System and method for multiple object detection on a digitizer system
First Claim
Patent Images
1. A digitizer system comprising:
- an object incorporating an electronic circuit configured for radiating a first signal and a second signal in response to querying, the second signal separate from the first signal, wherein only the first signal is modulated with information for identifying the object;
a digitizer sensor configured for detecting the second signal while the object is positioned on or over the digitizer sensor; and
a reader other than the digitizer sensor operative to both query the object and detect the at least one modulated signal via air with an antenna that is separate from the digitizer sensor;
circuitry configured for receiving input from the reader regarding the first signal detected and input from the digitizer sensor regarding location at which the second signal was detected, and for determining an identity code based on the input received by the reader, for determining a position on or over the digitizer based on the input received from the digitizer sensor, and for identifying the object and its position by associating the position detected with the identity determined.
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Abstract
A digitizer system comprises at least one object incorporating an electronic tag configured for radiating at least one modulated signal and at least one second signal; a digitizer sensor configured for detecting the at least one second signal while the object is positioned on or over the digitizer sensor; and circuitry configured for identifying the object based on modulation of the at least one modulated signal and for determining a position of the object on or over the digitizer based on the detected second signal on a portion of the digitizer sensor.
33 Citations
51 Claims
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1. A digitizer system comprising:
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an object incorporating an electronic circuit configured for radiating a first signal and a second signal in response to querying, the second signal separate from the first signal, wherein only the first signal is modulated with information for identifying the object; a digitizer sensor configured for detecting the second signal while the object is positioned on or over the digitizer sensor; and a reader other than the digitizer sensor operative to both query the object and detect the at least one modulated signal via air with an antenna that is separate from the digitizer sensor; circuitry configured for receiving input from the reader regarding the first signal detected and input from the digitizer sensor regarding location at which the second signal was detected, and for determining an identity code based on the input received by the reader, for determining a position on or over the digitizer based on the input received from the digitizer sensor, and for identifying the object and its position by associating the position detected with the identity determined. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method for detecting an object on a digitizer sensor, the method comprising:
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placing the object on or over the surface of a digitizer sensor, wherein the object includes an electronic circuit; querying the object with a reader via an antenna that is separate from the digitizer sensor; radiating at least two different signals with the electronic circuit in response to querying, the at least two different signals including a first signal and a second signal, the second signal separate from the first signal, wherein only the first signal is modulated with information for identifying the object; detecting the first signal with the reader via an antenna that is separate from the digitizer sensor; determining an identity code from the first signal based on the modulation; detecting the second signal with the digitizer sensor; determining a position based on the detection of the second signal with the digitizer sensor; and identifying the object and its position by associating the position detected with the identity determined. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. A method for detecting an object on a digitizer sensor, the method comprising:
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querying an object placed on or over the surface of a digitizer sensor, wherein the object includes an electronic circuit, the electronic circuit including memory capability with information, with a reader via an antenna that is separate from the digitizer sensor; radiating in response to querying, a position signal via a dipole and the information via an alternate channel; detecting the information signal with the reader via an antenna that is separate from the digitizer sensor; detecting the position signal with the digitizer sensor; and determining a position based on the detection of the position signal with the digitizer sensor.
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Specification