Video signal recording system enabling limited bandwidth recording and playback

The system of claim 18, wherein said decoder comprises:

• means for reproducing said folded luminance signal;
• means coupled to said luminance signal reproducing means for unfolding said luminance signal and producing said wideband luminance signal;
• means for reproducing said composite signal including said chrominance signal and said motion representative signal;
• means, coupled to said chrominance and motion representative signal reproducing means, for producing said motion representative signal and said chrominance signal;
• and means, responsive to said wideband luminance signal and said chrominance signal for producing a composite video signal.

A video signal recording and playback system for recording a full bandwidth video signal on a limited bandwidth medium and reproducing a previously recording video signal, comprising:

• an input terminal for receiving a composite video signal;
• encoding means, coupled to said input terminal, for producing a luminance signal having attenuated high frequencies folded into low frequencies and bandwidth limited to said limited bandwidth, and a combination signal including a chrominance component and a motion representative component;
• means for recording said luminance signal;
• means for recording said combination signal;
• luminance signal playback circuitry for reproducing a previously recorded limited bandwidth luminance signal, representing a full bandwidth luminance signal, representing a full bandwidth luminance signal, having attenuated high frequency components folded into low frequency components;
• combination signal playback circuitry for reproducing a previously recorded combination signal including a previously recorded chrominance signal and a previously recorded motion representative signal;
• and
• decoder means, coupled to said luminance and combination signal playback circuitry, for extracting said previously recorded motion representative signal, unfolding said folded attenuated high frequency components and reproducing said previously recorded full-bandwidth luminance signal, and producing a composite video signal consisting of said full bandwidth luminance signal and said previously recorded chrominance signal.

A video signal system, comprising:

• means for receiving a composite video signal exhibiting a first bandwidth;
• encoding means, coupled to said input terminal, for producing a luminance signal having attenuated high frequency components folded into low frequencies and a second bandwidth substantially less than said first bandwidth, and a signal including a chrominance component and a motion component;
• means for recording said luminance signal;
• and
• means for recording said signal including said chrominance component and said motion component.

A backward compatible video signal recording process, comprising:

• receiving a composite video signal exhibiting a first bandwidth;
• producing a luminance signal having attenuated high frequencies folded into low frequencies within a limited bandwidth narrower than said first bandwidth, and a signal including a chrominance component and a motion component;
• recording said luminance signal;
• and
• recording said signal including chrominance and motion component.

A process for reproducing a full bandwidth video signal previously recorded on a limited bandwidth medium, comprising:

• reproducing a luminance signal previously recorded as a limited bandwidth signal having attenuated high frequency components folded into low frequency components;
• providing a reproduced composite signal by reproducing a previously recorded composite signal comprising a chrominance signal and a motion representative signal;
• extracting said motion representative signal from said reproduced composite signal;
• providing an unfolded luminance signal by unfolding said attenuated high frequency components from said low frequency components in response to the motion representative signal;
• reproducing from said unfolded luminance signal, a full-bandwidth luminance signal exhibiting a second bandwidth wider than said limited bandwidth;
• and
• producing a composite video signal comprising said full bandwidth luminance signal and said chrominance signal.

A video signal recording and playback system for recording a full bandwidth video signal on a limited bandwidth medium and reproducing a previously recording video signal, comprising:

• an input terminal for receiving a composite video signal;
• encoding means, coupled to said input terminal, for producing a luminance signal having attenuated high frequencies folded into low frequencies and bandwidth limited to said limited bandwidth, and a combination signal including a chrominance component and a motion representative component;
• means for recording said luminance signal;
• means for recording said combination signal;
• luminance signal playback circuitry for reproducing a previously recorded limited bandwidth luminance signal, representing a full bandwidth luminance signal, having attenuated high frequency components folded into low frequency components;
• combination signal playback circuitry for reproducing a previously recorded combination signal including a previously recorded chrominance signal and a previously recorded motion representative signal;
• and
• decoder means, coupled to said luminance and combination signal playback circuitry, for extracting said previously recorded motion representative signal, unfolding said folded attenuated high frequency components in response to the motion representative signal and reproducing said previously recorded full bandwidth luminance signal, and producing a composite video signal comprising said full bandwidth luminance signal and said previously recorded chrominance signal.