Original Publication Date: 1989-Apr-01
Included in the Prior Art Database: 2005-Jan-27
This article describes a pressure-sensitive cursor direction key to improve usability as a pointing device, wherein variable key pressure provides variable cursor speed on a display. Prior key output is binary, such as ON and OFF (pressed/released), and has no intermediate level between ON and OFF. Typamatic is one of the solution to convey operator's intention by interpreting it to pressing time. Changing pressure is the other way of interpretating an operator message to be conveyed, with high pressure corresponding to far and low pressure corresponding to near. The pressure-sensitive key described in this article senses the pressure level and informs the system. Thus, the system can control the pointer on its display according to the information which comes from the keys.