Tablet PC interaction with digital micromirror device (DMD)

Hakki H. Refai; Mostafa H. Dahshan; James J. Sluss

doi:10.1117/12.705127

Abstract

Digital light processing (DLP) is an innovative display technology that uses an optical switch array, known as a digital micromirror device (DMD), which allows digital control of light. To date, DMDs have been used primarily as high-speed spatial light modulators for projector applications. A tablet PC is a notebook or slate-shaped mobile PC. Its touch screen or digitizing tablet technology allows the user to operate the notebook with a stylus or digital pen instead of using a keyboard or mouse. In this paper, we describe an interface solution that translates any sketch on the tablet PC screen to an identical mirror-copy over the cross-section of the DMD micromirrors such that the image of the sketch can be projected onto a special screen. An algorithm has been created to control each single micromirror of the hundreds of thousands of micromirrors that cover the DMD surface. We demonstrate the successful application of a DMD to a high-speed two-dimensional (2D) scanning environment, acquiring the data from the tablet screen and launching its contents to the projection screen; with very high accuracy up to 13.68 &mgr;m x 13.68 &mgr;m of mirror pitch.

Citation Download Citation

Hakki H. Refai, Mostafa H. Dahshan, James J. Sluss, "Tablet PC interaction with digital micromirror device (DMD)", Proc. SPIE 6507, Multimedia on Mobile Devices 2007, 65070N (26 February 2007); doi: 10.1117/12.705127; http://dx.doi.org/10.1117/12.705127

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