, a central content vault may be examined to determine whether the content stream is available. Once the content stream is determined to be available in the central content vault, a streaming session may be established to the subscriber from the regional headend. The content stream may be retrieved from the central content vault and provided to the subscriber via the streaming session.

Claims

1. A method for providing a virtual content store, the method comprising:

receiving a request for a content stream at a regional headend;

determining, by the regional headend, whether the content stream is available in a local content vault at the regional headend;

determining, in response to the content stream not being available in the local content vault, by the regional headend, whether the content stream is available from a central content vault, wherein determining whether the content stream is available from the central content vault comprises determining whether the content stream is available in a content list, wherein the content list is created by an ingest driver at the central vault and distributed to each of a plurality of regional headends associated with the central vault; and

in response to determining that the content stream is not available from the central content vault, determining, by the regional headend, whether the content stream is a local interest content stream, wherein determining whether the content stream is a local stream comprises checking a list of categories of content streams that are unlikely to be requested by users associated with other regional headends;

ingesting, in response to the determination that the content stream being the local interest content stream, the content stream at the local content vault at the regional headend;

incrementing a retention counter associated with the content stream;

establishing a streaming session to a subscriber; and

providing the requested content stream to the subscriber via the streaming session.

2. The method of claim 1, wherein the streaming session is established by the regional headend.

3. The method of claim 1, wherein the regional headend comprises one of the plurality of regional headends and wherein each of the plurality of regional headends are communicatively coupled to the central content vault via a network.

4. The method of claim 3, wherein the network comprises a hybrid fibre coaxial (HFC) network.

5. The method of claim 3, further comprising:

determining whether the request for the content stream comprises a first request for the content stream; and

in response to determining that the request for the content stream comprises the first request for the content stream, creating a retention record comprising the retention counter associated with the content stream.

6. The method of claim 5, further comprising:

determining whether the streaming session has been completed; and

in response to determining that the streaming session has been completed, decrementing the retention counter of the retention record associated with the content stream.

7. The method of claim 6, further comprising:

determining whether the retention counter of the retention record associated with the content stream indicates that the content stream is not associated with an active streaming session; and

in response to determining that the counter of the retention record associated with the content stream indicates that the content stream is not associated with the active streaming session, deleting the content stream.

8. The method of claim 6, further comprising:

determining whether a license associated with the content stream has expired; and

in response to determining that the license associated with the content stream has expired, deleting the content stream.

9. The method of claim 8, further comprising:

in response to determining that the license associated with the content stream has expired, determining whether the retention counter of the retention record associated with the content stream indicates that the content stream is not associated with the active streaming session; and

in response to determining that the counter of the retention record associated with the content stream indicates that the content stream is associated with the active streaming session, retaining the content stream.

10. The method of claim 1, wherein the request for the content stream is received from at least one of the following:

the subscriber and the regional headend.

11. A system for providing a virtual content store, the system comprising:

a memory; and

a processor coupled to the memory, wherein the processor is operative to;

receive a request over a network at a regional headend for a content stream to be transmitted to a subscriber,

determine whether the content stream is available on a local vault at the regional headend,

determine, in response to the content not being available on the local vault, whether the content stream is available on a central content vault, wherein determining whether the content stream is available on the central content vault comprises determining whether the content stream is available in a content list, wherein the content list created by an ingest driver at the central vault and distributed to a plurality of regional headends,

in response to determining that the content stream is not available on the central content vault, determining, by the regional headend, whether the content stream is a local interest content stream, wherein determining whether the content stream is a local stream comprises checking a list of categories of content streams that are unlikely to be requested by users associated with other regional headends,

ingesting, in response to the determination that the content stream being the local interest content stream, the content stream at the local content vault at the regional headend,

provide the content stream to the regional headend for transmission to the subscriber via the transmission session, and

establish a deletion date for the ingested content stream according to a license agreement with the content stream provider.

12. The system of claim 11, wherein the processor is further operative to:

in response to determining that the content stream is not available on the central content vault and in response to the determination that the content stream does not comprises the local interest content stream, ingest the content stream to the central content vault.

17. The system of claim 11, wherein the processor if further operative to:

create a retention record comprising a retention counter associated with the content stream and an expiry date of the license agreement, and

increment the retention counter at initiation of the transmission session.

18. The system of claim 17, wherein the processor if further operative to:

determine whether the transmission session has been completed; and

in response to determining that the transmission session has been completed, decrementing the retention counter of the retention record associated with the content stream.

19. The system of claim 18, wherein the processor if further operative to:

determine whether the retention counter of the retention record associated with the content stream indicates that the content stream is not associated with an active streaming session; and

in response to determining that the counter of the retention record associated with the content stream indicates that the content stream is not associated with the active streaming session, deleting the content stream.

20. The system of claim 18, wherein the processor if further operative to:

determine whether the retention counter of the retention record associated with the content stream indicates that the content stream is not associated with an active streaming session; and

delete the content stream when the deletion date is reached or the viewer counter reaches the reference count, whichever occurs first.

13. A method for providing a virtual content store, the method comprising:

receiving, at a regional headend, a request for a content stream to be transmitted to a subscriber;

determining, by the regional headend, whether the content stream is available from a central content vault, wherein determining comprises determining whether the content stream is available in a content list, and wherein the content list created by an ingest driver at the central vault and distributed to a plurality of regional headends;

in response to determining that the content stream is not available from the central content vault;

determining, by the regional headend, whether the content stream is a local interest content stream, wherein determining whether the content stream is a local stream comprises checking a list of categories of content streams that are unlikely to be requested by users associated with other of the plurality of regional headends,

ingesting, in response to the determination that the content stream being the local interest content stream, the content stream at the local content vault at the regional headend,

ingesting, in response to the determination that the content stream being the local interest content stream, the content stream to a local content vault associated with the regional headend from a content provider, and

creating a retention record associated with the content stream, wherein the retention record comprises a viewer counter, a reference count, and a license expiration date;

establishing a deletion date for the content stream corresponding to the license expiration date;

incrementing the viewer counter associated with the retention record associated with the content stream;

transmitting the content stream from the local content vault to the subscriber via a streaming session established between the regional headend and the subscriber; and

deleting the content stream when the deletion date is reached or the viewer counter reaches the reference count, whichever occurs first.

14. The method of claim 13, further comprising:

determining whether the subscriber is no longer receiving the content stream; and

in response to determining that the subscriber is no longer receiving the content stream, decrementing the viewer counter associated with the retention record associated with the content stream.

15. The method of claim 13, wherein the content stream comprises a video on demand stream.

16. The method of claim 13, further comprising:

downloading a plurality of available content streams from the content provider to the central content vault on a periodic basis; and

creating the retention record associated with each of the plurality of available content streams.