Traffic signal control system employing universal...

Details Traffic signal control system employing universal... Traffic signal control system employing universal...

2005-01-25

2005-01-25

Swarthout, Brent A. (Department: 2636)

Communications: electrical

Traffic control indicator

C340S911000, C340S913000

Reexamination Certificate

active

06847307

ABSTRACT:
A traffic signal control system employing universal coordinated time of GPS as time base. The control system includes a core system for receiving Universal Coordinated Time (UTC) data of GPS and incorporating longitude and latitude data so as to convert the data to local time. This time is used as common time base for all traffic signal system. The control system further comprises a basic input/output system and a selective secondary system. The present system is a high stability disperse type traffic signal control system.

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patent: 5625556 (1997-04-01), Janky et al.
patent: 6133854 (2000-10-01), Yee et al.
patent: 6192007 (2001-02-01), Aoshima
patent: 6370159 (2002-04-01), Eidson
patent: 6525995 (2003-02-01), Diehl et al.

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