Communications: electrical – Visual indication – Using light emitting diodes
Reexamination Certificate
2006-10-17
2006-10-17
Trieu, Van T. (Department: 2636)
Communications: electrical
Visual indication
Using light emitting diodes
C340S815470, C701S207000
Reexamination Certificate
active
07123159
ABSTRACT:
A position dependent information retrieval system is disclosed including a light source having a driver and an encoder. The driver and the encoder are coupled to the light source so that the light source produces a modulated light signal in accordance with a predetermined signature. The system also includes a receiver having a photosensitive detector capable of detecting the modulated light signal and a decoder capable of decoding the predetermined signature. A controller is communicatively coupled to the receiver, a memory and output device. The controller is arranged to receive the decoded predetermined signature, based upon the decoded predetermined signature, obtain at least one localized message in the memory, and output the localized message using the output device.
REFERENCES:
patent: 5416535 (1995-05-01), Sato et al.
patent: 5416627 (1995-05-01), Wilmoth
patent: 5926301 (1999-07-01), Hirt
patent: 6437892 (2002-08-01), Fang et al.
patent: 6445369 (2002-09-01), Yang et al.
patent: 6548967 (2003-04-01), Dowling et al.
patent: 6687206 (2004-02-01), Masui
patent: 6807478 (2004-10-01), Giannopoulos et al.
patent: 0744839 (1996-11-01), None
Giannopoulos Demetri
Wacyk Ihor Terence
Koninklijke Philips Electronics N. V.
Trieu Van T.
LandOfFree
Position dependent information retrieval system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Position dependent information retrieval system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Position dependent information retrieval system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3669005