Limiting amplifier and method for amplifying an input signal

Details Limiting amplifier and method for amplifying an input signal Limiting amplifier and method for amplifying an input signal

2005-07-12

2005-07-12

Ton, My-Trang Nu (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C327S309000

Reexamination Certificate

active

06917233

ABSTRACT:
Disclosed is a limiting amplifier for amplifying an input signal including at least first portions having a first amplitude and second portions having a second amplitude being lower than said first amplitude. The amplifier includes a first peak detector for detecting the current maximum value in the input signal. The amplifier also includes a second peak detector for detecting the current minimum value in the input signal. The amplifier also includes determining means for providing a first decision that a variation in the input signal is due to a variation in a first amplitude and/or a second amplitude, or a second decision that a variation in the input signal is due to a transition from a first portion to a second portion, a third decision that a variation in the input signal is due to a transition from a second portion to a first portion, and controlling meats for either activating or inactivating one of the decreasing means and the increasing means based on the decision.

REFERENCES:
patent: 5798664 (1998-08-01), Nagahori et al.
patent: 5955918 (1999-09-01), Uno
patent: 6275541 (2001-08-01), Nagahori et al.
patent: 6292058 (2001-09-01), Ide et al.
patent: 6304357 (2001-10-01), Ohhata et al.
patent: 6657488 (2003-12-01), King et al.
patent: 0837570 (1998-04-01), None

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