[특허]Automatic focusing device

Automatic focusing device 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04N-005/238
출원번호	US-0106427 (1987-10-08)
우선권정보	JP-0239786 (1986-10-08)
발명자 / 주소	Baba Takeshi (Kanagawa JPX) Niwa Yukichi (Chiba JPX)
출원인 / 주소	Canon Kabushiki Kaisha (Tokyo JPX 03)
인용정보	피인용 횟수 : 19 인용 특허 : 5

초록 ▼

An automatic focusing device which is arranged to perform a focusing action by detecting the peak value of a high frequency component of a video signal obtained from within a focus detecting area set on the image sensing plane of an image sensor and by driving a photo taking optical system in such a way as to increase the detected peak value comprises: a peak position detecting circuit which locates a position on the image sensing plane at which the peak value of the high frequency component of the video signal is detected; and a gate control circuit which changes the position of the focus detecting area in accordance with the detected peak position which is located by the peak position detecting circuit.

대표청구항 ▼

A focus detecting device for detecting a focal point by obtaining a focus signal corresponding to a focused degree from a video signal obtained from within a focus detecting area which is set on the image sensing plane of image sensing means, comprising: (a) peak detecting means for detecting a substantial peak value of said focus signal corresponding to a focused degree obtained from within said focus detecting area; (b) position detecting means for detecting a position at which said peak value is detected within said focus detecting area on said image sensing plane; and (c) position control means for controlling the position of said focus detecting area according to the output of said position detecting means.

이 특허에 인용된 특허 (5)

Hanma Kentaro (Yokohama JPX) Murakami Toshio (Yokohama JPX), Auto-focus system for video camera.
상세보기
Kimura Kenji (Tachikawa JPX), Automatic focus control system for video camera with improved position detecting apparatus.
상세보기
Urata Shinji (Tokyo JPX), Automatic focusing device for video camera.
상세보기
Hanma Kentaro (Yokohama JPX) Yanagawa Kaoru (Katsuta JPX), Automatic focusing system for video camera.
상세보기
Kaite Osamu (Neyagawa JPX), Focus area change circuit.
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이 특허를 인용한 특허 (19)

Tsuji Akio (Akishimashi JPX) Ohmori Hideki (Yamato JPX), Automatic exposure control system for electronic camera.
상세보기
Noh Dae H. (Seoul KRX) Song Joong S. (Seoul KRX), Automatic focusing apparatus and method for video camera system by processing luminescence signal.
상세보기
Haruki Toshinobu (Shijonawate JPX) Kikuchi Kenichi (Daito JPX), Automatic focusing apparatus for automatically adjusting focus in response to video signal by fuzzy inference.
상세보기
Suda Hirofumi,JPX ; Toyama Masamichi,JPX ; Fujiwara Akihiro,JPX ; Yamada Kunihiko,JPX, Automatic focusing device.
상세보기
Yasuda Hitoshi,JPX, Camera focus control according to extraction range size and/or zoom rate.
상세보기
Homma Hideo (Tokyo JPX) Fujiwara Akihiro (Kanagawa JPX) Suda Hirofumi (Kanagawa JPX) Yamada Kunihiko (Tokyo JPX) Toyama Masamichi (Kanagawa JPX) Imai Kunio (Tokyo JPX), Exposure control device.
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Homma Hideo,JPX ; Fujiwara Akihiro,JPX ; Suda Hirofumi,JPX ; Yamada Kunihiko,JPX ; Toyama Masamichi,JPX ; Imai Kunio,JPX, Exposure control device.
상세보기
Maeda, Yukari, Film image reading device and method with focus adjustment.
상세보기
Tanaka Taeko (Yokohama JPX) Kaneda Kitahiro (Yokohama JPX), Image pickup apparatus.
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Kaneda Naoya,JPX, Image pickup apparatus effecting object image tracking responsively to object image frame movement and object image movement.
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Kaneda Kitahiro,JPX, Image pickup device with settable image detecting region.
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Kaneda Kitahiro (Kanagawa-ken JPX) Fujiwara Akihiro (Kanagawa-ken JPX) Yamada Kunihiko (Tokyo JPX) Suda Hirofumi (Kanagawa-ken JPX) Toyama Masamichi (Kanagawa-ken JPX) Arai Hideyuki (Kanagawa-ken JPX, Image sensing device having a selectable detecting area.
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Honjo, Kenichi; Miyazaki, Kyoichi; Okamoto, Mitsuyoshi, Imaging device.
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Kitahiro Kaneda JP, Movement correcting apparatus with shiftable image read-out area.
상세보기
Yoshida Shinya,JPX ; Maki Yasuhito,JPX, Peak hold method and apparatus for detecting a peak value from a plurality of input sections.
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Mabuchi, Toshiaki, Phase controlled camera system having detachable lens.
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Fullam Scott F. (Mountain View CA) Anderson Eric C. (San Jose CA), System and method for automatic engagement of a close-up lens in a fixed-focus camera.
상세보기
Shinya Yoshida JP; Yasuhito Maki JP, System for performing selective detection of image signal peaks and camera employing the system.
상세보기
Homma Hideo,JPX, Video camera apparatus having an exposure control device.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Automatic focusing device 원문보기