Character input device based on eye tracking and P300 electrical potential of the brain electricity

A technology of eye tracking and character input, which is applied in the input/output process of data processing, the input/output of user/computer interaction, psychological devices, etc. And other issues
CN101515199AInactive Publication Date: 2009-08-26BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING INSTITUTE OF TECHNOLOGYGY
Publication Date
2009-08-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a character input device based on eye tracking and P300 electrical potential of the brain electricity, which comprises a video camera array, an eye tracking module, a keyboard module, a brain electricity signal analyzing module and a system control module. The device combines the high spatial resolution of the eye tracking and the high time resolution of the P300 electrical potential detection of the brain electricity, firstly, determines an area where the keyboard is according to visual lines of a user, and then controls random flickers of all character keys in the area, arouses the P300 electrical potential of the brain electricity of the user, determines the character keys which the user wants to select according to the generation time of the electrical potential and the visual line location, thus realizing the input operation of characters. The invention provides a new human-machine interaction technique which does not need manpower to be involved and is not affected by the noise of the environment for use.
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Description

technical field

[0001] The invention relates to a computer peripheral device for character input, in particular to a character input device which combines eye-tracking technology and electroencephalogram analysis technology. Background technique

[0002] Human-computer interaction (Human-Computer Interaction, HCI) is a technology to study human-computer interaction and its research purpose is to use all possible information channels for human-computer communication and improve the naturalness and efficiency of interaction. Traditional character input is performed by manual operation of the keyboard, mouse or gestures. In order to free hands and realize character input independent of human hands, people have invented character input methods such as voice technology, eye tracking technology, and EEG potential detection technology. . The biggest limitation of voice technology is its susceptibility to background noise. The present invention is a character input technology comb...

Claims

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