System and a method for transmitting and receiving a program with improved efficiency

• US 8,091,112 B1
• Filed: 02/28/2001
• Issued: 01/03/2012
• Est. Priority Date: 02/28/2001
• Status: Expired due to Fees

• Current Assignee: KEEN Personal Technologies Incorporated, Keen Personal Media, Inc. (Western Digital Corporation)
• Original Assignee: KEEN Personal Technologies Incorporated, Keen Personal Media, Inc. (Western Digital Corporation)
• Inventors: Elliott, Timothy J., Price, William P.
• Primary Examiner(s): Huynh, Son P
• Application Number:
  US09/796,921
• Time in Patent Office: 3,961 Days
• Field of Search: 725/67, 725/68, 725/71, 725/135, 725 87-104, 725115-116, 725145-146
• US Class Current: 725/135
• CPC Class Codes: H04H 20/40 Arrangements for broadcast specially adapted for accumulation-type receivers
• CPC Class Codes: H04H 20/423 Transmitter side
• CPC Class Codes: H04H 60/07 characterised by processes or methods for the generation
• CPC Class Codes: H04N 21/2668 Creating a channel for a dedicated end-user group, e.g. insertion of targeted commercials based on end-user profiles information retrieval from the Internet by querying with filtering and personalisation G06F16/9535; arrangements for replacing or switching information during the broadcast H04H20/10; push services over packet-switching network H04L12/1859; adaptation of message content in packet-switching networks H04L51/063
• CPC Class Codes: H04N 21/4334 Recording operations recording of a television signal H04N5/76; arrangements for recording or accumulating broadcast information or broadcast-related information H04H60/27
• CPC Class Codes: H04N 21/8456 by decomposing the content in the time domain, e.g. in time segments

Abstract

A method of transmitting programs from a source of programs to a user location divides a program into a plurality of program streams, wherein each program stream represents a temporal segment of the program. The method adds identification data to the plurality of program streams and multiplexes the plurality of program streams comprising the identification data into a transport stream. The transport stream is transmitted to a user location. The program represented by the plurality of program streams is transmitted in a reduced amount of time. The amount of time decreases with the number of program streams used.

Claims

1. A method of transmitting video programs from a source of video programs to a user location in a transport stream having a predetermined bandwidth and a predetermined constant data rate, the method comprising:

dividing a video program into a plurality of program streams to be transmitted on an unused portion of the bandwidth, each program stream representing a temporal segment of the video program, each temporal segment having a predetermined duration which is dynamically allocated depending on the unused portion of the bandwidth;

adding identification data to the plurality of program streams, wherein the identification data is based on a temporal relationship of the plurality of program streams;

multiplexing the plurality of program streams comprising the identification data into the unused portion of the bandwidth of the transport stream; and

transmitting the transport stream to a user location, the video program being transmitted at the data rate in an amount of time which is less than an amount of time for transmitting the video program at the data rate as a single program stream.

2. The method of claim 1, wherein the video program further includes at least one of audio content and data content.

3. The method of claim 1, further comprising multiplexing at least one additional program stream of at least one additional video program into the transport stream.

4. The method of claim 1, further comprising storing the plurality of program streams at the user location and repeatedly playing back the plurality of program streams into a decoder for presenting the video program to the user.

5. The method of claim 4, further comprising individually storing the plurality of program streams.

6. The method of claim 5, further comprising sequentially retrieving the plurality of program streams in accordance with the identification data for presenting the video program to the user.

7. The method of claim 1, further comprising extracting the plurality of program streams from the transport stream at the user location to provide for reassembly of the video program in accordance with the identification data.

8. The method of claim 1, wherein the identification data includes a program association table and a program map table that describe the program streams.

9. The method of claim 8, wherein the identification data further includes a conditional access table that enables a user to subscribe to a conditional access service.

10. The method of claim 1, further comprising compressing the video program prior to dividing the video program into the plurality of program streams.

11. A system for transmitting a video program, comprising:

a segmentizer configured to divide a video program into a plurality of program streams, each program stream representing a temporal segment of the video program, each temporal segment having a predetermined duration which is dynamically allocated depending on an unused bandwidth portion of a transport stream having a predetermined bandwidth and a predetermined constant data rate, said segmentizer further configured to add identification data to the plurality of program streams, wherein the identification data is indicative of a temporal relationship of the plurality of program streams;

a multiplexer configured to multiplex the plurality of program streams comprising the identification data into the unused bandwidth portion of the transport stream; and

a transmitter configured to transmit the transport stream to a user location, the video program being transmitted at the data rate in an amount of time which is less than an amount of time for transmitting the video program at the data rate as a single program stream.

12. The system of claim 11, wherein the video program further includes at least one of audio content and data content.

13. The system of claim 11, wherein the identification data includes a program association table and a program map table that describe the program streams.

14. The method of claim 13, wherein the identification data further includes a conditional access table that enables a user to subscribe to a conditional access service.

15. The system of claim 11, wherein the multiplexer multiplexes at least one additional program stream of at least one additional video program into the transport stream.

16. The system of claim 11, further comprising a storage management system configured to process the transport stream at the user location to provide for reassembly of the video program in accordance with the identification data.

17. The system of claim 16, further comprising a storage device for storing the plurality of program streams, wherein the storage management system controls the storage device.

18. The system of claim 16, wherein the storage management system controls retrieving the plurality of program streams in accordance with the identification data for presenting the video program to the user.

19. The system of claim 16, wherein the storage management system provides for storing of the plurality of program streams and for repeated playing back of the plurality of program streams into a decoder for presenting the video program to the user.

20. A method of reconstructing a video program, comprising:

receiving a transmitted transport stream having a predetermined bandwidth and a predetermined data rate, wherein the transport stream includes a plurality of program streams defining a video program which has been multiplexed into the transport stream so as to reduce an amount of time for transmitting the video program at the data rate from an amount of time for transmitting the video program at the data rate as a single program stream, each program stream representing a temporal segment of the video program, each temporal segment having a predetermined duration which is dynamically allocated depending on an unused portion of the bandwidth, wherein the plurality of program streams includes identification data that is based on a temporal relationship of the plurality of program streams; and

processing the transport stream for reassembly of the video program in accordance with the identification data.

21. The method of claim 20, further comprising storing the plurality of program streams at the user location and repeatedly playing back the plurality of program streams into a decoder for presenting the video program to the user.

22. The method of claim 20, further comprising extracting the plurality of program streams from the transport stream and storing the plurality of program streams.

23. The method of claim 20, wherein the identification data includes a program association table and a program map table that describe the program streams.

24. The method of claim 23, wherein the identification data further includes a conditional access table that enables a user to subscribe to a conditional access service.

25. A system for reconstructing a video program at a user location, comprising:

a receiver configured to receive a transmitted transport stream having a predetermined bandwidth and a predetermined constant data rate, the transport stream including a plurality of multiplexed program streams defining a video program so as to reduce an amount of time for transmitting the video program at the data rate from an amount of time for transmitting the video program at the data rate as a single program stream, wherein each program stream represents a temporal segment of the video program, each temporal segment having a predetermined duration which is dynamically allocated depending on an unused portion of the bandwidth, and wherein the plurality of program streams includes identification data that is indicative of a temporal relationship of the plurality of program streams;

a storage management system coupled to the receiver and configured to process the transport stream to provide for reassembly of the video program in accordance with the identification data;

a storage device coupled to the storage management system, the storage device configured to store at least the plurality of program streams; and

a decoder coupled to the storage management system and configured to process the plurality of program streams for presenting the video program to the user.

26. The system of claim 25, wherein the storage management system controls retrieval of the plurality of program streams from the storage device.

27. The system of claim 26, wherein the storage management system is configured to repeatedly play back the plurality of program streams into the decoder for presenting the video program to the user.

28. The system of claim 25, wherein the identification data includes a program association table and a program map table that describe the program streams.

29. The system of claim 28, wherein the identification data further includes a conditional access table that enables a user to subscribe to a conditional access service.