Lighting device
EP4771767A1Pending Publication Date: 2026-07-08SIGNIFY HOLDING BV
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- SIGNIFY HOLDING BV
- Filing Date
- 2024-08-13
- Publication Date
- 2026-07-08
AI Technical Summary
Technical Problem
In digital communication over power lines, discrepancies in voltage pulse width due to variable rise and fall times can lead to decoding difficulties for the receiving side, especially when these variations are not constant.
Method used
A method and system that adjust the duration of low voltage pulses in a pulsed power supply based on detected parameters affecting transition times, such as high voltage levels and ambient temperature, to maintain consistent pulse widths and ensure accurate decoding.
Benefits of technology
The method enhances the robustness of power line coding by dynamically adjusting pulse widths to compensate for variations in voltage and temperature, thereby improving communication reliability and reducing errors.
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Smart Images
Figure EP2024072812_06032025_PF_FP_ABST
Abstract
A method for digital communication on a pulsed power supply having alternatingly high and low voltage, wherein a logic ZERO is communicated by a low voltage pulse having a first low voltage duration, tlow_zero, followed by a high voltage pulse having a first high voltage duration, thigh_zero, and a logic ONE is communicated by a low voltage pulse having a second low voltage duration, tlow_one, followed by a high voltage pulse having a second high voltage duration, thigh_one, the method comprising detecting a parameter value of at least one parameter affecting a transition time between high and low voltage, and adjusting said first low voltage duration, tlow_zero, and said second low voltage duration, tlow_one, based on said parameter value(s).
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