IDENTIFYING AND LOCATING PLURAL SIGNAL EMITTERS
First Claim
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1. A system, comprising:
- a plurality of emitters each configured to issue an electromagnetic signal characterized by a distinct modulation pattern;
a sensor configured to detect the electromagnetic signals; and
a signal processor coupled to the sensor and configured to determine an identity and an instantaneous location for each of the emitters thus defining data, the signal processor configured to communicate the data to a computer.
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Abstract
A system includes plural emitters each associated with a stylus or other entity. Each emitter is independently displaceable over an area, and emits an electromagnetic signal modulated in accordance with a distinct pattern. A single sensor is configured to detect the plural emitters. Associated signal processing determines the identity and location of each emitter. Corresponding data is communicated to a computer for traversed pathway determination, recording, writing or character recognition, or other operations.
9 Citations
15 Claims
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1. A system, comprising:
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a plurality of emitters each configured to issue an electromagnetic signal characterized by a distinct modulation pattern; a sensor configured to detect the electromagnetic signals; and a signal processor coupled to the sensor and configured to determine an identity and an instantaneous location for each of the emitters thus defining data, the signal processor configured to communicate the data to a computer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method performed using an electronic device, comprising:
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sensing an electromagnetic signal emission from each of a plurality of emitters, each of the signal emissions characterized by a distinct modulation pattern and a common timeframe; determining an identity and a location for each of the emitters; communicating data including the identity and the location for each of the emitters to a computer. - View Dependent Claims (13, 14, 15)
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Specification