Canon Kabushiki Kaisha

Nippon Telegraph and Telephone Corporation

Hideaki Takada

Hiroki Hiyama

Akira Okita

Katsuhito Sakurai

Toru Koizumi

Masanori Ogura

Seiichirou Sakai

Shiro Suyama

Kazutake Uehira

Motohiro Makiguchi

Kazuo Yamazaki

Yu Arishima

Yasuhiro Kawabata

Masahiro Kobayashi

Toshiaki Ono

Kimitaka Tsutsumi

Yoichi Haneda

Kenichi Noguchi

Takashi Yano

Takanori Watanabe

Atsushi Suzuki

Yoshiaki Takayanagi

Koichiro Iwata

Masahiro Ueno

Hiroaki Kameyama

Tatsuya Ryoki

Mineo Uchida

Tokihide Ebata

Yasuhiro Numata

Makiko Saito

Yasuo Yamazaki

Shinichiro Shimizu

Yasuhiro Oguro

Atsushi Munakata

Munekazu Date

Akio Takeda

Takuya Hara

Akira Ohtani

Yuu Arishima

Yuuichirou Hatano

Shinya Nishida

Tsuyoshi Ohtani

Yuichiro Hatano

Akira Oseto

Tatsunori Kato

Ryunosuke Ishii

Taiki Fukiage

Hiroki Hyama

A photoelectric conversion device includes a pixel that outputs a pixel signal in accordance with an incident light, a plurality of signal holding units each configured to hold the pixel signal, an AD conversion unit that converts the pixel signal from analog signal to digital signal, a first switch circuit provided between the pixel and the plurality of signal holding units, and a second switch circuit provided between the plurality of signal holding units and the AD conversion unit. The first switch circuit is configured to connect the pixels to the plurality of signal holding units individually to hold one pixel signal in the plurality of signal holding units, respectively, in different sampling periods, the second switch circuit is configured to switch connection between the plurality of signal holding units and the AD conversion unit, and pixel signals held in the plurality of signal holding units are averaged and output.

Photoelectric conversion device and imaging system

A plurality of comparison circuits each including a first terminal for inputting a first analog signal and a second analog signal and a second terminal connected to a wiring for transmission of a ramp signal A first operation changes an electric potential of the wiring from a predetermined electric potential to a first electric potential to cause at least one of the plurality of comparison circuits to retain a first offset. A second operation, after the first operation, converts the first analog signal into a digital signal. A third operation, after the second operation, changes the electric potential of the wiring to an electric potential included in a range of from the predetermined electric potential to the first electric potential. A fourth operation, after the third operation, converts the second analog signal into a digital signal.

Driving method for AD conversion circuit, AD conversion circuit, photoelectric conversion device, and apparatus

A housing including a first viewing direction and a second viewing direction opposite to the first viewing direction, a first display unit disposed to be spaced from a top surface on a side of one end of the housing at a first interval with a display surface facing the housing, a second display unit disposed on a side of the other end of the housing, a first optical element configured to transmit a portion of light emitted from the first display unit and reflect a portion of the light, a second optical element configured to transmit a portion of light emitted from the second display unit and reflect a portion of the light, and a third optical element configured to transmit a portion of the light emitted from the first display unit and the second display unit and reflect a portion of the light.

Aerial image display device

Provided is a display method that prevents degradation of image quality due to ghosting. The display method performed with a display apparatus includes a viewpoint position detection step (S) for detecting a viewpoint position d that is an interval between a reflection screen and a viewer &#x3b1;, a diffusion property control step (S) for controlling a diffusion property of the reflection screenin accordance with the viewpoint position d, and a projection step for projecting multiple viewpoint video images having disparity from multiple projectors to the reflection screen. The diffusion property control step (S) includes controlling the diffusion property of the reflection screenby varying a voltage or a duty cycle of an ac signal that is applied to a diffuser layer included in the reflection screen.

Display device and method

Provided is an image generation technology capable of suppressing unpleasantness associated with fluctuation in image quality caused by the viewer's viewpoint movement. A synthesis ratio determination unit of an image generation apparatus includes: an image quality evaluation index calculation unit that generates a synthesis image Jfrom an observation viewpoint image Iand an intermediate viewpoint image I, and a synthesis image Jfrom an observation viewpoint image Iand an intermediate viewpoint image I, for a plurality of synthesis ratios, calculates an image quality evaluation index in an observation viewpoint V, an image quality evaluation index in an intermediate viewpoint V, and an image quality evaluation index in an observation viewpoint Vby using the synthesis images Jand J, and calculates a variation v of an image quality evaluation index by using the image quality evaluation index in the observation viewpoint V, the image quality evaluation index in the intermediate viewpoint V, and the image quality evaluation index in the observation viewpoint V; and an image quality evaluation index comparison unit that determines a synthesis ratio A based on the variation v of the image quality evaluation index.

Image generation apparatus, image generation method, and program

A stereoscopic image display system includes: a plurality of projectors arranged side by side with predetermined spacing and project respectively viewpoint images for installation positions in the same direction, the viewpoint images being related to the same object; a screen displaying a superimposed image for the object, based on two adjacent images, among the projected images, that are the closest from a line-of-sight direction of an observer; and an image holding unit holding information about a first viewpoint image to which pattern information for shifting a phase corresponding to a predetermined period is added and information about a second viewpoint image from which the pattern information is subtracted, which are generated from each of a plurality of base images as the viewpoint images to be respectively projected by the plurality of projectors. Each projector projects the first and second viewpoint images related to preceding and succeeding stages onto the screen.

Stereoscopic image display system, stereoscopic image display method and projector

Provided is a sound image reproduction device, sound image reproduction method, and sound image reproduction program that can support monaural sound sources and is capable of imparting directivity to virtual sound sources in a space. An acoustic signal processing device (sound image reproduction device)that generates virtual sound sources in a space using multiple loudspeakers arranged in a straight line, includes: a focal-point position determination unitthat determines the position of each virtual sound source to generate multiple virtual sound sources in a circular arrangement; a filter-coefficient determination unitthat calculates an impulse response vector for each loudspeaker by performing an inverse Fourier transform on a driving function for each loudspeaker that is used to generate a virtual sound source at the position of each virtual sound source and in which different weights are given to some of the virtual sound sources; and a convolution calculation unitthat calculates the convolution of one inputted acoustic signal with the impulse response vector for each loudspeaker and outputs each acoustic signal to the corresponding the multiple loudspeakers.

Sound image reproduction device, sound image reproduction method, and sound image reproduction program

Provided is an image generation technology capable of suppressing unpleasant feelings caused by fluctuation in image quality caused by the viewer's viewpoint movement. The image generation technology includes an image generation unit configured to generate a pseudo viewpoint image Iand a pseudo viewpoint image I, by using disparity inducing edge Dhaving a phase difference &#x3c6;k from a viewpoint image I, where &#x3c6;k(1&#x2264;k&#x2264;K) is set as a real number satisfying 0&#x3c;&#x3c6;&#x3c; . . . &#x3c;&#x3c6;K&#x2264;&#x3c0;/2, an output image generation unit configured to generate an output image Out(1&#x2264;m&#x2264;2K&#x2212;1), from the pseudo viewpoint image I(1&#x2264;m&#x2264;2K+1), the viewpoint image I is set as a pseudo viewpoint image I, where the pseudo viewpoint images I, I(0&#x2264;k&#x2264;K) are arranged in a sequence of I, I, . . . , I, I(=I), I, . . . , and Iis set as I, I, . . . , I, I, I, . . . , I, and the output image Outand the output image Out(1&#x2264;m&#x2264;2K&#x2212;2) include a phase modulation component that is canceled out when synthesized and visually recognized.

An acoustic signal processing deviceincludes: a focal point position determination unitthat obtains a plurality of sets of initial focal point coordinates, coordinates of the virtual sound source, and a direction of directivity thereof, and for a pair of sets of initial focal point coordinates with different polarities among the plurality of sets of initial focal point coordinates, multiplies the sets of initial focal point coordinates by a rotation matrix based on the coordinates of the virtual sound source to thereby determine sets of focal point coordinates, the rotation matrix being specified from the direction of the directivity; a circular harmonic coefficient conversion unitthat calculates weights to be applied to multipoles including the sets of focal point coordinates from a circular harmonic coefficient; a filter coefficient computation unitthat, for each of the speakers in the speaker array, computes a weighted driving function to be applied to the speaker from the sets of focal point coordinates, polarities of the sets of focal point coordinates, and the weights to be applied to the multipoles; and a convolutional operation unitthat, for each of the speakers in the speaker array, convolves the weighted driving function for the speaker into the input acoustic signal to output the output acoustic signal for the speaker.

Acoustic signal processing device, acoustic signal processing method, and acoustic signal processing program

A semiconductor device has a first transistor of a first conductivity type and a second transistor of a second conductivity type, the first transistor is arranged in an active region of a semiconductor substrate, and a gate electrode and the active region overlap with each other in a plan view and also have a portion located between the source and the drain of the first transistor of the semiconductor substrate. In the channel width direction, an impurity concentration of the second conductivity type is higher at the end than on the center side of the portion.

Semiconductor device, semiconductor memory, photoelectric conversion device, moving unit, manufacturing method of photoelectric conversion device, and manufacturing method of semiconductor memory

Disclosed embodiments perform readout at a high rate without being affected by transition of pixel transistors. A solid state imaging device of an embodiment has a pixel having a photoelectric conversion unit that generates charges, an amplification transistor including an input node that receives a signal based on the charges generated in the photoelectric conversion unit, and a reset transistor that resets the potential of the input node of the amplification transistor; a signal processing circuit that reads out a signal from the pixel via a signal line; and a switch provided between the signal line and an input node of the signal processing circuit, and a signal value of a control signal applied to the gate of the reset transistor changes while the switch is in the off-state.

Solid state imaging device, imaging system, and drive method of solid state imaging device

A solid-state image sensor comprising a pixel array in which a plurality of pixels are arrayed in a matrix having a plurality of rows and a plurality of columns, wherein the pixel array includes a first wiring layer and a second wiring layer arranged above the first wiring layer, the first wiring layer includes first column signal lines arranged at the respective columns of the pixel array, and the second wiring layer includes second column signal lines arranged at the respective columns of the pixel array.

Solid-state image sensor

A photoelectric conversion apparatus of the present invention includes a first semiconductor region functioning as a barrier against signal charges between a first and a second photoelectric conversion element, and a second semiconductor region that has a width narrower than that of the first semiconductor region and functions as a barrier against signal charges between a first and the third photoelectric conversion element. A region with a low barrier is provided at least a part between the first and the second photoelectric conversion element.

Photoelectric conversion apparatus and imaging system using the same

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Yokohama, Japan

Hideaki Takada