ROADWAY SYSTEMS AND METHODS FOR CONDITIONALLY TRANSMITTING A RADIO SIGNAL TO VEHICLES, DEPENDING ON WHETHER A CERTAIN PERSON IS IN THE AREA
First Claim
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1. A system for operating with a vehicle, a changeable road sign, and a device carried by a human having a medical condition, the system comprising:
- a radio signal receiver configured to receive an identification signal from the device, at a time when the human is in the vicinity of the changeable road sign;
a demodulator configured to demodulate the identification signal into a digital signal;
a radio signal transmitter;
a memory, the memory storing a data structure associated with the changeable road sign, the data structure indicating a plurality of medical conditions; and
circuitry that compares the digital signal to the data structure, determines if the digital signal indicates a medical condition indicated by the data structure and, depending on a result of the determining, conditionally causes the changeable road sign to display the medical condition indicated by the digital signal and conditionally causes the transmitter to transmit a radio warning signal to the vehicle, the radio warning signal indicating the medical condition indicated by the digital signal.
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Abstract
Disclosed are alert systems and methods for a roadway.
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Citations
1 Claim
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1. A system for operating with a vehicle, a changeable road sign, and a device carried by a human having a medical condition, the system comprising:
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a radio signal receiver configured to receive an identification signal from the device, at a time when the human is in the vicinity of the changeable road sign; a demodulator configured to demodulate the identification signal into a digital signal; a radio signal transmitter; a memory, the memory storing a data structure associated with the changeable road sign, the data structure indicating a plurality of medical conditions; and circuitry that compares the digital signal to the data structure, determines if the digital signal indicates a medical condition indicated by the data structure and, depending on a result of the determining, conditionally causes the changeable road sign to display the medical condition indicated by the digital signal and conditionally causes the transmitter to transmit a radio warning signal to the vehicle, the radio warning signal indicating the medical condition indicated by the digital signal.
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Specification
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Current AssigneeInternational Business Machines Corporation
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Original AssigneeInternational Business Machines Corporation
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InventorsJohnson, Randy S., Northway, Tedrick N.
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Application NumberUS12/331,381Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current340/901CPC Class CodesG08G 1/07 Controlling traffic signalsG08G 1/0962 having an indicator mounted...
