Method of employing a chirographic stylus
First Claim
1. A spatial chirographic system, the system comprising:
- a signal pulse-emitting source subsystem unit;
a reader subsystem unit; and
a main system unit, wherein the signal pulse-emitting source subsystem unit, the reader subsystem unit, and the main system unit are adapted to cooperatively interpret handwriting character information.
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Abstract
Disclosed herein is a chirographic signal pulse-emitting source and chirographic reader system. In an embodiment according to the present invention, contact-free proximity sensors may replace mechanical sensors. Ultrasonic transducers emit position-signaling pulses from a tip of the signal pulse-emitting source. Ultrasonic sensors on a reader typeface frame receive the pulses (transmissions). Proximity may be determined from the duration of travel of a pulse. Also disclosed herein is a reader subsystem including at least two separate modules. The at least two separate modules may include a pulse transmitting unit for a hand-held part and a stationary typeface frame reader sensing and receiving unit. The method may provide multiple triangulation measurements from a sensor arrangement to sense a multi-dimensional direction of the signal pulse-emitting source. The method may also provide pulse-width resolution by averaging multiple triangulation measurements for each signal pulse.
18 Citations
23 Claims
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1. A spatial chirographic system, the system comprising:
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a signal pulse-emitting source subsystem unit;
a reader subsystem unit; and
a main system unit, wherein the signal pulse-emitting source subsystem unit, the reader subsystem unit, and the main system unit are adapted to cooperatively interpret handwriting character information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for spatially reading handwriting symbols, the method comprising:
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determining a position of a handwriting implement by;
receiving a remote signal emitted by the handwriting implement at a plurality of locations;
evaluating remote signal information corresponding to signal reception at each of the plurality of locations;
receiving a plurality of additional remote signals emitted by the handwriting implement at the plurality of locations; and
evaluating remote signal information corresponding to a plurality of signal receptions at each of the plurality of locations for the plurality of additional remote signals; and
determining a plurality of additional positions of the handwriting implement over a period of time; and
determining a handwriting symbol corresponding to the plurality of positions that the handwriting implement has within the period of time. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification