Device and method for reducing the amplitude range of signals re

Details Device and method for reducing the amplitude range of signals re Device and method for reducing the amplitude range of signals re

1986-01-08

1987-12-08

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358166, 358 27, H04N 968

Patent

active

047121327

ABSTRACT:
An embodiment of the device comprises: three subtracters, three multipliers and a correction coefficient determination device. The subtracters and multipliers make it possible to obtain three signals, whose values are multiplied by a same coefficient, in order that they retain the same ratios as the values of the signals supplied to the input of the device. The device for determining a correction coefficient comprises means for determining which of the input signals has the highest instantaneous value at each time, in order to apply thereto a predetermined, non-linear transformation and for supplying a correction signal which is applied to the multipliers.

REFERENCES:
patent: 3684825 (1972-08-01), Dischert
patent: 4499486 (1985-02-01), Favreau
patent: 4602277 (1986-07-01), Guichard

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