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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Gerdes; Richard C.
Address:
Tucson, AZ
No. of patents:
7
Patents:












Patent Number Title Of Patent Date Issued
5165017 Automatic gain control circuit in a feed forward configuration November 17, 1992
An input signal representing speech is preamplified, filtered, and fed foward in parallel to Automatic Gain Control (AGC) circuitry and to a gain controllable amplifier. The AGC detects the peak absolute value of the input signal, charing a capacitor in accordance with such detections. T
5124706 Analog to digital and digital to analog signal processors June 23, 1992
Improved analog to digital and digital to analog signal processors are disclosed wherein a quick approximation of the input signal to the signal processor is attained and a more accurate approximation is later attained for the input signal. For the analog to digital conversion, a standar
5021786 Analog to digital and digital to analog signal processors June 4, 1991
Improved analog to digital and digital to analog signal processors are disclosed wherein a quick approximation of the input signal to the signal processor is attained and a more accurate approximation is later attained for the input signal. For the analog to digital conversion, a standar
4989219 Midlevel carrier modulation and demodulation techniques January 29, 1991
Several techniques are disclosed for producing modulation of a carrier signal wherein each transition of the modulated carrier signal includes a midrange level and/or two midrange characteristics, the level and/or ratio of the two midrange characteristics representing data carried by tha
4680633 Circuit and method for producing accurate dc restored video waveform, horizontal sync pulses, an July 14, 1987
A composite video signal is input to a DC restore circuit and a sync separator circuit, the output of which is connected to a sync decoder circuit. The DC restore circuit includes a negative sensing peak sample and hold circuit that generates a first reference voltage equal to the sy
4613974 Method and system for modulating a carrier signal September 23, 1986
A system and method for modulating a carrier signal wherein occurrence of the peaks in the modulated carrier signal conveys clocking information and each transition of a modulated carrier signal includes two midrange characteristics, the ratio of which represents data carried by that
3968486 Analog to digital converter July 6, 1976
An electronic analog to digital converter utilizing a plurality of analog comparators, all comparators receiving a common analog input and separate respective reference voltages for comparison. The outputs of the comparators provide respectively the digital word output of the analog to










 
 
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