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Data processing and communications device with interchangeable modules

  • US 7,641,117 B2
  • Filed: 06/27/2005
  • Issued: 01/05/2010
  • Est. Priority Date: 02/25/1991
  • Status: Expired due to Fees
First Claim
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1. A data communications system comprising:

  • a base module comprising first processing circuitry and first interface circuitry; and

    a plurality of communications modules interchangeably couplable to the base module, each communications module comprising second processing circuitry, second interface circuitry and at least one of a plurality of wireless transceivers of differing types;

    wherein the base module receives a selected one of the plurality of communications modules in an engaging position that communicatively couples the first and second interface circuitry and enables the base module to communicate via the selected communications module, characterized in that the first processing circuitry supports communication of data via at least one of the plurality of wireless transceivers regardless of which of the plurality of communications modules is selected.

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