H - Electricity – 03 – G
Patent
H - Electricity
03
G
333/27
H03G 9/24 (2006.01) H04B 3/14 (2006.01)
Patent
CA 1137180
S P E C I F I C A T I O N TO ALL WHOM IT MAY CONCERN: BE IT KNOW that I, ADOLF HAASS, a citizen of Austria, residing at Eichelhaeherstrasse 54, 8000 Muenchen 60, Germany, have invented certain new and useful improvements in "A CIRCUIT ARRANGEMENT FOR AUTOMATIC DISTORTION CORRECTION OF A SIGNAL" and I do hereby declare that the following is a full, clear and exact description of the same, reference being had to the accompanying sheets of drawing and to the numerals of reference marked thereon which form a part of this specification. ABSTRACT OF THE DISCLOSURE A circuit arrangement for automatic distortion correction of a signal transmitted over a line having low-pass filter characteristics, employs a distortion corrector having a controllable high-pass filter and a controllable-gain amplifier. The distortion corrector includes the high-pass filter with a predetermined frequency characteristic and a first attenuator connected in series therewith in a first branch, and a two-terminal network of a predetermined frequency characteristic in a second branch. The controlled-gain amplifier includes a second attenuator and an amplifier connected in series therewith which effects a predetermined amplification. The current/voltage characteristics of the first and second attenuators are substantially identical and their attenuation depends on a signal which is derived from the distortion-correct signal by means of rectification and smoothing. - i -
323066
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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