Samsung Electronics Co., Ltd.

Woong Joo

Kyung-Min Kim

Moo Young Kim

Kyoung Min Koh

Hyeok Jong Lee

Hyuk Jun Oh

KyoungMin Koh

Hee Sung Chae

Sung Yong Kim

Mira Lee

Seung Hoon Jung

Mi Ra Lee

Shin Hyoung Kim

Kwang Hyun Lee

Kwang-Hyun Lee

Moo-young Kim

Kyoung-Min Koh

Jaehoon Jun

Jae Cheol Yun

Jae Jin Jung

Ji Yong Kim

Ju Ha Kim

Seok Yong Park

Hee Sung Shim

Kyung Ha Kim

Hyukbin Kwon

An analog-digital converter includes a count code generator to receive a code generation clock signal from a clock signal generator and to output a count code according to the code generation clock signal, a latch to latch the count code, an operating circuit to generate a count value of the count code and to output a digital signal based on the count value, and a transfer controller to transfer the count code from the latch to the operating circuit. The transfer controller determines whether to transfer the count code according to a logic level of a count enable clock signal generated from the clock signal generator.

Image sensor and method of operating an image sensor

Disclosed is a circuit which includes a first amplifier that generates a first output signal by comparing a first pixel signal corresponding to a first conversion gain and a first ramp signal and generates a second output signal by comparing a second pixel signal corresponding to a second conversion gain and a second ramp signal, and a second amplifier that generates a third output signal based on the first output signal and generates a fourth output signal based on the second output signal, the first conversion gain is higher than the second conversion gain, and a first power current of the first amplifier when the first pixel signal and the first ramp signal are compared is different from a second power current of the first amplifier when the second pixel signal and the second ramp signal are compared.

Analog-to-digital converting circuit for optimizing dual conversion gain operation and operation method thereof

Analog-digital converter and image sensor including thereof

An electronic circuit includes a unit pixel, a first clamp circuit, and a second clamp circuit. The unit pixel outputs a voltage having an output voltage level at a first output voltage level in a first time interval and at a second output voltage level in a second time interval different from the first time interval. The first clamp circuit is configured to clamp the output voltage level from the unit pixel to a first voltage level responsive to the first output voltage level being not greater than the first voltage level in the first time interval. The second clamp circuit is configured to clamp the output voltage level from the unit pixel to a second voltage level responsive to the second output voltage level being not greater than the second voltage level in the second time interval.

Image sensor and electronic circuit included therein

A pixel driving circuit of an image sensor includes a first transistor to transmit an output signal of the photodiode to a floating diffusion node, a second transistor to reset a voltage of the floating diffusion node to a pixel voltage, a third transistor to output charges in the floating diffusion node, a fourth transistor to pre-charge an output node of the third transistor, a fifth transistor to transmit the charges in the floating diffusion node to a first node, a sixth transistor to transmit the pixel voltage to a second node, a seventh transistor to output charges in the second node, an eighth transistor to output an output signal of the seventh transistor to a column line, and a ninth transistor to output an output signal of the third transistor to the column line.

Image sensor and method of driving the same

Provided are image sensors. An image sensor includes a pixel array comprising pixels configured to output signal voltages, each of the pixels comprising first and second photodiodes, first and second transfer transistors connected to the first and second photodiodes, respectively, and a floating diffusion node to which the first and second transfer transistors are connected; a ramp voltage generator configured to generate a ramp voltage that decreases with a slope according to a ramp clock to have a first gain; a correlation double sampler (CDS) configured to compare the ramp voltage with the signal voltages to output a comparison signal; a counter configured to count the comparison signal according to a counter clock to output a digital signal; and a digital scaling unit configured to scale the digital signal to have a second gain.

Image sensor

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

An image sensor includes a pixel array including a plurality of pixels, a row driver configured to control an operation of each of the plurality of pixels, a voltage supply line connected to a reset transistor included in each of the plurality of pixels, and a voltage supply circuit which detects a signal from the voltage supply line and supplies one of a first voltage and a second voltage to the voltage supply line based on the signal from the voltage supply line.

Image sensor for supplying a different voltage to pixels based on illumination change, operation method thereof, and device having an image sensor

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Seoul, South Korea

Woong Joo