US 2009/0264787 A1Published application

Communication and Device Control System Based on Multi-Frequency, Multi-Phase Encoded visual Evoked Brain Waves

OwnerPo-lei Lee, Kuo-kai Shyu +3inventors

InventorsPo-lei Lee, Kuo-kai Shyu, Chi-hsun Wu, Jyun-jie Sie, Ming-huan Lee

Life of this patent

Estimating the term…

Loading patent…

Abstract

In a driving control system actuated by visual evoked brain waves which are induced by a multi-frequency and multi-phase encoder, and a corresponding method configured for analyzing brain wave signals in order to control at least one peripheral equipment, the driving control system includes an optical flash generating device, a brain wave signal measurement device, a signal processing and analyzing device and a control device. The optical flash generating device is configured for generating at least one flash light source by a multi-frequency and multi-phase encoder. The brain wave signal measurement device is configured for measuring a brain wave signal inducing by a user gazing the flash light source. The signal processing and analyzing device is configured for calculating the frequency and the phase of the brain wave by a mathematical method, and analyzing whether the frequency and the phase of the brain wave same to the those of the optical flash generating device. The control device is configured for sending out the frequency and the phase analyzed by the signal processing and analyzing device and same to those of the optical flash generating device so as to control at least one peripheral equipment.

Claims14

Dependent claims

A driving control system actuated by visual evoked brain waves which are induced by a multi-frequency and multi-phase encoder, the driving control system being configured for use of brain wave signals to control at least one periphery equipment, the driving control system comprising:

an optical flash generating device configured for generating at least one flash light source by a multi-frequency, multi-phase encoder, the optical flash generating device including a programmable chip and at least one visible light emitting element arranged therein, the programmable chip being configured to generate multi-frequency, multi-phase time sequence for a multi-channel flash emitter, and driving and flashing the at least one visible light emitting element by a multi-channel phase angle delay time;
a brain wave signal measurement device configured for measuring a brain wave signal induced by a user gazing at the multi-channel light emitting element, the brain wave signal measurement device including a brain measurement system, a signal amplifier and an analog-to-digital converter arranged therein, the brain measurement system being configured for measuring the brain wave signal, the amplifier being configured for amplifying the brain wave signal measured by the brain measurement system, and the analog-to-digital converter being configured for digitizing the brain wave signal amplified by the amplifier;
a signal processing and analyzing device configured for receiving the brain wave signal from the brain wave signal measurement device, calculating frequency and phase of the brain wave signal by mathematical method, and analyzing whether the frequency and the phase of the brain wave match to those of the optical flash generating device;
and
a control device configured for sending out commands according to an analyzed result made by the signal processing and analyzing device, that the frequency and the phase matching to those of the optical flash generating device, to control the at least one peripheral equipment.

2 more elements

A method used into a driving control system for visual evoked brain wave by multi-frequency and multi-phase encoder, the method being configured for using brain wave signals to control at least one periphery equipment, the method employing a signal processing and analyzing device of the driving control system to perform following steps:

receiving a multi-channel phase angle delay time generated by a programmable chip with a multi-frequency and multi-phase encoder, the programmable chip transmitting the multi-channel phase angle delay time to at least one light emitting element for driving and flashing the at least one light emitting element;
receiving brain wave signal sent out from the brain wave signal measurement device, and forming a signal waveform as template based on the brain wave signal when a user initially gazes at the at least one light emitting element;
removing the brain wave signal with no corresponding frequency by a narrow band-pass filter, averaging superposedly the brain wave signal sent out from the brain wave signal measurement device, and comparing the brain wave signal with the template signal;
and
transmitting control commands of the brain wave signal to a control device for controlling the at least one periphery equipment, if the brain wave having both the same frequency and phase matched to those of the at least one light emitting element.

2 more elements

Dependencies are inferred from the claim text.