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Data communication system and portable data processing terminal used therein

  • US 5,778,205 A
  • Filed: 04/25/1996
  • Issued: 07/07/1998
  • Est. Priority Date: 04/26/1995
  • Status: Expired due to Term
First Claim
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1. A data communication system for communicating data between a portable data processing terminal and a data processing apparatus, the system comprising:

  • an interface unit connected to said data processing apparatus;

    means, provided in said portable data processing terminal, for detecting a connection between said portable data processing terminal and said interface unit;

    mode setting means, provided in said portable data processing terminal, for setting said portable data processing terminal to a communication mode;

    means, provided in said portable data processing terminal, for outputting a communication request to said data processing apparatus until said data processing apparatus responds to the communication request after said mode setting means sets the communication mode; and

    means, provided in said data processing apparatus, for executing data communication with said portable data processing terminal via said interface unit in response to the communication request.

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