Infrared gesture recognition device and method
First Claim
1. A system for generating tracking coordinate information in response to movement of an information-indicating element, comprising:
- (a) an array of IR (infrared) sensors disposed along a surface of the array;
(b) each IR sensor includingfirst and second thermopile junctions connected in series to form a thermopile within a dielectric stack of a radiation sensor chip, the first thermopile junction being more thermally insulated from a substrate of the radiation sensor chip than the second thermopile junction, a sensor output signal between the first and second thermopile junctions being coupled to a bus; and
(c) a processing device coupled to the bus for receiving information representing temperature differences between the first and second thermopile junctions of the various IR sensors, respectively, caused by the presence of the information-indicating element, the processing device operating on the information representing the temperature differences to produce the tracking coordinate information as the information-indicating element moves along the surface.
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Accused Products
Abstract
A system for generating tracking coordinate information in response to movement of an information-indicating element includes an array (55) of IR sensors (60-x,y) disposed along a surface (55A) of the array. Each IR sensor includes first (7) and second (8) thermopile junctions connected in series to form a thermopile (7,8) within a dielectric stack (3) of a radiation sensor chip (1). The first thermopile junction is more thermally insulated from a substrate (2) of the radiation sensor chip than the second thermopile junction. A sensor output signal between the first and second thermopile junctions is coupled to a bus (63). A processing device (64) is coupled to the bus for operating on information representing temperature differences between the first and second thermopile junctions of the various IR sensors, respectively, caused by the presence of the information-indicating element to produce the tracking coordinate information as the information-indicating element moves along the surface.
52 Citations
20 Claims
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1. A system for generating tracking coordinate information in response to movement of an information-indicating element, comprising:
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(a) an array of IR (infrared) sensors disposed along a surface of the array; (b) each IR sensor including first and second thermopile junctions connected in series to form a thermopile within a dielectric stack of a radiation sensor chip, the first thermopile junction being more thermally insulated from a substrate of the radiation sensor chip than the second thermopile junction, a sensor output signal between the first and second thermopile junctions being coupled to a bus; and (c) a processing device coupled to the bus for receiving information representing temperature differences between the first and second thermopile junctions of the various IR sensors, respectively, caused by the presence of the information-indicating element, the processing device operating on the information representing the temperature differences to produce the tracking coordinate information as the information-indicating element moves along the surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for generating tracking coordinate information in response to movement of an information-indicating element, the method comprising:
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(a) providing an array of IR (infrared) sensors disposed along a surface of the array, each IR sensor including first and second thermopile junctions connected in series to form a thermopile within a dielectric stack of a radiation sensor chip, the first thermopile junction being more thermally insulated from a substrate of the radiation sensor chip than the second thermopile junction, a sensor output signal between the first and second thermopile junctions being coupled to a bus; (b) coupling a processing device to the bus; (c) operating the processing device to receive information representing temperature differences between the first and second thermopile junctions of the various IR sensors, respectively, caused by the presence of the information-indicating element; and (d) causing the processing device to operate on the information representing the temperature differences to produce the tracking coordinate information as the information-indicating element moves along the surface. - View Dependent Claims (16, 17, 18, 19)
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20. A system for generating tracking coordinate information in response to movement of an information-indicating element, comprising:
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(a) an array of IR (infrared) sensors disposed along a surface of the array, each IR sensor including first and second thermopile junctions connected in series to form a thermopile within a dielectric stack of a radiation sensor chip, the first thermopile junction being more thermally insulated from a substrate of the radiation sensor chip than the second thermopile junction, a sensor output signal between the first and second thermopile junctions being coupled to a bus; and (b) processing means coupled to the bus for operating on information representing temperature differences between the first and second thermopile junctions of the various IR sensors, respectively, caused by the presence of the information-indicating element to produce the tracking coordinate information as the information-indicating element moves along the surface.
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Specification