Method and system for reducing power consumption of IrDA enabled handsets by turning on/off an IrDA port dynamically

• US 20060034611A1
• Filed: 08/26/2004
• Published: 02/16/2006
• Est. Priority Date: 08/16/2004
• Status: Abandoned Application

• Current Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Original Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Inventors: Li, Weidong
• Application Number:
  US10/926,621
• Publication Number:
  US 20060034611A1
• Time in Patent Office: Days
• US Class Current: 398/135
• CPC Class Codes: G06F 1/3215 Monitoring of peripheral devices
• CPC Class Codes: H04B 10/1143 Bidirectional transmission

Abstract

Certain aspects of reducing power consumption of IrDA enabled devices by dynamically turning ON/OFF an IrDA port may comprise receiving a first signal, which indicates that IrDA data is received. In response to receiving the IrDA data, a second signal such as an interrupt signal may be generated and sent to a processor. The second signal may cause the processor to wakeup from a power saving mode or state. The processor may receive a connection request and in response to the received connection request, the processor may generate and send a connection response to the IrDA enabled device. If it is determined that the IrDA enabled device has received the connection response, then an IrDA connection may be established between the processor and the IrDA enable device.

Claims

1. A method for reducing power consumption of IrDA enabled devices, the method comprising:

receiving a first signal indicating received IrDA data; and

generating a second signal in response to receiving said first signal, that causes a processor to wakeup from a low power state.

2. The method according to claim 1, further comprising receiving said IrDA data by said processor when said processor wakes up from said low power state.

3. The method according to claim 1, further comprising processing said IrDA data by said processor when said processor wakes up from said low power state.

4. The method according to claim 1, wherein said second signal is an interrupt signal.

5. The method according to claim 1, further comprising:

receiving a connection request; and

establishing an IrDA connection between said processor and the IrDA enabled device.

6. The method according to claim 5, wherein said connection request is a serial infra red (SIR) connect request.

7. The method according to claim 5, further comprising generating a SIR connect response in response to said connection request.

8. The method according to claim 7, further comprising determining whether said SIR connect response is received.

9. The method according to claim 8, further comprising establishing an IrDA connection if said SIR connect response is received.

10. The method according to claim 9, further comprising waiting for said IrDA data to stop.

11. The method according to claim 10, further comprising starting a first counter.

12. The method according to claim 11, further comprising determining whether said IrDA data is received.

13. The method according to claim 12, further comprising resetting said first counter if said IrDA data is received.

14. The method according to claim 13, further comprising determining whether said first counter has reached a threshold value.

15. The method according to claim 14, further comprising enabling said processor to enter a power saving mode if said first counter has reached said threshold value.

16. The method according to claim 8, further comprising incrementing a second counter if said SIR connect response is not received.

17. The method according to claim 16, further comprising determining whether a maximum count value is reached for said second counter.

18. The method according to claim 17, further comprising generating a timeout if said maximum count value is reached.

19. The method according to claim 17, further comprising sending another SIR connect request if said maximum count value is not reached.

20. A system for reducing power consumption of IrDA enabled devices, the system comprising:

circuitry that receives a first signal indicating received IrDA data; and

circuitry that generates a second signal in response to receiving said first signal, said second signal causes a processor to wakeup from a low power state.

21. The system according to claim 20, further comprising circuitry that causes said IrDA data to be received by said processor when said processor wakes up from said low power state.

22. The system according to claim 20, wherein said processor processes said IrDA data when said processor wakes up from said low power state.

23. The system according to claim 20, wherein said second signal is an interrupt signal.

24. The system according to claim 20, further comprising:

circuitry that receives a connection request; and

circuitry that establishes an IrDA connection between said processor and the IrDA enabled device.

25. The system according to claim 24, wherein said connection request is a serial infra red (SIR) connect request.

26. The system according to claim 24, further comprising circuitry that generates a SIR connect response in response to said connection request.

27. The system according to claim 26, further comprising circuitry that determines whether said SIR connect response is received.

28. The system according to claim 27, further comprising circuitry that establishes an IrDA connection if said SIR connect response is received.

29. The system according to claim 28, further comprising circuitry that waits for said IrDA data to stop.

30. The system according to claim 29, further comprising circuitry that starts a first counter.

31. The system according to claim 30, further comprising circuitry that determines whether said IrDA data is received.

32. The system according to claim 31, further comprising circuitry that resets said first counter if said IrDA data is received.

33. The system according to claim 32, further comprising circuitry that determines whether said first counter has reached a threshold value.

34. The system according to claim 33, further comprising circuitry that enables said processor to enter a power saving mode if said first counter has reached said threshold value.

35. The system according to claim 27, further comprising circuitry that increments a second counter if said SIR connect response is not received.

36. The system according to claim 35, further comprising circuitry that determines whether a maximum count value is reached for said second counter.

37. The system according to claim 36, further comprising circuitry that generates a timeout if said maximum count value is reached.

38. The system according to claim 36, further comprising circuitry that sends another SIR connect request if said maximum count value is not reached.

39. A machine-readable storage having stored thereon, a computer program having at least one code section for reducing power consumption of IrDA enabled devices, the at least one code section being executable by a machine for causing the machine to perform steps comprising:

receiving a first signal indicating received IrDA data; and

generating a second signal in response to receiving said first signal, that causes a processor to wakeup from a low power state.

40. The machine-readable storage according to claim 39, further comprising code for receiving said IrDA data by said processor when said processor wakes up from said low power state.

41. The machine-readable storage according to claim 39, further comprising code for processing said IrDA data by said processor when said processor wakes up from said low power state.

42. The machine-readable storage according to claim 39, wherein said second signal is an interrupt signal.

43. The machine-readable storage according to claim 39, further comprising:

code for receiving a connection request; and

code for establishing an IrDA connection between said processor and the IrDA enabled device.

44. The machine-readable storage according to claim 43, wherein said connection request is a serial infra red (SIR) connect request.

45. The machine-readable storage according to claim 43, further comprising code for generating a SIR connect response in response to said connection request.

46. The machine-readable storage according to claim 45, further comprising code for determining whether said SIR connect response is received.

47. The machine-readable storage according to claim 46, further comprising code for establishing an IrDA connection if said SIR connect response is received.

48. The machine-readable storage according to claim 47, further comprising waiting for said IrDA data to stop.

49. The machine-readable storage according to claim 48, further comprising code for starting a first counter.

50. The machine-readable storage according to claim 49, further comprising code for determining whether said IrDA data is received.

51. The machine-readable storage according to claim 50, further comprising code for resetting said first counter if said IrDA data is received.

52. The machine-readable storage according to claim 51, further comprising code for determining whether said first counter has reached a threshold value.

53. The machine-readable storage according to claim 52, further comprising code for enabling said processor to enter a power saving mode if said first counter has reached said threshold value.

54. The method according to claim 46, further comprising code for incrementing a second counter if said SIR connect response is not received.

55. The machine-readable storage according to claim 54, further comprising code for determining whether a maximum count value is reached for said second counter.

56. The machine-readable storage according to claim 55, further comprising code for generating a timeout if said maximum count value is reached.

57. The machine-readable storage according to claim 55, further comprising code for sending another SIR connect request if said maximum count value is not reached.