Video recorder using extended tape tracks to record compressed c

Details Video recorder using extended tape tracks to record compressed c Video recorder using extended tape tracks to record compressed c

1988-06-10

1989-03-07

Faber, Alan

Facsimile and static presentation processing

Facsimile

Recording apparatus

358343, 360 191, 360 22, 360 331, H04N 980

Patent

active

048111163

ABSTRACT:
In a video recorder having a drum with opposing dual record heads, successive fields of only the luminance signal (without the chrominance signal) are recorded by the heads during successive head rotations through 180.degree.. The tape is overwrapped around the drum by a certain angle (over 216.degree., for example) so that the chrominance signal of each preceeding field may be compressed and recorded during each head rotation through the overwrap angle (i.e., from 180.degree. to 216.degree. in the example). Because the luminance signal is not mixed with the chrominance for recording (as has been usual), the luminance bandwidth may be increased by about 1 megaHertz to occupy the frequency band otherwise occupied by the color-under chrominance signal in the prior art. This provides a significant improvement in overall video image resolution.

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patent: 4613912 (1986-09-01), Shibata et al.
patent: 4630132 (1986-12-01), Terada et al.

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