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Electronic engineering / Horology / Synchronization / Network Time Protocol / Radio clock / Clock synchronization / Time server / Ultrix / Phase-locked loop / Measurement / Clocks / Time


Precision Synchronization of Computer Network Clocks1,2,3 David L. Mills Electrical Engineering Department University of Delaware Abstract This paper builds on previous work involving the Network Time Protocol, which is
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Document Date: 1998-07-29 12:50:08


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File Size: 253,65 KB

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City

Ultrix / Oslo / Newark / /

Company

Sun Microsystems / Inter-Range Instrumentation Group / Lawrence Berkeley National Laboratory / Digital Equipment / /

Country

Norway / United States / /

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Event

FDA Phase / Product Issues / /

Facility

University of Delaware / IRIG facility / National Institute of Science / CLK facility / SIGIO facility / Computer Network Clocks1 / 2 / 3 David L. Mills Electrical Engineering Department University / /

IndustryTerm

software improvements / Internet time servers / synchronization protocol / Internet Standard / interface hardware / satellite time services / unreliable networks / real-time applications / serial port processing / clock selection algorithms / software components / later processing / software interfaces / engineered software refinements / present technology / input processing / Internet mail / telephone networks / software processing / kernel software / clock selection algorithm / software distributions / code path delay accounting / carrier-detect lead / speed networks / driver software / input/output driver software / system kernel software / minimal processing / clock filter algorithm / Internet experience / high software priority level / Internet Protocol / interpolation algorithm / update processing / computing / precision timekeeping equipment / software malfunction / typical Internet paths / /

OperatingSystem

Unix / SunOS / OSF/1 / Unix system / BSD / Ultrix / /

Organization

National Science Foundation / Computer Network Clocks1 / 2 / 3 David L. Mills Electrical Engineering Department University / University of Delaware / National Institute of Science and Technology / NASA Ames Research Center / Northeastern Center for Engineering Education / U.S. Navy Surface Weapons Center / Research Projects Agency / Electrical Engineering Department / /

Person

Roy LeCates / Van Jacobson / Allan Variance / /

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Position

driver / zs driver / NTP clock driver / clock driver / companion clock driver / Author / modified audio driver / companion clock driver for the NTP daemon / modified serial port driver / BSD audio driver / modified driver / /

Product

Harman On Time Radio / peers / DEC89 / /

ProvinceOrState

Delaware / /

Technology

Alpha / technology of synchronizing clocks / 21064 processor / MD5 algorithms / Unix / IP / 3000 processor / GPS / Unix operating system / operating system / UDP / NTP algorithms / Ethernet / SPARC processor / UART chip / NTP Local Clock Model The clock selection algorithm / ASCII / clock selection algorithms / condensation / Unix system / Network Time Protocol / synchronization protocol / clock filter algorithm / virtual memory / interpolation algorithm / present technology / UART / /

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