DC restoration for synchronization signals
US9118305B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2013 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Aug 22, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0296
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one example implementation, the present disclosure provides a direct current (DC) restoration circuit for restoring the DC component of a synchronization signal provided over an alternating current (AC) coupled link from a transmitting circuit to a receiving circuit. During a period of inactivity in the synchronization signal, the synchronization signal may experience a drift towards the common mode, and may affect the ability for the synchronization signal to properly trigger the receiving circuit. The DC restoration circuit is configured to hold the synchronization signal steady during the period of inactivity, and allow the AC component of the synchronization signal pass through to the receiving circuit during the period of activity to alleviate the problem of baseline drift in the synchronization signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.