Title:
IN-SYSTEM GLOBAL CLOCK PROVIDING METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/070719
Kind Code:
A1
Abstract:
An in-system global clock providing method and device. The method comprises: in-system terminals connect to each other via a channel, each of the terminals respectively communicate with a clock source finally via a signal recording unit; the clock source emits a marked signal to the network, and the signal recording unit records a current emission time T (0) of the marked signal. Owing to different distances thereof from the clock source, each of the terminals sequentially receives the marked signal and returns the same; the returning signal sequentially returns along the network to the signal recording unit, and the signal recording unit sequentially records a time T (n) of each returning signal. The signal recording unit can measure a time delay of each terminal signal and the clock source signal and, using the time delay as calibration parameter, can ensure that the terminals are at an identical time reference, and the length of a clock connection line from each terminal to the clock source does not need to be controlled, and a clock routing does not require special consideration, thus avoiding the difficulties of system assembly, calibration, maintenance and extension caused by a large number of wires.
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Inventors:
FANG LEI (CN)
ZHANG BO (CN)
ZHANG BO (CN)
Application Number:
PCT/CN2015/092602
Publication Date:
May 12, 2016
Filing Date:
October 23, 2015
Export Citation:
Assignee:
WUHAN DIGITAL PET CO LTD (CN)
International Classes:
H04L7/00
Foreign References:
| US20030040328A1 | 2003-02-27 | |||
| CN101459502A | 2009-06-17 | |||
| CN104320240A | 2015-01-28 | |||
| US8279897B2 | 2012-10-02 |
Other References:
See also references of EP 3217590A4
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