Bar code reading device

A bar code reading and bar code technology, applied in the field of bar code reading optical engine, can solve the problem that the speed of reading bar code is not fast enough, and achieve the effect of fast decoding speed, enhancing field of view, and improving decoding rate

Inactive Publication Date: 2015-04-22
FUJIAN NEWLAND AUTO ID TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is that there are many barcode reading modules in the prior art, only one group of barcode reading modules work, and the speed of reading barcodes is not fast enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] Such as Figure 1-6 Shown is a preferred embodiment of a barcode reading device of the present invention. The barcode reading device includes: a decoding trigger module 1; a control coordination module 2; at least two barcode decoding engines; at least one aiming light source 3; at least one illuminating light source 4;

[0098] in:

[0099] The decoding trigger module 1 sends an instruction to read the barcode to the control coordination module. Such as Image 6 As shown, the decoding trigger module 1 can be triggered by a key. The decoding trigger module can also be triggered by sensor sensing.

[0100] The control coordination module 2, for example, can adopt chips such as STM32 of STMicroelectronics, and after receiving the reading barcode instruction, send work instructions to at least two barcode decoding engines according to the order of setting, and control the lighting source and aiming light source to start, receive The barcode decoding data sent by the b...

Embodiment 2

[0121] Such as Figure 9 As shown, on the basis of the above-mentioned embodiment 1, the first decoding chip 113 is the same as the second decoding chip 123, and the decoding chip further includes:

[0122] The scanning module 21 generates scanning coordinates corresponding to address bits in an address storage space of an external data memory (not shown). The scanning module 21 scans the barcode image;

[0123] The boundary identification module 22 reads the barcode image according to the scanning coordinates, and calculates the read image pixel points to obtain the bar-space boundary points of the barcode image;

[0124] The direction identification module 23 calculates and obtains the direction of the barcode according to the boundary point of the bar code acquired by the boundary identification module;

[0125] The bar-space boundary processing module 24 processes the barcode image according to the barcode direction, so as to obtain the bar-space boundary in the barcode ...

Embodiment 3

[0136] On the basis of Embodiment 1, the decoding chip is different from the second decoding chip, and the first decoding chip, such as Figure 9 As shown, further includes:

[0137] The scanning module 21 generates scanning coordinates corresponding to address bits in an address storage space of an external data memory (not shown). The scanning module 21 scans the barcode image;

[0138] The boundary identification module 22 reads the barcode image according to the scanning coordinates, and calculates the read image pixel points to obtain the bar-space boundary points of the barcode image;

[0139] The direction identification module 23 calculates and obtains the direction of the barcode according to the boundary point of the bar code acquired by the boundary identification module;

[0140] The bar-space boundary processing module 24 processes the barcode image according to the barcode direction, so as to obtain the bar-space boundary in the barcode image;

[0141] The sym...

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PUM

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Abstract

The invention provides a bar code reading device which comprises at least two bar code decoding engines. The at least two bar code decoding engines have two depths of focus to be suitable for bar codes of different sizes. Under the triggering of a decoding triggering mode, bar code images are collected according to the set sequence, and reading and decoding are conducted. After one bar code decoding engine successfully decodes the bar codes and is the first to successfully read and decode the bar codes, the decoding processing of other bar code decoding engines is automatically stopped, and the bar code reading and decoding speed is increased.

Description

technical field [0001] The invention relates to a barcode reading optical engine, in particular to a barcode reading device. Background technique [0002] Barcode (referred to as barcode) can be divided into one-dimensional barcode and two-dimensional barcode. One-dimensional barcode is a mark composed of a set of regularly arranged bars, spaces and corresponding characters. "Bar" refers to the part with low reflectivity to light. "Void" refers to the part with high reflectivity to light, and the data composed of these bars and spaces expresses certain information. Two-dimensional barcode is a new generation of barcode technology that records data symbol information in a black and white rectangular matrix distributed in a plane (two-dimensional direction) according to certain rules; two-dimensional barcode can be divided into stacked two-dimensional barcode and Matrix 2D barcode. The stacked two-dimensional barcode is formed by stacking multiple short-cut one-dimensional b...

Claims

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Application Information

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IPC IPC(8): G06K7/10
Inventor 王锦沈锦兴
Owner FUJIAN NEWLAND AUTO ID TECH CO LTD
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