Magnetic recording and/or reproducing apparatus with chrominance

Details Magnetic recording and/or reproducing apparatus with chrominance Magnetic recording and/or reproducing apparatus with chrominance

1977-07-11

1979-12-04

Konick, Bernard

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 4, 360 29, H04N 579

Patent

active

041774817

ABSTRACT:
In recording periodic information signals having first intervals and second intervals which are subdivisions of the first intervals, for example, the chrominance components of color video signals having field and line intervals, and which are recorded in respective areas or increments of successive parallel tracks on a record medium; interference due to crosstalk between signals recorded in next adjacent tracks is substantially reduced or eliminated by recording the information signals in such next adjacent tracks with first and second carriers, respectively, which have their phases changed in opposite directions by 2.pi./N and 2.pi./M, respectively, for successive second intervals, with each of N and M being a whole number greater than 2 which is negative to indicate a phase change or shift in the clockwise direction or positive to indicate a phase change in the counterclockwise direction, and with each of N and M being selected to satisfy the equation 1/N-1/M=1/2.

REFERENCES:
patent: 3968514 (1976-06-01), Narahara et al.
patent: 4007482 (1977-02-01), Amari
patent: 4007484 (1977-02-01), Amari
patent: 4010490 (1977-03-01), Ota

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