Communications: electrical – Vehicle position indication – Map display
Reexamination Certificate
2005-06-28
2005-06-28
Crosland, Donnie L. (Department: 2636)
Communications: electrical
Vehicle position indication
Map display
C340S995120, C340S995190, C340S905000, C701S208000, C701S209000, C701S211000, C701S119000
Reexamination Certificate
active
06911918
ABSTRACT:
A real-time vehicular traffic flow display system employs groups of monitor stations positioned at spaced-apart locations along vehicular roadways, to sense the speed of traffic flow on a given portion of a route. Individual section stations each serve a sequential group of different monitor stations. Each monitor station senses the speed of vehicular traffic a given road portion and transmits corresponding information to an associated section station; each section station processes the received signals, and transmits them to display stations on board vehicles in addition to sending the signals to an optional geographic area central station. The signals transmitted to vehicles present information concerning traffic speed for each monitored portion of a road in addition to identifying the road portion; traffic speed information is processed to identify predetermined ranges of average speed in selected colors. Each vehicle station includes a Global Positioning System (GPS) receiver and visual display device with access to both the GPS including a database of local area road maps for display. All portions of each monitored route on a displayed map are shown in a color corresponding to the average speed of traffic monitored on the corresponding route portion. The current position of the vehicle station is shown on the map, and a “preferred” route from that location to an optionally selected destination is highlighted; both functions are accomplished in accordance with known GPS technology. An optional geographic area central station stores information not usually available in the on-board vehicle station, such as wide-area maps, and also receives traffic condition signals from various section stations including those beyond the range of the vehicle station. The central station correlates these two sources of information and makes the combined results available for separate access by users of the system.
REFERENCES:
patent: 5257023 (1993-10-01), Furuya
patent: 6466862 (2002-10-01), DeKock et al.
patent: 6662105 (2003-12-01), Tada et al.
patent: 2002/0120389 (2002-08-01), Fushiki et al.
Crosland Donnie L.
Hosmer & Reiter
Reiter, Esq. Howard S.
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