| 摘要 |
PURPOSE:To display a relative easy-to-see waveform by displaying all picture elements between a picture element specified by data read out of a storage circuit and a picture element in the last column. CONSTITUTION:An analog input signal is inputted through an A-D converting circuit A to a storage circuit M, which writes a row corresponding to the peak value of each column in an address corresponding to each column on a screen as data. A timing pulse generating circuit TP, on the other hand, generates a vertical and a horizontal synchronizing signal to scan on the screen of a CRT display D, and data is read out synchronizing with said scan. A delay circuit DL delays the read data and supplies it to a comparing circuit CM simultaneously with data read next. The comparing circuit CM generates an output when the contents Lv of a row specifying counter VC are between the data from the storage circuit M and data from the delay circuit DL, thereby displaying a picture element at the current scanning position of a beam. |
