| 摘要 |
PURPOSE:To enable continuous measurement and observation of large-capacity digital data by a method wherein the digital data of measured signals are compressed and simplified and are stored successively in an external storage device, and subsequently they are read out, extended and observed. CONSTITUTION:At the time of storage, signals to be measured are inputted from a probe 9, divided into signals of 1 or 0 in an A/D conversion element 7 and then sent to a data compression circuit 4 under the control of an editing function control element 5, while it is checked in a trigger detection circuit 11 whether the trigger condition for coincidence of timing and phase is established or not. In the circuit 4, the amount of data is reduced and the data are sent to a buffer 3 and subsequently stored successively in an external storage device 8 under the control of an external storage device control element 6. At the time of reediting of data, a fresh trigger condition and others are inputted from an input device 2 and the control element 5 resets the trigger condition on the circuit 11 and makes the control element 6 start reading of the data stored in the device 8. These data are restored to the original data in a data extension circuit 10 and sent to the circuit 11 and it is checked whether the trigger condition is established or not. According to this constitution, sampling and reediting of large-capacity data can be executed. |
