| 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 |
