Using colour to determine pointer position on a screen

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Abstract

Thin Film Transistor (TFT) screens are becoming more common in the workplace, replacing traditional Cathode Ray Tube (CRT) screens. As the TFT screen does not generate a scan line, traditional methods of light sensing pens do not work effectively on a TFT screen. This paper describes a novel light pen type peripheral, which may be used on either a TFT or CRT screen.
Original languageEnglish
Pages (from-to)265-270
JournalJournal of Computing in Systems and Engineering
Volume13
Issue number3
Publication statusPublished - 2012

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