Ricoh Company, Ltd.

Canon Kabushiki Kaisha

Hitachi, Ltd.

Japan Aerospace Exploration Agency

Hitachi Computer Peripherals Co., Ltd.

Hirokazu Ishii

Shinya Tanaka

Keigo Nakamura

Takehide Mizutani

Yuuji Wada

Kenji Sugiura

Yasunobu Shimizu

Naohiro Kumagai

Junpei Fujita

Kazuki Yogosawa

Seiichi Kogure

Hiroyoshi Haga

Tatsuya Ohsugi

Naoto Kochi

Satoshi Takano

Hiromi Ogiyama

Atsushi Nagata

Hiroshi Saitoh

Itaru Matsuda

Yuji Arai

Yuji Kato

Yasufumi Takahashi

Tomoyuki Watanabe

Toshihiro Sugiyama

Shinichi Kawahara

Osamu Ichihashi

Toshitaka Yamaguchi

Tsutomu Kato

Akio Kutsuwada

Takahiro Suzuki

Yuji Suzuki

Hiroshi Itoh

Masayoshi Nakayama

Shigeru Yoshiki

Naomi Nakamura

Nobuo Onuma

Hiroki Nakamatsu

Kazuya Imafuku

Eiji Shimojo

Ryoh Tanoue

Jyunya Sakuraba

Noboru Onodera

Hidenori Nihei

Masahiro Kawarada

Naoki Sakamoto

Yuko Harasawa

Shigeki Hachiro

Yuko Hayama

Masao Kato

Tetsuya Suwa

Toshiyuki Kabata

Naomi Sugimoto

Ryuuichi Mimbu

Hideyuki Hamano

Masao Maeda

Kazuosa Kuma

Ryo Hasegawa

Kenji Sengoku

Haruji Mizuishi

Tetsuya Kawanabe

Yoshiro Udagawa

Tetsuhito Ikeda

Hideyuki Kido

Futoshi Sasaki

Kazuhiro Usami

Shinjiro Shiraki

Haruki Nagata

Yuta Kajiwara

Kohei Funabiki

Kosuke Komikado

Yoshinori Okuno

Yoshihiro Yamagishi

Reoto Hotta

Hiromi Gomi

Itaru Matsuta

Itaku Matsuta

Hakuti Mizuishi

Kazue Miyamoto

Kenji Sugirua

Hirokazu Aikawa

Takuya Matsuno

An image capturing apparatus comprises an image capturing device, a detection unit configured to detect the subject from the image captured by the image capturing device, a setting unit configured to set a plurality of focus detection frames inside the image based on a result of the detection by the detection unit, a focus detection unit configured to detect a focus state and reliability thereof in each of the plurality of focus detection frames; and a selection unit configured to select a main focus detection frame for performing focus adjustment based on results of the detections by the detection unit and the focus detection unit, wherein the selection unit is configured to cause a method of selecting the main focus detection frame to vary depending on a part of the subject detected by the detection unit.

Image capturing apparatus, control method therefor, and storage medium

A focus detecting apparatus includes an acquisition unit configured to acquire a defocus amount using a pair of image signals corresponding to each of a first focus detecting area and a second focus detecting area larger than the first focus detecting area set for each of the plurality of AF frames, a determination unit configured to determine a priority of the plurality of AF frames using the pair of image signals acquired from each of the first and second focus detecting areas, and a selection unit configured to select the AF frame to be focused using the priority.

Focus detecting apparatus and method using multi-AF frame, and image pickup apparatus

An apparatus includes a reference coordinate selection unit configured to select reference coordinates of two points from a focus frame area set by a setting unit, and determines arrangement intervals of focus frames based on coordinates on image data before correction corresponding to the coordinates selected by the reference coordinate selection unit and a number of focus frames.

Apparatus, method thereof, and recording medium

An image capturing apparatus comprising: an image sensor that includes a plurality of focus detection pixels capable of outputting a pair of signals to be used for focus detection; a setter that sets an exposure control value based on a result of photometry; a controller that controls to perform image shooting by controlling exposure based on the exposure control value set by the setter; a detector that detects a focus state based on the pair of signals read out from the plurality of focus detecting pixels under control of the controller; and an estimator that estimates reliability of the focus state detected by the detector by normalizing an evaluation value obtained at a time of detecting the focus state by the detector in a case where the image shooting is performed using the exposure control value set by the setter.

Image capturing apparatus and control method thereof

To provide an information processing apparatus capable of printing a plurality of additional information without non-uniformity in a case where a plurality of images and the plurality of additional information corresponding to the respective images are arranged and printed on the same print medium, an information processing apparatus prepares a template in which image arrangement frames for arranging the plurality of images individually and an additional information arrangement frame for arranging the plurality of additional information together are laid out. The information processing apparatus arranges the plurality of images in the respective image arrangement frames and arranges the plurality of additional information in the additional information arrangement frame. At this time, the information processing apparatus sets a plurality of areas for describing the respective additional information in the additional information arrangement frame based on the amounts of description of the respective additional information.

Information processing apparatus, information processing method, and printing apparatus

A protocol chip stores requests from a computer in a port queue, on the basis of an index indicating a slot of the port queue which allows subsequent storing. MPs each hold a CI of the slot having undergone a preceding search of the port queue by the MP, search this port queue from the slot that the pointer indicates, search for a request addressed to a logical device to which the MP corresponds, and store this request in a virtual queue corresponding to the logical device, to process the request.

Storage system and queue control method of storage system

A plurality of pairs of image signals each constituted by a first signal obtained by performing photoelectric conversion on light flux that passes through a first pupil area in the exit pupil of an imaging optical system and a second signal obtained by performing photoelectric conversion on light flux that passes through a second pupil area are generated. The plurality of pairs of signals differ in the correlation amount of noise components of the first and second signals constituting the pairs of signals. One of defocus amounts obtained from the pairs of signals is used to adjust the focus distance of the imaging optical system. Accordingly, a focus detection device that can suppress the influence of correlated noise included in the pairs of image signals on focus detection and a control method thereof are obtained.

Focus detection device, control method thereof, and image capture apparatus

A focus detection apparatus includes a determination unit configured to determine a degree of effect of noise included in a pair of parallax image signals, and an acquisition unit configured to acquire information about a phase difference between the pair of parallax images based on a calculation of correlation between the pair of parallax image signals. The acquisition unit selects a filter used to acquire the information about the phase difference from among a plurality of filters having different frequency characteristics based on a determination result of the determination unit, and outputs, as a focus detection result, the information about the phase difference acquired by the correlation calculation based on the pair of parallax image signals applied to the selected filter.

Focus detection apparatus and image pickup apparatus

An image forming apparatus including an image bearer, a transfer-bias power source, an environment sensor, and a controller. The controller controls the transfer-bias power source to change the DC component and the AC component, according to the at least one of temperature and humidity detected by the environment sensor and a duty of the transfer bias. The duty is A/(A+B)&#xd7;100[%] where A denotes an area on a return-directional side to move toner from the recording sheet back to the image bearer, relative to a center value (Voff) of a maximum value and a minimum value of the transfer bias in one cycle of a waveform of the transfer bias, and B denotes an area on a transfer-directional side to move the toner from the image bearer to the recording sheet, relative to the center value (Voff) in the one cycle.

Image forming apparatus

An improved image forming apparatus includes an image bearer, a nip forming member, a transfer power source, and a controller. The controller switches a transfer mode between a first mode to transfer the toner image onto a first type sheet having a surface smoothness higher than a surface smoothness of a second type sheet and a second mode to transfer the toner image onto the second type sheet. The controller controls the transfer power source to output the transfer bias having an opposite-peak duty of greater than or equal to 50% that is a duty on the side of the opposite-peak value in the first mode. The controller controls the transfer power source to output the transfer bias having an opposite-peak duty of less than 50%, which is different from the opposite-peak duty of the first mode, in the second mode.

Image forming apparatus and image forming method

An image forming apparatus includes an image bearer to bear a toner image, a nip forming member contacting the image bearer to form a transfer nip, and a transfer power source. The transfer bias has a transfer peak value to electrostatically move toner from the image bearer to the recording sheet and an opposite-peak value to electrostatically move less toner from the image bearer to the recording sheet than the transfer peak value. An opposite-peak duty of the transfer bias is less than 50%. The opposite-peak duty is tr/T&#xd7;100% where T is one cycle of the transfer bias and tr is a time period during which the transfer bias is on a side of the opposite-peak value relative to an offset voltage of the transfer bias in the one cycle T.

Image forming apparatus and image forming method for controlling a secondary transfer bias according to recording sheet type

An image forming apparatus including an image bearer; a nip forming member, a nip width changing device, a power source; and a controller. The controller switches between a first mode and a second mode according to a predetermined condition. In the first mode, a duty of the transfer bias is a first duty and a width of a transfer nip is a first width. In the second mode, the duty of the transfer bias is a second duty lower than the first duty and the width of the transfer nip is a second width greater than the first width. The duty is (T&#x2212;Tt)/T&#xd7;100% where T denotes one cycle of the transfer bias, and Tt denotes a time period, in which the transfer bias is on a transfer-directional side relative to a time-averaged value of the transfer bias, in the one cycle.

An image forming apparatus includes an image bearer, an image forming device to form a toner image on the image bearer with toner, a power source to output a bias to transfer the toner image onto a recording medium, and control circuitry. The circuitry controls the power source to decrease a peak-to-peak voltage of the bias in response to increase in at least one of temperature and humidity, when a time-averaged voltage of the bias is on a transfer side of transferring the toner to the recording medium, from a median value of maximum and minimum voltages of the bias. The circuitry controls the power source to increase the peak-to-peak voltage of the bias in response to increase in at least one of temperature and humidity, when the time-averaged voltage of the bias is on a return side of returning the toner to the image bearer, from the median value.

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Tokyo, Japan

Hirokazu Ishii