TRACKING DETERMINATION BASED ON INTENSITY ANGULAR GRADIENT OF A WAVE
First Claim
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1. A method for detecting a position of a handheld device, the method comprising:
- measuring intensities of at least one beam emitted by a base station;
calculating relative intensities based on the measured intensities; and
determining the position of the handheld device based on the measured intensities and the calculated relative intensities.
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Abstract
Handheld device, base station, computer readable medium and method for detecting a position of a handheld device. The method includes measuring intensities of at least one beam emitted by a base station; calculating relative intensities based on the measured intensities; and determining the position of the handheld device based on the measured intensities and the calculated relative intensities.
95 Citations
47 Claims
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1. A method for detecting a position of a handheld device, the method comprising:
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measuring intensities of at least one beam emitted by a base station; calculating relative intensities based on the measured intensities; and determining the position of the handheld device based on the measured intensities and the calculated relative intensities. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A handheld device for detecting a position relative to a base station with which the handheld device communicates, the handheld device comprising:
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a first receiver configured to measure intensities of beams emitted by a base station; and a processor connected to the first receiver and configured to, calculate relative intensities based on the measured intensities, and determine the position of the handheld device based on the measured intensities and the calculated relative intensities. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A base station configured to communicate with a handheld device, the base station comprising:
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at least one emitter configured to emit a beam of an electromagnetic wave such that an intensity of the beam has a desired angular distribution in space; and a processor configured to control an emitting time of the at least one emitter, wherein an amplitude the beam follows a same pattern in time at a given location. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A system comprising:
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a handheld device having a first receiver; a base station having plural emitters and configured to communicate with the handheld device; and a processor configured to communicate with the first receiver, wherein the first receiver is configured to measure intensities of beams emitted by the emitters, the processor is configured to calculate relative intensities based on the measured intensities, and the processor is configured to determine the position of the handheld device based on the measured intensities and the calculated relative intensities. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 39, 40, 41, 42, 46, 47)
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38. A computer readable medium including computer executable instructions, wherein the instructions, when executed, implement a method for detecting a position of a handheld device, the method comprising:
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providing a system comprising distinct software modules, wherein the distinct software modules comprise a relative intensity calculation module, a linear position calculation module and an angular position calculation module; measuring intensities of at least one beam emitted by a base station; calculating, based on the relative intensity calculation module, relative intensities based on the measured intensities; and determining, based on the linear position calculation module, the position of the handheld device based on the measured intensities and the calculated relative intensities. - View Dependent Claims (43, 44, 45)
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Specification