ACOUSTIC MOTION CAPTURE
First Claim
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1. A motion-capture base-unit for detecting a motion-capture mobile-article, said base-unit comprising:
- two or more acoustic transmitters, each operative for transmitting an acoustic signal;
an RF transmitter operative to transmit a synchronization signal; and
an RF receiver operative to receive timing data transmitted from said mobile-article,whereinsaid synchronization signal and said acoustic signals are transmitted synchronously, andsaid timing data contains time measuring information associated with time delay at said mobile-article between said synchronization signal and said acoustic signals.
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Abstract
A motion-capture system containing a base-unit and one or more mobile-articles The base-unit contains two or more acoustic transmitters, each transmitting an acoustic signal, an RF transmitter transmitting a synchronization signal, and an RF receiver for receive timing data transmitted from the mobile-articles. The synchronization signal and the acoustic signals are transmitted synchronously, and the timing data contains time measuring information associated with time delay at the mobile-article, between the synchronization signal and the acoustic signals.
57 Citations
34 Claims
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1. A motion-capture base-unit for detecting a motion-capture mobile-article, said base-unit comprising:
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two or more acoustic transmitters, each operative for transmitting an acoustic signal; an RF transmitter operative to transmit a synchronization signal; and an RF receiver operative to receive timing data transmitted from said mobile-article, wherein said synchronization signal and said acoustic signals are transmitted synchronously, and said timing data contains time measuring information associated with time delay at said mobile-article between said synchronization signal and said acoustic signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 28, 29, 30, 31, 32)
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8. A motion-capture mobile-article for detecting said mobile-article with respect to a base-unit, the mobile-article comprising:
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at least one acoustic receiver, each operative for receiving an acoustic signal transmitted from said base-unit; an RF receiver operative to receive a synchronization signal transmitted from said base-unit; and an RF transmitter operative to transmit timing data to said base-unit, wherein said synchronization signal and said acoustic signals are transmitted synchronously, and said timing data contains time measuring information associated with time delay at said mobile-article between said synchronization signal and said acoustic signals. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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33. A method of motion-capture comprising:
providing a base station performing the steps of transmitting an RF signal for synchronization, transmitting a plurality of acoustic signals for localization, receiving timing data from a mobile-article, performing localization of said mobile article to form localization data, and sending said localization data to a host computer.
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34. A method of motion-capture comprising:
providing a mobile-article performing the steps of receiving RF signal transmitted by a base-unit for synchronization, receiving a plurality of acoustic signals transmitted by said base-unit for localization, correlating said acoustic signals to identify at least one path of said acoustic signals, selecting at least one of said paths, creating timing data packet comprising information of said selected paths, and transmitting said timing data to said base-unit.
Specification