Communications: electrical – Traffic control indicator – Plural intersections under common central station control
Patent
1986-05-30
1989-08-15
Crosland, Donnie L.
Communications: electrical
Traffic control indicator
Plural intersections under common central station control
340902, 340904, 340906, 340907, 340908, G08G 107
Patent
active
048579211
ABSTRACT:
A digital control system for controlling the flow of traffic in selected directions in response to digital signals transmitted from a common transmitting control unit to multiple separate receiving traffic control units respectively associated with each controlled direction. The transmitting unit includes a transmitter and digital command code generator operative when actuated to transmit a character in the form of a digital signal specific for one of the receiving units. Each receiving unit includes traffic control indicators operative in different modes of display indications visible to traffic flowing in the direction to be controlled by that unit. Each receiving unit further includes a receiver operative to deliver demodulated characters based on codes transmitted by the transmitting unit, and the codes controlling a microprocessor programmed to process the received characters to initiate command outputs, and logic circuitry connected to receive said outputs and responsive thereto to display traffic control indications as determined by the local unit's demodulated characters, each unit keeping a model of what is being displayed by other units in the system and using it to prevent conflicting traffic control indications.
REFERENCES:
patent: 2829362 (1958-04-01), Terrill
patent: 2941185 (1960-06-01), Mullikin
patent: 3046521 (1962-07-01), Cantwell et al.
patent: 3159817 (1964-12-01), Hendricks et al.
patent: 3247482 (1966-04-01), Lesher
patent: 3754209 (1973-08-01), Molloy et al.
patent: 3784971 (1974-01-01), May
patent: 3867718 (1975-02-01), Moe
patent: 3906348 (1975-09-01), Willmott
patent: 4037201 (1977-07-01), Willmott
patent: 4390951 (1983-06-01), Marcy
patent: 4401969 (1983-08-01), Green et al.
patent: 4463339 (1984-07-01), Frick et al.
patent: 4573049 (1986-02-01), Obeck
Hendricks Jefferson D.
Houle Arthur J.
Kochanowsky Eugene W.
McBride William B.
McCarthy John A.
Crosland Donnie L.
Flagman, Inc.
LandOfFree
Digital traffic control 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 Digital traffic control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital traffic control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-124724