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Controlled device storing multiple drivers that judges and downloads a particular driver corresponding to a controller's operating system having an identical or greater version number

  • US 6,138,178 A
  • Filed: 01/27/1998
  • Issued: 10/24/2000
  • Est. Priority Date: 01/29/1997
  • Status: Expired due to Term
First Claim
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1. A data communication method in a data communication system in which a controller and a controlled device controlled by the controller perform data communication via a communication channel, comprising the steps of:

  • storing driver software of a plurality of types in a first storage area of the controlled device;

    judging whether driver software corresponding to an operating system having the same name as that of the operating system of the controller and the same or later version number as the version number of the operating system of the controller, is stored in the first storage area of the controlled device;

    reading, in response to judging that driver software corresponding to the operating system is stored in the first storage area, the driver software from the first storage area;

    transmitting data, which represents the driver software that has been read out, from the controlled device to the controller; and

    storing the transmitted data representing driver software in a second storage area of the controller.

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