Conditional activation and deactivation of a microprocessor

• US 9,760,146 B2
• Filed: 01/08/2007
• Issued: 09/12/2017
• Est. Priority Date: 01/08/2007
• Status: Active Grant

• Current Assignee: Nordic Semiconductor ASA
• Original Assignee: Imagination Technologies Limited (Imagination Technologies Group Ltd.)
• Inventors: Aldaz, Luis, Barman, Kaushik, Johnson, Allan A., Malladi, Raghavendra
• Primary Examiner(s): Alrobaye, Idriss N
• Assistant Examiner(s): LEWIS-TAYLOR, DAYTON A.
• Application Number:
  US11/651,272
• Publication Number:
  US 20080168189A1
• Time in Patent Office: 3,900 Days
• Field of Search: None
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: H04B 1/1615 Switching on; Switching off, e.g. remotely battery saving circuits associated with selective call operation H04W52/00; details of power consumption reduction in a PLL, H03L7/0802, H03L7/14, H03L2207/08, H03L2207/18; muting amplifiers by gain control see H03G3/34
• CPC Class Codes: H04W 52/0293 having a sub-controller with a low clock frequency switching on and off a main controller with a high clock frequency
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Conditional activation and deactivation of a microprocessor. A hardware portion of an apparatus performs packet processing on received data, where the hardware portion selectively decodes the received data. A microprocessor performs data processing on decoded data, where the microprocessor is conditionally activated for performing the data processing and is conditionally deactivated when not performing the data processing. An output portion receives processed data and audibly renders the processed data without requiring the microprocessor.

Claims

1. An apparatus comprising:

a hardware portion including a medium access control (MAC) device configured to perform packet processing on received data without requiring any processor, and a beacon process module configured to filter out non-beacon packets from received data, said beacon process module being further configured to deactivate after processing a packet and to reactivate in anticipation of receipt of a packet for processing, said hardware portion further configured to selectively decode said received data;

a microprocessor configured to perform data processing on decoded data, wherein said microprocessor is conditionally activated to perform said data processing and is conditionally deactivated when not performing said data processing; and

an output portion configured to output said processed data.

2. The apparatus of claim 1 wherein said output portion comprises:

a buffer configured to receive and buffer said processed data; and

a media output configured to access said processed data from said buffer and to audibly render said processed data.

3. The apparatus of claim 1 wherein said microprocessor is not activated to perform data processing if said decoded data is voice over wireless local area network voice data.

4. The apparatus of claim 1 wherein said microprocessor is activated when not performing said data processing if said microprocessor is executing at least one application running on said apparatus.

5. The apparatus of claim 1 wherein said microprocessor is operable to provide dynamic clock scaling such that said microprocessor performs data processing at a frequency based at least in part on data processing requirements of said decoded data.

6. The apparatus of claim 4 wherein said microprocessor is operable to provide dynamic clock scaling such that said microprocessor executes at least one said application at a frequency based at least in part on processing requirements of said application.

7. An apparatus comprising:

a hardware portion configured to perform packet processing on received data, said hardware portion further configured to selectively decode said received data, said hardware portion comprising;

a physical layer (PHY) device,

a medium access control (MAC) device communicatively coupled to said PHY device, wherein said MAC device is configured to perform real-time voice communication functions without requiring a microprocessor, and

a beacon process module configured to filter out non-beacon packets from received data, said beacon process module being further configured to deactivate after processing a packet and to reactivate in anticipation of receipt of a packet for processing,

a data processing portion configured to perform data processing on decoded data, said data processing portion comprising a microprocessor, wherein said microprocessor is conditionally activated to perform said data processing and is conditionally deactivated when not performing said data processing; and

an output portion configured to output said processed data.

8. The apparatus of claim 7 wherein said output portion comprises:

a buffer configured to receive and buffer said processed data; and

a media output configured to access said processed data from said buffer and to audibly render said processed data.

9. The apparatus of claim 7 wherein said microprocessor is not activated to perform said data processing if said decoded data is voice over wireless local area network voice data.

10. The apparatus of claim 7 wherein said microprocessor is activated when not performing said data processing if said microprocessor is executing at least one application running on said apparatus.

11. The apparatus of claim 7 wherein said microprocessor is operable to provide dynamic clock scaling such that said microprocessor performs data processing at a frequency based at least in part on data processing requirements of said decoded data.

12. The apparatus of claim 10 wherein said microprocessor is operable to provide dynamic clock scaling such that said microprocessor executes at least one said application at a frequency based at least in part on processing requirements of said application.

13. The apparatus of claim 7 wherein said hardware portion further comprises:

an activity sensor device configured to sense a packet; and

a MAC address parser configured to receive said packet, to process a header of said packet, and to activate said MAC device in response to recognizing a MAC address within said header, such that said MAC device is not activated if said MAC address parser does not recognize said MAC address.

14. A method for selectively deactivating a microprocessor, said method comprising:

performing packet processing on received data at a hardware portion of an electronic device;

selectively decoding said received data;

performing data processing on decoded data, wherein said microprocessor is conditionally activated for performing said data processing, wherein said performing packet processing comprises a medium access control (MAC) device performing real-time voice communication functions of said electronic device without requiring said microprocessor;

filtering out non-beacon packets from received data by a beacon process module configured to deactivate after processing a packet and to reactivate in anticipation of receipt of a packet for processing;

conditionally deactivating said microprocessor after performing said data processing if said microprocessor is not executing an application running on said electronic device; and

at an output portion, outputting said processed data.

15. The method as recited in claim 14 wherein said performing packet processing comprises:

decoding at least a header portion of a packet of said received data, said header portion including a destination MAC address;

determining whether said MAC address of said packet is recognized; and

responsive to recognizing said MAC address, activating said MAC device for performing packet processing functions.

16. The method as recited in claim 14 wherein outputting said processed data comprises:

buffering said processed data; and

audibly rendering said processed data at a media output.

17. The method of claim 14 further comprising dynamically scaling an operating frequency of said microprocessor such that said microprocessor operates at a frequency based at least in part on processing requirements of said decoded data.

18. The method of claim 14 further comprising dynamically scaling an operating frequency of said microprocessor such that said microprocessor operates at a frequency based at least in part on processing requirements of said application.

19. The method as recited in claim 14, wherein said selectively decoding said received data comprises:

said hardware portion conditionally activating said microprocessor when there is a packet buffered at an access point for the electronic device to retrieve.