Fujitsu Corporation

Canon Kabushiki Kaisha

Fujitsu Ten Limited

Hiroaki Kameyama

Shinichi Sazawa

Yuichi Sato

Kohichi Nakamura

Hiroki Hiyama

Kazuo Yamazaki

Hideo Kobayashi

Koichiro Iwata

Seiichirou Sakai

Kazuhiro Saito

Masaki Sato

Yu Arishima

Masayoshi Hashima

Masanobu Oomura

Takehiko Fujiyama

Kaname Yoshida

Masahiro Kobayashi

Tetsuya Itano

Daisuke Kobayashi

Masanori Ogura

Hideaki Takada

Kazunari Fujii

Junji Iwata

Takamasa Sakuragi

Yu Maehashi

Tatsuya Ryoki

Keisuke Ota

Kazuhiro Sonoda

Masanobu Ohmura

Makiko Saito

Yasuji Ikeda

Tomoya Kumagai

Hiroyuki Higuchi

Yasuhiro Oguro

Yuichi Terui

Takuya Hara

Tomoyuki Furutono

Yosuke Senta

Hideki Abe

Daichi Shimada

Akihisa Shouen

Taro Ohmori

Hidenori Gohhara

Seiji Matsuo

Yuichi Satou

Yuuichi Terui

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 photoelectric conversion device includes a pixel array having aperture pixels arranged so as to form rows and columns, signal lines arranged in the pixel array so as to allow readout of signals from the aperture pixels, current sources connected to the signal lines, a first voltage supply line configured to supply a first reference voltage to the aperture pixels, a first pad connected to the first voltage supply line, a bias circuit configured to supply a bias voltage to the current sources, a second voltage supply line electrically separated from the first voltage supply line, and configured to supply a second reference voltage to the bias circuit, and a second pad connected to the second voltage supply line.

Pixel array having separate voltage supply lines for pixels and bias circuitry

A photoelectric conversion apparatus includes a second substrate including a signal processing circuit configured to perform signal processing using machine learning on a signal output from the first substrate. The second substrate is disposed on the first substrate in a multilayer structure. The signal processing circuit is so disposed to overlap with a pixel array but not overlap with a light-shielded pixel area as seen in a plan view.

Photoelectric conversion apparatus, photoelectric conversion system, and mobile body

An analog-to-digital conversion circuit includes a comparator circuit configured to perform processing of comparison between an analog signal and a ramp signal, and a counter configured to perform count processing in parallel with the comparison processing by the comparator circuit. The analog-to-digital conversion circuit acquires digital data, which is a count value corresponding to the comparison processing, and subjects the analog signal to analog-to-digital conversion. A period from the start to the end of the analog-to-digital conversion of the one analog signal includes a first period and a second period following the first period. The first and the second periods are switched based on an output of the counter. The count processing is performed at a high speed during the first period and performed at a low speed during the second period.

Analog-to-digital conversion circuit using comparator and counter, photoelectric conversion apparatus using comparator and counter, and photoelectric conversion system using comparator and counter

A photoelectric conversion apparatus includes a control unit configured to change a voltage of an input node from a first voltage toward a predetermined voltage during a predetermined time period after the voltage of the input node changes to the first voltage and before the voltage of the input node changes to a second voltage. A method of driving the photoelectric conversion apparatus includes controlling changing of the voltage of the input node from the first voltage toward the predetermined voltage during the predetermined time period.

Photoelectric conversion apparatus, method of driving photoelectric conversion apparatus, photoelectric conversion system, and moving body

A ramp signal output circuit includes a first reference current source transistor to which a current is supplied from a current source, a first line connecting a gate of the first reference current source transistor and a gate of a first current source transistor, a branch point where a second line branches from the first line, a first ramp signal generation unit connected to the first current source transistor, and a second ramp signal generation unit connected to a second current source transistor, wherein the second line is connected to a gate of the second current source transistor.

Ramp signal output circuit and photoelectric conversion apparatus

A communication device that is used in a multi-point communication includes: a receiver, a processor and a transmitter. The receiver receives, from a target communication device included among one or more destination communication devices of the communication device, information that indicates a reception bandwidth allocated to a data transmission conducted from the communication device to the target communication device. The processor calculates a transmission bandwidth to be allocated to the data transmission conducted from the communication device to the target communication device according to information relating to the one or more destination communication devices. The transmitter transmits data to the target communication device at a rate that does not exceed an upper limit transmission rate. The upper limit transmission rate is determined according to a smaller one of values of the reception bandwidth and the transmission bandwidth.

Communication device, communication system and method for controlling communication rate in the communication system

According to the present disclosure, column circuits operate selectively in a first drive mode to output a comparison signal or a second drive mode to acquire a correction value of a first reference signal and a second reference signal, and a selector circuit of a second column circuit selects the same reference signal out of the first reference signal and the second reference signal in the first drive mode and the second drive mode.

Imaging device, imaging system, and drive method of imaging device

A communication relay device receives a packet transmitted from a first communication device to a second communication device and forwards the packet to a correspondent communication relay device. The communication relay device includes: a processor and a communication processor. The processor extracts, from a request packet that requests a connection to the second communication device, a first identifier for indicating the first communication device, when the communication relay device receives the request packet from the first communication device, and generates configuration information including the first identifier. The communication processor transmits the configuration information to the correspondent communication relay device such that the correspondent communication relay device converts source information of the packet transmitted from the first communication device to the second communication device into the first identifier and forwards the packet for which the source information has been converted to the second communication device.

Communication relay device and communication relay method

A communication device includes a memory and a processor. The processor is configured to extract first division data from transmission data when transmitting the transmission data. The processor is configured to store, as held data, the first division data in the memory in association with first identification information that identifies the transmission data. The processor is configured to transmit, to a communication destination, a first transmission packet including the transmission data and information that identifies the held data to cause the communication destination to store second division data which is not included in the held data, among the transmission data in association with the first identification information. The processor is configured to transmit, when transmitting the transmission data after the transmission of the first transmission packet, a second transmission packet including the first identification information and the held data instead of the transmission data to the communication destination.

Communication device and communication system

A device includes a transmission/reception unit configured to receive a packet transmitted from a communication device to a destination device, a control unit configured to separate data received through the packet into transmission data and control information, a replacement process unit configured to generate replacement data resulting from replacing data associated with an identifier with the identifier in the transmission data when data that has been transmitted toward the destination device in association with the identifier is included, and a transmission unit configured to transfer the replacement data toward the destination device, wherein the control unit generates connected data resulting from connecting respective pieces of data obtained by removing the control information from the data, and discards the control information, and the replacement process unit generates the replacement data by replacing data associated with the identifier with the identifier in the connected data.

Transfer device, communication system and communication method

A relay device includes a first relay device connected to a server and a second relay device connected to a client. The first relay device includes a request unit that requests the server to prefetch data in response to a request from the client; a control unit that caches the data in a first cache; and a notification unit that requests the server to prefetch data in response to a current request from the client, and notifies the second relay device of a predetermined signal when the data matches the data cached in the first cache. The second cache of the second relay device caches a part of the data cached in the first cache. The response unit performs, detecting the predetermined signal, a proxy response to the client with the data cached in the second cache in response to a data request from the client.

Relay device, and relay method

A transfer device includes a memory and a processor configured to, when a plurality of packets are received from a client apparatus, register each of identifiers uniquely identifying each of the plurality of packets into sequence information in a reception order of the plurality of packets, when a first packet is received from the client apparatus, transmit the first packet to a destination apparatus and specify first identifier of a second packet next to the first packet in accordance with an order of the identifiers registered in the sequence information, and transmit the second packet corresponding to the specified first identifier to the destination apparatus.

Transfer device, transfer system, and transfer method

A reception-side apparatus determines whether or not data duplicating a part of received data from a transmission-side apparatus is stored in the first storage that stores first data which has been received, and notifies, when data duplicating a part of the received data is stored in the first storage, the transmission-side apparatus of prediction information on duplicate reception of the first data. A transmission-side apparatus compares, when the prediction information is received, second data to be transmitted and a part of the first data in a second storage that stores the first data which has been transmitted based on the prediction information, determines whether or not there is a first part of the first data matching the second data in the second storage, and transmits, when there is the first part of the first data in the second storage, outline information on the second data.

System and apparatus for removing duplicate in data transmission

In a period in which a pixel signal of another pixel is read out from the pixel, a transistor connected to a floating diffusion region of a pixel not performing reading out of a pixel signal from the pixel is turned off.

Driving method of imaging apparatus, imaging apparatus, and imaging system

Growing community of inventors

Kawasaki, Japan

Hiroaki Kameyama