Vehicle-emergency call system
First Claim
1. An emergency call system for vehicles on public highways comprising a radio transmitter located in each of one or more vehicles, a plurality of fixed road receivers spaced at predetermined distance along the highway and at least one assistance dispatching station remotely located from said receivers, said vehicle transmitter having means for selectively providing a high frequency output of predetermined coded information indicative of one or more emergency conditions, said road receivers having an input tuned to the output frequency of the vehicle transmitter and a signal generator responsive to the receipt at said input of said predetermined coded information of said vehicle transmitter, said signal generator producing a coded output signal indicative of the given road receiver combined with the coded information indicative of the emergency condition received from said vehicle transmitter, and means for transmitting the combined coded signal, said dispatching station having means for receiving, and decoding said combined coded signal into independent indicia signifying the emergency condition and the given road receiver.
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Accused Products
Abstract
An emergency call system for vehicles using the public highways is described. The system includes a radio transmitter located in each of one or more vehicles. This vehicle transmitter is provided with an output of predetermined information which is selectively operable by the vehicle operator or the passengers. Spaced at predetermined distances along the highway are a plurality of road receivers each having an input tuned to the output frequency of the vehicle transmitter and a coded-signal generator. The coded-signal generator has an output indicative of the road receiver and of the information output of the vehicle transmitter as it is received by the road receiver. This coded-signal is transmitted to a registering means remote from the receiver which decodes and displays the coded signal. As a result of which assistance and/or rescue can be promptly dispatched to the vehicle as a result of the known location of the road receiver.
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Citations
11 Claims
- 1. An emergency call system for vehicles on public highways comprising a radio transmitter located in each of one or more vehicles, a plurality of fixed road receivers spaced at predetermined distance along the highway and at least one assistance dispatching station remotely located from said receivers, said vehicle transmitter having means for selectively providing a high frequency output of predetermined coded information indicative of one or more emergency conditions, said road receivers having an input tuned to the output frequency of the vehicle transmitter and a signal generator responsive to the receipt at said input of said predetermined coded information of said vehicle transmitter, said signal generator producing a coded output signal indicative of the given road receiver combined with the coded information indicative of the emergency condition received from said vehicle transmitter, and means for transmitting the combined coded signal, said dispatching station having means for receiving, and decoding said combined coded signal into independent indicia signifying the emergency condition and the given road receiver.
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11. The method of providing emergency service for road vehicles comprising the steps of locating in each of the vehicles travelling on the road a transmitter capable of selective activation to provide and send out at high frequency a predetermined coded signal indicative of an emergency condition, locating a plurality of receivers at given intervals along the road, each of said receivers being tuned to the frequency of the vehicle transmitter and being operative at all times to receive said coded signal therefrom, combining the coded signal from the vehicle transmitter with a predetermined coded signal indicative of and produced by the road receiver in response to said received coded vehicle signal, and transmitting the combined coded signal to a remote dispatching station, translating and processing the coded signal received from the road receiver at said dispatching station to distinguish the predetermined coded signal of said vehicle and the predetermined coded signal of said road receiver and thereafter dispatching assistance to said vehicle in response to the information contained in the combined coded signal.
Specification