| 摘要 |
PURPOSE:To eliminate the influence of the distortion of a playback analog signal by measuring the timing between a data pulse signal generated at the zero-potential point of the playback analog signal and a distortion pulse signal based upon the distortion of the analog signal, and selecting a signal of intermediate timing. CONSTITUTION:The playback analog signal B of recorded information is supplied to comparators 1 and 2 and also sent to a data pulse generating circuit 3. Signals converted digitally by the comparators 1 and 2 are inputted to an AND circuit 7 through an OR circuit 6. The circuit 3 detects the zero-potential point of the input signal and outputs a data pulse signal F. A data pulse selecting ciruit 5 measures the timing between the normal data pulse signal in the signal F and the distortion pulse signal based upon the analog signal through a counter 51, and selects and inputs a pulse signal at the intermediate timing of the measured timing to another input. Thus, normal information is reproduced without any influence of the distortion of the reproduced analog signal of recording information. |
