Electronic apparatus and electronic apparatus control method

• US 7,930,081 B2
• Filed: 10/23/2006
• Issued: 04/19/2011
• Est. Priority Date: 10/26/2005
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Kinouchi, Takashi
• Primary Examiner(s): Tran; Khoi
• Assistant Examiner(s): Kim; Kyung J
• Application Number:
  US11/584,674
• Publication Number:
  US 20070110407A1
• Time in Patent Office: 1,639 Days
• Field of Search: 386/125, 701/45, 711/122
• US Class Current: 701/45
• CPC Class Codes: G11B 19/04 Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
• CPC Class Codes: G11B 19/20 Driving; Starting; Stopping; Control thereof
• 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

Abstract

An electronic apparatus includes: a recording unit configured to access a recording medium using a head; an acceleration sensor that detects acceleration generated in the electronic apparatus; and a control unit configured to write, in the recording medium or a predetermined memory, detection data indicating a result of the detection by the acceleration sensor or a state of the electronic apparatus detected on the basis of the detection result and retracting, when the detection result satisfies a drop condition for the electronic apparatus defined in advance, the head of the recording unit to a predetermined retraction position.

Claims

1. An electronic apparatus, comprising:

a recording unit configured to access a recording medium using a head;

an acceleration sensor that detects acceleration generated in the electronic apparatus; and

a control unit configured to write, in the recording medium or a predetermined memory, detection data indicating a result of the detection by the acceleration sensor or a state of the electronic apparatus detected on the basis of the detection result only after the detection result satisfies a drop condition for the electronic apparatus defined in advance and retract the head of the recording unit to a predetermined retraction position.

2. An electronic apparatus according to claim 1, further comprising:

a timer, wherein the control unit writes the detection data in the recording medium or the predetermined memory in association with a count value of the timer at a time when the detection data is generated.

3. An electronic apparatus according to claim 1, wherein the control unit writes, on the basis of the detection result of the acceleration sensor, the detection data in the recording medium or the predetermined memory when acceleration associated with a state that causes failure of the electronic apparatus is generated in the electronic apparatus.

4. An electronic apparatus according to claim 3, wherein the control unit writes, on the basis of the detection result of the acceleration sensor, the detection data in the recording medium or the predetermined memory when the acceleration generated in the electronic apparatus exceeds a predetermined level.

5. An electronic apparatus according to claim 4, wherein

the acceleration sensor detects accelerations in three axial directions, and

the control unit writes the detection data in the recording medium or the predetermined memory when at least acceleration in one axial direction among the accelerations in the three axial directions detected by the acceleration sensor exceeds the predetermined level.

6. An electronic apparatus according to claim 4, wherein the control unit lowers, when the head is accessing the recording medium in the recording unit, the predetermined level compared with that at a time when the head is not accessing the recording medium.

7. An electronic apparatus according to claim 1, further comprising:

a temperature sensor, wherein the control unit writes, in the recording medium or the predetermined memory, data indicating a detection result of the temperature sensor or a state of the electronic apparatus specified on the basis of the detection result of the temperature sensor.

15. An electronic apparatus according to claim 1, wherein the control unit does not write the detection data unless the drop condition is satisfied.

16. An electronic apparatus according to claim 1, wherein

the detection data includes acceleration data for a predetermined period, and

the control unit only stores maximum acceleration data from the acceleration data.

17. An electronic apparatus according to claim 1, wherein the control unit stores the detection data for a plurality of drop conditions.

18. An electronic apparatus according to claim 1, further comprising:

a display, and the control unit outputs the detection data for the plurality of drop conditions on the display.

8. An electronic apparatus control method for controlling a portable electronic apparatus including recording means for accessing a recording medium using a head and an acceleration sensor that detects acceleration, the electronic apparatus control method comprising:

generating detection data indicating a result of the detection by the acceleration sensor or a state of the electronic apparatus detected on the basis of the detection result;

writing the detection data generated by the generating detection data in the recording medium or a predetermined memory only after the detection result satisfies a drop condition for the electronic apparatus; and

retracting the head of the recording means to a predetermined retraction position.

9. An electronic apparatus control method according to claim 8, wherein

the electronic apparatus further includes a timer, and

the writing the detection data in the recording medium or the predetermined memory includes writing the detection data in the recording medium or the predetermined memory in association with a count value of the timer at a time when the detection data is generated.

10. An electronic apparatus control method according to claim 8, wherein, in the electronic apparatus, the writing the detection data in the recording medium or the predetermined memory includes writing, on the basis of the detection result of the acceleration sensor, the detection data in the recording medium or the predetermined memory when acceleration associated with a state that causes failure of the electronic apparatus is generated in the electronic apparatus.

11. An electronic apparatus control method according to claim 10, wherein, in the electronic apparatus, on the basis of the detection result of the acceleration sensor, the detection data is written in the recording medium or the predetermined memory when the acceleration generated in the electronic apparatus exceeds a predetermined level.

12. An electronic apparatus control method according to claim 11, wherein

the acceleration sensor detects accelerations in three axial directions, and

the retracting the head of the recording means includes writing the detection data in the recording medium or the predetermined memory when at least acceleration in one axial direction among the accelerations in the three axial directions detected by the acceleration sensor exceeds the predetermined level.

13. An electronic apparatus control method according to claim 11, further comprising:

lowering, when the head is accessing the recording medium in the recording means, the predetermined level compared with that at a time when the head is not accessing the recording medium.

14. An electronic apparatus control method according to claim 8, further comprising:

detecting a temperature of the electronic apparatus via a temperature sensor, and

the writing the detection data in the recording medium or the predetermined memory includes writing data indicating a detection result of the temperature sensor or a state of the electronic apparatus specified on the basis of the detection result in the recording medium or the predetermined memory of the temperature sensor.

19. An electronic apparatus control method according to claim 8, wherein the writing the detection data includes writing acceleration data for a predetermined period and storing only maximum acceleration data from the acceleration data.

20. An electronic apparatus control method according to claim 8, further comprising:

displaying on a display the detection data for a plurality of drop conditions.