Clock-free activation circuit
US8548098B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2005 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | May 1, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0087
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A circuit for recovering data from an incoming data stream according to one embodiment includes a capacitor and a substantially constant current source for charging the capacitor. A subcircuit generates a signal causing the capacitor to discharge upon detecting a first type of transition in the incoming data stream, the capacitor re-charging upon being at least partially discharged. A comparator compares a voltage on a node coupled to the capacitor to a reference voltage, the comparator outputting a first signal if the voltage on the node is higher than the reference voltage and outputting a second signal if the voltage on the node is lower than the reference voltage, the first signal being associated with a first logic value, the second signal being associated with a second logic value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.