NTSC / ARM-M (NTSC / PAL-M) discrimination circuit and discrimination method of broadcasting system

摘要

An entity / ephemeris discrimination circuit for discriminating a broadcasting system signal recorded on a tape and a broadcasting system discrimination method using the same.;A recording method automatic discrimination circuit for a tape according to the present invention is a video data recorder for reproducing a signal recorded by an NTSC or an ARM system, comprising: a broadcasting system discrimination signal for discriminating NTSC or ARM-And a phase shifter connected to the phase shifter for detecting a phase difference between the phase-recovered color signal and the reference color signal outputted from the phase shifter, A waveform shaping unit connected to the detector and the phase detector to discriminate between a state in which the output of the phase detector is synchronized with the switching of the head switching pulse and a state in which the output does not fluctuate,;The NTSC / ARM-MB system discrimination circuit according to the present invention automatically discriminates the NTSC and ARM-MB broadcasting systems, thereby making it easy for the user to use the apparatus and to simplify the hardware configuration.