Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Rectangular or pulse waveform amplitude control
Patent
1994-10-05
1996-06-11
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Rectangular or pulse waveform amplitude control
327306, 327339, 327560, 330278, H03G 300, H03L 500
Patent
active
055259227
ABSTRACT:
An automatic gain and level control output circuit. The inventive circuit (10) includes a first component (12) for multiplying an input signal by a first reference signal to provide a gain adjusted signal. The input signal is level shifted by a second reference signal by a second component (16) to provide a level adjusted signal. The gain and level adjusted signals are compared to third and fourth reference signals by third and fourth components (26 and 28), respectively. The outputs of the third and fourth components (26 and 28) are combined to provide a first signal. Either the output of the third component (26) or the fourth component (28) is selected to provide a second signal having a first or a second level respectively. The first signal is integrated to provide the first reference signal and the fourth signal is integrated to provide the second reference signal.
REFERENCES:
patent: 3145379 (1964-08-01), Caspers
patent: 3281530 (1966-10-01), Sennhenn
patent: 4229703 (1980-10-01), Bustin
patent: 4451797 (1984-05-01), Bains, Jr.
patent: 4573033 (1986-02-01), Kolodin
patent: 4782285 (1988-11-01), Bristol et al.
patent: 5302860 (1994-04-01), Fischer et al.
Hayes Robert S.
Masarik David M.
Callahan Timothy P.
Denson-Low Wanda K.
Hughes Electronics
Sales Michael W.
Ton My-Trang N. V.
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