Canon Kabushiki Kaisha

Nippon Hoso' Kyokai

Kanon Kabushiki Kaisha

Nobuhiko Shinoda

Tadashi Ito

Nobuaki Sakurada

Fumio Ito

Shinji Sakai

Hiroyashu Murakami

Masaharu Kawamura

Takao Kinoshita

Kazuya Hosoe

Yukio Mashimo

Takashi Kawabata

Hiroyasu Murakami

Soichi Nakamoto

Masayuki A Suzuki

Masayoshi Yamamichi

Masanori Uchidoi

Nozomu Kitagishi

Shigeru Yoshimura

Shohei Ohtaki

Takayuki Nemoto

Tsunenori Soma

Isamu Okada

Sigeyosi Kitahara

Shigeru Jumonji

Koji Takahashi

Takashi Kobayashi

Teruo Hieda

Akira Yamada

Kazuhiro Noguchi

Sadahiko Tsuji

Hiroyuki Hamano

Tomonori Iwashita

Yoshihiko Aihara

Kenji Kyuma

Kazuhiro Izukawa

Shigeru Ogino

Kenichi Shinbori

Etsuro Furutsu

Hirokazu Mogi

Minoru Fukuda

Shin Yamaguchi

Tadao Kusumoto

Nobuaki Sakurado

Masaharu Kamamura

Kazuyas Hosoe

Mashaharu Kawamura

An information signal processing device comprises a data holding device which is removably attachable to an information signal generating device for generating a first information signal and which holds information data corresponding to a plurality of kinds of second information signal to be combined with the first information signal and which also holds control data for controlling the combining operation, whereby the second information signal can be combined with the first information signal without special operations.

Information signal controlling system

A solid-state image sensor driving device comprises a sensing part which accumulates information by photoelectrically converting a light signal, a first storage part which reads the information from the sensing part and stores it, a second storage part which stores the information obtained from the first storage part, and a removing part which removes the information from the sensing part. The driving device is arranged to have the information intermittently removed by the removing part at least twice in one field period, to cause the first storage part to store the information obtained at the sensing part immediately before the removal by the removing part, and to cause the information stored at the first storage part to be shifted to the second storage part once in one field period.

Solid-state image sensor driving device with signal synthesizing

An image stabilization apparatus of an inertial pendulum type corrects vibration of an image by a correcting optical device relatively displaceable with respect to a barrel. The apparatus includes a restriction device for generating an operational effect which changes according to a position of the correcting optical device for restricting the relative displacement of the correcting optical device, and a controller for changing the effect of the restriction device in accordance with a focal length or a direction of displacement of the correcting optical device.

Image stabilizing apparatus

In a monolithic sensor IC, the light sensing element is formed on a base plate and a light-absorber coating such as black paint is provided on the surface of the semiconductor at positions other than the light path to the light sensing element, with the surface of the light-sensing element being provided with a reflection-prevention coating and with the entire sensor being housed within a package, the inside of the package of the IC also being provided with light-absorbing black paint.

Semi-conductor I.C. element

A lens drive device for a camera drives a lens by a motor to a position preset by an operator. The lens position is stored in a memory. When the lens is to be moved to the stored position while the lens is moved by an auto-focus device to an in-focus position, the lens is instantly moved by the motor to the stored position based on the data stored in the memory.

Lens drive device for a camera

A photographic information input device for a camera in which a correction effectiveness variable switch for controlling the effectiveness-ineffectiveness of a correction switch of photographic information is provided in a lidded recess of the camera body. When this recess is closed, the correction effectiveness variable switch is made not operable. With the lid opened, when the correction effectiveness variable switch is operated, the effective state of the correction switch is latched, later making it possible to correct the photographic information merely by operating the correction switch. Further, when the lid is closed, the correction switch is automatically changed over to the ineffective state.

Photographic information input device for camera

Most of the elements constituting this camera system consists of digital circuits, whereby a central processing unit is built in this camera system in such a manner that various kinds of photographic modes are possible without increasing the number of the elements.

Camera system

A focus detecting system has a signal processing circuit for processing output signals from photoelectric transducer elements and generating an output representing the focusing state. A circuit is provided to stabilize the output against abrupt changes in focusing condition.

Focus detecting system

An automatic imaging lens focusing device comprises a detector for detecting a near focus state, a far focus state or an in-focus state of an imaging lens to an object and producing a corresponding signal, a driver for driving the imaging lens in accordance with the signal from the detector, a lens position detector for detecting a position of the imaging lens, a memory for storing two lens positions detected by the lens position detection means in response to a store signal, a switch for producing the store signal and a control circuit for permitting the operation of the driver between the two lens positions stored in the memory while inhibiting the driver operation beyond the stored lens positions.

Automatic focusing device with range boundary setting

Disclosed is a signal accumulating time control method for a signal accumulating type radiation sensing device which produces an electrical signal corresponding to the amount of incident radiation and accumulates the same. According to the improvement of the present invention, the accumulating time is controlled by successive approximation at different intervals when there happens a situation in which the accumulating time must be changed greatly.

Signal accumulating time control method and apparatus for a signal

In a signal accumulating time control method and apparatus for a signal accumulating type radiation sensing device which produces an electrical signal corresponding to the amount of incident radiation and accumulates the same, an accumulating time controller has first and second different control modes and is adapted to change over from one of said first and second control modes to the other when the intensity of said incident radiation fluctuates a large amount.

This specification discloses an auto focus apparatus for a camera, and particularly an auto focus apparatus in which an auto focus operation is allowed only within a predetermined range relative to a preset central distance and the focusing operation by a photo-taking lens is prevented from greatly deviating from the preset central distance.

Auto focus apparatus for a camera

A focus detecting apparatus is disclosed which includes a focusing optical system for forming an object image on a predetermined focal plane and photoelectric devices disposed before and behind the focal plane at substantially equal distances from the plane. The photoelectric devices detect the focus states of the object images formed thereon respectively. The focus state of the object image on the focal plane is detected depending on whether or not the focus states on the photoelectric devices are equal to each other. According to the invention such a focus detecting apparatus further includes a mask for gradually decreasing the quantity of light incident upon the photoelectric devices in the direction away from the center of the incident beam. Under the action of such a mask, the focus states of object images before and behind the predetermined focal plane at substantially equal distances from the focal plane are made approximately equal to each other.

Focus detecting apparatus with a compensation mask

A battery checking device for cameras of the type having a booster circuit the output of which is fed as electrical power to a load is disclosed. In the case of the camera of the type described, when the battery voltage is checked at the output of the booster circuit, an accurate checking operation cannot be carried out. The present invention, therefore allows the voltage at the input of the booster circuit to be checked. Since another problem is that the booster circuit, after having been actuated, takes a predetermined time before its operation is stabilized, and the value of voltage as sensed during this time does not provide an accurate representation, the present invention provides that checking of that input voltage begins after the elapse of a predetermined time from the actuation of the booster circuit when the operation of the booster circuit becomes stable. Accordingly, it is made possible to achieve always an accurate and reliable battery checking operation.

Battery voltage checking device for cameras

Growing community of inventors

Tokyo, Japan

Nobuhiko Shinoda