Portable Prompter with a 10-inch TFTb Active-Matrix Monochrome LCD

Abstract

This paper introduces a newly developed portable prompter which is based on a 10-inch active-matrix monochrome backlit LCD. This prompter consists of an ordinary laptop computer, a 10-inch TFT-LCD, and a partially reflective plastic plate.
Lecturers can easily read the text reflected by the plastic plate because of the LCD's high contrast, fast response time, and bright back-lighting.
The audience can see the lecture notes without distortion because the reflectivity of the plastic plate is 20%, so 80% of the light passes through it. The system features convenient functions such as page down/ up, scrolling display with controllable speed, adjustable plastic plate position, and adjustable LCD back-lighting brightness.
This system is useful to both lecturers and audiences as shown by subjective evaluation experiments. It will be widely used for various kinds of presentations in the near future because it is portable and easy to use.