Control using movements
First Claim
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1. A method of recognizing a movement of an object as one of a set of one or more possible predetermined movements, the method comprising:
- continuously or repeatedly transmitting acoustic signals between at least two transmitter-receiver pairs, said signals being reflected from an object to produce reflected signals;
analyzing signals received at the receiver of a first one of said transmitter-receiver pairs to determine whether one or more reflected signals, received at the receiver, meets a first predetermined proximity criterion, the first predetermined proximity criterion comprising the reflected signal or signals having a time of flight, or average time of flight, from the transmitter to the receiver of the transmitter-receiver pair, via the object, that is within a first predetermined maximum time of flight, and recording a first event for the first one of said transmitter-receiver pairs when one or more reflected signal meets the first predetermined proximity criterion;
analyzing signals received at the receiver of a second one of said transmitter-receiver pairs to determine whether one or more reflected signals, received at the receiver, meets a second predetermined proximity criterion, the second predetermined proximity criterion comprising the reflected signal or signals having a time of flight, or average time of flight, from the transmitter to the receiver of the transmitter-receiver pair, via the object, that is within a second predetermined maximum time of flight, and recording a second event for the second one of said transmitter-receiver pairs when, after the first event, one or more subsequent reflected signals meets the second predetermined proximity criterion; and
using said first and second events to identify a movement of the object as one of a set of one or more possible predetermined movements.
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Abstract
A movement of an object is recognised as a predetermined movement, by transmitting signals between transmitter-receiver pairs, which are reflected from the object. A first event is recorded for one of the transmitter-receiver pairs if a reflected signal meets a predetermined proximity criterion, and a second event is recorded for a second transmitter-receiver pair if after the first event, a subsequent reflected signal meets a predetermined proximity criterion. The first and second events are used to identify the movement.
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Citations
21 Claims
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1. A method of recognizing a movement of an object as one of a set of one or more possible predetermined movements, the method comprising:
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continuously or repeatedly transmitting acoustic signals between at least two transmitter-receiver pairs, said signals being reflected from an object to produce reflected signals; analyzing signals received at the receiver of a first one of said transmitter-receiver pairs to determine whether one or more reflected signals, received at the receiver, meets a first predetermined proximity criterion, the first predetermined proximity criterion comprising the reflected signal or signals having a time of flight, or average time of flight, from the transmitter to the receiver of the transmitter-receiver pair, via the object, that is within a first predetermined maximum time of flight, and recording a first event for the first one of said transmitter-receiver pairs when one or more reflected signal meets the first predetermined proximity criterion; analyzing signals received at the receiver of a second one of said transmitter-receiver pairs to determine whether one or more reflected signals, received at the receiver, meets a second predetermined proximity criterion, the second predetermined proximity criterion comprising the reflected signal or signals having a time of flight, or average time of flight, from the transmitter to the receiver of the transmitter-receiver pair, via the object, that is within a second predetermined maximum time of flight, and recording a second event for the second one of said transmitter-receiver pairs when, after the first event, one or more subsequent reflected signals meets the second predetermined proximity criterion; and using said first and second events to identify a movement of the object as one of a set of one or more possible predetermined movements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus for recognizing a movement of an object as one of a set of one or more possible predetermined movements, comprising:
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at least two transmitter-receiver pairs; electronic controller arranged to; continuously or repeatedly transmit acoustic signals between the transmitter-receiver pairs, the signals being reflected from an object to produce reflected signals; analyze signals received at the receiver of a first one of said transmitter-receiver pairs to determine whether one or more reflected signals, received at the receiver, meets a first predetermined proximity criterion, the first predetermined proximity criterion comprising the reflected signal or signals having a time of flight, or average time of flight, from the transmitter to the receiver of the transmitter-receiver pair, via the object, that is within a first predetermined maximum time of flight, and to record a first event for the first one of said transmitter-receiver pairs when one or more reflected signal meets the first predetermined proximity criterion; and analyze signals received at the receiver of a second one of said transmitter-receiver pairs to determine whether one or more reflected signals, received at the receiver, meets a second predetermined proximity criterion, the second predetermined proximity criterion comprising the reflected signal or signals having a time of flight, or average time of flight, from the transmitter to the receiver of the transmitter-receiver pair, via the object, that is within a second predetermined maximum time of flight, and to record a second event for the second one of said transmitter-receiver pairs when, after the first event, one or more subsequent reflected signals meets the second predetermined proximity criterion; and an electronic processor arranged to use the first and second events to identify a movement of the object as one of a set of one or more possible predetermined movements. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A non-transitory computer software product configured, when executed on a computer, to recognize a movement of an object as one of a set of one or more possible predetermined movements, the software performing the method comprising:
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receiving data resulting from continuously or repeatedly transmitting acoustic signals between at least two transmitter-receiver pairs, the signals being reflected from an object to produce reflected signals; analyzing signals received at the receiver of a first one of said transmitter-receiver pairs to determine whether one or more reflected signals, received at the receiver, meets a first predetermined proximity criterion, the first predetetermined proximity criterion comprising the reflected signal or signals having a time of flight, or average time of flight, from the transmitter to the receiver of the transmitter-receiver pair, via the object, that is within a first predetermined maximum time of flight, and recording a first event for the first one of said transmitter- receiver pairs if the data represents one or more reflected signals meeting the first predetermined proximity criterion; analyzing signals received at the receiver of a second one of said transmitter-receiver pairs to determine whether one or more reflected signals, received at the receiver, meets a second predetermined proximity criterion, the second predetermined proximity criterion comprising the reflected signal or signals having a time of flight, or average time of flight, from the transmitter to the receiver of the transmitter-receiver pair, via the object, that is within a second predetermined maximum time of flight, and recording a second event for the second one of said transmitter-receiver pairs if, after the first event, the data represents a subsequent one or more reflected signals meeting the second predetermined proximity criterion; and using the first and second events to identify a movement of the object as one of a set of one or more possible predetermined movements. - View Dependent Claims (21)
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Specification