Patent · US Expired

Method and apparatus for phase detection

US7313211B2 · kind B2 · utility

0Cited by

1References

31Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Peter Gregorius · Munich, DE
Edoardo Prete · Birkenfeld, DE
Paul Wallner · Prien am Chiemsee, DE

Key dates

Filing date	Apr 3, 2003
Grant date	Dec 25, 2007
Priority date	—
Expiry date	Dec 15, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH04L7/0083
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

The present invention relates to a method and apparatus for generating an output signal in dependence on a phase difference between two periodic signals. The present invention is particularly useful in phase locked loops and delay locked loops, in which a controllable oscillator or a controllable delay device is controlled on the basis of the phase difference determined by means of phase detection, in such a way that a control signal can be obtained, the phase lag or frequency of which has a firm relationship to the reference signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.