Selectively called receiver

Details Selectively called receiver Selectively called receiver

1988-07-25

1990-09-04

Olms, Douglas W.

Telecommunications

Receiver or analog modulated signal frequency converter

With particular receiver circuit

455228, 34082544, H04B 116

Patent

active

049550802

ABSTRACT:
This selectively called receiver intermittently receives a frame signal including call information and transmitted through radio communication from a calling end on a battery saving basis and checks the presence of a call to the receiver. When the call to the receiver is detected, the receiver generates a ringing tone such as a bell sound. While a conventional selectively called receiver usually sets a reference level for proper binarization and reproduction of the frame signal and generates a ringing tone related to battery checking simultaneously, the inventive receiver performs the setting of the reference level and the generation of a ringing tone related to battery checking with different timings in order to stabilize the setting of the reference level.

REFERENCES:
patent: 4733100 (1988-03-01), Nusairat et al.
patent: 4777655 (1988-10-01), Numata et al.
patent: 4802240 (1989-01-01), Yamaguchi et al.

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