Pollak V A, Gallagher B
Division of Biomedical Engineering, University of Saskatchewan, Saskatoon, Canada.
J Med Eng Technol. 1989 Jan-Apr;13(1-2):23-7. doi: 10.3109/03091908909030189.
A computer-based communication system for non-verbal persons with severely deficient coordination of the upper extremities is described. The device doubles as an environmental control unit. Modular design is chosen throughout. Commercially available subunits are used to reduce cost. Input is by a 3 x 3 keyboard, when the user has some command over his hands. Otherwise a binary 'autoscan' access mode is used, which is controlled by repeated closures of a single binary switch. Output is in written form on a display or acoustical by synthesized speech. Hard-copy output can also be provided. Remote communication is possible by modem or by synthesized speech. Speed of message generation is increased by establishing a vocabulary, which contains, in addition to signs and letters of the alphabet, whole words and stereotyped phrases. The data blocks of the latter are accessed by a single input cycle similar to that used for the selection of isolated letters, symbols, etc.
本文介绍了一种用于上肢严重协调性不足的非言语人士的基于计算机的通信系统。该设备兼具环境控制单元的功能。整体采用模块化设计。使用市售的子部件以降低成本。当用户对手部有一定控制能力时，通过3×3键盘进行输入。否则，使用二进制“自动扫描”访问模式，该模式由单个二进制开关的重复闭合控制。输出形式为显示屏上的书面形式或通过合成语音进行声学输出。也可提供硬拷贝输出。通过调制解调器或合成语音可实现远程通信。通过建立一个词汇表来提高消息生成速度，该词汇表除了字母表的符号和字母外，还包含完整的单词和固定短语。后者的数据块可通过与选择单个字母、符号等所用的单个输入周期类似的方式进行访问。
