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

A laser scanning module and method for shielding laser interference

A laser scanning and laser technology, applied in the field of barcode recognition, can solve problems affecting laser scanning optical imaging and other issues

Active Publication Date: 2021-04-13
SHENZHEN IDATA TECH CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above technical problems, the embodiment of the present invention provides a laser scanning module and its method for shielding laser interference, so as to solve the problem that the indication pattern formed by the laser of the existing laser scanning module affects the optical imaging of laser scanning

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 laser scanning module and method for shielding laser interference
  • A laser scanning module and method for shielding laser interference
  • A laser scanning module and method for shielding laser interference

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The embodiments of the present invention, and all other embodiments obtained by those skilled in the art without creative efforts, all belong to the protection scope of the present invention.

[0030] Please also see figure 2 and image 3 , during image acquisition, the image duration of one frame (that is, one frame period T) is divided into exposure time TOE and data sampling time ST. During the sampling time ST, the image data is taken out from the CMOS control chip and output, and the image output waveform is PO. In the prior art, since the laser has the characteristics of high energy and concentration, it will strongly interfere with the imaging of the barcode,...

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 embodiment of the present invention discloses a laser scanning module and a method for shielding laser interference thereof. The laser scanning module is connected to external equipment, and the laser scanning module includes a laser, a CMOS control chip and a control circuit; the CMOS control chip outputs a frame exposure signal , the external device outputs a power switch signal; the control circuit controls the power supply state of the laser according to the power switch signal, and also controls the switch of the laser according to the frame exposure signal to synchronize with the frame of the barcode image read by the laser scanning module. By synchronizing the switch of the laser with the frame, a normal indication can be formed, thereby eliminating the influence of the indication pattern formed by the laser, and improving the performance of the laser scanning module in reading barcode symbols.

Description

technical field [0001] The invention relates to the technical field of barcode identification, in particular to a laser scanning module and a method for shielding laser interference. Background technique [0002] When the existing laser scanning module reads the barcode, such as figure 1 As shown, the scanning module 4 collects images in the CMOS imaging area 1 (scanning area), and the indicating pattern 5 formed by the laser is projected onto the barcode 3 to scan the area 2 indicated by the laser. Because the laser has the characteristics of high energy and concentration, if it is not processed, the guide pattern 5 formed by it will change the light and shade on the surface of the barcode 3, which will affect the optical imaging of the CMOS of the scanning module 4, and cause the image collected by the scanning module 4 to form a partial Overexposure, thereby affecting the correct recognition of the barcode symbols by the scanning module 4 . Contents of the invention ...

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): G06K7/10
CPCG06K7/10287G06K7/10544
Inventor 王冬生姜涛张立静陈卫
Owner SHENZHEN IDATA TECH CO LTD