Canon Kabushiki Kaisha

Fujitsu Corporation

Takashi Kawabata

Shinji Sakai

Tokuichi Tsunekawa

Takao Kinoshita

Kazuya Hosoe

Nobuhiko Shinoda

Susumu Matsumura

Yuichi Sato

Akira Ishizaki

Yoshihito Harada

Toshio Sakane

Tadashi Ito

Nozomu Kitagishi

Akira Hiramatsu

Katsutoshi Miyahara

Takehiko Fujiyama

Tatsuya Taguchi

Toshiaki Usui

Masaharu Kawamura

Koichi Washisu

Masanori Yamada

Hiroshi Ohmura

Masayoshi Yamamichi

Hiroyuki Wada

Hiroyasu Murakami

Hideyuki Arai

Ryosuke Miyamoto

Shigeru Ogino

Masaki Higashihara

Yukio Odaka

Hitoshi Mukohjima

Shinichi Matsuyama

Eiji Nishimori

Kanehiro Sorimachi

Toshiaki Shingu

Yasuteru Ichida

Hidetoshi Masuda

Katsumi Azusawa

Minoru Fukuda

Shin Yamaguchi

Hiroshi Miyanari

Kiyokazu Churei

Akira Yoshihara

Ryoichi Dangi

Koichi Ohmori

Ryouichi Dangi

Kazuyas Hosoe

Shyuichi Kiyohara

At least one exemplary embodiment is directed to a recording apparatus, which includes a sensor having a plurality of light-emitting elements and a plurality of light-receiving elements. The sensor can be configured to perform a detection operation. The detection operation includes at least two of an operation for detecting an edge of a recording medium, an operation for detecting a distance between a recording head and the recording medium, an operation for detecting the density of an image formed on the recording medium, and an operation for detecting the kind of the recording medium.

Recording apparatus and control method

At least one exemplary embodiment is directed to a sensor for measuring the distance between the sensor and a measuring surface, which includes a light-emitting element and a plurality of light-receiving elements. The light-receiving elements are arranged so that the light axes thereof do not cross one another.

Sensor and recording apparatus using the same

An information processing apparatus using a distance measuring apparatus includes a distance measuring device for producing distance information related to a distance for each of different areas in a scene, a photometry device for measuring brightness information of the scene, the photometry device dividing each of the areas measured by the distance measuring device into a plurality of divided areas and outputting the brightness information for each of the divided areas, and a signal processor. The signal processor detects a characteristic portion on the scene from the distance information for each of the areas and the brightness information from each of the divided areas, detects the characteristic portion in units for each of the divided areas, compares the characteristic portion with standard information on the scene and extracts scene information.

Information processing apparatus and remote apparatus for object, using distance measuring apparatus

A focusing state detecting or distance measuring apparatus or camera which measures a focusing state or distance of an object for a plurality of different areas in a scene. The apparatus or camera includes a light receiver for receiving a light beam associated with each area associated in the scene at a light receiving portion corresponding to each area. Each light receiving portion has a plurality of elements and provides an output corresponding to the received light. The apparatus also includes a processing circuit for performing calculation and regulation functions. When performing a calculation function, the circuit performs a correlation calculation on an output of each of the light receiving portions to detect a focusing state or distance for each light receiving portion. When performing a regulation function, the circuit sets a range of elements of each light receiving portion whose outputs are subject to the correlation calculation When the correlation calculation is to be performed at a particular light receiving portion and the correlation calculation at an other light receiving portion has already been performed, the circuit sets the range elements of the particular light receiving portion whose outputs are subject to the correlation calculation based on the result of the correlation calculation for the other light receiving portion.

Multiple points distance measuring apparatus

A distance measuring apparatus provided with a plurality of light-emitting units and a plurality of light-receiving units. The light emission period of each of the light-emitting units is changed over at each predetermined period interval. A plurality of light-receiving elements constituting each light-receiving unit are constructed so as to receive the reflected lights from a plurality of distance measurement fields of view on an object to be photographed in a plurality of distance measurement zones obtained by dividing a range to be measured into several blocks. The input signal from each of the light-receiving elements in each of the distance measurement zones is changed over in synchronism with the light emission period of the light-emitting units and the output signals for the respective distance measurement zones are compared, whereby a distance data indicative of the distance measurement zone most approximate to the object distance is put out.

Distance measuring apparatus

An optical apparatus includes area sensors which are made to differ in picture element pitch between the central portions and the marginal portions thereof (the marginal portions are made to have a coarse picture element pitch since it is not very meaningful even if the picture element pitch is made fine because the performance of an optical system is limited, and the central portions are made to have a dense picture element pitch) and the changeover of the respective picture elements is electronically effected by reading-out means so that two kinds of object field information (detailed information and coarse information) may be obtained from the area sensors.

Optical apparatus having an area sensor with a coarse picture element

A charging state display apparatus has a first means for indicating a charging amount and a second means for causing the first means to indicate a charging amount from a restart of charging.

Charging state display apparatus

This specification discloses an apparatus in which data regarding the proper lens positions of a diopter correcting lens when an observer is wearing spectacles and when the observer is not wearing spectacles are pre-stored in a memory circuit, the presence or absence of the spectacles is detected by a detecting circuit for detecting the state of an anterior eye part, the data in the memory circuit are extracted in conformity with this state, and the diopter correcting lens is moved on the basis of these data.

Diopter correcting apparatus

Distance measuring device

Camera apparatus for use with an automotive vehicle having a rear view mirror. The rear view mirror comprises a half-mirror, light reflected therefrom being visible to an occupant of the vehicle. A lens is disposed adjacent to the half-mirror and receives light passing through the half-mirror. An image pickup device is optically coupled to the lens and receives light passing therethrough to form an image signal corresponding to the received light.

Camera device for moving body

Video and audio multiplex transmission system

An electronic camera for synchronous recording of still pictures on a rotating record bearing medium in which initialization of an image pickup element and release of a shutter are carried out in response to a release actuating signal, and, after the shutter is closed, the photoelectric information of the image pickup element is synchronously recorded on the medium, whereby the performance of an anti-blooming control for the image pickup element is limited in between the initialization of the image pickup element and the start of the synchronous recording.

Electronic camera for synchronous recording of still pictures on

Disclosed is a focus adjustment information forming device of the kind arranged to measure distances at a plurality of distance measuring areas on a picture plane specified by optical means which has its focal point being adjusted and to form information on adjustment of the focal point, the plurality of distance measuring areas including a center distance area located approximately in the center of the picture plane. The device comprises first priority means for giving priority to a measured distance value which represents the nearest distance among measured distance values obtained from the distance measuring areas; a second priority means for giving priority to the measured distance value obtained from the center distance measuring area according to its relations to the measured distance values of other distance measuring areas when one of the measured distance values of the distance measuring areas other than the center distance measuring area represents the nearest distance; and focus adjustment information forming means for forming information on adjustment of the focal point of the optical means on the basis of outputs of the first and second priority means.

Focus adjustment information forming device

A data packing circuit, used in a variable length coder, for receiving code words including variable length codes and code length information of the variable length codes, and packing the variable length codes with no gaps into successive units of bits having predetermined length. The code word is shifted in a first direction by a number of bits equal to a shift number, and in parallel, the code word is shifted in a second direction opposite to the first direction by a number of bits equal to the difference between the predetermined length and the shift number, and zero is filled in each vacant bit which is generated by the above shift operations. The shift number is determined by accumulation of the code lengths by modulo-n addition, n being equal to the predetermined number, and a carry addition of the code lengths whether or not a carry occurs over the above predetermined length in the accumulated value. Logical sums of respective bits of the shifted result in the first direction and corresponding bits of the output of an intermediate date register are obtained. The intermediate data register latches the logical sums in every cycle of the code word when a carry is not detected in the above accumulation, and latches the shifted result in the second direction in every cycle of the code word when the carry is detected. The logical sums are latched as output data of the data packing circuit when the carry occurs.

Data packing circuit in variable length coder

A color scanner for converting color data of a color original (e.g., a photographic film) into an electrical signal, includes a level comparator for discriminating the type of film (e.g., color negative vs. color positive, color vs. monochrome, type of color negative) in accordance with output signals, e.g., color component signals, from a sensor (i.e., based on a light transmittance of an unexposed portion of the film). The output from the level comparator is supplied to an accumulation time control block through a register, a selector, and the like. The accumulation time control block corrects the electrical signal based on the discrimination result from the level comparator irrespective of the type of film, so that an accumulation time of the sensor is changed by changing a bias voltage applied thereto.

Film reading apparatus which reads an unexposed portion of a film to

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Kanagawa, Japan

Takashi Kawabata