Granted Patent B2

US 8,134,941 · App. 12/066,436 · Granted Mar 13, 2012

Abstract

Claims (24)

1. A method comprising:

receiving a signal in bursts, the bursts include frames each including payload data and error correction data received in separate time periods, the bursts being separated by time intervals during which power is saved by disabling at least some signal processing components of the receiver;

wherein the signal processing components of the receiver are disabled to save power before all the error correction data for all the frames in the bursts are received.

2. A method as claimed in claim 1 , wherein the signal processing components of the receiver are disabled to save power before all the error correction data in the bursts is received and processing of at least some subsequent error correction data is omitted.

3. A method as claimed in claim 2 , wherein a Reed Solomon decoder is used in correcting errors in the received signal and the error correction data comprises a Reed Solomon table, the signal processing components of the receiver being disabled to save power before the complete Reed Solomon table for all the frames in the bursts is received.

4. A method as claimed in claim 2 , wherein signal processing components of the receiver are disabled to save power before all the error correction data in the burst is received and part of the error correction is performed in post-processing.

5. A method as claimed in claim 1 , wherein a Reed Solomon decoder is used in correcting errors in the received signal and the error correction data comprises a Reed Solomon table, the signal processing components of the receiver being disabled to save power before the complete Reed Solomon table for all the frames in the bursts is received.

6. A method as claimed in claim 1 , wherein the signal processing components of the receiver are disabled to save power before all the error correction data in the bursts is received and part of the error correction is performed in post-processing.

7. A method as claimed in claim 6 , wherein the signal processing components of the receiver are disabled to save power at a moment that is a function of time slicing packet information received in the signal.

8. A method as claimed in claim 1 , wherein the signal processing components of the receiver are disabled to save power at a variable moment during the error correction data period.

9. A method as claimed in claim 1 , wherein the received signal fulfils the requirements of the Digital Video Broadcast-Handheld standard.

10. A method as claimed in claim 9 , wherein the signal processing components of the receiver are disabled to save power when sufficient error correction data has been received to correct sections identified as unreliable by erasure information from Multi Protocol Encapsulated-Forward Error Correction frames.

11. A receiver for receiving a signal in bursts, the bursts include frames each including payload data and error correction data received in separate time periods, the bursts being separated by time intervals, the receiver comprising:

signal processing components; and

control circuit for disabling at least some of the signal processing components of the receiver during the time intervals between bursts, wherein the control circuit is arranged to disable the signal processing components of the receiver to save power before all the error correction data for all the frames in the bursts are received.

12. A receiver as claimed in claim 11 , wherein the control circuit is arranged to disable the signal processing components of the receiver to save power before all the error correction data in the bursts is received and omit processing of at least some subsequent error correction data.

13. A receiver as claimed in claim 11 , including a Reed Solomon decoder for use in correcting errors in the received signal, the error correction data comprising a Reed Solomon table, the control circuit being arranged to disable the signal processing components of the receiver to save power before the complete Reed Solomon table for all the frames in the bursts is received.

14. A receiver as claimed in claim 11 , wherein the control circuit is arranged to disable the signal processing components of the receiver to save power before all FEC data in the bursts is received and perform part of the error correction in post-processing.

15. A receiver as claimed in claim 12 , including a Reed Solomon decoder for use in correcting errors in the received signal, the error correction data comprising a Reed Solomon table, the control circuit being arranged to disable the signal processing components of the receiver to save power before the complete Reed Solomon table for all the frames in the bursts is received.

16. A receiver as claimed in claim 12 , wherein the control circuit is arranged to disable the signal processing components of the receiver to save power before all FEC data in the bursts is received and perform part of the error correction in post-processing.

17. A receiver as claimed in claim 11 , wherein the control circuit is arranged to disable the signal processing components of the receiver to save power at a variable moment during the error correction data period.

18. A receiver as claimed in claim 17 , wherein the control circuit is arranged to disable the signal processing components of the receiver to save power at a moment that is a function of time slicing packet information received in the signal.

19. A receiver as claimed in claim 11 , suitable for receiving a signal that fulfils the requirements of the Digital Video Broadcast-Handheld standard.

20. A receiver as claimed in claim 19 , wherein said control circuit is responsive to reception of sufficient error correction data for correcting sections identified by erasure information from Multi Protocol Encapsulated-Forward Error Correction frames as unreliable to disable the signal processing components of the receiver to save power.

Assignments (26)