Patent
Optical stylus and passive digitizing tablet data input system
William E. Bennett,Stephen J. Boies,Anthony Robin Davies,Karl-Friedrich Etzold,Todd Kanner Rodgers +4 more
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TLDR
In this paper, a stylus and table X-Y data input system for a video display system is presented, where absolute positional information is encoded in binary form in the tablet in such a fashion that the pen position upon the tablet is automatically determinable by illuminating a particular area of the tablet and reading off the digitized XY coordinate data stored therein.Abstract:
A stylus and table X-Y data input system for a video display system. The pen includes an optical styling having a suitable pickup mechanism and the tablet is passive in nature and provides direct digitized data readout. Absolute positional information is encoded in binary form in the tablet in such a fashion that the pen position upon the tablet is automatically determinable by illuminating a particular area of the tablet and reading off the digitized X-Y coordinate data stored therein. The pen and supporting hardware/software are rotationally insensitive so that the pen may be held in any desired position comfortable to a user. The system provides greatly improved resolution, sampling rate accuracy and general robustness particularly for such applications as text recognition as well as a wide variety of other graphical input uses.read more
Citations
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Pen and paper information recording system using an imaging pen
TL;DR: In this article, an information recording system includes a pen, having an instrument for writing on the writing surface, and an imaging system for providing image signals representative of images of the pixels near the pen tip when the tip is in contact with the surface.
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Absolute optical position determination
TL;DR: In this article, the authors proposed the use of a data surface (e.g., paper) formatted with a position-related coding (figure 1a) for indicating X-Y coordinates capable of reflecting a frequency of light.
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Optical position determination
TL;DR: In this article, a coordinate sensor is proposed for detecting the position of a moveable detector relative to a data space coded with coordinate information by detecting and processing the coordinate information. But this sensor is not suitable for the detection of human motion.
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Pen and paper information recording system
TL;DR: In this paper, an information recording system includes a writing paper having a writing surface and a prerecorded invisible pattern of pixels associated with the writing surface, each of the pixels contains encoded, optically readable position information which identifies a coordinate position on the writing surfaces.
Patent
Absolute optical position determination
TL;DR: In this article, the authors proposed the use of a data surface (e.g., paper) formatted with a position-related coding (figure 1a) for indicating X-Y coordinates capable of reflecting a frequency of light.
References
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