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

Method for reading imaging device

An imaging device and a technology for reading operations, which are applied in the directions of image communication, components of color TVs, components of TV systems, etc., and can solve the problems of prolonged reading time of detectors.

Inactive Publication Date: 2015-09-23
TRIXELL S
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main disadvantage of correlated double-sampled readout is the extended detector readout time

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
  • Method for reading imaging device
  • Method for reading imaging device
  • Method for reading imaging device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] figure 1 A matrix with two rows and two columns is shown schematically to simplify understanding. Four pixels are formed, one pixel at the intersection of a row and a column. Obviously, real matrices are usually much larger and have a large number of rows and columns.

[0022] Each pixel comprises a photosensitive area shown here by a photodiode D and an electronic processing circuit formed by three transistors T1, T2 and T3. exist figure 1 In , the reference number of the photodiode D and the reference numbers of the three transistors are followed by two coordinates (i,j), the row rank may be considered as i and the column rank as j. Indeed, such pixels may include other components, notably other transistors. This is why this pixel is also called a 3T pixel, since it has at least three transistors, the function of each of which will be described below.

[0023] In general, it is known to realize a matrix of pixels comprising transistors implementing an additional ...

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 concerns a method for reading an imaging device intended for capturing images in a detector comprising a high number of photosensitive points called pixels organised into a matrix. The pixels of a given column are linked to a column conductor (Col(j)) that makes it possible to consecutively read photosignals acquired by the pixels of the column, the method consisting, for each of the pixels, of carrying out a correlated double sampling read phase, the read phase comprising an operation of resetting the pixel (11, 15) followed by two reading operations (12, 14, 16, 18), the first without a photosignal, and the second with the photosignal. According to the invention, for the pixels of a given column, three steps are carried out in succession: 1 a first of the operations of reading (14; 72) the pixel of a first row (I), 2 one of the operations of reading (18; 76) a second row (1+1), 3 a second of the operations of reading (12; 74) the pixel of the first row (I).

Description

technical field [0001] The invention relates to a method for reading an imaging device for capturing an image in a detector comprising a large number of light-sensitive points called pixels, usually organized in a matrix. Background technique [0002] In a detector, a pixel represents the basic sensitive element of the detector. Each pixel converts the electromagnetic radiation it receives or the charge flow of a photoconductor into an electrical signal. The electrical signals originating from the different pixels are collected during the matrix-read phase and then digitized in such a way that they can be processed and stored in order to form an image. A pixel is usually formed by a photosensitive area that delivers an electrical current of charge according to the flow of photons it receives, and forms the electronic circuitry for processing this electrical current. The photosensitive area typically includes a photosensitive element or photodetector, which may be, for exam...

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 Applications(China)
IPC IPC(8): H04N5/341H04N5/353H04N5/374H04N5/378
CPCH04N5/374H04N5/3532H04N5/341H04N5/378H04N25/40H04N25/531H04N25/76H04N25/75
Inventor B·博塞L·沙里耶
Owner TRIXELL S