Samsung Electronics Co., Ltd.

Dongguk University Industry-academic Cooperation Foundation

Jae Jung Park

Ji Yong Kim

Kyu Ik Cho

Dae Yun Kim

Min Kyu Song

Dong Jae Han

Jae Young Bae

Gye Hun Choi

Bo Keun Lim

An image sensor and an operating method thereof are provided. The image sensor comprises a voltage generator configured to receive a reference voltage and generate an operating voltage, an analog-to-digital converter (ADC) circuit configured to receive the operating voltage and output a digital code based on the operating voltage, and processing circuitry configured to receive the digital code, and calculate a settling time at which the operating voltage was stabilized based on the digital code and a desired settling threshold voltage value.

Image sensor and operating method thereof

An image sensor is provided. The image sensor may include an active pixel electrically connected to a column line and configured to provide an output voltage to a pixel node and a bias circuit electrically connected between the pixel node and an earth terminal, and in which a first current flows through a first line electrically connected to the pixel node, wherein the bias circuit includes a first variable capacitor electrically connected to a power supply voltage, and a second variable capacitor electrically connected to the earth terminal, and the magnitude of the first current may be configured to vary based on a ratio of a capacitance of the first variable capacitor to a capacitance of the second variable capacitor. The output voltage may be configured to be adjusted based on the magnitude of the first current.

Image sensors including ripple voltage compensation

An image sensor may include a comparator including a first input terminal configured to receive a reset signal, a second input terminal configured to receive an image signal, a third input terminal configured to receive a ramp signal configured to ramp in one direction, and an output terminal. The comparator may further include a switch circuit including a plurality of switches. The comparator may be configured to compare the reset signal with the ramp signal and output a first comparison signal through the output terminal according to a first arrangement of the switches in a reset phase and the comparator may be configured to compare the image signal with the ramp signal and output a second comparison signal through the output terminal according to a second arrangement of the switches in an image phase.

Image sensors, methods of operating the same, and image processing systems including the same

Growing community of inventors

Hwaseong-si, South Korea

Jae Jung Park