Light-based communication transmission protocol
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United States of America Patent
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Oct 3, 2017
Grant Date -
Oct 1, 2015
app pub date -
Dec 16, 2014
filing date -
Mar 25, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Techniques are disclosed for providing light-based communication (LCom) between a receiver device and one or more transmitting LCom-enabled luminaires. In accordance with some embodiments, LCom data to be transmitted may be allocated over multiple colors of light output by multiple LCom-enabled luminaires and transmitted in parallel across the multiple colors of light using a time division multiple access (TDMA) scheme. In some cases, the disclosed techniques can be used, for example, to allow for multiple LCom-enabled luminaires to communicate simultaneously over multiple active LCom channels with a single receiver device. In some instances, the disclosed techniques may be used, for example, to provide channel redundancy that facilitates successful completion of LCom data transmission when an LCom channel is broken. In some instances, the disclosed techniques may be used, for example, to provide more accurate positioning for indoor navigation.
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International Classification(s)
- H04N:PICTORIAL COMMUNICATION, e.g. TELEVISION
- G06T:IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- H04B:TRANSMISSION
- G01C:MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING....
- G01S:RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMI....
- H04J:MULTIPLEX COMMUNICATION
- G06K:RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD ....
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