Waveform information display apparatus

A waveform information display apparatus comprising:

• an A/D converting unit for converting an analog input signal into digital waveform data;
• a unit for storing said digital waveform data into a memory;
• a unit for dividing said digital waveform data stored in said memory into a plurality of time segments, and generating compressed display data for each of said time segments so as to display a waveform on a screen;
• a first operating unit for specifying a property to be observed upon a waveform of said analog input signal;
• an arithmetic processing unit for extracting said property specified through said first operating unit, from said digital waveform data for each of said time segments, and carrying out an arithmetic processing in accordance with said extracted property so as to obtain a value expressing said specified property in said time segment;
• and
• a display control unit for controlling a waveform display portion in each of said time segments to be displayed on said screen in accordance with said compressed display data for each of said time segments, and displaying said waveform display portion in a state in which said value expressing said property extracted by said arithmetic processing unit is reflected on said waveform display portion.