| 摘要 |
PURPOSE:To omit an A/D converter and a D/A converter and to store an analog waveform by means of a simple logical circuit constitution by storing data for correcting a difference point between a reproduced analog waveform and an analog wavefrom to be stored. CONSTITUTION:Data stored by a storage means 8 and sent by a comparing means 10 is applied to filter means 9, its wavefrom is shaped and the shaped waveform is sent to a terminal B and the comparing means 10 as a reproduced analog waveform. The comparing means 10 compares an analog waveform to be stored inputted from a terminal A with the reproduced analog waveform and sends data for allowing the reproduced analog waveform to coincide with the analog waveform to be stored to the storage part 8. An address forming means 7 returns an address to be sent to the storage means 8 to an initial value at a prescribed period and counts up the address again and the analog signal to be stored synchronized with the prescribed period is gradually and faithfully traced and highly accurately stored in the storage means 8. |
