A data input method, system and device for fixed-focus scanning

Abstract

The invention discloses a data input method for fixed-focus scanning, comprising: displaying the information to be scanned on the information display device; displaying the horizontal frame line of the information to be scanned on the information display device; connecting the bottom edge of the scanning device with the information The plane of the display device is fixed at an angle of 0°‑90°, and the bottom edge of the scanning device is aligned with the horizontal frame line of the information to be scanned; the camera of the scanning device scans the information to be scanned; Input of information. Beneficial effects of the present invention: by designing the horizontal frame line of the information to be scanned, the scanning can be completed directly by aligning the bottom edge of the scanning device with the horizontal frame line, which simplifies the operation and is convenient and easy; because the horizontal frame line of the information to be scanned , and the design of the cutting angle at the bottom edge of the scanning device, the horizontal and vertical distances between the camera of the scanning device and the information to be scanned are very precisely fixed, which improves the accuracy of data scanning; it is suitable for any type of information that needs to be scanned The input scene has good versatility.

Description

technical field [0001] The present invention relates to the technical field of information security, in particular to a data input method, system and device for fixed-focus scanning. Background technique [0002] QR code is a barcode technology invented by Japan in the 1970s to record data information in graphics. Compared with the widely used one-dimensional barcode, the two-dimensional code has a larger information storage capacity, so it is widely used in many fields such as commodity traceability, logistics tracking, identity authentication, and data anti-counterfeiting. With the popularization of my country's mobile Internet, scanning QR codes with mobile phones to obtain information can avoid tedious input, so it is favored by mobile phone users. [0003] Currently, two-dimensional code scanning devices are generally smart phones, two-dimensional code scanners, and PDAs. When a smart phone scans a two-dimensional code, it aligns the two-dimensional code with the camer...

AI Technical Summary

Problems solved by technology

Although this method solves the problem of inaccurate focus and time-consuming to a certain extent, it also introduces a new problem: the focusing light of the scanning device and the display light of the information display device will interfere with each other, resulting in the distortion of the QR code. Poor recognition rate affects the time and accuracy of QR code recognition to a certain extent

[0004] In addition, for the small scanning devices that appear today, such as dedicated information processing devices that provide encryption, etc., a fixed-focus infrared camera is used, and due to the limited size of the device, the scanned image cannot be displayed on the display screen, and the user cannot know the scanning status and how to adjust it. Angle, unable to fix the horizontal and vertical distance, thus greatly affecting the scanning time and scanning effect

In this case, how to quickly achieve accurate focus scanning has become one of the main factors that limit the versatility and performance of such devices

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