US3737847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic signal control system
Assignee: Omron Corp
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Filing: 1971-03-25
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Granted: 1973-06-05
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Expires: 1991-03-25
Abstract
Abstract An apparatus for centrally controlling traffic over a wide geographical area. A master controller collects traffic information from traffic signal stations throughout the area at predetermined intervals, and stores this information in its associated memory, along with various operating time parameters associated with the traffic signal operation at each traffic signal station. A central processor reads and evaluates the traffic information stored in the master controller and continuously updates the operating time parameters. The master controller controls the traffic signals on the basis of their operating time parameters.
Inventors
- 👤 T Kato
- 👤 T Ichihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:58
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/07; G08G1/081
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
258 words
An apparatus for centrally controlling traffic signals at different locations within a wide geographical area comprising: a first control means for controlling the condition of traffic signals, including means for communicating between said first control means and a plurality of signal terminal stations, each of said signal terminal stations having at least one associated traffic signal, the terminal stations collecting traffic information and communicating said traffic information to said first control means, said first control means further including means for storing data, said data being utilized by said first control means for controlling the condition of said traffic signals, said data including operating time data for each of said traffic signals, an elapsed time, and traffic information received from said traffic terminal stations, said first control means controlling the condition of said traffic signals on the basis of said stored operating time data; means for processing said traffic information received from said signal terminal stations, said processing means including means for updating said operating time data stored in said storage means on the basis of said processed traffic information; a second control means connected to said first control means and said processing means for controlling communication between said first control means and said processing means; means connected to said first control means for generating timing signals; means included in said first control means and actuated by said timing means for comparing said elapsed time data with said operating time data, and means actuated by said timing means for updating by one said elapsed time data at predetermined intervals.
Claim 2
Independent Claim
258 words
An apparatus for centrally controlling traffic signals at different locations within a wide geographical area comprising: a first control means for controlling the condition of traffic signals, including means for communicating between said first control means and a plurality of signal terminal stations, each of said signal terminal stations having at least one associated traffic signal, the terminal stations collecting traffic information and communicating said traffic information to said first control means, said first control means further including means for storing data, said data being utilized by said first control means for controlling the condition of said traffic signals, said data including operating time data for each of said traffic signals, an elapsed time, and traffic information received from said traffic terminal stations, said first control means controlling the condition of said traffic signals on the basis of said stored operating time data; means for processing said traffic information received from said signal terminal stations, said processing means including means for updating said operating time data stored in said storage means on the basis of said processed traffic information; a second control means connected to said first control means and said processing means for controlling communication between said first control means and said processing means; means connected to said first control means for generating timing signals; means included in said first control means and actuated by said timing means for comparing said elapsed time data with said operating time data, and means actuated by said timing means for updating by one said elapsed time data at predetermined intervals.
Claim 3
Dependent Claim
38 words
An apparatus according to claim 1, wherein said detected traffic information stored in said master controller are applied to said processing unit every predetermined unit period of time, so that said processing unit processes said operating time data.
Claim 4
Dependent Claim
40 words
An apparatus according to claim 2, wherein said processing means includes means for actuating said comparing means at the conclusion of the most recent updating of said operating time data stored in said first control means by said processing means.
References Cited (Backward Citations)
US3363185A
Cited
US3528054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |