Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Synchronizing moving-head moving-record recorders
Patent
1987-07-21
1990-09-11
Faber, Alan
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Synchronizing moving-head moving-record recorders
360 722, 360 7306, 360 7308, G11B 553, G11B 15467
Patent
active
049567306
ABSTRACT:
An apparatus for reproducing signals recorded in slanting tracks on a recording tape including tape position information recorded at a specified area on each track apparatus has a tape speed setting circuit for setting a plurality of tape speeds, and a cylinder speed setting circuit for setting a rotational speed of a rotary cylinder such that the track direction speed component of a reproducing head mounted on the rotary cylinder is kept constant. A tape running control circuit controls a reel drive circuit so that the tape runs at a speed set by the tape speed setting circuit. A cylinder control circuit controls the rotary cylinder so that the rotary cylinder rotates at a speed set by the cylinder speed setting circuit. In a transition state from a normal reproduction mode to a high speed search mode, the tape speed setting circuit changes the tape speed in a step-wise fashion so that the deviation of the track direction speed component of the head in each step of tape speed change is within a range in which the tape position information is correctly read.
REFERENCES:
patent: 4254367 (1981-03-01), Sakamoto
patent: 4267564 (1981-05-01), Flores
patent: 4407463 (1983-10-01), Ashida
patent: 4448368 (1984-05-01), Skalko
patent: 4584618 (1986-04-01), Tasery
patent: 4636874 (1987-01-01), Hoogendoorn et al.
patent: 4688115 (1987-08-01), Takahashi et al.
patent: 4764824 (1988-08-01), Tani et al.
"Servo Technology of R-DAT" by Akihiko Hitomi, et al. (IEEE Transactions on Consumer Electronics, vol. CE-32, No. 3, Aug. 1986, pp. 425-431).
Patent Abstracts of Japan, vol. 8, No. 82 (P-268)[1519], Apr. 14, 1984; JP-A-58-224458, Dec. 26, 1983, J. Ono.
"High Speed Tracking Control for Reel-to-Reel Tape Transport", Nagayama et al.; Review of Electrical Communication Laboratories, vol. 28, No. 5-6, May/Jun. 1980, Tokyo, Japan, pp. 440-448.
Patent Abstracts of Japan, vol. 6, No. 160 (E-126) [1038], Aug. 21, 1982: JP-A-57-80881, May 20, 1982, T. Kawabe.
Patent Abstracts of Japan, vol. 10, No. 101 (P-447)[2158], Apr. 17, 1986; JP-A-60-231952, Nov. 18, 1985, K. Yoshino.
Arai Kazuo
Ota Kiyoshi
Faber Alan
Garland Steven R.
Matsushita Electric - Industrial Co., Ltd.
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