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公开(公告)号：DE3844874C2
公开(公告)日：1995-03-09
申请号：DE3844874
申请日：1988-09-01
Applicant: CANON KK
Inventor： YAMADA KUNIHIKO , FUJIWARA AKIHIRO , TOYAMA MASAMICHI , SUDA HIROFUMI , KANEDA KITAHIRO , YOSHIMURA KATSUJI
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公开(公告)号：GB2258967A
公开(公告)日：1993-02-24
申请号：GB9223270
申请日：1992-11-06
Applicant: CANON KK
Inventor： YOSHIMURA KATSUJI , TOYAMA MASAMICHI , FUJIWARA AKIHIRO , SUDA HIROFUMI , YAMADA KUNIHIKO , KANEDA KITAHIRO , HOMMA HIDEO
Abstract: An image sensing apparatus operating with adaptive selection of a first tracing algorithm in which an object image is traced by moving a detecting area capable of being movably set on an image sensing plane in such a manner that the luminance level difference between the inside and the outside of that area becomes maximum and a second tracing algorithm in which the object image is traced by moving the position of the detecting area in such a manner that a point at which a contrast becomes maximum comes to coincide with a central portion of the detecting are depending on the state of the image sensing plane. The threshold values for changing over between the first tracing algorithm and the second tracing algorithm are made to have a hysteresis characteristic.
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公开(公告)号：DE3416072A1
公开(公告)日：1984-11-29
申请号：DE3416072
申请日：1984-04-30
Applicant: CANON KK
Inventor： FUJIWARA AKIHIRO , AMIKURA TAKASHI , TOYAMA MASAMICHI
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公开(公告)号：DE2731667A1
公开(公告)日：1978-01-19
申请号：DE2731667
申请日：1977-07-13
Applicant: CANON KK
Inventor： IWAMA HIDETO , TOYAMA MASAMICHI , SHIMAZAKI MAMORU , MACHIDA TOKIO , ICHIYANAGI TOSHIKAZU
Abstract: In the disclosed motion picture system a shutter drive control circuit renders it possible to operate a rotary shutter in various exposure control modes including a mode in which rotation of the shutter is stopped for each long exposure of motion picture frame, the system can defer release of the shutter to the exposure aperture closed position pending completion of a picture frame exposure in any of the modes. The system terminates the preceding manual actuation of a shutter trigger when the taking of the particular picture frame is in progress.
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公开(公告)号：DE69031407D1
公开(公告)日：1997-10-16
申请号：DE69031407
申请日：1990-06-08
Applicant: CANON KK
Inventor： TOYAMA MASAMICHI , FUJIWARA AKIHIRO , SUDA HIROFUMI , YAMADA KUNIHIKO , HIRASAWA MASAHIDE , KANEDA KITAHIRO
Abstract: An automatic focus adjustment system comprises a focusing device which varies an image forming position; and a control circuit which is capable of setting first and second focusing modes. In the first focusing mode, the control circuit causes the focusing device to move to an in-focus point within its morning area. In the second focusing mode, the control circuit causes the focusing device to move to an in-focus point on the nearest focusing distance side. The control circuit is arranged to divide a moving range of the focusing device into a first area and a second area which is set on the nearest focusing distance side of the first area to make the focusing device movable within the first area in the first focusing mode, and to make it movable within both the first and second areas in the second focusing mode.
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Patent Agency Ranking
公开(公告)号：DE68928126D1
公开(公告)日：1997-07-17
申请号：DE68928126
申请日：1989-03-08
Applicant: CANON KK
Inventor： SEKINE MASAYOSHI , NAKAJIMA TOSHIYUKI , KAI TAKASHI , YOSHIMURA KATSUJI , TOYAMA MASAMICHI
Abstract: An image shake detecting device for detecting a shake of an image on an image sensing plane on the basis of a video signal output from an image sensor includes detection circuits arranged to detect image displacement in a plurality of areas set on the image sensing plane, and a control microcomputer which makes a discrimination, on the basis of information output from these detection circuits, between a movement of a camera and a solo movement of a photographed object. The device thus accurately makes compensation for an image shake by judging the state of the image on the basis of information output from these detection circuits. The image shake detecting device further includes a computing circuit arranged to compute a quantity of an image shake on the basis of a difference in detecting timing of a feature point of the image and a sensitivity control circuit arranged to change the detection sensitivity of the shake detection circuits. Further disclosed is an object tracing device to which the invented image shake detecting device is applied.
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公开(公告)号：DE68921840D1
公开(公告)日：1995-04-27
申请号：DE68921840
申请日：1989-10-26
Applicant: CANON KK
Inventor： SEKINE MASAYOSHI , TOYAMA MASAMICHI
Abstract: In an image sensing an processing device, a movement vector of an image is detected in each of detection blocks formed by dividing an image sensing plane, and a distributed state of the image movement within the image sensing plane is detected by statistically processing the movement vector detected in each of the detection blocks. On the basis of the distributed state of the image movement, an area having an image of a main photographed object is detected so as to set a focus detecting area on the image sensing plane or to control a focusing circuit.
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公开(公告)号：DE3830794C2
公开(公告)日：1994-08-11
申请号：DE3830794
申请日：1988-09-09
Applicant: CANON KK
Inventor： SUDA HIROFUMI , TOYAMA MASAMICHI , FUJIWARA AKIHIRO , YAMADA KUNIHIKO
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公开(公告)号：DE3310601C2
公开(公告)日：1994-02-10
申请号：DE3310601
申请日：1983-03-23
Applicant: CANON KK
Inventor： TOYAMA MASAMICHI , KANEDA NAOYA , FUJIBAYASHI KAZUO
Abstract: In the disclosed distance measuring device a focal point of an optical system is detected by measuring a distance to an object to be measured with light projecting and receiving means according to the principle of the trigonometric distance measuring method. The device is of the type having light projecting means, light receiving means and the optical axis of the optical system arranged on different planes. Projection of a light flux by the light projecting means is effected within a first plane which contains the optical axis of the optical system and the light projecting means and the reflection of the light from the light flux in projecting means is received within a second plane which contains the optical axis of the optical system and the light receiving means, so that the distance to the object can be always accurately measured on the optical axis of the optical system without any parallax.
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公开(公告)号：GB2258967B
公开(公告)日：1993-05-12
申请号：GB9223270
申请日：1992-11-06
Applicant: CANON KK
Inventor： YOSHIMURA KATSUJI , TOYAMA MASAMICHI , FUJIWARA AKIHIRO , SUDA HIROFUMI , YAMADA KUNIHIKO , KANEDA KITAHIRO , HOMMA HIDEO
Abstract: An image sensing apparatus operating with adaptive selection of a first tracing algorithm in which an object image is traced by moving a detecting area capable of being movably set on an image sensing plane in such a manner that the luminance level difference between the inside and the outside of that area becomes maximum and a second tracing algorithm in which the object image is traced by moving the position of the detecting area in such a manner that a point at which a contrast becomes maximum comes to coincide with a central portion of the detecting are depending on the state of the image sensing plane. The threshold values for changing over between the first tracing algorithm and the second tracing algorithm are made to have a hysteresis characteristic.
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