Data communication device

Details Data communication device Data communication device

2006-01-04

2010-02-02

Bayard, Emmanuel (Department: 2611)

Pulse or digital communications

Synchronizers

C375S359000

Reexamination Certificate

active

07656979

ABSTRACT:
A data communication device comprises an input circuit (DRTC) that converts external data (XDT) into internal data (IDT) on the basis of a sampling signal (SP). A synchronization circuit (SYNC) provides the sampling signal (SP) on the basis of an oscillator signal (OS) and a synchronization value (SV). The synchronization value (SV) is representative of a number of cycles of the oscillator signal (OS) contained within a time interval for a unit of external data. The synchronization value (SV) is an initial value (IV) during an initial synchronization phase and a measured value (MV) during a measurement-based synchronization phase. A control circuit (IFC) carries out a calibration step in which the initial value (IV) is a preprogrammed reset value (RV) and in which the measured value (MV) is stored as a calibration value (CV). The control circuit (IFC) applies the calibration value (CV) as the initial value (IV) in subsequent initial synchronization phases.

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patent: 2004/0081053 (2004-04-01), Kojima
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patent: 2006/0045215 (2006-03-01), Ballantyne et al.
European Patent Office Communication dated Jun. 3, 2005 (5 pages).

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