Data limiter for a radio pager

Details Data limiter for a radio pager Data limiter for a radio pager

1989-01-23

1990-05-29

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307555, H03K 508

Patent

active

049298518

ABSTRACT:
A data limiter for a radio pager is described in which an analog input signal including a data signal is compared in a comparator with a threshold voltage which is adjusted by means of a feedback network. The network consists of transconductance amplifiers having predetermined input offset voltages related to the amplitude of the analog signal which monitor the departure of the analog signal from a reference voltage to provide output currents which are integrated by an integrator and applied as the threshold voltage to the comparator and as the reference voltage to the transconductance amplifiers.

REFERENCES:
patent: 3576449 (1971-04-01), Howell
patent: 4204260 (1980-05-01), Nysen
patent: 4571547 (1986-02-01), Day
patent: 4590394 (1986-05-01), Pace
patent: 4602374 (1986-07-01), Nakamura et al.
patent: 4631737 (1986-12-01), Davis et al.
patent: 4866261 (1989-09-01), Pace
Radio Shack Dictionary of Electronics, editor Rudolf F. Graf, published by Howard W. Sams & Co., Inc., Indianapolis, Ind., 1975, pp. 111 and 610.

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