| 摘要 |
PURPOSE:To remove the noise component from a code signal and to prevent erroneous handling and remarkable deterioration in quality wihtout any influence of noise, by separating an input ternary analog signal into the code signal from a picture signal. CONSTITUTION:A demodulated ternary signal has its offset corrected by an offset correcting circuit 11 and noise components are removed from its waveform by a filter circuit 12. The ternary output of the filter circuit 12 is converted into a binary signal by a full-wave rectifying circuit 13. The output of the circuit 13 is compared with a reference voltage by a comparing circuit 14 to obtain a digital signal, which is inputted as the code signal to a picture processing circuit. The output of a circuit 16 is inputted to a delay time compensating circuit 17 to compensat delay regarding the 1st comparing circuit 14, and the output is recorded as a picture signal. |
