Digital camera having specifiable tracking focusing point
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04N-009/73
H04N-005/262
H04N-005/232
출원번호
US-0041641
(2002-01-07)
우선권정보
JP-0003698 (2001-01-11)
발명자
/ 주소
Fujii, Shinichi
Tanaka, Toshiyuki
Niikawa, Masahito
출원인 / 주소
Minolta Co., Ltd.
대리인 / 주소
Sidley Austin Brown &
인용정보
피인용 횟수 :
10인용 특허 :
12
초록▼
On a screen G1 of a liquid crystal display, a digital camera displays an AF cursor for use as a focusing point. Thus, a shooter shifts the AF cursor to the portion of a subject to be focused, so as to carry out the setting. Here, when the subject is zoomed up to an enlarged screen G2 through an opti
On a screen G1 of a liquid crystal display, a digital camera displays an AF cursor for use as a focusing point. Thus, a shooter shifts the AF cursor to the portion of a subject to be focused, so as to carry out the setting. Here, when the subject is zoomed up to an enlarged screen G2 through an optical zooming operation, the AF cursor is displayed on the enlarged screen G2, following the subject. Moreover, in the case when the subject is electronically zoomed up to an enlarged screen G3, the AF cursor is also displayed on the enlarged screen G3, following the subject. Thus, even when a zooming process is carried out, it is not necessary to adjust the position of the AF cursor; thus, it becomes possible to improve the operability of the digital camera.
대표청구항▼
1. A digital camera comprising:an image sensor for picking up an image of a subject and for generating a subject image; a display for displaying said subject image generated by said image sensor on a screen; a specifying member for specifying a specific position on said screen; a calorimetric circui
1. A digital camera comprising:an image sensor for picking up an image of a subject and for generating a subject image; a display for displaying said subject image generated by said image sensor on a screen; a specifying member for specifying a specific position on said screen; a calorimetric circuit for carrying out calorimetric calculations so as to adjust white balance of said subject image independent of said specified position specified by said specifying member; and an image-pickup controller for controlling an image-pickup operation based upon said specified position specified by said specifying member. 2. The digital camera according to claim 1, further comprising:an optical image-pickup system; wherein said image-pickup controller carries out a focusing operation of said optical image-pickup system with respect to said specified position on said screen that has been specified by said specifying member. 3. The digital camera according to claim 1, further comprising:a photometric circuit for measuring subject luminance; wherein said image-pickup controller carries out photometric calculations with respect to said specified position on said screen specified by said specifying member. 4. The digital camera according to claim 1, wherein said colorimetric circuit carries out calorimetric calculations on an entire portion of said subject image independent of said specified position specified by said specifying member.5. A digital camera according to claim 1, further comprising:an altering member for altering magnification of said subject image displayed on said display; and a first specified position controller for maintaining a relationship between said subject and said specified position independent of an alteration of magnification carried out by said altering member. 6. The digital camera according to claim 5, further comprising:an optical image-pickup system; wherein said image-pickup controller carries out a focusing operation of said optical image-pickup system with respect to said specified position on said screen that has been specified by said specifying member. 7. The digital camera according to claim 6, wherein said optical image-pickup system has a variable focal length and said altering member alters a focal length of said optical image-pickup system.8. The digital camera according to claim 6, wherein said altering member alters said magnification by displaying in an enlarged manner one portion of said subject image generated by said image sensor on said screen of said display.9. The digital camera according to claim 8 further comprising:a cursor generator for generating a cursor corresponding to said specified position specified by said specifying member, wherein said display composes said cursor and said portion of said subject image to display the resulting image on said screen. 10. The digital camera according to claim 6, further comprising:a photometric circuit for carrying out a photometric operation with respect to a photometric area based upon said specified position, wherein in the case when said specified position is located at an edge of said screen, said image-pickup controller shifts a center of said photometric area in the center direction of said screen from said specified position. 11. The digital camera according to claim 5, further comprising:a photometric circuit for measuring subject luminance; wherein said image-pickup controller carries out photometric calculations with respect to said specified position on said screen specified by said specifying member. 12. The digital camera according to claim 11, further comprising:an optical image-pickup system having a variable focal length, wherein said altering member alters a focal length of said optical image-pickup system. 13. The digital camera according to claim 11, wherein said altering member alters said magnification of said subject image by displaying in an enlarged manner one portion of said subject image generated by said image sensor on said screen of said display.14. The digital camera according to claim 5, further comprising:a second specified position controller for maintaining a relationship between said screen and said specified position independent of an alteration in said magnification by said altering member; and a selector for selecting either said first specified position controller or said second specified position controller. 15. The digital camera according to claim 14, wherein in the case when said second specified position controller is selected by said selector with said specified position being out of said screen of said display by said alteration in said magnification by said altering member, said second specified position controller shifts said specified position to a predetermined position within said screen.16. The digital camera according to claim 15, wherein said predetermined position within said screen is on an edge of said screen or in a vicinity of an edge of said screen.17. A method of operating a digital camera comprising the steps of:picking up an image of a subject; generating a subject image based on said picked up image of said subject; displaying said generated subject image on a screen; specifying a specific position on said screen; carrying out colorimetric calculations so as to adjust white balance of said subject image independent of said specified position; and controlling an image-pickup operation based upon said specified position. 18. An image taking apparatus, comprising:an image sensor for picking up an image of a subject; a display for displaying an image of a subject generated by the image sensor; an input mechanism for permitting a user to designate a position on said display; a means for changing a magnification of an image displayed on said display; a processor; and a memory for storing instructions executable by said processor, said instructions for enabling said processor to control operations of said apparatus; wherein said instructions executable by said processor include: executable instructions, responsive to a user designation of a position on said display, for displaying on said display an indication of said designated position; executable instructions, responsive to a user command, for invoking one of a first display designation magnification mode and a second display designation magnification mode; executable instructions, operable when said first display designation magnification mode is invoked, for controlling the display of a magnified image of a subject on said display and for controlling the display of an indication of said designated position so that a location of said indication on said display prior to magnification is maintained after magnification in a same location relative to said display; executable instructions, operable when said second display designation magnification mode is invoked, for controlling the display of a magnified image of a subject on said display and for controlling the display of an indication of said designated position so that a location of said indication on said display prior to magnification is maintained after magnification in a same location relative to said image of a subject; and executable instructions for controlling an image pickup operation based on said designated position. 19. An image taking apparatus in accordance with claim 18, wherein said instructions executable by said processor include:executable instructions for performing photometric operations on an image of a subject generated by the image sensor, said executable instructions for performing photometric operations being configured in a first photometric mode to perform photometric operations based on a portion of said image corresponding to said designated position on said display, said executable instructions for performing photometric operations being configured in a second photometric mode to perform photometric operations based on a portion of said image shifted away from said designated position on said display.
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이 특허에 인용된 특허 (12)
Ueno Hitoshi (Asaka JPX) Misawa Takeshi (Asaka JPX), Apparatus and method for automatic focusing in a camera system.
Mori, Katsuhiko; Matsugu, Masakazu; Mitarai, Yusuke, Image pickup apparatus for photographing desired area in image with high image quality and control method for controlling the apparatus.
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