US 2020/0053307 A1 · IMAGE SENSOR CHIP THAT FEEDS BACK VOLTAGE AND TEMPERATURE INFORMATION, AND AN IMAGE PROCESSING SYSTEM HAVING THE SAME

Abstract

An image sensor chip includes an internal voltage generator for generating internal voltages using an external voltage received at a first terminal of the image sensor chip, a temperature sensor for generating a temperature voltage, a selection circuit for outputting one of the external voltage, the internal voltages, and the temperature voltage, a digital code generation circuit for generating a digital code using an output voltage of the selection circuit, and a second terminal for outputting the digital code from the image sensor chip.

Claims17

Dependent claims

An image sensor chip, comprising:

an active pixel array;
and
a column analog digital conversion block comprising a dummy analog-to-digital converter (ADC) and a first group of ADCs and, the first group of ADCs configured to convert correlated double sampled pixel signals received from the active pixel array into first digital signals,
wherein the dummy ADC is configured to convert a temperature voltage into a second digital signal.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

16/658,599Filed 21 Oct 2019

Priority

KR 10-2016-006299523 May 2016

Published

13 Feb 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

H03M 1/12
Analogue/digital conversion; Digital/analogue conversion: analogue/digital converters
H03M 1/0845
Of noise: of power supply variations, e.g. ripple
H03M 1/181
Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging: in feedback mode, i.e. by determining the range…
H03M 5/02
Conversion of the form of the representation of individual digits: conversion to or from representation by pulses

Image sensor chip that feeds back voltage and temperature information, and an image processing system having the same

Life of this patent

Image sensor chip that feeds back voltage and temperature information, and an image processing system having the same

Life of this patent

Abstract

Claims17