No title available

• US 3,718,899 A
• Filed:
• Issued:
• Est. Priority Date: 04/05/1971
• Status: Expired due to Term

• Current Assignee: N/A
• Original Assignee: N/A
• Time in Patent Office: Days
• US Class Current: 340/993
• CPC Class Codes: G08G 1/127 to a central station ; Indicators in a central station

Abstract

A SATELLITE RECEIVER SELECTION SYSTEM FOR A VEHICLE MONITORING SYSTEM WHERE THE VEHICLE TO BE MONITORED TRAVELS ALONG A PREDETERMINED ROUTE. THE VEHICLE INCLUDES STORAGE CIRCUITRY FOR STORING INFORMATION SIGNALS INDICATIVE OF ITS POSITION AS IT MOVES ALONG THE ROUTE, AND A TRANSMITTER IN THE VEHICLE TRANSMITTS THE INFORMATION SIGNALS AT PARTICULAR TIMES. A NUMBER OF SATELLITE RECEIVERS ARE LOCATED ALONG THE ROUTE FOR RECEIVING THE VEHICLE'"'"''"'"'S TRANSMITTED INFORMATION SIGNALS. THESE SATELLITE RECEIVERS ARE COUPLED TO A CENTRAL CONTROL STATION THAT INCLUDES A MEMORY OR STORAGE DEVICE CONTAINING INFORMATION AS TO THE SCHEDULE AND POSITION OF THE VEHICLE AS IT TRAVELS ALONG THE PREDETERMINED ROUTE. THE INFORMATION SIGNALS ARE COUPLED FROM THE SATELLITE RECEIVER STATIONS TO THE CENTRAL CONTROL STATION WHERE THEY ARE COMPARED WITH THE STORED INFORMATION TO DEVELOP A COMPARISON SIGNAL THAT IS USED TO SELECTIVELY OPERATE THE SATELLITE RECEIVER NEAREST THE VEHICLE AT THE TIME OF THE NEXT TRANSMISSION FROM THE VEHICLE.

D R A W I N G

Claims