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Selective paging system and paging receiver therefor

  • US 5,043,718 A
  • Filed: 09/18/1989
  • Issued: 08/27/1991
  • Est. Priority Date: 09/20/1988
  • Status: Expired due to Term
First Claim
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1. A paging system which comprises:

  • a base station including means for transmitting a signal having a plurality of transmission frames and including a calling signal and a message signal; and

    a plurality of paging receives, each of said paging receivers includes means for receiving a calling signal from said base station, means for receiving a message signal next to a calling signal assigned to such paging receiver, and means for displaying said received message signal, said paging receivers being divided into groups, each of the groups being assigned with a specific one of said plurality of transmission frames;

    wherein said calling signal transmitting means of the base station includes means for transmitting an individual calling signal for individually calling one of said plurality of paging receivers by using the one specific transmission frame assigned to a group to which said one paging receiver belongs, and transmitting a simultaneous calling signal for simultaneously calling at least two of said plurality of paging receivers which belong to at least two of the groups by using a predetermined on e of said plurality of transmission frames; and

    wherein the receiving means of each of said plurality of paging receivers receives the individual and simultaneous calling signals for only the duration of said specific frame assigned to said paging receiver and the duration of said predetermined frame.

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