Multiple Anti-Shake System and Method Thereof

• US 20120141101A1
• Filed: 04/25/2011
• Published: 06/07/2012
• Est. Priority Date: 12/01/2010
• Status: Active Grant

• Current Assignee: Altek Corporation
• Original Assignee: Altek Corporation
• Inventors: Cheng, Yu-Ming, Li, Yun-Chin, Yang, Chin-Lung, Kang, Yu-Kai
• Granted Patent: US 8,433,185 B2
• Time in Patent Office: Days
• US Class Current: 396/55
• CPC Class Codes: G03B 2205/0007 Movement of one or more optical elements for control of motion blur
• CPC Class Codes: G03B 2207/005 involving control of motion blur
• CPC Class Codes: G03B 2217/005 Blur detection
• CPC Class Codes: H04N 1/00307 with a mobile telephone apparatus constructional features of portable telephone sets H04M1/0202; mobile radio systems H04W84/00
• CPC Class Codes: H04N 23/6812 based on additional sensors, e.g. acceleration sensors
• CPC Class Codes: H04N 23/6845 by combination of a plurality of images sequentially taken
• CPC Class Codes: H04N 23/687 by shifting the lens or sensor position

Abstract

A multiple anti-shake system and a method thereof applied to a camera device. The system comprises a sensing module, a first anti-shake module and a second anti-shake module. The sensing module detects the vibration signal of the camera device and the first anti-shake module is actuated to perform a first vibration compensation according to the vibration signal, therefrom calculates a residual vibration amount according to said first vibration compensation. The second anti-shake module thereby further performs a second vibration compensation to determine the set parameter of multi-frame blending. Thereby, the user can obtain a clear image by immediately processing a blurred image through a compensation process.

Claims

1. A multiple anti-shake system applied to a camera device, comprising:

a sensing module detecting a vibration signal of the camera device;

a first anti-shake module performing a first vibration compensation according to the vibration signal and calculating a residual vibration amount according to the first vibration compensation; and

a second anti-shake module performing a second vibration compensation according to the residual vibration amount and determining a set parameter of multi-frame blending.

2. The multiple anti-shake system as defined in claim 1, wherein the sensing module is a position sensor or an angular velocity sensor, and the vibration signal includes angular variation data or position variation data.

3. The multiple anti-shake system as defined in claim 1, wherein the first anti-shake module performs the first vibration compensation by moving lenses or photo-sensitive components of the camera device according to the vibration signal.

4. The multiple anti-shake system as defined in claim 1, wherein the residual vibration amount is a vibration amount that is not compensated in the first vibration compensation.

5. The multiple anti-shake system as defined in claim 4, wherein the second anti-shake module performs the second vibration compensation according to the residual vibration amount.

6. The multiple anti-shake system as defined in claim 1, wherein the set parameter includes an exposure time or a blending image amount.

7. A multiple anti-shake method applied to a camera device comprising the steps of:

detecting a vibration signal of the camera device with a sensing module;

performing a first vibration compensation with a first anti-shake module according to the vibration signal;

calculating a residual vibration amount with the first anti-shake module according to the first vibration compensation; and

performing a second vibration compensation with a second anti-shake module according to the residual vibration amount to determine a set parameter of multi-frame blending.

8. The multiple anti-shake method as defined in claim 7, wherein the residual vibration amount is a vibration amount that is not compensated in the first vibration compensation, and the second anti-shake module performs the second vibration compensation according to the residual vibration amount.

9. The multiple anti-shake method as defined in claim 8, wherein the set parameter includes an exposure time or a blending image amount.

10. A multiple anti-shake system applied to a camera device, comprising:

a sensing module detecting a vibration signal of the camera device;

an anti-shake module performing a vibration compensation according to the vibration signal and calculating a residual vibration amount according to the vibration compensation; and

a multi-frame blending module performing a multi-frame blending according to the residual vibration amount.

11. The multiple anti-shake system as defined in claim 10, wherein the multi-frame blending module further determines a set parameter of multi-frame blending.

12. The multiple anti-shake system as defined in claim 11, wherein the set parameter includes an exposure time or a blending image amount.

13. The multiple anti-shake system as defined in claim 10, wherein the anti-shake module is a optical type anti-shake module.

14. The multiple anti-shake system as defined in claim 10, wherein the vibration compensation is a mechanical type vibration compensation.

15. The multiple anti-shake system as defined in claim 10, wherein the residual vibration amount is a vibration amount that is not compensated in the vibration compensation.