Threshold barrier system
AssigneeRadio Systems Corporation
InventorsSteven Roger Floyd, Duane A. Gerig, William P. Moore, Thomas Brandon Lee
Life of this patent
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Abstract
A system is described that includes a transmitter for generating a magnetic field comprising a first detection region and a second detection region, wherein the first detection region is different than the second detection region. The system comprises a receiver configured to detect at a location of the receiver in the magnetic field a magnetic field vector, a polarity, and at least one additional vector. The system comprises the receiver configured to use the magnetic field vector, the polarity, and the at least one additional vector to determine a position of the receiver in the magnetic field.
Claims24
A system comprising:
- a transmitter for generating a magnetic field comprising a first detection region and a second detection region, wherein the first detection region is different than the second detection region;
- a receiver configured to detect at a location of the receiver in the magnetic field a magnetic field vector, a polarity, and at least one additional vector;
- the receiver configured to use the magnetic field vector, the polarity, and the at least one additional vector to determine a position of the receiver in the magnetic field.
A system comprising:
- a transmitter for generating a magnetic field that defines a boundary;
- a receiver configured to detect at a location of the receiver in the magnetic field a magnetic field vector, a polarity, and at least one additional vector;
- the receiver configured to use the magnetic field vector, the polarity, and at least one additional vector to determine a position of the receiver in the magnetic field relative to the boundary.
A system comprising:
- a transmitter for generating a magnetic field comprising a first detection region and a second detection region, wherein the first detection region is different than the second detection region;
- a receiver configured to detect at a location of the receiver in the magnetic field a magnetic field vector, a polarity, and at least one additional vector;
- the receiver configured to compute an angle between the magnetic field vector and the at least one additional vector;
- the receiver configured to determine a presence of the receiver in the first detection area when the angle falls below a first value and the polarity comprises a first polarity.
Dependencies are inferred from the claim text.