Method for controlling digital photographing apparatus and digital photographing apparatus adopting the method

• US 20070248348A1
• Filed: 06/21/2007
• Published: 10/25/2007
• Est. Priority Date: 07/03/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Techwin Corporation (Hanwha Corporation)
• Inventors: Lee, Seung-bong, Nam, Nyun-woo
• Granted Patent: US 7,822,328 B2
• Time in Patent Office: Days
• US Class Current: 396/213
• CPC Class Codes: G03B 2217/005 Blur detection
• CPC Class Codes: G03B 7/24 automatically in accordance with markings or other means indicating film speed or kind of film on the magazine to be inserted in the camera
• CPC Class Codes: H04N 2101/00 Still video cameras
• CPC Class Codes: H04N 23/68 for stable pick-up of the scene, e.g. compensating for camera body vibrations
• CPC Class Codes: H04N 23/6812 based on additional sensors, e.g. acceleration sensors
• CPC Class Codes: H04N 23/687 by shifting the lens or sensor position
• CPC Class Codes: H04N 23/689 Motion occurring during a rolling shutter mode
• CPC Class Codes: H04N 23/73 by influencing the exposure time
• CPC Class Codes: H04N 23/75 by influencing optical camera components

Abstract

A method for controlling a digital photographing apparatus and an apparatus adopting the method, which include obtaining first information of a subject at a time t₁ at a first sensitivity, obtaining second information of the subject at a time t₂ that is different from time t₁ at a second sensitivity, and obtaining an image of the subject using the first information and the second information, wherein at least one of the obtaining of the first information and the obtaining of the second information is performed in a state in which a position where an image of the subject is formed on a photographing element of the photographing apparatus is maintained constant despite shaking of the photographing apparatus.

Claims

1. A method for controlling a digital photographing apparatus, the method comprising:

obtaining first information of a subject for a first duration at a first sensitivity;

obtaining second information of the subject for a second duration at a second sensitivity that is different from the first sensitivity;

compensating for shaking of the digital photographing apparatus during at least one of the first duration and the second duration; and

obtaining an image of the subject from the first information and the second information,

wherein the obtaining of the first information and the obtaining of the second information is performed at the same aperture value, and at least one of the first sensitivity, the second sensitivity, and a shutter speed that is the sum of the first duration and the second duration is set by a user prior to a photographing operation.

2. The method of claim 1, wherein the first sensitivity is greater than the second sensitivity.

3. The method of claim 2, wherein the first information is edge information of the subject, and the second information is color and/or bright information of the subject.

4. The method of claim 2, wherein the second sensitivity is set by a user prior to the photographing and the first sensitivity is automatically set considering the brightness of the subject.

5. The method of claim 1, wherein the second sensitivity is higher than the first sensitivity.

6. The method of claim 5, wherein the first information is color and/or brightness information of the subject, and the second information is edge information of the subject.

7. The method of claim 5, wherein the first sensitivity is set by a user prior to the photographing and the second sensitivity is automatically set considering the brightness of the subject.

8. The method of claim 1, wherein the shutter speed is set by a user prior to the photographing and the first duration is automatically set considering the brightness of the subject.

9. The method of claim 1, wherein the compensating step is performed during the first duration.

10. The method of claim 1, wherein the compensating step is performed during the second duration.

11. The method of claim 1, wherein the compensating step is performed during both the first duration and the second duration.

12. The method of claim 1, wherein the compensating step is to constantly maintain the position where an image of the subject is formed on a photographing element included in the photographing apparatus in spite of the shaking of the photographing apparatus, by changing a relative position of the photographing element with respect to a case of the photographing apparatus.

13. The method of claim 12, wherein the relative position change of the photographing element with respect to the case is performed in a direction opposite to a movement of the case of the photographing apparatus due to the shaking.

14. The method of claim 1, wherein the compensating step is to constantly maintain the position where an image of the subject is formed on a photographing element included in the photographing apparatus in spite of the shaking of the photographing apparatus, by changing an optical path of light from the subject toward the photographing element by changing a relative position of a lens included in the photographing apparatus with respect to a case of the photographing apparatus.

15. A digital photographing apparatus comprising:

a photographing element that receives a light reflected from a subject and converts the light to image data; and

a CPU that communicates with the photographing element,

wherein the CPU controls the photographing element to obtain first information of a subject for a first duration at a first sensitivity, obtain second information of the subject for a second duration at a second sensitivity that is different from the first sensitivity, compensate for shaking of the digital photographing apparatus during at least one of the first duration and the second duration, and obtain an image of the subject from the first information and the second information, and

the obtaining of the first information and the obtaining of the second information is performed at the same aperture value, and at least one of the first sensitivity, the second sensitivity, and a shutter speed that is the sum of the first duration and the second duration is set by a user prior to a photographing operation.

16. The apparatus of claim 15, wherein the first sensitivity is greater than the second sensitivity.

17. The apparatus of claim 16, wherein the first information is edge information of the subject, and the second information is color and/or bright information of the subject.

18. The apparatus of claim 16, wherein the second sensitivity is set by a user prior to the photographing and the first sensitivity is automatically set considering the brightness of the subject.

19. The apparatus of claim 15, wherein the second sensitivity is greater than the first sensitivity.

20. The apparatus of claim 19, wherein the first information is color and/or bright information of the subject and the second information is edge information of the subject.

21. The apparatus of claim 19, wherein the first sensitivity is set by a user prior to the photographing and the second sensitivity is automatically set considering the brightness of the subject.

22. The apparatus of claim 15, wherein the shutter speed is set by a user prior to the photographing and the first duration is automatically set considering the brightness of the subject.

23. The apparatus of claim 15, wherein the obtaining of the first information is performed in a state in which the position where an image of the subject is formed on the photographing element is maintained constant in spite of the shaking of the photographing apparatus

24. The apparatus of claim 15, wherein the obtaining of the second information is performed in a state in which the position where an image of the subject is formed on the photographing element is maintained constant in spite of the shaking of the photographing apparatus

25. The apparatus of claim 15, wherein both of the obtaining of the first information and the obtaining of the second information are performed in a state in which the position where an image of the subject is formed on the photographing element included in the photographing apparatus is maintained constant in spite of the shaking of the photographing apparatus

26. The apparatus of claim 15 further comprising a shake correction module, the shake correction module constantly maintaining the position where an image of the subject is formed on the photographing element in spite of the shaking of the photographing apparatus to compensate for shaking of the digital photographing apparatus in communication with the CPU, by changing a relative position of the photographing element with respect to a case of the photographing apparatus.

27. The apparatus of claim 26, wherein the relative position change of the photographing element with respect to the case of the photographing apparatus is performed in a direction opposite to a movement of the case of the photographing apparatus due to the shaking.

28. The apparatus of claim 15 further comprising a shake correction module, the shake correction module constantly maintaining the position where an image of the subject is formed on the photographing element in spite of the shaking of the photographing apparatus to compensate for shaking of the digital photographing apparatus in communication with the CPU, by changing an optical path of light from the subject toward the photographing element by changing a relative position of a lens included in the photographing apparatus with respect to a case of the photographing apparatus.