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

fYear

1997

fDate

2-4 Dec 1997

Firstpage

83

Lastpage

86

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, 1997. ISCE '97., Proceedings of 1997 IEEE International Symposium on

Print_ISBN

0-7803-4371-9

Type

conf

DOI

10.1109/ISCE.1997.658357

Filename

658357