Patent
1979-11-26
1982-11-16
Popek, Joseph A.
179 1VL, H04H 102, H04R 102
Patent
active
043596002
ABSTRACT:
A low impedance digital attenuator to selectively attenuate an alternating current composite program signal composed of output program signals from different input channels in accordance with the number of active input signals where each input channel includes an input channel control device to provide an actuating signal when the channel is in selected operating mode and a program output signal. The actuating signals of the channels are summed and converted to a digital signal. The digital signal is supplied to a converter to generate a digital control signal where the relationship between the digital signal and the digital control signal is nonlinear. First and second digital to analog converters are provided to receive the digital control signal and a reference signal. The first digital to analog converter attenuates the composite program signal as a function of the digital control signal and provides an attenuated composite program signal. The second digital to analog converter receives a reference signal and provides a second output composite program. An amplifier having a selected gain is provided to receive the first and second outputs to provide an attenuated program signal.
REFERENCES:
patent: 4053870 (1977-10-01), Noe
Martin Hardison G.
Ponto Robert
Popek Joseph A.
Steutermann Edward M.
LandOfFree
Programable low impedance digital attenuators does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Programable low impedance digital attenuators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programable low impedance digital attenuators will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1436819