Method and equipment for the reception of digital signals
US5600681A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 1994 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | Mar 2, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3052
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
With this method and equipment the sensitivity of receivers, whose gain control criterion is a constant noise signal level, can be controlled independently of the received data signal, so that the reception of long datastreams is possible. For this purpose a diode (D1) is provided, whose anode is connected to a voltage source, and whose cathode is connected with a current source (Q4) and with the cathode of a second diode (D2) whose anode is connected to a capacitor (C12). A voltage is applied across the capacitor (C12) which is smaller in the rest state than a second voltage applied via the first diode (D1), so that the second diode (D2) is reverse-biased. After reception of a data signal a discharge pulse (EP) is generated dependent on an output of a signal detector, through which the second voltage is reduced to a value that is smaller than the first voltage. In this way the capacitor (C12) is discharged to an extent such that the charge removed corresponds to the charge given to the capacitor (C12) during reception of a data signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.