Samsung Electronics Co., Ltd.

Samsung Sds Co., Ltd.

Korea Advanced Institute of Science and Technology

Yonsei University

Kwang-Hyun Lee

Han Vit Yang

Kyoung-Min Koh

Jae-Cheol Yun

Moo-young Kim

Seon-Ju Lee

Tae-Chan Kim

Seok-yong Hong

Young-Gu Jin

Kyoung-ho Ha

Euisik Yoon

Tae-Yon Lee

Dong-jae Shin

Tae-Seok Oh

Dong Ki Min

Yong Kyun Lim

Je Il Ryu

Yoon Dong Park

Jong-Sung Kim

Min-Sun Keel

Ho-Chul Ji

Ju Hwan Jung

Sang-Chul Sul

Hee-jun Lee

Woong Joo

Dae-Kyu Shin

Kwan-Sik Cho

Yu-Jin Park

Hyun-il Byun

Gleb Andreevich Odinokikh

Ju-hyun Ko

Ju-Hyun Ko

Sergey Stanislavovich Zavalishin

Kwang-Min Choi

Alexey Bronislavovich Danilevich

Jung-Hyung Pyo

Vitaly Sergeevich Gnatyuk

Sin-hwan Lim

Hee-Jun Lee

Aleksei Mikhailovich Fartukov

Seok Yong Hong

Vladimir Alekseevich Eremeev

Xenya Yurievna Petrova

Seong-Mi Park

Yun-Hong Kim

Alexey Mikhailovich Fartukov

Vladimir Alexeevich Eremeev

Mikhail Vladimirovich Korobkin

Aleksei Bronislavovich Danilevich

Seong Il Im

Ju-Ha Kim

Soon-Ik Cho

Jong-Song Kim

Ju-Woan Yoo

An analog-to-digital converter includes a comparator, a switch, and a counter circuit. The comparator is configured to generate a comparison signal by comparing an analog signal received through a first signal line and a reference signal received through a second signal line. The switch is coupled between the first signal line and the comparator. The switch is open before the analog signal is applied to the first signal line to disconnect the first signal line from the comparator, and is closed after the analog signal is applied to the first signal line to provide the analog signal to the comparator. The counter circuit is configured to generate a digital signal corresponding to the analog signal by performing a count operation in synchronization with a count clock signal based on the comparison signal.

Analog-to-digital converters and image sensor having the same

An image sensor includes a pixel array in which a plurality of pixels, first and second row selection lines separated from each other, and first and second column lines separated from each other are disposed and a column selecting circuit configured to connect the first and second column lines using a column selection signal. The pixel array includes a first pixel which is connected to the first row selection line and the first column line and a second pixel which is disposed in the same row as the first pixel and connected to the second row selection line and the second column line.

Image sensor having multiple operation modes

An image sensor can include a pixel array including a plurality of unit pixels and a row driver arranged in a matrix form that includes a plurality of rows and a plurality of columns. Respective ones of the unit pixels may convent an incident light to an electric signal and may store the electric signal. The row driver may sequentially scan the plurality of rows and may sequentially perform an electronic shutter operation and read-out operation. The electronic shutter operation may reset the stored electric signal in each unit pixel and the read-out operation may read-out the stored electric signal in each unit pixel. The electric shutter operation can include a preliminary shutter operation and a main shutter operation which are sequentially performed on one row. The row driver may overlap the main shutter operation on a first row and the preliminary shutter operation on a second row.

Image sensors, image acquisition devices and electronic devices utilizing overlapping shutter operations

Provided are an image sensor and a method of driving the same. The image sensor includes n optical black pixels which are arranged in the same horizontal line; and m comparators which are matched with the n optical black pixels, wherein n is a natural number greater than or equal to two, and m is a natural number greater than n.

Image sensor for reducing horizontal noise and method of driving the same

A cluster system and a method for providing service availability. The cluster system includes a first physical server having registered therein an active virtual machine; and a plurality of physical servers, wherein the plurality of physical servers comprises a second physical server having registered therein a standby virtual machine corresponding to the active virtual machine, the active virtual machine failing over to the standby virtual machine when a failure occurs in the first physical server, wherein each of the plurality of physical servers stores post-failure registration information when the failure occurs, wherein the post-failure registration information associates the active virtual machine with a physical server among the plurality of physical servers, and wherein the physical server is different from the second physical server.

Cluster system and method for providing service availability in cluster system

An image sensor includes a sampling circuit, which is responsive to ramp and input signals provided by a pixel array. The sampling circuit is configured to perform a correlated double sampling (CDS) operation on a reset component of the input signal and an image component of the input signal. A reset circuit is also provided, which is configured to reset an output signal generated by the sampling circuit to a first level in response to a reset control signal. This reset control signal can be active during at least one of a first reset interval and a second reset interval. The first reset interval precedes a first comparison interval during which a first comparison operation is performed on the ramp signal and the reset component. The second reset interval precedes a second comparison interval during which a second comparison operation is performed on the ramp signal and the image component.

Correlated double sampling circuit, analog to digital converter and image sensor including the same

An ambient light sensor includes a photoelectric conversion unit, a current control unit, a signal conversion unit and a comparison unit. The photoelectric conversion unit provides a photo current having a magnitude corresponding to illuminance of incident light to a first node. The current control unit generates a control current exponentially proportional to an elapse time based on a clock signal, provides the control current to the first node, and outputs a digital code corresponding to the elapse time in response to a reset signal. The signal conversion unit generates a comparison voltage logarithmically proportional to a sum of the photo current and the control current. The comparison unit generates the reset signal by comparing a magnitude of the comparison voltage and a magnitude of a reference voltage. The ambient light sensor generates the digital code effectively representing illuminance of ambient light that eyes of a human being perceives.

Ambient light sensor and electronic system having the same

An optical biosensor is provided. The optical biosensor includes a biosensing unit, a detection unit, and a feedback circuit. The biosensing unit is configured to receive an input optical signal, sense a biomaterial, and generate a sensed optical signal. The detecting unit is configured to convert the sensed optical signal into an electrical signal and output the electrical signal as a detection signal. The feedback circuit is configured to output a feedback signal. The feedback signal is generated based on the detection signal and is changed according to a changed amount of a resonant wavelength of the biosensing unit.

Optical biosensor and biosensing system with resonant feedback controls

A correlated double sampling (CDS) circuit may include a sampling circuit and a switching circuit. The CDS circuit may perform a CDS operation on a reset component of an input signal and an image component of the input signal based on a ramp signal, and the CDS circuit may generate an output signal. The switching circuit may include an auto-zero switch that connects a first input terminal receiving the input signal to an output node in response to an auto-zero control signal during an auto-zero interval. The switching circuit may connect a first terminal of the auto-zero switch to a reference voltage in order to cutoff a leakage current flowing to the auto-zero switch in response to a first boosting control signal during a first comparison interval and a second comparison interval. The output signal may be provided at the output node.

Correlated double sampling circuit and image sensor including the same

An image sensor senses object information and converts the sensed object information into an electrical signal. An image processing apparatus uses the image sensor. The image sensor includes a column signal line connected to output terminals of a plurality of pixel sensors, a comparator circuit configured to output a signal corresponding to a comparison result of a signal output to the column signal line and a reference signal, an ADC circuit configured to convert an analog signal corresponding to an optical signal sensed by the pixel sensor selected from the plurality of pixel sensors connected to the column signal line into digital data based on the signal output from the comparator circuit and, a load circuit connected in series to the comparator circuit between the column signal line and a ground terminal, wherein the load circuit is configured as a common load device of the plurality of pixel sensors connected to the column signal line and the comparator circuit.

Image sensor and image processing apparatus using the same

Disclosed herein are a server duplication system and method and a storage medium storing a server duplication computer program. The server duplication system includes a primary server including a hypervisor including a hypervisor-based fault tolerance module and a first file system virtual machine (FS VM), and a first standby server including a hypervisor including a hypervisor-based fault tolerance module that exchanges data with a fault tolerance module provided on the hypervisor of the primary server and duplicates the primary server. The first FS VM provides a first file system that is shared by a user virtual machine (USER VM), and a buffer cache that is used in conjunction with the first file system is provided on virtual memory. The first FS VM is duplicated into the standby server using the hypervisor-based fault tolerance module of the primary server and the hypervisor-based fault tolerance module of the standby server.

Hypervisor-based server duplication system and method and storage medium storing server duplication computer program

A binary complementary metal-oxide-semiconductor (CMOS) image sensor includes a pixel array and a readout circuit. The pixel array includes at least one pixel having a plurality of sub-pixels. The readout circuit is configured to quantize a pixel signal output from the pixel using a reference signal. The pixel signal corresponds to sub-pixel signals output from sub-pixels, from among the plurality of sub-pixels, activated in response to incident light.

Binary CMOS image sensors, methods of operating same, and image processing systems including same

According to example embodiments, a photodiode includes a photoelectric layer on a first electrode, a second electrode on the photoelectric layer, and a first phosphorescence layer on the second electrode.

PhotoSensor and photodiode therefor

Growing community of inventors

Seongnam-si, South Korea

Kwang-Hyun Lee