Patent · US Active

Continuous skew adjust

US11043946B1 · kind B1 · utility

3Cited by

9References

20Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Andreas H. A. Arp · Nufringen, DE
Douglas J. Malone · Pleasant Valley, US
Thomas Makowski · Pfullingen, DE
Michael V. Koch · Ehningen, DE

Key dates

Filing date	Jan 30, 2020
Grant date	Jun 22, 2021
Priority date	—
Expiry date	Jan 30, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH03K2005/00078
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A method for adjusting a skew between a second clock signal and a first clock signal is provided. The second clock signal has been propagated from a first clock source through a second clock tree. The second clock tree comprises a programmable delay line that induces a delay. The method comprises at least one iteration of: measuring a skew between the second clock signal and the first clock signal, comparing an absolute difference of the measured skew and a sum of delay changes initiated in a time window preceding the measurement with a target skew, and initiating a delay change of the delay induced by the programmable delay line in the second clock tree depending on a result of the comparison.

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