Synchronized measurement device using local area network with ethernet messaging

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United States of America Patent

PATENT NO 9924245
SERIAL NO

14705417

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Abstract

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A plurality of measurement devices have analog sensors that measure the dynamic signals of physical events, sample the data into digital format with time synchronized clocks and generate time stamped Ethernet messages that are sent to a remote host. The remote host has a master clock that evaluates decoded time stamped messages from the measurement devices and sends back a message with a time correction error signal relative to the master clock. This feedback signal is used by the measurement devices to correct a local clock for data sampling and new message generation. Eight wire cable and associated connectors are used to handle three channels of traffic, with four wires dedicated to Ethernet messages as one channel, another two wires dedicated to reset and other commands as a second channel and another two wires to transmit power from the host to the measurement devices as a third channel.

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Patent Owner(s)

Patent OwnerAddress
CRYSTAL INSTRUMENTS CORPORATION2370 OWEN STREET SANTA CLARA CA 95054

International Classification(s)

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  • 2015 Application Filing Year
  • H04L Class
  • 33706 Applications Filed
  • 25909 Patents Issued To-Date
  • 76.87 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances201520162017201820192020202120222023202420250255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Tang, Zhengge San Jose, US 9 27
Zhuge, James Q Palo Alto, US 11 23

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Patent Citation Ranking

  • 2 Citation Count
  • H04L Class
  • 17.38 % this patent is cited more than
  • 7 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges1588587498833816210536231053701 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +0500100015002000250030003500400045005000550060006500

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