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US 2016/0239103 A9Published application
Optical object recognition system
AssigneePixart Imaging Inc.
InventorsChia-Cheun LIANG, Yi-Hsien KO, Han-Ping CHENG
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Abstract
An optical object recognition system includes at least two beacons, an image sensor and a processing unit. The beacons operate in an emission pattern and the emission pattern of the beacons has a phase shift from each other. The image sensor captures image frames with a sampling period. The processing unit is configured to recognize different beacons according to the phase shift of the emission pattern in the image frames.
Claims22
An optical object recognition system, comprising:
- at least two beacons operating with a same emission pattern and the same emission pattern of different beacons having a phase shift from each other;
- an image sensor configured to capture image frames with a sampling period;
- and
- a processing unit configured to recognize the different beacons according to the phase shift of the same emission pattern in the image frames.
1 more element
An optical object recognition system, comprising:
- a light control unit configured to generate a first activation signal;
- a plurality of beacons, connected in serial, a first beacon of the plurality of beacons operating with an emission pattern and generating a second activation signal after receiving the first activation signal, and the beacons connected after the first beacon operating with the emission pattern after receiving the second activation signal, and the beacons connected after the first beacon but not the last beacon further generating the second activation signal to a next beacon thereof, wherein the emission pattern of each of the beacons delay a phase shift from that of a previous beacon thereof;
- an image sensor configured to capture image frames with a sampling period;
- and
- a processing unit configured to recognize different beacons according to the phase shift of the emission pattern in the image frames.
2 more elements
An optical object recognition system, comprising:
- a light control unit configured to generate an activation signal;
- at least two beacons operating with a same emission pattern after receiving the activation signal and the same emission pattern of different beacons having a phase shift from each other;
- an image sensor configured to capture image frames with a sampling period;
- and
- a processing unit configured to recognize the different beacons according to the phase shift of the same emission pattern in the image frames.
2 more elements
Dependencies are inferred from the claim text.