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New possibilities for enhanced keyboard input for the handicapped

 

作者: SoedeMathijs,   van BalkomHans L. M.,   DeroostGreta,   FonH. M.,   KnippenbergVan,   KamphuisHarry,  

 

期刊: Journal of Medical Engineering&Technology  (Taylor Available online 1989)
卷期: Volume 13, issue 1-2  

页码: 34-36

 

ISSN:0309-1902

 

年代: 1989

 

DOI:10.3109/03091908909030191

 

出版商: Taylor&Francis

 

数据来源: Taylor

 

摘要:

Motor-and speech-impaired people can have severe problems with communication. If speech is hampered, the use of computerized communication devices can be a solution. Key entry limitations due to motor impairments may result in very low communication speeds - less than three words a minute is not unusual.The research described here deals with speed enhancement on the basis of redundancy in language. Two uses are explored: prediction and automatic decoding in the case of keyboards with a small number of keys.Prediction means that characters, words and (parts of) sentences are predicted on the basis of text which is already typed in. A prototype system is being designed which combines the features of the PAL prediction system from Dundee and the WRITE-keyboard from Boston.Decoding refers to two-step selection systems with a small number of keys in which the second selection is done automatically by a computer program. Keystroke savings of 40 to 50% are possible.

 

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