Title:
WAVEFORM STORAGE DEVICE
Document Type and Number:
Japanese Patent JPH08101749
Kind Code:
A
Abstract:
PURPOSE: To efficiently store the feature part of the change of an input waveform.
CONSTITUTION: A differential circuit 20 generates a voltage proportional to the variation rate of the input waveform. An absolute value circuit 22 generates its absolute value voltage, and the frequency of the output signal (enable signal) of a V/F conversion circuit 26 is controlled by this absolute value voltage. Since an A/D converter 12 generates waveform data synchronously with the enable signal, more waveform data are generated in the part where the variation rate of the input waveform is larger.
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Inventors:
MIKI YASUHIKO
Application Number:
JP26189394A
Publication Date:
April 16, 1996
Filing Date:
September 30, 1994
Export Citation:
Assignee:
SONY TEKTRONIX CORP
International Classes:
G01R13/20; G06F3/05; (IPC1-7): G06F3/05; G01R13/20