Recording/reproduction system with a fine picture quality for a helical scan-type video tape recorder

A recording system with a fine picture quality for a helical scan-type video tape recorder comprising:

• a video signal supply source for supplying a composite video signal;
• mode select means for selecting a first mode or a second mode, said first mode being provided for recording the video signal in a first recording format in which a luminance signal component and a color signal component of the video signal are recorded in different tracks, said second mode being provided for recording the video signal in a second recording format in which the frequency-modulated luminance signal and the low-frequency converted color sub-carrier signal are superposed and recorded into a single track;
• first signal processing means for separating, in said first mode, the luminance signal component from the supplied composite video signal, and producing the separated luminance signal component;
• second signal processing means for separating, in said first mode, the color signal component from the supplied composite video signal, and producing the separated color signal component;
• third signal processing means for separating, in said second mode, the color sub-carrier signal and the luminance signal component from the supplied composite video signal, for converting the separated color sub-carrier signal into low frequencies, for superposing the separated, low-frequency converted color sub-carrier signal on the frequency-modulated luminance signal, and for producing the superposed signal;
• a rotating member around which a video tape is wound;
• first and second heads of a first azimuth angle, which are disposed on said rotating member;
• third and fourth heads of a second azimuth angle different from said first azimuth angle, which are disposed on said rotating member;
• a fifth head disposed on said rotating member at the position rotated 180.degree. from said first head, and having the second azimuth angle different from that of said first head;
• and
• means for selectively supplying the signals supplied from said first to third signal processing means to said first to fifth heads according to said first and second modes, said selectively supplying means supplying, when said first mode is selected, the output signal of either said first or said second signal processing means to said first and second heads, while at the same time supplying to said third and fourth heads the output signal of either said first or said second signal processing means, which is different from that supplied to said first and second heads, and said selectively supplying means supplying, when said second mode is selected, the output signal from said third signal processing means to said first and fifth heads.

A reproduction system with a fine picture quality for a helical scan-type video tape recorder comprising:

• mode select means for selecting a first mode or a second mode, said first mode being provided for recording a video signal in a first recording format in which a luminance signal component and a color signal component of the video signal are recorded in different tracks, said second mode being provided for recording the video signal in a second recording format in which the frequency-modulated luminance signal and the low-frequency converted color sub-carrier signal are superposed and recorded into a single track;
• a rotating member around which a video tape is wound;
• first and second heads of a first azimuth angle and for reproducing either of said luminance signal component or said color signal component, said first and second heads being disposed on said rotating member;
• third and fourth heads of a second azimuth angle different from said first azimuth angle, and for reproducing either of said luminance signal component or said color signal component, which is different from that of said first and second heads, said third and fourth heads being disposed on said rotating member;
• a fifth head disposed on said rotating member at the position rotated 180.degree. from said first head, and having the second azimuth angle different from that of said first head, the signal as recorded in said second format being reproduced in cooperation with said fifth head and said first head;
• means for selectively outputting the signals supplied from said first to fifth heads according to said first and second modes, said selectively outputting means outputting, when said first mode is selected, the signals which are alternately output from said first and second heads as a first signal, while at the same time outputting the signals which are alternately output from said third and fourth heads as a second signal, and said selectively outputting means outputting, when said second mode is selected, the signals which are alternately output from said first and fifth heads as a third signal;
• first signal processing means which receives said first and second signals, superposes them, and outputs the superposed signal as a video signal;
• and
• second signal processing means which receives said third signal, separates a luminance signal and a low-frequency converted color sub-carrier signal from said third signal, frequency-converts the separated low-frequency converted color sub-carrier signal, superposes the frequency-converted color sub-carrier signal to the separated luminance signal, and outputs the superposed signal as a composite video signal.

A recording/reproduction head device with a fine picture quality for a helical scan-type video tape recorder of the type in which the luminance and the color signals are recorded into the different tracks by the heads having different azimuth angles, comprising:

• a rotating member around which a video tape is wound;
• first and second heads of a first azimuth angle, for recording on said video tape either the luminance or the color signal, and for reproducing the video tape thus recorded, said first and second heads being disposed on said rotating member;
• third and fourth heads of a second azimuth angle, for recording either the luminance or the color signal, which is different from that of said first and second heads, and for reproducing the video tape thus recorded, said third and fourth heads being disposed on said rotating member;
• a fifth head disposed on said rotating member at the position rotated 180.degree. from that of said first head, and having the second azimuth angle different from that of said first head, the frequency-modulated luminance signal and the low-frequency converted color sub-carrier signal being superposed and recorded in one track of the video tape by said first head oppositely disposed to said fifth head, and video tape thus recorded being reproduced in cooperation with said fifth head and said first head.