Signal-envelope display system for a digital oscilloscope

Details Signal-envelope display system for a digital oscilloscope Signal-envelope display system for a digital oscilloscope

G - Physics

01

R

375/34

G01R 13/00 (2006.01) G01R 13/20 (2006.01) G01R 13/34 (2006.01)

Patent

CA 1146684

-10- Abstract A signal-envelope display system for a digi- tal oscilloscope includes a memory for storing minimum and maximum signal values in adjacent storage loca- tions, an address counter for sequentially addressing the memory, and a control circuit for selecting the least significant bit of the address count signal arriving at the memory from the least significant bit of the address count signal, a fixed logical low, or a fixed logical high to thereby select every address location of the memory, or only the even locations, or only the odd locations over a given count cycle. The values retrieved from memory are converted to analog values and a vector generator connects the analog values to provide connected minimum and maximum values, connected maximum values, and connected mini- mum values for display. A signal-envelope display is provided by superposing the three displays.

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