Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1977-02-18
1979-08-21
Griffin, Robert L.
Facsimile and static presentation processing
Static presentation processing
Attribute control
360 33, 360 30, H04N 576, G11B 504, H04L 700
Patent
active
041655184
ABSTRACT:
In apparatus for recording and/or reproducing video signals in successive parallel tracks on a record medium, and in which at least a portion of the video signals, for example, the luminance component of color video signals, is recorded as a frequency modulation on a carrier, the carrier of the frequency modulated portion of the video signals, as recorded in tracks that are next adjacent to each other, has different first and second carrier frequencies, respectively, which are in frequency interleaving relation to each other for minimizing cross-talk when reproducing the signals thus recorded. The shifting of the carrier frequency for the frequency modulated luminance component is conveniently achieved by selectively applying different first and second bias voltages to the luminance component as supplied to a frequency modulator, with the difference between such bias voltages being effective in the modulator to establish the desired difference between the carrier frequencies. On reproducing, the frequency modulated luminance component is demodulated, and changes in level of the demodulated luminance component corresponding to the different carrier frequencies with which the frequency modulated luminance component was recorded in next adjacent tracks, respectively, are eliminated, for example, by selectively applying suitably different bias voltages to the demodulated luminance component.
REFERENCES:
patent: 3918085 (1975-11-01), Numakura et al.
patent: 3925810 (1975-12-01), Ishigaki et al.
patent: 3925816 (1975-12-01), Kihara
patent: 3968514 (1976-07-01), Narahara et al.
patent: 4007482 (1977-02-01), Amari
patent: 4007484 (1977-02-01), Amari
patent: 4010490 (1977-03-01), Ota
patent: 4012771 (1977-03-01), Ishigaki et al.
Eslinger Lewis H.
Griffin Robert L.
Psitos Aristotelis M.
Sinderbrand Alvin
Sony Corporation
LandOfFree
Video signal recording and/or reproducing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Video signal recording and/or reproducing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video signal recording and/or reproducing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1325474