Method of and apparatus for recording and/or reproducing a curre

Details Method of and apparatus for recording and/or reproducing a curre Method of and apparatus for recording and/or reproducing a curre

1993-06-23

1995-11-07

Young, W. R.

Dynamic magnetic information storage or retrieval

Record editing

358343, H04N 5782

Patent

active

054651808

ABSTRACT:
A digital magnetic recording method, recording apparatus, reproducing apparatus, and recording/reproducing apparatus for recording and/or reproducing a current digital video signal and a high-definition (HD) digital video signal in a common track format on a recording tape using rotary heads. In recording, the current digital video signal is compressed to a specified amount of data, the HD digital video signal is compressed to n (n is an integer of 2 or larger) times the amount of data of the compressed current digital video signal, and when recording the current digital video signal, digital audio signals of m (m is an integer of 2 or larger) channels are multiplexed with the current digital video signal in time division, and the multiplexed signal is azimuth-recorded with k (k is an integer of 2 or larger) magnetic heads on k tracks in every one revolution of the rotary drum, and when recording digital audio signals of n.times.m channels are multiplexed with the HD digital video signal in time division, the transportation speed of the magnetic tape is made n times the tape transportation speed in recording the current digital video signal, and the multiplexed signal is recorded by azimuth recording with n.times.k magnetic heads on n.times.k tracks in every one revolution of said rotary drum.

REFERENCES:
patent: 4947271 (1990-08-01), Nakayama et al.
patent: 5063453 (1991-11-01), Yoshimura et al.
patent: 5065259 (1991-11-01), Kubota et al.
Patent Abstracts of Japan, vol. 14, No. 104, (P1013), Feb. 26, 1990, & JP1-307977.
Patent Abstracts of Japan, vol. 14, No. 116, (P1016), Mar. 5, 1990, & JP1-312781.
Patent Abstracts of Japan, vol. 14, No. 175, (E0914), Apr. 6, 1990, & JP2-29174.

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