H - Electricity – 04 – N
Patent
H - Electricity
04
N
352/21.1
H04N 5/782 (2006.01) G11B 5/008 (2006.01) G11B 5/52 (2006.01) G11B 5/53 (2006.01) G11B 20/00 (2006.01) G11B 20/24 (2006.01) G11B 21/00 (2006.01) H04N 5/926 (2006.01)
Patent
CA 1210858
ABSTRACT OF THE DISCLOSURE Apparatus for recording and reproducing digital color video signals from successive, parallel tracks on a magnetic tape includes a rotary guide drum about which the magnetic tape is wrapped for an angle greater than a nominal angle of 180° for real time recording and reproduction; a recording section including time base expander circuits for expanding the time base of the digital color video signals, and two diametrically opposite pairs of recording rotary magnetic heads, with the recording rotary magnetic heads of each pair having magnetic gaps with different azimuth angles for recording the time base expanded video signals in the parallel tracks; and a reproducing section including two diametrically opposite pairs of reproducing rotary magnetic heads, with the reproducing rotary magnetic heads of each pair having magnetic gaps with different azimuth angles, for reproducing the time base expanded video signals from the parallel tracks, and time base compression circuits for compressing the time base of the time base expanded video signals to return the same to its original time base, thereby providing a : lower Nyquist frequency, while also providing a high signal-to-noise ratio with a sufficiently wide frequency range, and without increasing the diameter of the guide drum.
426098
Gowling Lafleur Henderson Llp
Sony Corporation
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