Title :
An application of infrared technique to control a computer keyboard for handicap
Author :
Chen, Yu-Luen ; Chang, Walter H. ; Wong, May Kuen ; Tang, Tan-Fuk ; Kuo, Te-Son
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A new infrared-controlled keyboard instead of the conventional computer keyboard was developed for those with hand dysfunction. The infrared transmitter with laser director was placed on the eyeglasses, and the keys of the conventional computer keyboard were all replaced by infrared receivers. In the infrared receivers we designed a modulized circuit to receive, demodulate and process the infrared signals. The modulized circuit used signal processing technique to convert the astable signal of the infrared receiver to a standard pulse train which could be used as control signal easily
Keywords :
biomedical electronics; handicapped aids; infrared detectors; keyboards; laser applications in medicine; light emitting diodes; medical signal processing; optical information processing; telecontrol; user interfaces; astable signal; computer keyboard; control signal; eyeglasses; hand dysfunction; handicap; infrared technique; infrared transmitter; infrared-controlled keyboard; laser director; modulized circuit; signal processing technique; standard pulse train; Application software; Biomedical computing; Circuits; Decoding; Keyboards; Optical computing; Optical receivers; Optical transmitters; Power lasers; Signal processing;
Conference_Titel :
Consumer Electronics, 1997. ISCE '97., Proceedings of 1997 IEEE International Symposium on
Print_ISBN :
0-7803-4371-9
DOI :
10.1109/ISCE.1997.658357
