SYSTEM AND METHOD FOR COMPENSATING OFFSET OF A SOLID-STATE IMAGING DEVICE

• US 20080259171A1
• Filed: 11/15/2007
• Published: 10/23/2008
• Est. Priority Date: 04/23/2007
• Status: Abandoned Application

• Current Assignee: Asia Optical Company Incorporated
• Original Assignee: Asia Optical Company Incorporated
• Inventors: Chiang, Chih-Yang, Kao, Te-Tean
• Application Number:
  US11/940,465
• Publication Number:
  US 20080259171A1
• Time in Patent Office: Days
• US Class Current: 348/208.7
• CPC Class Codes: H04N 23/68 for stable pick-up of the scene, e.g. compensating for camera body vibrations
• CPC Class Codes: H04N 23/687 by shifting the lens or sensor position

Abstract

A method for compensating an offset of a solid-state imaging device includes obtaining a detection signal representing the offset of the solid-state imaging device disposed on a stage, generating a corresponding control voltage and control signal according to the detection signal; generating a corresponding regulation voltage according to the control voltage, generating a corresponding driving voltage according to the regulation voltage, outputting a driving signal according to the driving voltage and the control signal, and generating a magnetic force according to the driving signal to move the stage.

Claims

1. A system for compensating offset of a solid-state imaging device of a photoing device and compensating the offset of the solid-state imaging device disposed on a stage by regulating the stage, comprising:

a detection device, detecting the offset of the photoing device while operating to generate a corresponding detection signal;

a micro-control device, generating a corresponding control voltage and control signal according to the detection signal;

a voltage regulating circuit, generating a corresponding regulation voltage according to the control voltage;

a voltage regulating device, generating a corresponding driving voltage according to the regulation voltage;

an electric machinery driving device, driven by the driving voltage and controlled by the control signal from the micro-control device to output a driving signal; and

a magnetic energy device, receiving the driving signal to generate a magnetic force to move the stage.

2. The system for compensating offset of a solid-state imaging device as claimed in claim 1, further comprising a position detection device, detecting position variations of the stage to output a corresponding position detection signal to the micro-control device for operations.

3. The system for compensating offset of a solid-state imaging device as claimed in claim 2, wherein the position detection device further comprises:

a first position sensor, detecting offset along the X axis of the stage; and

a second position sensor, detecting offset along the Y axis of the stage.

4. The system for compensating offset of a solid-state imaging device as claimed in claim 3, wherein the first and second position sensors are Hall Effect sensors.

5. The system for compensating offset of a solid-state imaging device as claimed in claim 2, wherein the micro-control device processes the position detection signal and controls the electric machinery driving device to drive the magnetic energy device.

6. The system for compensating offset of a solid-state imaging device as claimed in claim 1, wherein the detection device further comprises:

a first sensor, detecting offset along the X axis of the photoing device; and

a second sensor, detecting offset along the Y axis of the photoing device

7. The system for compensating offset of a solid-state imaging device as claimed in claim 6, wherein the first and second sensors are tilting signal sensors.

8. The system for compensating offset of a solid-state imaging device as claimed in claim 7, wherein the tilting signal sensors are gyro sensors.

9. The system for compensating offset of a solid-state imaging device as claimed in claim 1, wherein the micro-control device further comprises an analog to digital conversion circuit, converting the detection signal to a digital signal.

10. The system for compensating offset of a solid-state imaging device as claimed in claim 9, wherein the micro-control device further comprises a digital to analog conversion circuit, converting the digital signal to the control voltage.

11. The system for compensating offset of a solid-state imaging device as claimed in claim 1, wherein the voltage regulating circuit further comprises a bipolar junction transistor, generating the regulation voltage according to the control voltage.

12. The system for compensating offset of a solid-state imaging device as claimed in claim 1, wherein the electric machinery driving device is a motor driver.

13. The system for compensating offset of a solid-state imaging device as claimed in claim 1, wherein the magnetic energy device further comprises:

a first magnetic energy component, regulating the stage along the X axis; and

a second magnetic energy component, regulating the stage along the Y axis.

14. The system for compensating offset of a solid-state imaging device as claimed in claim 13, wherein each of the first and second magnetic energy components comprises an inductance coil and a magnet respectively.

15. The system for compensating offset of a solid-state imaging device as claimed in claim 1, wherein the solid-state imaging device is a charge coupled device.

16. A method for compensating offset of a solid-state imaging device, compensating the offset of the solid-state imaging device disposed on a stage by regulating the stage, comprising:

obtaining a detection signal representing offset of the photoing device while operating;

generating a corresponding control voltage and first control signal according to the detection signal;

generating a corresponding regulation voltage according to the control voltage;

generating a corresponding driving voltage according to the regulation voltage;

outputting a first driving signal according to the driving voltage and the first control signal; and

generating a first magnetic force according to the first driving signal to move the stage.

17. The method for compensating offset of a solid-state imaging device as claimed in claim 16, further comprising:

determining whether position variation of the stage corresponds to the offset of the photoing device;

if the position variation does not correspond to the offset, obtaining a position detection signal representing the position variation of the stage;

generating a second control signal according to the position detection signal;

outputting a second driving signal according to the driving voltage and the second control signal; and

generating a second magnetic force according to the second driving signal to move the stage.

18. The method for compensating offset of a solid-state imaging device as claimed in claim 16, further comprising:

converting the detection signal to a digital signal; and

converting the digital signal to the control voltage.

19. The method for compensating offset of a solid-state imaging device as claimed in claim 16, wherein the detection signal comprises X and Y axial offset data of the photoing device.

20. The method for compensating offset of a solid-state imaging device as claimed in claim 16, further comprising regulating the stage along the X and Y axes according to the magnetic forces generated based on the driving signals.