METHOD AND DEVICE FOR THREE-DIMENSIONAL SENSING
First Claim
1. An apparatus comprising:
- a touchless sensing unit, wherein said touchless sensing unit identifies and tracks a relative location and movement of an object in a three-dimensional space; and
a controller communicatively coupled to said touchless sensing unit for communicating a coordinate information of said object within said three-dimensional space.
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Accused Products
Abstract
An apparatus (100) and method is provided that identifies and tracks a relative location and movement of an object in a three-dimensional space. The sensing unit includes a processor (122) for communicating a coordinate information of the object within the three-dimensional space. The method includes emitting a pulse from a first transducer (101), estimating a time of flight from a reflection signal received by a second transducer (102), and determining a location and relative movement of the object from the time of flight measurements. The sensing unit can provide touchless control via touchless finger depression actions, finger slide actions, finger release actions, and finger hold actions.
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Citations
20 Claims
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1. An apparatus comprising:
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a touchless sensing unit, wherein said touchless sensing unit identifies and tracks a relative location and movement of an object in a three-dimensional space; and a controller communicatively coupled to said touchless sensing unit for communicating a coordinate information of said object within said three-dimensional space. - View Dependent Claims (2, 3, 4, 5)
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6. A method for identifying and tracking a relative location and movement of an object in a three-dimensional space comprising:
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emitting a pulse from a first transducer; estimating a time of flight between when said pulse was transmitted from said transducer and when a reflection of said signal off an object in said three-dimensional space was received from a plurality of transducers; estimating a differential time of flight between a first reflected signal and a second reflected signal; determining a location and relative displacement of said object from said time of flight measurement and said differential time of flight measurement; wherein the object is within a spherical radius of 12 inches from the first transducer and plurality of transducers. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A mobile device having a sensing unit comprising:
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an array of sensing elements aligned along said communication device to identify and track touchless finger movements; at least one sensing element within a boundary of a display of the communication device; and a controller communicatively coupled to said array and said at least one sensing element for conveying touchless controls to a user interface of said communication device in response to said finger movements. - View Dependent Claims (20)
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Specification