Supercharge Your Innovation With Domain-Expert AI Agents!

Compensation circuit and control method thereof as well as image sensor circuit

A technology for compensating circuits and capacitors, which is applied in image communication, television, electrical components, etc., can solve the problems of complex and cumbersome black level compensation technology, achieve the effect of saving chip area and power consumption, and simple structure

Inactive Publication Date: 2015-03-04
BRIGATES MICROELECTRONICS KUNSHAN
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The problem solved by the present invention is that the existing black level compensation technology is relatively complex and cumbersome

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Compensation circuit and control method thereof as well as image sensor circuit
  • Compensation circuit and control method thereof as well as image sensor circuit
  • Compensation circuit and control method thereof as well as image sensor circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0042] Such as figure 2 As shown, the embodiment of the present invention provides a compensation circuit, including: an amplifier Amp, a first capacitor C1 , a second capacitor C2 , a third capacitor C3 , a first switch K1 , a comparator COMP and a counter 1 .

[0043] The negative phase input terminal of the amplifier Amp is connected to the first terminal of the first capacitor C1, the first terminal of the second capacitor C2, the first terminal of the third capacitor C3 and the first terminal of the first switch K1, the The output terminal of the amplifier Amp is connected to the second terminal of the first capacitor C1, the second terminal of the first switch K1 and the negative input terminal of the comparator COMP. The output te...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a compensation circuit and a control method thereof as well as an image sensor circuit. The compensation circuit comprises an amplifier, a first capacitor, a second capacitor, a third capacitor, a first switch, a comparator and a counter, wherein the negative phase input end of the amplifier is connected with a first end of the first capacitor, a first end of the second capacitor, a first end of the third capacitor and a first end of the first switch; the output end of the amplifier is connected with a second end of the first capacitor, a second end of the first switch and the negative phase input end of the comparator; the output end of the comparator is connected with the input end of the counter. According to the technical scheme, the problems of relatively bright images and relatively dark images can be solved; a bidirectional black level compensation technology is provided; the compensation circuit is simple in structure; the area and the power consumption of a chip are reduced.

Description

technical field [0001] The invention relates to a compensation circuit, its control method and an image sensor circuit. Background technique [0002] The purpose of the image sensor is to convert the captured image (optical signal) into an electrical signal for long-distance playback. There are mainly two types of metal oxide semiconductor (CMOS) and charge-coupled device (CCD), which are widely used. [0003] The pixels of the image sensor transfer the charge converted from the light signal to the storage node, and then output it through the source follower. In order to weaken the noise of the source follower, each pixel has to output the signal twice through the bit line, one is the reset level, and the other is the signal level based on the reset level. When the signal level is subtracted from the reset level, a signal with low-frequency noise can be obtained. figure 1 It is an existing image signal reading circuit, including: an amplifier Amp, a first capacitor Cf, a s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04N5/361H04N5/374
Inventor 付园园任张强徐新楠
Owner BRIGATES MICROELECTRONICS KUNSHAN
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com