Low power digital media broadcast receiver with time division
View Patent ↗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.
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.
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.
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.
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.