Synchronized measurement device using local area network with ethernet messaging
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Mar 20, 2018
Issued Date -
N/A
app pub date -
May 6, 2015
filing date -
May 6, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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.
First Claim
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Family
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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CRYSTAL INSTRUMENTS CORPORATION | 2370 OWEN STREET SANTA CLARA CA 95054 |
International Classification(s)
- H04L:TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAP....
- H04Q:SELECTING
- G06F:ELECTRIC DIGITAL DATA PROCESSING
- G01P:MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, D....
- H04W:WIRELESS COMMUNICATION NETWORKS
- G01D:MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VAR....
- G01V:GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING ....

- 2015 Application Filing Year
- H04L Class
- 33706 Applications Filed
- 25909 Patents Issued To-Date
- 76.87 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Tang, Zhengge | San Jose, US | 9 | 27 |
# of filed Patents : 9 Total Citations : 27 | |||
Zhuge, James Q | Palo Alto, US | 11 | 23 |
# of filed Patents : 11 Total Citations : 23 |
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Patent Citation Ranking
- 2 Citation Count
- H04L Class
- 17.38 % this patent is cited more than
- 7 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 20, 2025 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 20, 2029 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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