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Signal transmission between networked computers

  • US 6,003,092 A
  • Filed: 10/09/1997
  • Issued: 12/14/1999
  • Est. Priority Date: 02/12/1996
  • Status: Expired due to Term
First Claim
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1. A computer network comprising a base computer, at least one user computer and a bidirectional communications link between the base computer and the user computer, wherein the link from the base computer to the user computer is by way of an infra-red signal and the link from the user computer to the base computer is by way of a radio signal, wherein the base computer is operable to transmit data by way of the infra-red signal at the same time as the user computer transmits data by way of the radio signal, and wherein the user computer is operable to transmit on any of a plurality of radio channels, the base computer is operable to transmit instructions via said infra-red signal to the user computer regarding the channel to be used, and the user computer is operable to select one of the transmission channels in accordance with the received instructions.

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