Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Analysis of complex waves
Patent
1988-06-09
1989-09-26
Noland, Tom
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Analysis of complex waves
324 78D, G01R 2316
Patent
active
048703486
ABSTRACT:
An apparatus and method of using markers for identifying particular points on a quasi-3-dimensional display, such as a color spectrogram display or a waterfall display of multiple frequency spectra on an electronic spectrum analyzer, so that amplitude, time, and frequency values associated with a particular point can be conveniently read out, and so that differences in amplitude, time, and frequency between two points can be easily calculated and presented to the user. Two markers whose positions are ascertainable are generated on the quasi-3-dimensional display and are made subject to operator control. One of these markers is positioned by the operator on a particular point of interest and the values associated with that location are then displayed for readout with greater precision and convenience than would otherwise be possible. A second marker is placed at a second point of interest and the differences in the values of amplitude, time, and frequency between the two points are calculated and displayed.
REFERENCES:
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patent: 4306186 (1981-12-01), Nakazawa et al.
patent: 4649496 (1987-03-01), Anderson et al.
patent: 4761640 (1988-08-01), Slavin
Scientific-Atlanta, Instrumentation Products Catalog, 1983, p. 139.
Hewlett-Packard, Model 3561A Dynamic Signal Analyzer Operating Manual, Nov. 1983, pp. 88-91.
Tektronix, 1240 Operator's Manual, 1982, p. 5-1 to 5-2.
Robert S. Wolff, The Visualization Challenge in the Physical Sciences, Jan. 1988, Computers in Science, vol. 2, No. 1, pp. 18 & 19.
Marconi Instruments, Ltd. 100 m Hz-400 MHz, Spectrum Analyzer and Display 2382/2380, 1986, pp. 1-3, 3-11, 3-12 and 3-46 to 3-48.
Morton Steven R.
Rowan Stuart H.
Smith Michael D.
Vistica Robert S.
Arana Louis M.
Griffith Boulden G.
Noland Tom
Tektronix Inc.
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