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| Number | Title | Issue Date |
| 4423419 | Pulsed, pseudo random position fixing radio navigation method and system and the like This disclosure is concerned with a technique and apparatus for reducing CW and other inband interference in a broad bandwidth RF pulse navigation system to inobtrusive noise through the use of pulse-position random modulation, including, where desired, s... | 12/27/1983 |
| 4413282 | Television ghost signal detection during the video information interval A method and apparatus are presented for detecting the presence of ghost signal contamination of a video signal by examining the picture information interval of the video signal. A baseband video signal is detected and examined to detect signal transition... | 11/01/1983 |
| 4412350 | Method and apparatus for distinguishing between minimum and non-minimum phase fades The fade character of a transmitted radio signal comprising an amplitude or phase modulated double-sideband signal is determined from the algebraic sign of the fade induced modulation and the location of the fade notch (ωf) relative to the cen... | 10/25/1983 |
| 4403351 | Method and apparatus for distinguishing between minimum and non-minimum phase fades The fade character of a received double-sideband, phase coherent signal is determined from the location of the fade notch frequency, (ωF) relative to the center (ωc) of the received signal frequency spectrum and the phase between f... | 09/06/1983 |
| 4349915 | Minimization of multipath and doppler effects in radiant energy communication systems Apparatus is disclosed for reproducing transmitted information which is subject to multipath delay spread effects and doppler frequency-shift effects. The information is transmitted as a series of modulated information pulses of differing nominal frequenc... | 09/14/1982 |
| 4334314 | Transmission of time referenced radio waves The invention relates to the radio-electrical transmission of accurate timing-mark signals. A space-diversity electrical connection is formed between a station having one single antenna and a station having two antennae and one of the stations is equipped... | 06/08/1982 |
| 4066964 | Communication system This invention relates to a communication system wherein a plurality of stations can communicate with each other, without going through a central switchboard; and more particularly to such a communication system that is as private as possible -- the commm... | 01/03/1978 |
| 3996419 | Technique for minimizing multi-path distortion effects in video transmission A reference signal reflecting distortion characteristics caused by surrounding interference conditions is applied to transmitted television video or quasi-video information to effectively cancel the distortion characteristics of the incoming transmitted v... | 12/07/1976 |
