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 informationwherein the signal pulse-emitting source subsystem unit comprises a signal pulse-emitting source comprising a signal-emitting device, the signal-emitting device being located in a tip of the signal pulse-emitting source and the signal pulse-emitting unit, the reader subsystem unit and the main system unit cooperate to determine a position of at least the tip of the signal pulse-emitting source in a reference chirographic font-centric coordinate frame.
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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.
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Citations
22 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 wherein the signal pulse-emitting source subsystem unit comprises a signal pulse-emitting source comprising a signal-emitting device, the signal-emitting device being located in a tip of the signal pulse-emitting source and the signal pulse-emitting unit, the reader subsystem unit and the main system unit cooperate to determine a position of at least the tip of the signal pulse-emitting source in a reference chirographic font-centric coordinate frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for spatially reading handwriting symbols, the method comprising:
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determining a position of a handwriting implement in a reference chirographic font-centric coordinate frame 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 in a reference chirographic font-centric coordinate frame 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 (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. 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; determining a plurality of additional positions of the handwriting implement over a period of time by; 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; determining a handwriting symbol corresponding to the plurality of positions of the handwriting implement; determining an orientation of a signal pulse-emitting source based upon known positions of a plurality of sensors wherein determining the orientation of the signal pulse-emitting source comprises affixing an elongated hood to the signal pulse-emitting source, the elongated hood focusing and directing emitted signals along a signal pulse-emitting source axis line and attenuating emitted signals in other directions; and recording a signal strength of a received signal by each of a plurality of sensors. - View Dependent Claims (22)
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Specification