| Patent Number |
Title Of Patent |
Date Issued |
| 5663727 |
Frequency response analyzer and shaping apparatus and digital hearing enhancement apparatus and |
September 2, 1997 |
| A signal frequency analyzer and frequency response shaping apparatus using digital techniques and apparatus and methods using the same which is applicable, in one embodiment thereof, to the enhancement of hearing in hearing impaired persons. Analog techniques are used in another embodime |
| 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 |
