Information updating method of vehicle-mounted control apparatus, update information communication system, vehicle-mounted control apparatus, and information management base station apparatus
First Claim
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1. An information updating method for vehicle-mounted control units, said method comprising:
- when an updating event occurs, an information management base station transmitting a query to all vehicles under its management regarding whether or not a vehicle-mounted control unit that needs to be updated by the information management base station unit is present thereon;
said information management base station selecting vehicles to be updated based on the replies from the individual vehicles; and
said information management base station updating only the selected vehicles by updated contents divided into packets being transmitted to respective vehicle-mounted control units.
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Abstract
When an updating event occurs, an information management base station unit inquires all the vehicles under its management about the presence or absence of vehicle-mounted control units to be updated. Based on replies from the individual vehicles, the information management base station unit selects the vehicles to be updated, and then it automatically updates them via wireless communication.
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Citations
15 Claims
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1. An information updating method for vehicle-mounted control units, said method comprising:
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when an updating event occurs, an information management base station transmitting a query to all vehicles under its management regarding whether or not a vehicle-mounted control unit that needs to be updated by the information management base station unit is present thereon; said information management base station selecting vehicles to be updated based on the replies from the individual vehicles; and said information management base station updating only the selected vehicles by updated contents divided into packets being transmitted to respective vehicle-mounted control units. - View Dependent Claims (2, 3, 4)
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5. An information updating method for vehicle-mounted control units, comprising:
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an information management base station unit transmitting information relating to an information update via wireless communication; receiving the transmitted information on a vehicle; said vehicle determining whether or not the information update is necessary for the vehicle, based on the information received by the vehicle; said vehicle transmitting the determination result from the vehicle to the information management base station unit; said information management base station unit transmitting update information divided into a packet to said vehicle via wireless communication only if the information update is necessary for the vehicle; and reprogramming the vehicle-mounted control unit based on the transmitted update information. - View Dependent Claims (6, 7)
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8. An update information communication system comprising:
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an information management base station unit; and a vehicle that can bidirectionally and wirelessly communicate with said information management base station;
wherein,when an updating event occurs, the information management base station unit transmits a query to all the vehicles under its management regarding the presence or absence of vehicle-mounted control units that need to be updated; said information management base station selects vehicles to be updated based on replies from the individual vehicles; and said information management base station updates only those vehicles that need to be updated, by updated contents divided into packets being transmitted to respective vehicle-mounted control units via wireless communication. - View Dependent Claims (9)
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10. An update information communication system comprising:
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an information management base station unit; a vehicle having a vehicle mounted control unit; and a bidirectional wireless communication link between said information management base station unit and the vehicle; wherein; information relating to an information update is transmitted from the information management base station via wireless communication, and is received by the vehicle; whether or not an information update is necessary for the vehicle is determined at the vehicle end based on the received information; the determination result is transmitted from the vehicle to the information management base station unit; the update information is transmitted from the information management base station unit to the vehicle, wherein the update information is transmitted in a packet to the vehicle-mounted control unit via wireless communication only if the information update is necessary for the vehicle; and information of the vehicle-mounted control unit is rewritten. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification