Differential high frequency level detector and data restoration circuit including squelch offset and slicing offset
US5436934A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 1992 |
| Grant date | Jul 25, 1995 |
| Priority date | — |
| Expiry date | Aug 13, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/1027
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An improved circuit topology for implementing level detection and data restoration operations on an input sinusoid. The differential high-frequency level detector and data restoration circuits of the present invention each include a differential input having a pair of circuit nodes for receiving a differential input signal. A slicing offset network is disposed to generate first and second differential signals in response to the differential input signal. The present invention further includes first and second comparators for respectively providing latch set and latch reset signals in response to the first and second offset differential signals. The data restoration circuit of the present invention further includes a latch operative to synthesize a recovered data waveform in accordance with pairs of set and reset signals. Similarly, the inventive level detector includes a latch which utilizes set and reset signals to generate a level detection signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.