Erasable data acquisition and storage instrument

Details Erasable data acquisition and storage instrument Erasable data acquisition and storage instrument

1989-02-28

1990-11-27

Teska, Kevin J.

Boots, shoes, and leggings

324113, 364480, 364900, G06F 1520, G06F 1214

Patent

active

049741675

ABSTRACT:
A digital oscilloscope includes an acquisition system for digitizing an input signal to produce and store in memory a waveform data sequence representing the input signal. A display system within the instrument reads out and processes the data stored in the memory to produce a waveform display representing the input signal. The instrument responds to an input "erase" command from a user by overwriting the waveform data sequence stored in memory with a predetermined data sequence defining an easily recognizable display pattern. The oscilloscope thereafter performs a checksum operation on overwritten portions of memory to determine whether the overwrite operation was successful, and displays an indication of overwrite success on its screen.

REFERENCES:
patent: 4072851 (1978-02-01), Rose
patent: 4393500 (1983-07-01), Imazeki et al.
patent: 4517663 (1985-05-01), Imazeki et al.
patent: 4654849 (1987-03-01), White, Jr. et al.
patent: 4703433 (1987-10-01), Sharrit
patent: 4805151 (1989-02-01), Terada et al.
patent: 4812996 (1989-03-01), Stubbs
patent: 4878194 (1989-10-01), Nakatsugawa et al.

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