Device and electronic product for realizing virtual keyboard and implementation method thereof

Abstract

The invention provides a device and an electronic product for realizing a virtual keyboard, and an implementation method thereof, which are applicable to the field of electronic technology. The device comprises a projection unit for projecting the image of the virtual keyboard; a ray detection unit for detecting and reflecting rays from two points so as to obtain the incidence angle of two corresponding reflected rays; and a processing unit for determining the input key assignments and outputting the key assignments according to the incidence angle of the reflected rays and the projected image of the virtual keyboard as well as the incidence angle of the two reflected rays obtained by the ray detection unit. In the embodiment of the invention, the processing unit determines and outputs the input key assignments according to the corresponding relationship between the incidence angle of the reflected rays and the key assignments at the projected image of the virtual keyboard as well as the incidence angle of the two reflected rays obtained by the ray detection unit; therefore, the invention can realize the virtual keyboard, which has a low hardware cost, and can be used in various electronic products with a request for information input.

Description

technical field [0001] The invention belongs to the field of electronic technology, and in particular relates to a device for realizing a virtual keyboard, an electronic product and a realization method thereof. Background technique [0002] Nowadays, people's work and life are inseparable from various electronic products, most of which involve information input, and electronic products such as mobile phones and PDAs cannot be equipped with more buttons due to area limitations, which affects the speed of user input information ; And other situations such as hospitals and pharmaceutical factories that cannot use physical keyboards due to restrictions such as the environment have also brought inconvenience to users for inputting information. [0003] In order to solve these limitations, the prior art provides a virtual keyboard device, which projects a virtual keyboard image on the surface of any object through a keyboard projection device, and the user directly "touches" the ...

AI Technical Summary

Problems solved by technology

[0004] To sum up, the existing technical solutions for realizing the virtual keyboard require a photographic device with high imaging quality, and the cost is relatively high; moreover, complex calculations need to be performed on the captured images to obtain key value input, and complex calculations mean that more powerful CPU support, such that further increases manufacturing cost

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