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Method and arrangement for transmission of data with at least two radiation sources

Patent

EP2020102

Owner

Filing Date

May 14, 2007

Priority Date

May 24, 2006

Portfolio

New Tech - OSRAM

Intro

Are you interested in Visible Light Communication (VLC)? This invention protects the use of at least two radiation sources to achieve an increased transmission rate. The invention also covers the use of infrared or ultraviolet radiation sources. This makes it possible to use a phase relation between the radiation source for emitting non-visible light and at least one further radiation source for transmitting at least a portion of the data. This can result in improved reliability. Plus, ultraviolet radiation does not penetrate through glass. Nobody can "listen" to the communication from the outside. The patent is active in Germany, France, Italy, Spain and Switzerland. It has counterparts in China, Japan and Korea.

Claims

1. Method for transmission of data with at least two radiation sources, wherein - the radiation sources emit radiation with in each case a definable i...
  1. Method for transmission of data with at least two radiation sources, wherein - the radiation sources emit radiation with in each case a definable intensity that is substantially constant on average over time; - at least two of the intensities are varied with a respective carrier frequency; characterized in that - at least one portion of the data is transmitted by means of a phase relationship of the carrier frequencies of at least two of the radiation sources among one another.
  2. Method according to any of the preceding claims, wherein at least one radiation source is used for emission of visible light.
  3. Method according to Claim 1 or 2, wherein at least one radiation source is used for emission of non-visible light, in particular infrared or ultraviolet radiation.
  4. Method according to any of the preceding claims, wherein the intensities of at least one portion of the radiation sources are defined in such a way that the radiation is suitable for illumination.
  5. Method according to any of the preceding claims, wherein the intensities of at least two of the radiation sources are different.
  6. Method according to any of the preceding claims, wherein the spectra of the radiation sources substantially do not overlap.
  7. Method according to any of the preceding claims, wherein at least one radiation source is used, whose radiation substantially contains precisely one wavelength, in particular an LED.
  8. Method according to any of the preceding claims, wherein for at least one intensity, the variation extent to which it is varied is less than 10% of the intensity.
  9. Method according to any of the preceding claims, wherein at least one carrier frequency is greater than 100 Hz, in particular equal to 100 kHz.
  10. Method according to any of the preceding claims, wherein the carrier frequencies are identical.
  11. Arrangement for transmission of data with at least two radiation sources for emission of radiation with in each case a definable intensity that is substantially constant on average over time, which are configured in such a way that at least two of the intensities are varied with a respective carrier frequency and characterized in that at least one portion of the data is transmitted by means of a phase relationship of the carrier frequencies of at least two of the radiation sources among one another.
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Abstract

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CBX001
June 08, 2018

It seems inevitable that at some point it will eventually VLC will gain traction in the market. This patent could prove useful as robust and reliable VLC connectivity in busy environments is needed in high value or busy environments.. Once developed, more robust low cost connectivity using single or fewer LEDS could become viable. Technical: It is not clear (due to my limited German) with the short wavelengths, wether or not phase relationships alone is enough. However, the simultaneous use of different modulation schemas is likely a more valuable feature. Risks of higher end-to-end costs: due to need to orchestrate and coordinate the multiple LED sources to avoid the use of duplication modulation schemas. This added complexisty could create a need for common standards increasing NRE and R&D budgets, which all together would likely delay wide-scale VLC adoption. Security: it should not be assumed that the VLC solutions are always more secure than WiFi, especially in outdoors scenarios or where there are windows. As VLC becomes popular folks will likely invest to find ways to defeat the technology. Competitors and Barriers: there are several key stakeholders and large industries that could actively or passively choose to delay VLC especially where it competes with existing and established technologies. These companies will likely have committed significant amounts funds onto their near-term roadmaps..
1) Car-to-Car and transport; 2) Intelligent Street lighting and smart cities; 3) Emerging markets and rural areas.
Communication, IoT and personal devices companies....beyond 2020. GoodIP: Thank you for your sharing your business insights, CBX001.


World IP Day 26 April
May 22, 2018

Any application that requires transmission of large amounts of data can profit from this invention: video, bitcoin mining etc.


James M.
May 01, 2018

This patent could be very interesting for military or security applications. Since UV cannot penetrate walls and windows of a room, data transmission on basis of LED/UV cannot be sniffed out from the outside - compare that to WiFi!


Inventive Inventor
March 16, 2018

The nascent LiFi technology transmits data by switching one LED light bulb off and on. Think morse code going so fast, you cannot see the flickering. This patent takes the idea several steps further. It will be very easy to check if anyone is using this patent. But only time will tell if LiFi will use phase relationships to improve reliability or increase transmission speed. I like the patent's twist to include infrared or UV light. Check out this article to see how LiFi could implement infrared light: https://www.sciencealert.com/a-new-type-of-li-fi-has-reportedly-cracked-40-gigabits-per-second-100-times-faster-than-regular-wi-fi


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