Digital waveform measuring apparatus having a shading-tone displ

Details Digital waveform measuring apparatus having a shading-tone displ Digital waveform measuring apparatus having a shading-tone displ

1989-06-20

1990-07-10

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Cathode ray

340793, 364487, G01R 1320, G01R 1326

Patent

active

049409310

ABSTRACT:
A timing signal generating circuit generates a timing signal for each sweep timing period. An address generating circuit generates an address corresponding to each sweep timing period and to the magnitude of the input signal, each time it receives the timing signal. An image memory stores data in the address generated by the address generating circuit. A computing unit performs, upon each receipt of the timing signal, a predetermined computation on that data stored in the image memory and generates a result of computation. The computation result represents the frequency of the same address generated for each sweep timing period. A display unit displays the input signal with a luminance level corresponding to the computation result.

REFERENCES:
patent: 3838209 (1974-09-01), Isuchiya et al.
patent: 4361850 (1982-11-01), Nishimura
patent: 4559535 (1985-12-01), Watkins et al.
Electronic Design-Oct. 18, 1984, pp. 165-178, F. D. Rampey, Art Porter and Mike Karin (Hewlett-Packard Co.).

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