Novel key and method based on bar code identification principle

Abstract

The invention discloses a novel key and method based on a bar code identification principle. The novel key consists of two parts, namely a key identifier and a keyboard, wherein the key identifier comprises a camera, an infrared transmitting tube, a button, a finger stall, a wireless transmitting module, a shell and a processor; key bar codes and horizontal black lines positioned at the upper and lower ends of the key bar codes are arranged on the keyboard; and the key identifier identifies obtained key numbers by virtue of the key bar codes. A user wears the key identifier on the finger through the finger stall, when the user puts the key identifier on the key bar codes and presses the button down, the camera acquires an image in assistance of emergent light of the infrared transmitting tube, the key bar codes are positioned by the horizontal black lines at the upper and lower ends of the key bar codes, and then information of the key bar codes are read; and the processor processes the information to obtain the key numbers and transmits the key numbers through the wireless transmitting module for subsequent use. Therefore, the novel key is realized.

Description

technical field [0001] The invention relates to a novel key, in particular to a novel key and method based on the principle of bar code identification. [0002] Background technique [0003] Existing keyboard input devices are roughly divided into the following types: [0004] 1. The traditional mechanical keyboard, this kind of keyboard is realized by hardware circuit, and the corresponding circuit is connected when the button is pressed, so there are many internal electronic circuits and the volume is large. There are disadvantages such as inconvenient to carry, complex internal electronic circuits, prone to failure, poor waterproof performance, and relatively high requirements for the use environment. [0005] 2. For example, the patent "Multifunctional Remote Controller" with application number CN101923774A, this type of button is designed as a remote control mode, and the button part is a remote controller. Its disadvantage is that the remote control takes up a large...

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Problems solved by technology

[0007] 4. Keyboard based on image recognition and laser projection: For example, the patent "projection virtual keyboard device" with application number CN02132177.9, this kind of keyboard is produced by laser projection using holographic technology, and requires that the light background should not be too bright, and the keyboard feels relatively soft when typing Poor, especially there are disadvantages such as high cost

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