Itinerary monitoring system for storing a plurality of itinerary data points
AssigneeMicron Communications, Inc.
InventorsClifton W. Wood, Jr., John R. Tuttle
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Abstract
Method and apparatus for a base station or interrogator station to monitor the itinerary of one or more vehicles or other movable assets. Each vehicle or other movable object includes a satellite navigation receiver with circuitry for computing the geographic position of the object, and a memory for storing a history of positions computed at a number of different times during the itinerary of the object. Each movable object further includes a radio transceiver which transmits the stored position history to the base station.
Claims11
An itinerary monitoring apparatus attached to a mobile object, comprising:
- a satellite navigation receiver for computing the current geographic position of the mobile object;
- a memory;
- a controller for storing in the memory a plurality of successive itinerary data points at intervals throughout the itinerary of the mobile object, wherein each successive itinerary data point includes a successive position computed by the navigation receiver and a time of day corresponding to that position;
- and
- a radio transceiver for receiving and transmitting messages by radio communication, wherein the transceiver transmits an itinerary data message containing a number of the itinerary data points stored in the memory.
An itinerary monitoring apparatus enabling an interrogator to monitor the itinerary of a number of mobile objects, comprising:
- (a) at least one interrogator station including a first radio transceiver for transmitting interrogation messages and receiving data messages;
- and
- (b) a number of mobile objects, each mobile object being movable away from the interrogator station, wherein each mobile object includes:
- (i) a satellite navigation receiver for computing the current geographic position of the mobile object,
- (ii) a memory,
- (iii) a controller for storing in the memory a plurality of successive itinerary data points at intervals throughout the itinerary of the mobile object, wherein each successive itinerary data point includes a successive position computed by the navigation receiver and a time of day corresponding to that position, and
- (iv) a second radio transceiver for receiving and transmitting messages by radio communication, wherein the second transceiver transmits a radio message containing a number of the itinerary data points stored in the memory.
A method for monitoring the itinerary of a mobile object, comprising the steps of:
- the mobile object receiving signals from a navigation satellite;
- at regular intervals, the mobile object computing from the received signals the current geographic position of the mobile object;
- the mobile object storing in memory a plurality of successive itinerary data points at intervals throughout the itinerary of the mobile object, wherein each successive itinerary data point includes one of said computed positions and a time of day corresponding to that position;
- and the mobile object transmitting a radio signal containing a number of the itinerary data points stored in the memory.
Dependencies are inferred from the claim text.