Low power digital media broadcast receiver with time division

• US 8,675,532 B2
• Filed: 07/26/2011
• Issued: 03/18/2014
• Est. Priority Date: 03/24/2005
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Sharma, Sridhar G., Arad, Oren
• Primary Examiner(s): Lee, Andrew
• Application Number:
  US13/191,222
• Publication Number:
  US 20120020267A1
• Time in Patent Office: 966 Days
• Field of Search: 370/311, 370/314, 370/321, 370/328, 370/337, 370/347
• US Class Current: 370/311
• CPC Class Codes: H04H 20/42 Arrangements for resource management
• CPC Class Codes: H04H 20/426 Receiver side
• CPC Class Codes: H04H 20/72 of terrestrial networks
• CPC Class Codes: H04H 2201/20 digital audio broadcasting [DAB]
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Systems and methods for providing a low power receiver device using fine grained time division are provided. In one embodiment, the receiver device comprises a tuner, a demodulator configured to demodulate at least one sampled signal, a payload processor configured to process at least one demodulated signal into an output format, and a time division control logic configured to generate a control signal to switch at least one component within the receiver device between modes to conserve power. The at least one component may be switched between an active mode, a standby mode, a power off mode, and a low power mode. In further embodiments, the at least one component may be switched between staggered modes.

Claims

1. A system for power conservation in a receiver device, comprising:

a tuner that receives a signal at the receiver device;

a demodulator that demodulates a sampled signal into a demodulated signal;

a payload processor that processes the demodulated signal into an output format; and

time division control logic stored in a memory device and executable by one or more processors to generate a control signal to switch a component within the receiver device between modes to conserve power, wherein the time division control logic is further executable to power off the component during a cyclic prefix time.

2. The system of claim 1, wherein the modes include an active mode, a standby mode, a power off mode, or a low power mode.

3. The system of claim 1, wherein the modes include a plurality of staggered modes.

4. The system of claim 1, wherein the time division control logic is further executable to determine the component for which to switch modes.

5. A method for conserving power in a receiver device, comprising:

receiving a signal at the receiver device;

demodulating a sampled signal of the received signal into a demodulated signal;

processing the demodulated signal into an output format; and

generating a control signal to switch a component within the receiver device between modes to conserve power during a cyclic prefix time.

6. The method of claim 5, wherein the modes include an active mode, a standby mode, a power off mode, or a low power mode.

7. The method of claim 5, wherein generating the control signal comprises generating a control signal that transitions the component between a plurality of staggered modes.

8. The method of claim 5 further comprising determining the component in which to switch modes.

9. The method of claim 5 further comprising determining when to wake up the component when the component is in a standby mode or power off mode.

10. A system for power conservation in a receiver device, comprising:

time division control logic stored in a memory device and executable by one or more processors to;

generate a first control signal that switches a first component within the receiver device between power modes in response to a request for a service issued by a user,

generate a second control signal that switches a second component within the receiver device between power modes, and

generate a third control signal that configures a third component to adjust a frequency of operation associated with the third component,

wherein transitions between the power modes are timed to occur non-simultaneously for the first component and the second component.

11. The system of claim 10 further comprising a payload processor that is configured to process a received signal into a transmission frame having multiple channels corresponding to services, wherein a service occupies a continuous timeslot in the transmission frame.

12. The system of claim 11, wherein the power modes include a power conservation mode that is entered during a synchronization channel in the transmission frame.

13. The system of claim 11, wherein the power modes include a power conservation mode that is activated during a sub-channel in the transmission frame that corresponds to an unrequested service.

14. The system of claim 11, wherein the power modes include a power conservation mode that is entered during a fast information channel in the transmission frame.

15. The system of claim 10, wherein a transition to an active power mode is timed to occur a programmable number of symbols prior to a symbol of interest.

16. The system of claim 15, wherein the programmable number of symbols is selected in order to allow adequate time to determine estimated channel parameters.

20. The system of claim 10, wherein the frequency of operation is adjusted based on a type of a service, number of services, or both, requested by a user.

17. A method for conserving power in a receiver device, comprising:

generating a first control signal to switch a first component within the receiver device between power modes;

generating a second control signal to switch a second component within the receiver device between power modes, wherein transitions between the power modes occur independently between the first control signal and the second control signal; and

generating a third control signal to configure a third component to adjust a frequency of operation associated with the third component.

18. The method of claim 17 further comprising:

processing a received signal into a transmission frame having multiple channels corresponding to services, wherein a service occupies a continuous timeslot in the transmission frame; and

determining a first time slot in the transmission frame corresponding to a service requested by a user, wherein the first control signal is based on the first time slot.

19. The method of claim 18 further comprising determining a second time slot in the transmission frame corresponding to a second service requested by the user, wherein the second control signal is based on the second time slot.

21. The method of claim 17, wherein the frequency of operation is adjusted based on a type of a service, number of services, or both, requested by a user.