Method and system of enabling trick play modes using HTTP GET

• US 20060037057A1
• Filed: 05/24/2004
• Published: 02/16/2006
• Est. Priority Date: 05/24/2004
• Status: Abandoned Application

• Current Assignee: Sharp Laboratories of America Incorporated (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Laboratories of America Incorporated (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Xu, Shugong
• Application Number:
  US10/852,932
• Publication Number:
  US 20060037057A1
• Time in Patent Office: Days
• US Class Current: 725/90
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/613 for the control of the source by the destination control signals issued by the client directed to the server or network components specially adapted for selective content distribution H04N21/637
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04N 21/6587 Control parameters, e.g. trick play commands, viewpoint selection
• CPC Class Codes: H04N 21/8455 involving pointers to the content, e.g. pointers to the I-frames of the video stream

Abstract

A method of providing operational commands to a AV program transmitted using HTTP protocol includes storing an AV program in a server; generating meta data in the server, wherein the meta data includes a mapping table associating time ranges for the AV program to byte ranges for the AV program; transmitting the meta data and mapping table to a client/player associated with the server; generating and transmitting a HTTP GET command from the client/player to the server as a function of a desired operational command; and selecting appropriate I-frames in the server and transmitting the I-frames to the client/player in response to the HTTP GET command.

Claims

1. A method of providing operational commands to a AV program transmitted using HTTP protocol, comprising:

storing an AV program in a server;

generating meta data in the server, wherein the meta data includes a mapping table associating time ranges for the AV program to byte ranges for the AV program;

transmitting the meta data and mapping table to a client/player associated with the server;

generating and transmitting a HTTP GET command from the client/player to the server as a function of a desired operational command; and

selecting appropriate I-frames in the server and transmitting the I-frames to the client/player in response to the HTTP GET command.

2. The method of claim 1 where said generating meta data in the server includes generating a meta file and a mapping table which relates relative time of the AV program to a files access point and data-block size.

3. The method of claim 2 wherein said generating and transmitting a HTTP GET command includes transmitting a file access point and data-block size information.

4. The method of claim 1 which includes storing the generated meta data in the server.

5. The method of claim 1 which includes not storing the generated meta data in the server.

9. The system of claim 5 which includes storage facilities for the meta data in the server.

6. A system for providing operational commands to a AV program transmitted using HTTP protocol, comprising:

an AV program stored in a server;

meta data generated by the server, including a mapping table associating time ranges for the AV program to byte ranges for the AV program;

a client/player associated with the server, which receives the meta data and the mapping table;

a HTTP GET command generated by the client/player and sent to the server as a function of a desired operational command; and

selection means in the server for selecting appropriate I-frames in the server, which I-frames are sent to the client/player in response to the HTTP GET command.

7. The system of claim 6 where said mapping table relates relative time of the AV program to a files access point and data-block size.

8. The system of claim 7 herein said HTTP GET command includes a file access point and data-block size information.

10. A method of providing operational commands to a AV program transmitted using HTTP protocol, comprising:

storing an AV program in a server;

generating a data packet in the server, wherein the data packet includes a mapping table associating time ranges for the AV program to byte ranges for the AV program;

transmitting the data packet and mapping table to a client/player associated with the server;

generating and transmitting a HTTP GET command from the client/player to the server as a function of a desired operational command; and

selecting appropriate I-frames in the server and transmitting the I-frames to the client/player in response to the HTTP GET command.

11. The method of claim 10 where said generating a data packet in the server includes generating a meta file and a mapping table which relates relative time of the AV program to a files access point and data-block size.

12. The method of claim 11 wherein said generating and transmitting a HTTP GET command includes transmitting a file access point and data-block size information.

13. The method of claim 10 which includes storing the generated data packet in the server.

14. The method of claim 10 which includes not storing the generated data packet in the server.