Title:
METHOD AND SYSTEM FOR ASYNCHRONOUS LAMP IDENTIFICATION
Document Type and Number:
WIPO Patent Application WO/2011/001392
Kind Code:
A3
Abstract:
The invention relates to embedding data into a luminance output generated by an illumination system comprising a light source and a controller. The controller is configured to embed data by modulating a drive signal applied to the light source with an information signal comprising a shifted base code and a synchronization code. The synchronization code serves to provide synchronization for the receiver, while the shifted base code serves to carry the embedded data. A cyclic phase shift that is applied to a base code to generate the shifted base code corresponds to particular data, such as, for example, light source identification,that needs to be embedded into the luminance output of the illumination system. In this manner, data may be embedded into the luminance output generated by a light source without requiring synchronization of this light source with other light sources.
Inventors:
SCHENK TIM CORNEEL WILHELMUS (NL)
FERI LORENZO (NL)
TALSTRA JOHAN CORNELIS (NL)
FERI LORENZO (NL)
TALSTRA JOHAN CORNELIS (NL)
Application Number:
PCT/IB2010/052998
Publication Date:
March 17, 2011
Filing Date:
June 30, 2010
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
SCHENK TIM CORNEEL WILHELMUS (NL)
FERI LORENZO (NL)
TALSTRA JOHAN CORNELIS (NL)
SCHENK TIM CORNEEL WILHELMUS (NL)
FERI LORENZO (NL)
TALSTRA JOHAN CORNELIS (NL)
International Classes:
H05B37/02; H05B44/00
Domestic Patent References:
| WO2006111930A2 | 2006-10-26 | |||
| WO2009010916A2 | 2009-01-22 | |||
| WO2009010926A2 | 2009-01-22 | |||
| WO2009136309A2 | 2009-11-12 | |||
| WO2007125477A2 | 2007-11-08 |
Attorney, Agent or Firm:
BEKKERS, Joost, J., J. et al. (AE Eindhoven, NL)
Download PDF: