Dynamic magnetic information storage or retrieval – Recording or reproducing plural information signals on the... – Head gap azimuth multiplex
Patent
1978-02-15
1979-12-25
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
Recording or reproducing plural information signals on the...
Head gap azimuth multiplex
360 33, G11B 502, H04N 578
Patent
active
041808339
ABSTRACT:
In an apparatus for reproducing video signals which are recorded as modulations of a carrier on a record medium, such as a magnetic tape, in successive, abutting parallel record tracks, with the signals being recorded in alternating tracks with different first and second azimuth angles, first and second magnetic heads are provided for sequentially scanning the tracks in which signals are recorded with the first and second azimuth angles, respectively, and the first and second magnetic heads having azimuth angles corresponding to the first and second azimuth angles of the respective tracks to be scanned thereby. Each of the magnetic heads is dimensioned and guided in the direction transverse to the direction along the respective track being scanned so as to overlap an adjacent track by a distance .DELTA.W=n.lambda./tan .theta.(n=1,2, . . .), in which .lambda. is the wavelength of the carrier as modulated by synchronizing signal portions of the video signals recorded in such adjacent track, and .theta. is the difference between the first and second azimuth angles of the heads. In this manner, cross-talk from the adjacent track is substantially attenuated.
REFERENCES:
patent: 3157738 (1964-11-01), Okamura
patent: 3911483 (1975-10-01), Kihara et al.
patent: 3925816 (1975-12-01), Kihara
patent: 3939485 (1976-02-01), Amari et al.
Hirai Jun
Nishikawa Masaru
Numakura Toshihiko
Canney Vincent P.
Eslinger Lewis H.
Sinderbrand Alvin
Sony Corporation
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