A text input method and device based on a virtual keyboard

Abstract

The invention provides a character input method and device based on a virtual keyboard. The method comprises the following steps that: S1: automatically identifying a virtual keyboard area and key positions, and dividing the virtual keyboard area into a preset quantity of subareas, wherein each subarea flickers at different frequencies; S2: receiving a first electroencephalogram signal sent from electroencephalogram collecting and processing equipment; S3: processing and analyzing the first electroencephalogram signal, and determining a first subarea in each subarea according to a processing and analysis result as the glaring area of a user; S4: repeating S1 to S3, segmenting the first subarea, and determining the first subarea as a triggering key position until the amount of the virtual keys corresponding to the first subarea is smaller than a preset threshold value; S5: when the amount of the virtual keys corresponding to the first subarea is 1, determining the virtual key as the target virtual key of the user; and S6: executing an instruction for clicking the target virtual key, and inputting a character corresponding to the target virtual key. The method is convenient in operation, and both hands of the user are liberated.

Description

technical field [0001] The invention relates to the technical field of human-computer interaction, in particular to a text input method and device based on a virtual keyboard. Background technique [0002] There are three stages in the development of human-computer interaction, which are command line interface interaction stage, graphical user interface interaction stage and natural and harmonious human-computer interaction stage. In the interactive stage of the command line interface, the computer user is regarded as the operator. The computer generally responds passively to the input information, and the operator mainly inputs data and command information through the keyboard. Obviously, this human-computer interface interaction method lacks naturalness. sex. Graphical user interface interaction phase relies on menu selection and interactive components, but repetitive menu selection will cause inconvenience to users. The stage of natural and harmonious human-computer int...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a text input method and device based on a virtual keyboard, which is used to solve the problem of inconvenient operation of the existing text input method

Images