Portable terminal device for communicating with vehicle mounted equipment
First Claim
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1. A portable terminal device for communicating with a vehicle mounted equipment, comprising:
- a microcomputer which comprises a connector for exchanging signals with the vehicle mounted equipment, an erasable programmable read only memory which stores a firmware of the microcomputer, and a memory card slot; and
a memory card which can be fitted into the memory card slot so as to communicate with the microcomputer, the memory card having a firmware layer which stores a second firmware and a data storage layer which stores the signals output from the microcomputer through the memory card slot;
wherein the microcomputer is programmed to replace the firmware stored in the erasable programmable read only memory with the second firmware stored in the firmware layer of the memory card in response to an input of a predetermined command.
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Abstract
A portable terminal device (100) comprising a microcomputer (2) and a memory card (5) is mounted on a vehicle for collecting operation information of the vehicle. The microcomputer (2) has a flash read only memory (23) storing a firmware of the terminal device (100), and a memory card slot (6). The memory card (5) comprises a firmware layer (5a) storing a second firmware and a data storage layer (5c) for recording the operating information. The microcomputer (2) replaces the firmware in the flash read only memory (23) with the second firmware, thereby rendering the firmware replacement easy.
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Citations
18 Claims
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1. A portable terminal device for communicating with a vehicle mounted equipment, comprising:
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a microcomputer which comprises a connector for exchanging signals with the vehicle mounted equipment, an erasable programmable read only memory which stores a firmware of the microcomputer, and a memory card slot; and
a memory card which can be fitted into the memory card slot so as to communicate with the microcomputer, the memory card having a firmware layer which stores a second firmware and a data storage layer which stores the signals output from the microcomputer through the memory card slot;
wherein the microcomputer is programmed to replace the firmware stored in the erasable programmable read only memory with the second firmware stored in the firmware layer of the memory card in response to an input of a predetermined command. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification