Abstract
This paper provides a description of our Network Time Interface M-Module (NTI) supporting high-accuracy external clock synchronization by hardware. The NTI is built around our custom Universal Time Coordinated Synchronization Unit VLSI chip (UTCSU-ASIC), which contains most of the hardware support required for interval-based clock synchronization: A state and rate adjustable clock device with a high resolution, automatically maintained accuracy intervals, interfaces to GPS receivers, and various timestamping features. Designed for maximum network controller and CPU independence, our NTI provides a turn-key solution for adding synchronized clocks to distributed real-tune systems built upon hardware with M-Module interfaces.
This research is part of our project SynUTC, which has been supported by the Austrian Science Foundation (FWF) under grant P10244-ÖMA, the OeNB under grant 6454, the BMWV under contract Z1.601.577/2-IV/B/9/96, and the START programme Y41-MAT.
This is a preview of subscription content, log in via an institution to check access.
Preview
Unable to display preview. Download preview PDF.
References
P.H. Dana. Global Positioning System (GPS) Time Dissemination for Real-Time Applications, J. of Real-Time Systems 12(1), p. 9–40, January 1997.
M. Horauer, U. Schmid, K. Schossmaier. NTI: A Network Time Interface M-Module for High-Accuracy Clock Synchronization, TR 183/1-76, Department of Automation, Vienna University of Technology, January 1997.
H. Kopetz, W. Ochsenreiter. Clock Synchronization in Distributed Real-Time Systems, IEEE Transactions on Computers C-36(8), p. 933–939, August 1987.
H. Kopetz, A. Krüger, D. Millinger, A. Schedl. A Synchronization Strategy for a Time-Triggered Multicluster Real-Time System, Proc. of the 14th IEEE Symposium on Reliable Distributed Systems, Bad Neuenahr, Germany, 13–15 September 1995.
B. Liskov. Practical uses of synchronized clocks in distributed systems, Distributed Computing 6(4), p. 211–219, 1993.
J. Lundelius, N. Lynch. An Upper and Lower Bound for Clock Synchronization, Information and Control 62(2/3), p. 190–204, June 1984.
Manufacturers and Users of M-Modules (MUMM) e.V., M-Module Specification, April 1996.
D.L. Mills. Internet Time Synchronization: The Network Time Protocol, IEEE Transactions on Communications 39(10), p. 1482–1493, October 1991.
U. Schmid, K. Schossmaier. Interval-based Clock Synchronization, J. of Real-Time Systems 12(2), p. 173–228, March 1997.
K. Schossmaier, U. Schmid, M. Horauer, D. Loy. Specification and Implementation of the Universal Time Coordinated Synchronization Unit (UTCSU), J. of Real-Time Systems 12(3), p. 295–327, May 1997.
B. Simons, J. Lundelius-Welch, N. Lynch. An Overview of Clock Synchronization, in B. Simons, A. Spector (eds.): Fault-Tolerant Distributed Computing, Springer LNCS 448, p. 84–96, 1990.
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1998 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Horauer, M., Schmid, U., Schossmaier, K. (1998). NTI: A Network Time Interface M-module for high-accuracy clock synchronization. In: Rolim, J. (eds) Parallel and Distributed Processing. IPPS 1998. Lecture Notes in Computer Science, vol 1388. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-64359-1_772
Download citation
DOI: https://doi.org/10.1007/3-540-64359-1_772
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-64359-3
Online ISBN: 978-3-540-69756-5
eBook Packages: Springer Book Archive