Wireless Hand Gesture Capture
First Claim
Patent Images
1. Apparatus comprising, in combination:
- RFID tags that include, or can receive signals from, sensors, andan RFID reader,wherein;
the RFID reader can transmit wirelessly to the tags at a frequency of between 700 MHz and 1000 MHz,a first set of the RFID tags comprises at least one tag, and a second set of the RFID tags comprises at least one tag not included in the first set,each RFID tag in the first set is, respectively, housed in or attached to a ring, which ring is wearable on at least one of a human'"'"'s fingers,each RFID tag in the second set is, respectively, housed in or attached to a device that is wearable adjacent to a portion of the human other than a hand or arm, andone or more of the sensorscan each, respectively, measure distance between two objects that are not in direct physical contact with each other, even when the two objects are not moving relative to each other, andare each, respectively, not an inertial sensor.
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Abstract
In exemplary implementations of this invention, finger and hand gestures are tracked using passive RFID tags. The RFID tags include sensors, and/or can accommodate sensor signals from adjacent sensors. An RFID reader is worn by the user. The tags may be housed in rings worn on a user'"'"'s fingers, or may be located in other locations on a user'"'"'s body or clothing. The RFID system may transmit in the UHF range. The sensors may include inertial sensors and proximity sensors. For example, the proximity sensors may be magnetic sensors, capacitive sensors, sensors that detect electrical contact, sensors that detect signal strength, sensors that detect detuning of resonant tags, and other sensors that measure distance or contact between two objects.
103 Citations
20 Claims
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1. Apparatus comprising, in combination:
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RFID tags that include, or can receive signals from, sensors, and an RFID reader, wherein; the RFID reader can transmit wirelessly to the tags at a frequency of between 700 MHz and 1000 MHz, a first set of the RFID tags comprises at least one tag, and a second set of the RFID tags comprises at least one tag not included in the first set, each RFID tag in the first set is, respectively, housed in or attached to a ring, which ring is wearable on at least one of a human'"'"'s fingers, each RFID tag in the second set is, respectively, housed in or attached to a device that is wearable adjacent to a portion of the human other than a hand or arm, and one or more of the sensors can each, respectively, measure distance between two objects that are not in direct physical contact with each other, even when the two objects are not moving relative to each other, and are each, respectively, not an inertial sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. Apparatus comprising, in combination:
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RFID tags that include, or can receive signals from, sensors, and an RFID reader, wherein a first set of the RFID tags comprises at least one tag, and a second set of the RFID tags comprises at least one tag not included in the first set, each RFID tag in the first set is, respectively, housed in or attached to a ring, which ring is wearable on at least one of a human'"'"'s fingers, each RFID tag in the second set is, respectively, housed in or attached to a device that is wearable adjacent to a portion of the human other than a hand or arm, and one or more of the sensors can each, respectively, measure distance between two objects that are not in direct physical contact with each other, and are each, respectively, not an inertial sensor. - View Dependent Claims (17)
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18. A method of measuring distance by using:
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RFID tags that include, or can receive signals from, sensors, and an RFID reader, wherein at least one of the objects is a finger or hand of a human, the RFID reader can transmit wirelessly to the tags at a frequency of between 700 MHz and 1000 MHz, a first set of the RFID tags is housed in rings, which rings are wearable on at least some fingers of the human, a second set of the RFID tags, which second set comprises at least one tag, is housed in or on devices that are wearable adjacent to a part of the human other than an arm or hand, and at least one of the sensors can measure distance between two objects that are not in direct physical contact with each other. - View Dependent Claims (19, 20)
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Specification
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Current AssigneeMassachusetts Institute of Technology
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Original AssigneeMassachusetts Institute of Technology
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InventorsParadiso, Joseph, Bainbridge, Rachel
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Application NumberUS13/312,612Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current340/10.1CPC Class CodesG06F 2203/0331 Finger worn pointing deviceG06F 3/014 Hand-worn input/output arra...G06F 3/0346 with detection of the devic...
