Radio selective calling receiver and radio selective calling rec

Details Radio selective calling receiver and radio selective calling rec Radio selective calling receiver and radio selective calling rec

1997-10-23

2000-05-30

Trost, William G.

Telecommunications

Radiotelephone system

Special service

455 312, 34082544, H04Q 714

Patent

active

060700696

ABSTRACT:
A radio selective calling reception system for limiting recipients participating in a group call limited by setting up a radio selective calling receiver, includes a reception unit, a switch, a numerical string search unit, a numerical string storage unit, a message storage unit, a message unit, a display unit, and a controller connected to each of the foregoing. By manipulating the switch, a message received as a result of a conference call is demodulated by the reception unit, and its included numerical string is extracted by the controller and compared with numerical strings stored in the numerical string storage unit by the numerical string search unit. As a result of a search, a received message is stored in the message storage unit, and the message reception notification operation is performed by the message unit and a loudspeaker connected to the message unit. Since an arbitrary numerical string for sub-group identification is set in the radio selective calling receiver to limit reception for a group call, the storing of unnecessary messages is eliminated, and the memory space provided for message storage is more effectively employed. Accordingly, the load placed on a message transmitter is reduced, and superior radio selective calling receiver is provided for a user. Furthermore, a sub-group is flexibly set or altered and a waste of a finite source, such as individual numbers, is eliminated.

REFERENCES:
patent: 4872005 (1989-10-01), DeLuca et al.
patent: 5093659 (1992-03-01), Yamada
patent: 5436620 (1995-07-01), Ide
patent: 5450071 (1995-09-01), DeLuca et al.
patent: 5604492 (1997-02-01), Abdul-Halim
patent: 5635914 (1997-06-01), Petreye et al.

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