US 11,868,530 B2
Accurate control method of visual stimuli for brain-computer interface
Zhihua Huang, Jinjiang (CN); and Yingjie Wu, Jinjiang (CN)
Appl. No. 17/435,172
Filed by FUZHOU UNIVERSITY, Jinjiang (CN)
PCT Filed Jan. 28, 2021, PCT No. PCT/CN2021/074084
§ 371(c)(1), (2) Date Aug. 31, 2021,
PCT Pub. No. WO2022/001098, PCT Pub. Date Jan. 6, 2022.
Application 17/435,172 is a continuation of application No. PCT/CN2021/074084, filed on Jan. 28, 2021.
Claims priority of application No. 202010629983.0 (CN), filed on Jul. 3, 2020.
Prior Publication US 2023/0136433 A1, May 4, 2023
Int. Cl. G06F 3/01 (2006.01); G06T 1/20 (2006.01); G06F 3/14 (2006.01)
CPC G06F 3/015 (2013.01) [G06F 3/14 (2013.01); G06T 1/20 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An accurate control method of visual stimuli for a brain-computer interface, being implemented by a software system consisting of a generator, an actuator and a controller, functions and correlations of which are as follows:
the generator, a module running on a CPU, interacts with an experimenter to receive accurate visual stimuli parameters, and automatically generates an image sequence as required by the parameters according to a refresh rate of a display; the actuator, a module running on a GPU, has two interfaces “start” and “stop” that both support asynchronous calls; when the interface “start” is called, the actuator starts running to show the image sequence, generated by the generator, on a screen frame by frame at run time; and when the interface “stop” is called, the actuator stops running; and the controller, a module running on the CPU, asynchronously calls the interface “start” of the actuator at the beginning of a trail to start showing accurate visual stimuli, then accesses a hardware interface connected with an electroencephalograph instrument to write a marker into electroencephalogram signals, and asynchronously calls the interface “stop” of the actuator at the end of the trail to stop showing the accurate visual stimuli.