Method for recording and reproducing a digital color video signal

A method of recording and reproducing a color video signal in a plurality of parallel tracks extending obliquely on a magnetic tape, said color video signal including a chrominance component and a luminance component, said method comprising the steps of:

• recording said color video signal in said plurality of parallel tracks, including the steps of:
• sampling said color video signal at a frequency which is at least three times the color sub-carrier frequency of the color video signal;
• converting the sampled color video signal into digitized form;
• and
• recording respective pluralities of continguous ones of the digitized samples which are arranged in a predetermined sequence sequentially in said plurality of parallel tracks, with each plurality of contiguous ones of the digitized samples corresponding to at least one cycle of the color sub-carrier of said color video signal;
• reproducing said color video signal from said plurality of parallel tracks, including the step of:
• separating the chrominance component of the reproducing sampled digitized signal in each track by filter means having a chrominance filter characteristic C=(1-Z.sup.-2)/2, where Z is a delay transfer characteristic of the filter means.

A method of recording and reproducing a color video signal in a plurality of parallel tracks extending obliquely on a magnetic tape, said color video signal including a chrominance component and a luminance component, said method comprising the steps of:

• recording said color video signal in said plurality of parallel tracks, including the steps of:
• sampling said color video signal at a frequency which is four times the color sub-carrier frequency of the color video signal;
• converting the sampled color video signal into digitized form;
• alternately separating contiguous ones of the digitized samples into first and second blocks;
• and
• recording respective pluralities of successive digitized samples of said first and second blocks sequentially in said plurality of parallel tracks;
• and
• reproducing said color video signal from said plurality of parallel tracks, including the step of:
• separating the chrominance component of the reproduced sampled digitized signal in each track by filter means having a chrominance filter characteristic C=1/4(-1+2Z.sup.-2 -Z.sup.4), where Z is a delay transfer characteristic of the filter means.

Apparatus for recording and reproducing a color video signal in a plurality of parallel tracks extending obliquely on a magnetic tape, said color video signal including a chrominance component and a luminance component, said apparatus comprising:

• a recording section for recording said color video signal in said plurality of parallel tracks, including:
• means for sampling said color video signal at a frequency which is at least three times the color sub-carrier frequency of the color video signal and for converting the sampled color video signal into digital form;
• and
• means for recording respective pluralities of the digitized samples which are arranged in a predetermined sequence sequentially in said plurality of parallel tracks, in which said digitized samples in each plurality of digitized samples are arranged in a contiguous manner, with each plurality of contiguous digitized samples corresponding to at least one cycle of the color sub-carrier of said color video signal;
• and
• a reproducing section for reproducing said color video signal from said plurality of parallel tracks, including:
• filter means for separating the chrominance component of the reproduced sampled digital signal in each track and having a delay transfer characteristic;
• in which said filter means has a chrominance filter characteristic C=(1-Z.sup.-2)/2, where Z is the delay transfer characteristic of the filter means.

Apparatus for recording and reproducing a color video signal in a plurality of parallel tracks extending obliquely on a magnetic tape, said color video signal including a chrominance component and a luminance component, said apparatus comprising:

• a recording section for recording said color video signal in said plurality of parallel tracks, including:
• means for sampling said color video signal at a frequency which is four times the color sub-carrier frequency of the color video signal and for converting the sampled color video signal into digital form;
• and
• means for alternately separating contiguous ones of the digitized samples into first and second blocks and for recording respective pluralities of successive digitized samples of said first and second blocks sequentially in said plurality of parallel tracks;
• and
• a reproducing section for reproducing said color video signal from said plurality of parallel tracks, including:
• filter means for separating the chrominance component of the reproduced sampled digital signal in each track and having a chrominance filter characteristic C=1/4(-1+2Z.sup.-2 -Z.sup.-4), where Z is a delay transfer characteristic of the filter means.