Patent ID: 6215948
Filing Date: 2001-04-10
Classification: H04N,Y10S

Abstract:
A magnetic recording/reproducing apparatus, comprising:a VTR portion of a helical scan type mounting at least two or more of magnetic heads for recording/reproducing a FM modulated luminance signal and a down converted chrominace signal; anda digital processor for processing an video signal of the VTR, wherein a FM carrier frequency fwc corresponding to a white clip point of a luminance signal is set at a frequency less than 7 MHz after FM modulation in a recording signal processing, a sampling frequency fs of an A/D converter which converts a reproduced FM luminance signal into a digital signal by sampling at a frequency which is greater than two times of said fwc and is less than a maximum sampling frequency of said A/D converter, and said digital processor comprises:a FM demodulation processing circuit for FM demodulation processing the digital signal with said frequency fs; anda sampling rate converting circuit for converting the FM demodulation processed digital signal into a digital signal with a sampling rate of a frequency fck which is lower than said sampling frequency fs, wherein said frequency fs is set at 5 fs, fcs is a frequency of color sub-carrier, and said frequency fck is set at 4 fsc.