TELEVISION SIGNAL PROCESSING CIRCUIT

摘要

A television signal processing circuit separates a television signal into a luminance signal and a chrominance signal, or interpolates the scanning lines of the television signal by using a video memory, such as a frame memory or a field memory. The circuit determines whether the television signal to be treated is standard or non-standard. Depending upon this determination, the circuit changes its operational mode so that it operates properly even when the television signal is different from a standard television signal and contains jitter in the time axis, as does a signal from a VTR. When the television signal is thus non-standard, the processing circuit operates without the video memory.