Signal processor for converting playback signal in NTSC standards to video signal used in PAL system and method of signal processing used therein

A method of controlling a video signal processor, comprising the steps of:

• a) receiving an input signal representative of pieces of video information formatted in the standards of National Television System committee;
• b) decoding said input signal to a digital video signal with a vertical synchronous frequency and a horizontal synchronous frequency satisfying a standard of Phase Alternation by Line Color Television System;
• and
• c) encoding said digital video signal into an analog video signal with a color sub-carrier frequency satisfying another standard of said Phase Alternation by Line Color Television System and the following equation
• fsc={(1135/4)+(1/521)}f.sub.H
• where fsc is said color sub-carrier frequency and f.sub.H is said horizontal synchronous frequency.

A video signal processor for outputting an analog PAL signal, comprising:

• an MPEG decoder supplied with an NTSC signal and outputting a decoded digital signal;
• a video encoder connected to said MPEG decoder and converting said digital signal to an analog PAL signal;
• and
• a signal generator connected to said decoder and said video encoder and supplying a signal synchronous with a horizontal synchronous signal (f.sub.H) to said decoder and supplying a signal synchronous with a color sub-carrier signal (fsc) to said video encoder, such that the relationship between f.sub.H and fsc is defined by
• fsc={(1135/4)+(1/521)}.times.f.sub.H.