SYSTEM AND METHOD FOR DISTRIBUTING MEDIA CONTENT USING TRANSFER FILE THAT ELIMINATES NEGOTIATI0N BETWEEN SERVER AND CLIENT IN POINT-TO-MULTIPOINT DISTRIBUTION

• US 20090070414A1
• Filed: 06/24/2008
• Published: 03/12/2009
• Est. Priority Date: 03/02/2001
• Status: Abandoned Application

• Current Assignee: Kasenna, Inc. (Enghouse Systems Limited)
• Original Assignee: Kasenna, Inc. (Enghouse Systems Limited)
• Inventors: Muthukumarasamy, Jayakumar, Singal, Sanjay
• Application Number:
  US12/145,377
• Publication Number:
  US 20090070414A1
• Time in Patent Office: Days
• US Class Current: 709/203
• CPC Class Codes: G06F 16/957 Browsing optimisation, e.g. caching or content distillation
• CPC Class Codes: H04L 67/55 Push-based network services
• CPC Class Codes: H04N 21/84 Generation or processing of descriptive data, e.g. content descriptors systems specially adapted for using meta-information in broadcast systems H04H60/73
• CPC Class Codes: H04N 21/845 Structuring of content, e.g. decomposing content into time segments
• CPC Class Codes: H04N 21/85406 involving a specific file format, e.g. MP4 format

Abstract

Transfer file format, system, signal, and method for performing distribution of media content across computer networks. Transfer file and signal includes signature identifying format of file, header containing information about various parts of transfer file, asset metadata describing technical details about media content, media content that is capable of being displayed to user by client computer system using media player program, and user metadata that is capable of being displayed to user. Server is capable of connection to asset metadata database, file system, and user metadata database, and includes extractor module for retrieving asset metadata from media asset database, media content from file system, and user metadata from user metadata database, and assembling them into transfer file. Extractor module places header and signature in transfer file, and transfer file is sent across computer network to clients that parse and install parts of transfer file into local systems.

Claims

1. A server computer system for distributing media content to clients over a computer network, the server adapted for connection to an asset metadata database containing metadata describing the media content, and a file system containing the media content, the server comprising:

an extractor module that assembles a transfer file containing the media content and metadata; and

a network connection adapted for transmitting the transfer file to at least one client over the computer network.

2. The server computer of claim 1, wherein the media content is transmitted

to the clients in a point-to-multipoint manner.

4. The server computer system of claim 1, wherein the asset metadata is used by a media player program on the client to process the media content and display the media content to a user.

5. The server computer system of claim 1, wherein:

the server is adapted for connecting to a user metadata database containing user metadata that is associated with the media content and is further adapted for being displayed to a user; and

the extractor module copies the user metadata into the transfer file.

7. The server computer system of claim 1, wherein the transfer file comprises a header that includes an index file size information.

8. The server computer system of claim 1, wherein said asset metadata includes a source host name, a source asset identifier, and a value indicating a number of plays that the media asset can be played out on the client computer to reduce negotiation between the server computer and the client computer and to facilitate a point-to-point or point-to-multipoint distribution of media content.

9. A server computer system as in claim 1, wherein the transfer file assembled by the extractor module provides a file format for efficient streaming of the media content from the server computer to a plurality of clients that is adapted for point-to-point and point-to-multipoint distribution and the transfer file further includes:

a signature indicating the format of the transfer file;

a header section including information related to various portions of the transfer file, said header section including media asset type information, bit rate information describing a bit rate at which a media asset plays out on the plurality of clients, information indicating the time duration of the media content, and size information for various portions of the transfer file including an index file size information;

an asset metadata section describing media content, said asset metadata section including a source host name, a source asset identifier, and a value indicating a number of plays that the media asset can be played out on the client to reduce negotiation between the server computer and the client and to facilitate a point-to-point or point-to-multipoint distribution of media content;

media content that is capable of being displayed to a user at the at least one client; and

user metadata that describes the media content and is capable of being displayed to the user;

the transfer file format being organized to include the asset metadata section describing media asset content that is usable by a media player program on the client to eliminate time consuming negotiation between client and server and provide a more efficient transmission of media content from the server to the client, the transfer file informing each client of what client resources, including network connection bandwidth, client processing speed, and memory size that must be reserved or allocated for the incoming transfer file media asset.

10. A transfer file as in claim 9, wherein the transfer file is parsable by each of the plurality of client computers so that the client computers can identify resources required for the various parts of the transfer file without a negotiation with the server computer and allocate client computer resources required for the various parts of the transfer file.

11. A transfer file as in claim 10, wherein the signature identifies the transfer file format and permits identification by each client computer of the remaining portions of the transfer file including the header section.

12. A transfer file as in claim 11, wherein the header section identifies client computer resources including the sizes of the asset metadata, media content, and user metadata.

13. A transfer file as in claim 12, wherein transfer file header section identification of client computer resources including the sizes of the asset metadata, media content, and user metadata permits allocation of resources on each client computer as well as in an asset metadata database, in a user metadata database, and in a user file system.

3. (canceled)

6. (canceled)

14-16. -16. (canceled)

17. A client computer system for displaying media content to a user, the client

computer comprising:

a media player program for decoding and displaying media content received over a computer network to a user;

a parser module for processing a transfer file received from a server computer, the transfer file including media content and related metadata, the parser module allocating resources on the client computer system in response to processing the received transfer file;

an installer module for storing various portions of the received transfer file on the client computer system; and

a network connection for receiving the transfer file over a computer network.

18. The client computer system of claim 17, further comprising an asset metadata database, wherein the installer module stores the related metadata in the asset metadata database.

19. The client computer system of claim 17, further comprising a file system,

wherein the installer module stores the media content in the file system.

20. The client computer system of claim 17, wherein the transfer file includes:

a signature indicating the format of the transfer file;

a header section including information related to various portions of the transfer file, said header section including media asset type information, bit rate information describing a bit rate at which a media asset plays out on the plurality of clients, information indicating the time duration of the media content, and size information for various portions of the transfer file including an index file size information;

an asset metadata section describing media content, said asset metadata section including a source host name, a source asset identifier, and a value indicating a number of plays that the media asset can be played out on the client to reduce negotiation between the server computer and the client and to facilitate a point-to-point or point-to-multipoint distribution of media content;

media content that is capable of being displayed to a user at the at least one client; and

user metadata that describes the media content and is capable of being displayed to the user;

the transfer file format being organized to include the asset metadata section describing media asset content that is usable by a media player program on the client to eliminate time consuming negotiation between client and server and provide a more efficient transmission of media content from the server to the client, the transfer file informing each client of what client resources, including network connection bandwidth client processing speed, and memory size that must be reserved or allocated for the incoming transfer file media asset.

21. The client computer system of claim 17, wherein the transfer file is parsable by each of the client so that the client can identify resources required for the various parts of the transfer file without a negotiation with the server and allocate client resources required for the various parts of the transfer file.

22. The client computer system of claim 21, wherein the signature identifies the transfer file format and permits identification by each client computer of the remaining portions of the transfer file including the header section.

23. The client computer system of claim 22, wherein the header section identifies client computer resources including the sizes of the asset metadata, media content, and user metadata.

24. The client computer system of claim 23, wherein the transfer file header section identification of client computer resources including the sizes of the asset metadata, media content, and user metadata permits allocation of resources on each client computer as well as in an asset metadata database, in a user metadata database, and in a user file system.

25. (canceled)

26. A method of performing content distribution between a server computer and a client computer communicating with each other across a computer network, wherein the client computer is adapted for connection to a file system for storing media content and an asset metadata database for storing asset metadata describing the media content, the method comprising:

receiving a transfer file including a header that describes portions of the transfer file, media content and metadata describing the media content;

reading the header to determining sizes of portions of the transfer file;

allocating resources for the portions of the transfer file;

installing the metadata in the metadata database; and

installing the media content in the file system.