Systems and methods of flexible power management applicable to digital broadcasting

• US 20060104348A1
• Filed: 05/27/2005
• Published: 05/18/2006
• Est. Priority Date: 11/15/2004
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Chen, Fang-Chu, Chen, Ching-Yung, Feng, Chih-Chun, Fang, Ce-Min
• Granted Patent: US 7,809,064 B2
• Time in Patent Office: Days
• US Class Current: 375/240.10
• CPC Class Codes: H04H 40/18 Arrangements characterised by circuits or components specially adapted for receiving

Abstract

A system for receiving a digital broadcast includes an input terminal that receives the digital broadcast containing scalable data, and a controller for controlling an operation mode of the system. In addition, the system may also include a processor that decodes the data, and a power management device that varies the amount of data to be decoded according to the operation mode.

Claims

1. A system for receiving a digital broadcast, the system comprising:

an input terminal that receives the digital broadcast containing scalable data;

a controller for controlling an operation mode of the system;

a processor that decodes the data; and

a power management device that varies the amount of data to be decoded according to the operation mode.

2. The system of claim 1, wherein the power management device is that varies the amount of data to be received by the input terminal.

3. The system of claim 1, wherein the system is a handheld device operable with a battery power.

4. The system of claim 1, wherein the scalable data comprises data coded with a fine grain scalability coding.

5. The system of claim 1, wherein the operation mode is selected based on at least one of a total battery capacity, a remaining battery capacity, a user'"'"'s instructions, and a quality of service selected.

6. The system of claim 1, wherein varying the amount of the data to be decoded comprises activating the processor at least during the intervals when the most significant portion of the scalable data is to be processed.

7. The system of claim 1, wherein varying the amount of the data to be decoded comprises deactivating the processor at least during the intervals when the least significant portion of the scalable data is present.

8. The system of claim 1, wherein the digital broadcast comprises multiple bandwidth channels each having at least two services.

9. A digital broadcasting system comprising:

a signal source that provides digital data containing at least one of audio data and video data; and

a data processing device that partitions the digital data into at least two sections of partitioned data having different significance.

10. The system of claim 9, further comprising:

a channel coding device that encodes at least a first broadcast service and a second broadcast service and places the encoded data of the first and second broadcast services at distinct time intervals.

11. The system of claim 9, wherein the digital data comprises the encoded data.

12. The system of claim 9, wherein the data processing device partitions the digital data at least via a scalable coding or a fine grain scalability coding.

13. The system of claim 9, wherein the data processing device partitions the digital data at least via encoding partitioned data with at least two coding rates according to the significance of the encoded data.

14. The system of claim 9, wherein the digital data comprises multiple bitstreams for multiple frames and each bitstream is independently modulated and partitioned to form the partitioned data.

15. The system of claim 9, further comprising a reordering device for reordering the partitioned data to consolidate symbols of same or similar significance from different bitstream frames.

16. The system of claim 9, wherein partitioning the digital data and reordering the partitioned data occur at a physical layer processing of the digital data or before the physical layer processing of the digital data.

17. A power management method for a receiving system of a digital broadcast, the method comprising:

providing the digital broadcast containing scalable data;

selecting an operation mode of the system; and

varying the amount of data to be processed by the receiving system according to the operation mode selected.

18. The method of claim 17, wherein the receiving system comprises a handheld device operable with a battery power.

19. The method of claim 17, wherein the scalable data comprises data coded with a fine grain scalability coding.

20. The method of claim 17, wherein the operation mode is selected based on at least one of a battery capacity, a remaining battery capacity, a user'"'"'s instructions, and a quality of service selected.

21. The method of claim 17, wherein varying the amount of data to be processed comprises activating a processing at the receiving system at least during the intervals corresponding to the most significant portion of the scalable data.

22. The method of claim 17, wherein varying the amount of data to be processed comprises deactivating a processing at the receiving system at least during the intervals corresponding to the least significant portion of the scalable data.

23. The method of claim 17, wherein the digital broadcast comprises multiple bandwidth channels each having at least two services.

24. The method of claim 23, wherein varying the amount of data to be processed comprises activating a processing at the receiving system at least during the intervals corresponding to the most significant portion of each frame belonging to a service selected.

25. The method of claim 23, wherein the data of the at least two services are placed at distinct time intervals.

26. The method of claim 23, wherein varying the amount of data to be processed comprises deactivating a processing at the receiving system at least during the intervals corresponding to a non-selected service.

27. A digital broadcasting method comprising:

providing data containing at least a first broadcast service and a second broadcast service;

encoding the first broadcast service and the second broadcast service;

placing a sequence of the encoded first service and a sequence of the encoded second service at distinct time intervals; and

partitioning the sequence of the encoded first service into at least two sections of partitioned data according to the significance of the encoded data of the encoded first service.

28. The method of claim 27, wherein partitioning the sequence of the encoded first service comprises a scalable coding.

29. The method of claim 27, wherein partitioning the sequence of the encoded first service comprises at least one of a scalable coding and a fine grain scalability coding.

30. The method of claim 27, wherein partitioning the sequence of the encoded first service comprises encoding partitioned data with at least two coding rates according to the significance of the encoded data.

31. The method of claim 27, wherein the digital data of the first broadcast service comprises multiple bitstreams for multiple frames and each bitstream is independently modulated and partitioned to form the partitioned data.

32. The method of claim 27, further comprising reordering the partitioned data to combine at least two symbols of same or similar significance from at least two bitstream frames.

33. The method of claim 27, wherein partitioning the digital data and reordering the partitioned data occur at a physical-layer processing of the data.

34. The method of claim 27, wherein partitioning the digital data and reordering the partitioned data occur before a physical-layer processing of the digital data.