Title:
TEST MEASURING DEVICE AND METHOD AND COMPUTER READABLE MEDIUM
Document Type and Number:
Japanese Patent JP2013044747
Kind Code:
A
Abstract:
To easily confirm effects of a FFT window function.
A display screen 12 of an oscilloscope is divided into a time domain display area 80 in which a time domain waveform 82 of an input signal is displayed, and a frequency domain display area 84 in which a frequency domain waveform 86 of the input signal is displayed. The input signal is correlated to a time criterion. The frequency domain waveform 86 corresponds to a selected temporal term of the time domain waveform 82. A spectrum time indicator 90 graphically indicates the temporal term, used for generating the frequency domain waveform 86, and a FFT window shape.
Inventors:
GARY J WALDO
DOBYNS KENNETH P
DOBYNS KENNETH P
Application Number:
JP2012177993A
Publication Date:
March 04, 2013
Filing Date:
August 10, 2012
Export Citation:
Assignee:
TEKTRONIX INC
International Classes:
G01R13/20; G01R23/16; G01R23/173
Domestic Patent References:
| JP2007205735A | 2007-08-16 | |||
| JP2001235489A | 2001-08-31 | |||
| JP2007199030A | 2007-08-09 | |||
| JP2007205736A | 2007-08-16 |
Foreign References:
| US20130044134A1 | 2013-02-21 |
Other References:
平坂文男, 実験音声学のための音声分析, JPN6016014673, 31 March 2009 (2009-03-31), pages 118, ISSN: 0003525459
小野浩司, シミュレーティングで学ぶアナログ＆ディジタルフィルタ入門, JPN6016014675, 25 December 1999 (1999-12-25), pages 188 - 190, ISSN: 0003525460
戸田浩: "「高品質化への解析＆加工プログラミング」", Ｃ ＭＡＧＡＺＩＮＥ, vol. 第９巻第１０号（通巻９７号）, JPN6016014677, 1 October 1997 (1997-10-01), pages 35 - 37, ISSN: 0003525461
小野浩司, シミュレーティングで学ぶアナログ＆ディジタルフィルタ入門, JPN6016014675, 25 December 1999 (1999-12-25), pages 188 - 190, ISSN: 0003525460
戸田浩: "「高品質化への解析＆加工プログラミング」", Ｃ ＭＡＧＡＺＩＮＥ, vol. 第９巻第１０号（通巻９７号）, JPN6016014677, 1 October 1997 (1997-10-01), pages 35 - 37, ISSN: 0003525461
Attorney, Agent or Firm:
Yamaguchi International Patent Office