CCD Delay line system for translating an analog signal

摘要

The use of a return-to-zero (RZ) sample and hold circuit between the CCD delay line circuit and the low-pass filter of the analog signal translation system provides a steeper high-frequency roll-off of the output from the low-pass filter than does a non-return-to-zero (NRZ) sample and hold circuit, and, therefore, produces less attenuation of high-frequency components of analog signal, such as the color-carrier of an NTSC color television signal.