Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for controlling the exposure time of a cmos image sensor

A control method and exposure time technology, applied in the field of image sensors, can solve the problems of increasing the complexity of matrix wiring, and achieve the effects of reducing the complexity of hardware circuits, improving the amplitude of useful signals, and improving the dynamic range and signal-to-noise ratio.

Active Publication Date: 2022-05-31
炬佑智能科技(苏州)有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the magnification or exposure time of each pixel is not uniform, then the huge hardware support required to store this information and realize single-point control, the complexity of the matrix connection will also increase geometrically

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
  • A method for controlling the exposure time of a cmos image sensor
  • A method for controlling the exposure time of a cmos image sensor
  • A method for controlling the exposure time of a cmos image sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Below in conjunction with FIG. 3, the pixel exposure embodiment proposed by the application implementation will be described. In this embodiment, the original

[0028] Figure 4a, Figure 4b shows the topology circuit and driving timing of the pixel unit. When rst is high, the pixel is accumulated before

[0029] The pixel matrix of the CMOS image sensor in the embodiment of the present application can realize each pixel in the matrix.

[0031] The exposure time control method of the embodiment of the present application can be applied to the image sensor that requires a high response speed

[0032] The present invention also provides a computer storage medium, the computer storage medium comprising a computer program, the computer

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 proposes a method for controlling the exposure time of a CMOS image sensor. The CMOS image sensor includes a pixel matrix, and its exposure method includes: dividing the number of exposures N of the pixel matrix into several sections, exposing in sections and reading charge information once after each section of exposure is completed; if the amount of charge accumulated by the pixel exceeds If the set threshold is set, then the pixel is marked. When all the pixels have finished reading the information, the exposure of the next segment will start until the exposure of the several segments is completed. The stored charge information becomes a digital signal output after reading, amplifying, and analog-to-digital conversion; it enters the next working cycle. By marking each pixel, the method effectively improves the useful signal amplitude of all pixels on the premise of ensuring that each pixel in the pixel array is not exposed, thereby improving the dynamic range and signal-to-noise ratio of the image sensor.

Description

A method for controlling exposure time of CMOS image sensor technical field The present invention relates to the field of image sensor, be specifically related to a kind of control method of exposure time of CMOS image sensor Law. Background technique [0002] In recent years, the application range of image sensors has become wider and wider. In addition to conventional applications such as telescopes or digital cameras In many fields, such as security monitoring, face recognition, and three-dimensional image modeling, image sensors have also begun to be used. Mutually Compared with traditional CCD image sensors, CMOS image sensors (CIS) are increasingly mature due to the development of semiconductor process technology. The advantages of low power consumption and high integration are becoming more and more obvious. [0003] A CMOS image sensor is essentially a matrix composed of a large number of single-point pixels. The structure of a single-point pixel is shown in...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/235H04N5/355H04N5/374
CPCH04N23/741H04N25/59H04N25/76
Inventor 潘扬李丹
Owner 炬佑智能科技(苏州)有限公司