DYNAMIC KEYBOARD SYSTEMS & IMPROVING TYPING PERFORMANCE

动态键盘系统

• 批准号: 2866875
• 负责人: JAMES E SCHROEDER
• 金额: $ 9.97万
• 依托单位: APPLIED HUMAN FACTORS, INC.
• 依托单位国家: 美国
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-07-01 至 1999-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2866875
• 关键词: assistive device /technology; biomedical equipment development; computer program /software; computer system design /evaluation; computer system hardware; human subject; work site

Recent advances in computer technology (i.e., the dramatic increase in speed and memory) and assistive technology software (i.e., existing On- screen keyboard systems) provide the foundation for an innovative approach t assisted typing. In the proposed effort, this new approach will be exploited and tested. "Dynamic Keyboards" are hypothesized to increase typing speed and accuracy in physically, mentally, and learning disabled users because they dynamically adapt an on-screen keyboard to the current typing context. Using "letter prediction", Dynamic Keyboards modify a displayed keyboard so that only those keys that are highly probable in that context are displayed or highlighted. Hypothesized sources of performance enhancement are due to 1) reduced visual scanning time, 2) less complex displays, 3) reduced probability of selecting an incorrect key, and 4) decreased key selection time for persons using scanning keyboards. In the proposed work, different approaches to Dynamic Keyboards will be identified, created, and evaluated in a user test involving the target user population. Subjective evaluations will be solicited and objective measures of typing performance under different experimental conditions will be collected and analyzed to demonstrate feasibility and potential. PROPOSED COMMERCIAL APPLICATIONS: If the proposed research demonstrates benefits of Dynamic Keyboards for improving typing speed and accuracy for persons who have difficulty using standard keyboards,the resulting software will be incorporated in an existing product and marketed to end users and organizations that provide services for the end users.

计算机技术的最新进展（即速度和内存的急剧增长）和辅助技术软件​​（即现有的屏幕键盘系统）为创新方法T辅助打字提供了基础。 在拟议的努力中，将利用和测试这种新方法。假设“动态键盘”可以提高身体，精神和学习障碍用户的键入速度和准确性，因为它们会动态地将屏幕键盘适应当前键入上下文。使用“字母预测”，动态键盘修改了显示的键盘，以便仅在该上下文中显示或突出显示高度可能的键。 假设的性能增强源是由于1）减少视觉扫描时间，2）较少复杂的显示，3）选择不正确的键的可能性降低，而4）使用扫描键盘的人减少了密钥选择时间。 在拟议的工作中，将在涉及目标用户群体的用户测试中确定，创建和评估动态键盘的不同方法。 将征求主观评估，并将收集和分析在不同的实验条件下打字性能的客观度量，以证明可行性和潜力。拟议的商业应用程序：如果拟议的研究表明了动态键盘的好处，以提高使用标准键盘难以使用难度的人的打字速度和准确性，则将结合的软件将被纳入现有产品中，并向最终用户和组织推销为最终用户提供服务的最终用户和组织。