Invention Grant
- Patent Title: Recovering timing from a self-clocking coded light signal
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Application No.: US14785447Application Date: 2014-04-17
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Publication No.: US09768867B2Publication Date: 2017-09-19
- Inventor: Constant Paul Marie Jozef Baggen , Paul Henricus Johannes Maria Van Voorthuisen
- Applicant: PHILIPS LIGHTING HOLDING B.V.
- Applicant Address: NL Eindhoven
- Assignee: PHILIPS LIGHTING HOLDING B.V.
- Current Assignee: PHILIPS LIGHTING HOLDING B.V.
- Current Assignee Address: NL Eindhoven
- Agent Meenakshy Chakravorty
- Priority: EP13164495 20130419
- International Application: PCT/EP2014/057852 WO 20140417
- International Announcement: WO2014/170419 WO 20141023
- Main IPC: H04B10/116
- IPC: H04B10/116 ; H04L25/49 ; H04L7/00 ; H04L7/033 ; H04L7/04

Abstract:
A coded light receiver comprising a sensor for receiving coded light, a filter, and a timing and data recovery module. The coded light comprises a signal whereby data and timing are modulated into the light according to a self-clocking coding scheme. The filter is arranged to match a template waveform of the coding scheme against the received signal, thereby generating a pattern of filtered waveforms each corresponding to a respective portion of the data, and the timing and data recovery module recovers the timing from the signal based on characteristic points of the filtered waveforms. The timing and data recovery module is configured to do this by separating the filtered waveforms into different sub-patterns in dependence on the data, and to recover the timing by processing each of the sub-patterns individually based on the characteristic points of each sub-pattern.
Public/Granted literature
- US20160087720A1 RECOVERING TIMING FROM A SELF-CLOCKING CODED LIGHT SIGNAL Public/Granted day:2016-03-24
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