Radar gesture sensing using existing data protocols
First Claim
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1. A computer-implemented method comprising:
- modulating a radio frequency (RF) signal with data according to a data protocol, the data comprising a training sequence in accordance with the data protocol;
emitting a radar field using the modulated RF signal, the radar field including the training sequence;
receiving one or more reflection signals caused by a reflection of the radar field off an object performing a gesture within the radar field, the reflection signals containing portions corresponding to the training sequence; and
analyzing the portions of the reflection signals corresponding to the training sequence to determine the gesture.
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Abstract
This document describes techniques using, and devices embodying, radar gesture sensing using existing data protocols. These techniques and devices enable transmitting data according to an existing data protocol, modulating the data on a radar field to transmit to another device, and sensing user gestures by analyzing reflections of portions of transmitted data by the transmitting or receiving device. Techniques are also described to filter received signals based on addressing information in the transmitted data to limit gesture recognition at a receiving device to transmitting devices known to the receiver.
584 Citations
20 Claims
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1. A computer-implemented method comprising:
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modulating a radio frequency (RF) signal with data according to a data protocol, the data comprising a training sequence in accordance with the data protocol; emitting a radar field using the modulated RF signal, the radar field including the training sequence; receiving one or more reflection signals caused by a reflection of the radar field off an object performing a gesture within the radar field, the reflection signals containing portions corresponding to the training sequence; and analyzing the portions of the reflection signals corresponding to the training sequence to determine the gesture. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A radar system comprising:
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a first device configured to; modulate a radio frequency (RF) signal with data formatted according to a data protocol, the data comprising at least a training sequence in accordance with the data protocol; emit a radar field using the modulated RF signal, the radar field including the training sequence; a second device configured to; receive one or more reflection signals caused by a reflection of the radar field off an object performing a gesture within the radar field, the reflection signals containing portions corresponding to the training sequence; and analyze the portions of the reflection signals corresponding to the training sequences to determine the gesture. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A device comprising a gesture sensing component, the gesture sensing component configured to:
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modulate a radio frequency (RF) signal with data formatted according to a data protocol, the data comprising at least a training sequence in accordance with the data protocol; emit a radar field using the modulated RF signal, the radar field including the training sequence; receive one or more reflection signals caused by a reflection of the radar field off an object performing a gesture within the radar field, the reflection signals containing portions corresponding to the training sequence; and analyze the portions of the reflection signals corresponding to the training sequence to determine the gesture. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification