Method for detecting a pulse-usable system
US6229471A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1999 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Mar 11, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/0006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for detecting a pulsed usable signal that particularly includes the highest frequencies and possesses a poor signal/noise ratio. First an analog, frequency-limited input signal that corresponds to the usable signal to be detected is formed from the analog input signal through analog filtering. This signal is then converted into a series of digital phase values through a phase/digital converter. First phase difference values are formed from these digital phase values by parallel or serial signal processing, and second phase difference valves are formed from these first difference values. Absolute values of the second difference values are then supplied via a digital low-pass filter to a comparator having hysteresis. There, an output signal that can be digitally utilized and corresponds to the pulsed usable signal is formed by predeterminable threshold values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.