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Portable terminal device for communicating with vehicle mounted equipment

  • US 20050119800A1
  • Filed: 11/18/2004
  • Published: 06/02/2005
  • Est. Priority Date: 11/18/2003
  • Status: Abandoned Application
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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