发明名称 |
METHOD AND APPARATUS OF DECODING LOW-RATE VISIBLE LIGHT COMMUNICATION SIGNALS |
摘要 |
Methods and apparatus related to the detection of low-rate visible light communication (VLC) signals and the recovery of information communicated by the VLC signals are described. Various methods and apparatus are well suited for embodiments in which a device, e.g., a smartphone, including a camera which uses a rolling shutter. The rolling shutter facilitates the collection of different time snapshots of a received low rate time varying VLC signal with different pixel rows in the image sensor of a frame corresponding to different time snapshots. In some embodiments, demodulation is used to recover and identify a single tone being communicated in a frame from among a plurality of possible alternative tones that may be communicated, each different tone corresponding to a different set of information bits. |
申请公布号 |
EP2974080(A1) |
申请公布日期 |
2016.01.20 |
申请号 |
EP20140717003 |
申请日期 |
2014.03.06 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
JOVICIC, ALEKSANDAR;RICHARDSON, THOMAS, JOSEPH;KLIMEK, IVAN |
分类号 |
G03B7/00;H04B10/114;H04B10/116 |
主分类号 |
G03B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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