Data carrier system
First Claim
1. A data carrier system comprising:
- a plurality of portable data carriers which are distinguishable from each other;
a writing means for writing operation data of a vehicle into a memory area of the data carriers in which the operation data can be written under the condition that the data carriers are set at a predetermined position of the vehicle, and for writing the operation data of the vehicle corresponding to the operation data written into a memory area of a particular data carrier in a first memory means;
a management means for reading the operation data stored in the data carriers, and for erasing the operation data stored in the data carriers; and
a lost information writing means for writing the identification of a lost data carrier, into a replacement data carrier,wherein the writing means writes the operation data of the vehicle stored in the first memory means corresponding to the lost data carrier into the replacement data carrier when the loss information which shows the identification of the lost data carrier is stored in the replacement data carrier, and the operation data is made to correspond to the replacement data carrier.
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Accused Products
Abstract
An electrical control unit for a vehicle successively writes operation data of the vehicle in a transponder provided in a key used for starting the vehicle. At the same time, the electric control unit successively writes the same operation data in a memory area of a non-volatile memory corresponding to a key used for starting the engine. When the key is lost, the engine is started under the condition that the identification of the lost key is written in a replacement key. Then, the electric control unit of the vehicle writes operation data stored in the non-volatile memory corresponding to the lost key in the replacement key. At the same time, the electric control unit of the vehicle moves the operation data to a memory area corresponding to the replacement key. Accordingly, when the operation data is read from the replacement key, operation data stored in the lost key can be managed.
126 Citations
6 Claims
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1. A data carrier system comprising:
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a plurality of portable data carriers which are distinguishable from each other; a writing means for writing operation data of a vehicle into a memory area of the data carriers in which the operation data can be written under the condition that the data carriers are set at a predetermined position of the vehicle, and for writing the operation data of the vehicle corresponding to the operation data written into a memory area of a particular data carrier in a first memory means; a management means for reading the operation data stored in the data carriers, and for erasing the operation data stored in the data carriers; and a lost information writing means for writing the identification of a lost data carrier, into a replacement data carrier, wherein the writing means writes the operation data of the vehicle stored in the first memory means corresponding to the lost data carrier into the replacement data carrier when the loss information which shows the identification of the lost data carrier is stored in the replacement data carrier, and the operation data is made to correspond to the replacement data carrier. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification
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- Resources
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Current AssigneeKabushiki Kaisha Tokai RIKA Denki Seisakusho
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Original AssigneeKabushiki Kaisha Tokai RIKA Denki Seisakusho
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InventorsAoki, Hisashi, Koga, Shinichi
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Primary Examiner(s)Cuchlinski, Jr., William A.
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Assistant Examiner(s)MANCHO, RONNIE M
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Application NumberUS09/307,778Time in Patent Office568 DaysField of Search701/35, 701/36, 701/32, 701/30, 340/286.01, 340/426, 340/825, 340/825.31, 340/438, 290/33-35, 307/10.3, 307/10.2, 307/10.4, 307/10.5US Class Current701/35CPC Class CodesG07C 5/0858 wherein the data carrier is...
