Waveform recording system

A waveform recording system for converting analog wave signals being measured to wave data, storing said wave data in memory, reading said wave data stored in said memory, and indicating the waveform of said wave data on a display, said waveform recording system being provided with compression means for producing compressed wave data from said wave data for each prescribed compression interval according to a prescribed data compression ratio and a memory controller for storing said wave data and said compressed wave data in said memory and sending said wave data and said compressed wave data to display means having said display, wherein said memory controller selects a set of wave data used for display from among said wave data in said compression interval containing said wave data's display start point and display end point and inputs said set of wave data to said compression means, and stores produced re-compressed wave data in said memory.

A waveform recording system for converting analog wave signals being measured to wave data, storing said wave data in memory, reading said wave data stored in said memory, and indicating the waveform of said wave data on a display, said waveform recording system being provided with at least one compression means for producing compressed wave data from said wave data for each prescribed compression interval according to a prescribed data compression ratio, and with a plurality of memory controllers each of which stores said wave data having a different sampling rate in said memory, wherein at least one of said plurality of memory controllers stores said compressed wave data along with said wave data in said memory, selects a part of said wave data used for display from among said wave data in said compression interval containing said wave data's display start point and display end point for input to said compression means, and stores the re-compressed wave data produced therein in said memory.