MAGNETIC SYNCHRONIZATION FOR A POSITIONING SYSTEM
First Claim
1. A positioning system, comprising:
- a transmitter, the transmitter comprising;
an acoustic signal transmitter configured to transmit a modulated acoustic signal; and
a magnetic synchronization signal transmitter configured to transmit a modulated magnetic synchronization signal;
a receiver, the receiver comprising;
an acoustic signal receiver configured to receive the transmitted modulated acoustic signal;
a magnetic synchronization signal receiver configured to receive the transmitted modulated magnetic synchronization signal; and
a processing component configured to receive the modulated acoustic signal from the acoustic signal receiver and the modulated magnetic synchronization signal form the magnetic synchronization signal receiver on a same time domain and using similar circuits for acoustic and magnetic signals to determine a position of the transmitter based on the received modulated synchronization signal and a determined time delay of the received modulated acoustic signal.
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Accused Products
Abstract
A synchronization system for an acoustic signal-based positioning system is provided that generates a magnetic field as a synchronization signal. The magnetic synchronization signal is transmitted by a transmitter of the positioning system and received by the receiver of the positioning system. The receiver may include a magnetic synchronization signal receiver that may receive the magnetic synchronization signal on a same acoustic channel as an acoustic positioning signal. Moreover, the magnetic synchronization signal receiver may be a component already present in the receiver and capable of receiving a magnetic synchronization signal.
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Citations
29 Claims
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1. A positioning system, comprising:
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a transmitter, the transmitter comprising; an acoustic signal transmitter configured to transmit a modulated acoustic signal; and a magnetic synchronization signal transmitter configured to transmit a modulated magnetic synchronization signal; a receiver, the receiver comprising; an acoustic signal receiver configured to receive the transmitted modulated acoustic signal; a magnetic synchronization signal receiver configured to receive the transmitted modulated magnetic synchronization signal; and a processing component configured to receive the modulated acoustic signal from the acoustic signal receiver and the modulated magnetic synchronization signal form the magnetic synchronization signal receiver on a same time domain and using similar circuits for acoustic and magnetic signals to determine a position of the transmitter based on the received modulated synchronization signal and a determined time delay of the received modulated acoustic signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A receiving device for an acoustic signal-based positioning system, comprising:
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an acoustic signal receiver configured to receive a modulated acoustic signal; a magnetic synchronization signal receiver configured to receive a modulated magnetic synchronization signal; and a processing component configured to receive the modulated acoustic signal from the acoustic signal receiver and the modulated magnetic synchronization signal from the magnetic synchronization signal receiver on a single path and using similar circuits for acoustic and magnetic signals to determine a position of an object emitting the modulated acoustic signal and the modulated magnetic synchronization signal based on the received modulated synchronization signal and a determined time delay of the received modulated acoustic signal. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for determining a position of an object, comprising:
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receiving, by a detector arrangement, at least one modulated ultrasonic waveform and a modulated magnetic synchronization signal emitted by the object, wherein receiving the at least one modulated ultrasonic waveform comprises receiving at least a first version of the at least one modulated ultrasonic waveform at a first acoustic sensor of the detector arrangement and a second version of the at least one modulated ultrasonic waveform at a second acoustic sensor of the detector arrangement; decoding, by a processing unit, the received versions of the modulated ultrasonic waveform and the received modulated magnetic synchronization signal, wherein the received versions of the modulated ultrasonic waveform and the received modulated magnetic synchronization signal are received by the processing unit on a same path; measuring, by the processing unit, a time delay between each of the decoded versions of the modulated ultrasonic waveform and the decoded modulated magnetic synchronization signal; converting, by the processing unit, the measured time delays to at least a first distance and a second distance; and determining, by the processing unit, the position of the object based on triangulating the first distance and the second distance. - View Dependent Claims (25, 26)
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27. A system for determining a position of an object, comprising:
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means for receiving at least one modulated ultrasonic waveform and a modulated magnetic synchronization signal emitted by the object, wherein the means for receiving is configured to receive at least a first version of the at least one modulated ultrasonic waveform at a first sensing means of the means for receiving and a second version of the at least one modulated ultrasonic waveform at a second sensing means of the means for receiving; means for decoding the received versions of the modulated ultrasonic waveform and the received modulated magnetic synchronization signal, wherein the received versions of the modulated ultrasonic waveform and the received modulated magnetic synchronization signal are received by the processing unit on a same path; means for measuring a time delay between each of the decoded versions of the modulated ultrasonic waveform and the decoded modulated magnetic synchronization signal; means for converting the measured time delays to at least a first distance and a second distance; and means for determining the position of the object based on triangulating the first distance and the second distance. - View Dependent Claims (28, 29)
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Specification