Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
JITTER PULSE TRAIN ANALYZER AND JITTER PULSE TRAIN ANALYSIS METHOD
Document Type and Number:
Japanese Patent JP2018179548
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To enable a jitter pulse train to be automatically analyzed efficiently with high accuracy.SOLUTION: The jitter pulse train analyzer comprises: means for calculating the frequency spectrum of pulse intervals; threshold processing means for removing a spectrum component whose value is equal to or lower than a given level; means for discriminating whether the pulse train is a cyclic jitter or a random jitter; means for determining the number of different kinds of pulse intervals obtained by sorting for the case of random jitters as a position number, the position number being an inverse of a frequency that takes a peak value in a spectrum for the case of cyclic jitters; means for calculating a histogram of pulse intervals for the case of cyclic jitters and determining each of pulse intervals obtained by sorting for the case of random jitters as a position, the position being the value of each of pulse intervals selected as many as the position number; and means for discriminating whether the case of cyclic jitters is a sinusoidal wave jitter or a sawtooth wave jitter on the basis of the number of increasing or decreasing pulse intervals.SELECTED DRAWING: Figure 1

Inventors:
OGINO YOSHIHIRO
Application Number:
JP2017074353A
Publication Date:
November 15, 2018
Filing Date:
April 04, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TOSHIBA CORP
TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORP
International Classes:
G01R23/173; G01R23/16; G01R29/02; G01S7/292
Domestic Patent References:
JPH0783980A1995-03-31
JPS6427673U1989-02-17
JP2008514961A2008-05-08
JP2005070041A2005-03-17
JP2000188617A2000-07-04
JP2011247887A2011-12-08
Attorney, Agent or Firm:
Kurata Masatoshi
Nobuhisa Nogawa
Takashi Mine
Naoki Kono
Ukai Ken