Method of recording and reproducing color video signals

Claim 1

A method of recording broad-band 3-color video signals on at least one recording medium, comprising the steps of: separating said broad-band 3-color video signals into narrow-band 3-color signals and a high-band monochrome signal having a frequency band higher than a frequency band of said narrow band signals; dividing said high-band monochrome signal into three band components; converting in frequency said three band components of said high-band monochrome signal; merging said three band components of said high-band monochrome signal having been converted in frequency into said narrow-band 3-color signals, while maintaining a frequency interlace relationship, thereby producing three composite color video signals; and recording said three composite color video signals in different regions of said at least one recording medium.

Claim 2

A method of recording broad-band 3-color video signals on at least one recording medium, comprising the steps of: separating said broad-band 3-color video signals into narrow-band 3-color signals and a high-band monochrome signal having a frequency band higher than a frequency band of said narrow band signals; dividing said high-band monochrome signal into three band components; converting in frequency said three band components of said high-band monochrome signal; merging said three band components of said high-band monochrome signal having been converted in frequency into said narrow-band 3-color signals, while maintaining a frequency interlace relationship, thereby producing three composite color video signals; and recording said three composite color video signals in different regions of said at least one recording medium.

Claim 4

A method of recording and reproducing broad-band 3-color video signals on at least one recording medium, comprising: separating said broad-band 3-color video signals into narrow-band 3-color signals and a high-band monochrome signal having a frequency band higher than a frequency band of said narrow band signals; dividing said high-band monochrome signal into three band components; converting in frequency said three band components of said high-band monochrome signal; merging said three band components of said high-band monochrome signal having been converted in frequency into said narrow-band 3-color signals, while maintaining a frequency interlace relationship, thereby producing three composite color video signals; recording said three composite color video signals in different recording regions of at least one recording medium; for reproduction, retrieving recording information from said three recording regions concurrently in synchronism with a predetermined reference signal separating said narrow-band 3-color signals from said retrieved composite color video signals; frequency-converting said three signals merged in said narrow-band 3-color signals while maintaining the frequency interlace relationship, and then summing said frequency-converted signals, thereby restoring said high-band frequency monochrome signal; and merging said high-band monochrome signals into each of said narrow-band 3-color signals so that said original broad-band 3-color signals are reproduced.

Claim 5

A method of recording and reproducing broad-band 3-color video signals on at least one recording medium, comprising: separating said broad-band 3-color video signals into narrow-band 3-color signals and a high-band monochrome signal having a frequency band higher than a frequency band of said narrow band signals; dividing said high-band monochrome signal into three band components; converting in frequency said three band components of said high-band monochrome signal; merging said three band components of said high-band monochrome signal having been converted in frequency into said narrow-band 3-color signals, while maintaining a frequency interlace relationship, thereby producing three composite color video signals; recording said three composite color video signals in different recording regions of at least one recording medium; for reproduction, retrieving recording information from said three recording regions concurrently in synchronism with a predetermined reference signal separating said narrow-band 3-color signals from said retrieved composite color video signals; frequency-converting said three signals merged in said narrow-band 3-color signals while maintaining the frequency interlace relationship, and then summing said frequency-converted signals, thereby restoring said high-band frequency monochrome signal; and merging said high-band monochrome signals into each of said narrow-band 3-color signals so that said original broad-band 3-color signals are reproduced.

Claim 6

A method of recording and reproducing broad-band 3-color video signals on recording media, comprising: separating said broad-band 3-color video signals which carry a plurality of pictures relating to each other into narrow-band 3-color signals and a high-band monochrome signal having a frequency band higher than a frequency band of said narrow band signals; dividing said high-band monochrome signal into three band components; converting in frequency said three band components of said high-band monochrome signal; merging said three band components of said high-band monochrome signal having been converted in frequency into said narrow-band 3-color signals, while maintaining a frequency interlace relationship, thereby producing three composite color video signals; recording portions of said composite color video signals corresponding to portions of said pictures on one main surface of each of first, second and third recording media; recording portions which follow said portions of composite color video signals on one main surface of a fourth main surface and another main surface of said first and second recording media; for reproduction, reading recorded information out of one main surface of said first, second and third recording media; reading recording information out of one main surface of said fourth recording medium and another main surface of said first and second recording medium and another main surface of said first and second recording media; and reproducing said broad-band 3-color signals from said three composite color video signals.

Claim 7

A method of recording and reproducing broad-band 3-color video signals on recording media, comprising: separating said broad-band 3-color video signals which carry a plurality of pictures relating to each other into narrow-band 3-color signals and a high-band monochrome signal having a frequency band higher than a frequency band of said narrow band signals; dividing said high-band monochrome signal into three band components; converting in frequency said three band components of said high-band monochrome signal; merging said three band components of said high-band monochrome signal having been converted in frequency into said narrow-band 3-color signals, while maintaining a frequency interlace relationship, thereby producing three composite color video signals; recording portions of said composite color video signals corresponding to portions of said pictures on one main surface of each of first, second and third recording media; recording portions which follow said portions of composite color video signals on one main surface of a fourth main surface and another main surface of said first and second recording media; for reproduction, reading recorded information out of one main surface of said first, second and third recording media; reading recording information out of one main surface of said fourth recording medium and another main surface of said first and second recording medium and another main surface of said first and second recording media; and reproducing said broad-band 3-color signals from said three composite color video signals.