Shock protection for electro-mechanical devices of host devices employing inertial navigation systems

• US 9,025,272 B1
• Filed: 05/05/2006
• Issued: 05/05/2015
• Est. Priority Date: 05/06/2005
• Status: Active Grant

• Current Assignee: Seagate Technology LLC (Seagate Technology Holdings Plc)
• Original Assignee: Seagate Technology LLC (Seagate Technology Holdings Plc)
• Inventors: Chang, Benjamin M.
• Primary Examiner(s): Wong, K.
• Application Number:
  US11/429,421
• Time in Patent Office: 3,287 Days
• Field of Search: None
• US Class Current: 360/75
• CPC Class Codes: G11B 21/12 Raising and lowering; Back-spacing or forward-spacing along track; Returning to starting position otherwise than during transducing operation
• CPC Class Codes: G11B 5/5582 system adaptation for working during or after external perturbation, e.g. in the presence of a mechanical oscillation caused by a shock
• CPC Class Codes: G11B 5/59694 System adaptation for working during or after external perturbation, e.g. in the presence of a mechanical oscillation caused by a shock

Abstract

A shock protected electronic device comprising a position receiver, an electromechanical device, a position process, and a protect process. The position receiver generates at least one position signal. The motion sensor generates at least one motion signal. The electromechanical device operates in a normal mode and a protect mode. The position process generates position data indicative of a position of the shock protected electronic device based on at least one of the position signal and the at least one motion signal. The protect process generates a protect signal based on the at least one motion signal. The electromechanical device enters the protect mode when the protect process generates the protect signal.

Claims

1. A shock protected electronic device comprising:

a position receiver that generates at least one position signal of the device;

a motion sensor that generates at least one motion signal;

an electromechanical device, where the electromechanical device operates in a normal mode and a protect mode;

a position data generator that receives the at least one motion signal from the motion sensor and generates position data indicative of a position of the shock protected electronic device based on the position signal and the at least one motion signal; and

a protect signal generator that generates a protect signal based on the at least one motion signal and transmits the protect signal to the electromechanical device, which enters the protect mode in response to receiving the protect signal from the protect signal generator.

2. The shock protected electronic device as recited in claim 1, further comprising a host system.

3. The shock protected electronic device as recited in claim 1, further comprising:

a location system comprising the position data generator, the position receiver, and the motion sensor; and

an electromechanical system comprising the electromechanical device and the protect signal generator.

4. The shock protected electronic device as recited in claim 1, further comprising:

a location system comprising the position data generator, the position receiver, the motion sensor, and the protect signal generator; and

an electromechanical system comprising the electromechanical device.

5. The shock protected electronic device as recited in claim 1, further comprising:

a location system comprising the position data generator, the position receiver, and the motion sensor;

a host system comprising the protect signal generator; and

an electromechanical system comprising the electromechanical device.

6. The shock protected system as recited in claim 1, further comprising first and second motion signal processing systems for processing the at least one motion signal.

7. The shock protected electronic device as recited in claim 6, in which the location system comprises the protect signal generator.

8. The shock protected electronic device as recited in claim 6, in which the electromechanical system comprises the protect signal generator.

9. The shock protected system as recited in claim 2, in which:

the electromechanical system is a hard disk drive system comprising a servo processing system and a hard disk drive processor;

the protect signal generator runs on the hard disk drive processor; and

the hard disk drive processor is in direct communication with the servo processing system.

10. The shock protected electronic device as recited in claim 1, in which the protect signal generator generates the at least one protect signal based on at least one shock event precursor profile.

11. The shock protected electronic device as recited in claim 1, further comprising a network protocol for allowing communication between the motion sensor and at least one of the protect signal generator and the position data generator.

12. The shock protected electronic device as recited in claim 11, in which the network protocol further allows communication between the protect signal generator and the electromechanical device.

13. The shock protected electronic device as recited in claim 2, in which the host system comprises at least one of a cellular telephone system, a programmable computing system, a media playback system, and a global positioning system.

14. The shock protected device as recited in claim 1, in which the motion sensor comprises an accelerometer.

15. The shock protected device as recited in claim 14, in which the accelerometer generates first, second, and third signals indicative of motion in along first, second, and third axes.

16. The shock protected device as recited in claim 1, in which the motion sensor comprises a gyroscopic sensor.

17. The shock protected device as recited in claim 1, in which the position receiver is a global positioning system receiver.

18. The shock protected electronic device as recited in claim 1, in which the electromechanical device is a hard disk drive.

19. A shock protected electronic device comprising:

a position receiver that generates at least one position signal of the device;

a motion sensor that generates at least one motion signal;

a hard disk drive system comprising a hard disk drive that operates in a read/write mode and a park mode;

a position data generator that receives the at least one motion signal from the motion sensor and generates position data indicative of a position of the shock protected electronic device based on the position signal and the at least one motion signal; and

a protect signal generator that generates a protect signal based on the at least one motion signal, wherein

the protect signal initiates a change of the hard disk drive operation mode from the read/write mode to the park mode.

20. The shock protected electronic device as recited in claim 19, further comprising a host system.

21. The shock protected electronic device as recited in claim 19, further comprising:

a location system comprising the position data generator, the position receiver, and the motion sensor;

where

the hard disk drive system further comprises the protect signal generator.

22. The shock protected electronic device as recited in claim 19, further comprising a location system comprising the position data generator, the position receiver, the motion sensor, and the protect signal generator.

23. The shock protected electronic device as recited in claim 19, further comprising:

a location system comprising the position data generator, the position receiver, and the motion sensor; and

a host system comprising the protect signal generator.

24. The shock protected system as recited in claim 19, further comprising first and second motion signal processing systems for processing the at least one motion signal.

25. The shock protected electronic device as recited in claim 24, in which the location system comprises the protect signal generator.

26. The shock protected electronic device as recited in claim 24, in which the hard disk drive system comprises the protect signal generator.

27. The shock protected system as recited in claim 19, in which:

the electromechanical system is a hard disk drive system comprising a servo processing system and a hard disk drive processor;

the protect signal generator runs on the hard disk drive processor; and

the hard disk drive processor is in direct communication with the servo processing system.

28. The shock protected electronic device as recited in claim 19, in which the protect signal generator generates the at least one protect signal based on at least one shock event precursor profile.

29. The shock protected electronic device as recited in claim 27, further comprising a network protocol for allowing communication between the motion sensor and at least one of the position data generator and the protect signal generator.

30. The shock protected electronic device as recited in claim 29, in which the network protocol further allows communication between the protect signal generator and at least one of the position data generator and the electromechanical device.

31. The shock protected electronic device as recited in claim 19, in which the host system comprises at least one of a cellular telephone system, a programmable computing system, a media playback system, and a global positioning system.

32. The shock protected electronic device as recited in claim 19, in which the hard disk drive system further comprises:

a servo processing system; and

a hard disk controller in communication with the host processor;

where

the protect signal generator directly sends the protect signal to the servo processing system, bypassing the hard disk controller, to place the hard disk drive in the park mode.

33. The shock protected electronic device as recited in claim 19, in which the hard disk drive system further comprises:

a servo processing system;

a hard disk controller in communication with the host processor; and

a hard disk drive processor in communication with the hard disk controller and the servo processing system;

where

the hard disk drive processor comprises the protect signal generator, and

the hard disk drive processor directly sends the protect signal to the servo processing system to place the hard disk drive in the park mode.

34. The shock protected device as recited in claim 19, in which the motion sensor comprises an accelerometer.

35. The shock protected device as recited in claim 34, in which the accelerometer generates first, second, and third signals indicative of motion in along first, second, and third axes.

36. The shock protected device as recited in claim 19, in which the motion sensor comprises a gyroscopic sensor.

37. A shock protected device as recited in claim 19, in which the position receiver is a global positioning system receiver.

38. A method of shock protecting an electronic device comprising an electromechanical device, a position receiver, a motion sensor, and a position process, the method comprising the steps of:

generating position data based on a position signal of the device generated by the position receiver and at least one motion signal generated by the motion sensor;

generating, by a protect process executed by a processor, a protect signal based on the at least one motion signal generated by the motion sensor; and

transmitting the protect signal to the electromechanical device, which enters the protect mode in response to receiving the protect signal.

39. The method as recited in claim 38, further comprising the steps of:

providing a host system; and

transferring data between the host system and the electromechanical device.

40. The method as recited in claim 38, further comprising the steps of:

forming a location system comprising the position process, the position receiver, and the motion sensor; and

forming an electromechanical system comprising the electromechanical device, where the electromechanical system further comprises the protect process.

41. The method as recited in claim 38, further comprising the step of forming a location system comprising the position process, the position receiver, and the motion sensor, where the location system further comprises the protect process.

42. The method as recited in claim 38, further comprising the steps of:

forming a location system comprising the position process, the position receiver, and the motion sensor; and

providing a host system comprising the protect process.

43. The method as recited in claim 38, further comprising the step of providing a host system comprising at least one of a cellular telephone system, a programmable computing system, a media playback system, and a global positioning system.

44. An electronic device comprising:

a position receiver that generates at least one position signal of the device based on information received from a positioning system that is at a location that is remote from the electronic device;

a motion sensor that generates a motion signal;

a position data generator that receives the motion signal from the motion sensor and determines a position of the electronic device; and

a protect signal generator that receives the motion signal from the same motion sensor and generates a protect signal.

45. The electronic device of claim 44 wherein the protect signal is communicated to an electromechanical device, which enters a protect mode in response to receiving the protect signal.

46. The electronic device of claim 45 wherein the position data generator and the protect signal generator are external to the electromechanical device.

47. The electronic device of claim 45 wherein the protect signal generator is a part of the electromechanical device.

48. The electronic device of claim 45 wherein the electromechanical device is a part of the electronic device.

49. The electronic device of claim 45 wherein the motion sensor is external to the electromechanical device.