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Multi-channel personal messaging unit

  • US 5,537,415 A
  • Filed: 11/08/1994
  • Issued: 07/16/1996
  • Est. Priority Date: 11/08/1994
  • Status: Expired due to Term
First Claim
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1. A personal data communications device for concurrently communicating with primary and secondary digital communication networks, the personal data communications device comprising:

  • a receiver which is alternatively switchable to first and second communications channels, the first communications channel being used by the primary digital communication network in accordance with a reserved time slot protocol having discrete time slots for data transmissions to the personal data communications device, the second communications channel being used by the secondary digital communication network;

    channel selection logic connected to the receiver to switch the receiver to the first communications channel during the discrete time slots and to the second communications channel during other times;

    a data processor connected to communicate through the receiver with the primary digital communication network when the receiver is switched to the first communications channel and with the secondary digital communication network when the receiver is switched to the second communications channel.

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