Dynamic magnetic information storage or retrieval – General recording or reproducing – Signal switching
Patent
1990-05-18
1994-01-04
Psitos, Aristotelis
Dynamic magnetic information storage or retrieval
General recording or reproducing
Signal switching
360108, G11B 1514, G11B 552
Patent
active
052765652
ABSTRACT:
A magnetic recording and reproduction apparatus includes a rotary drum to be driven to rotate, a first head provided on the rotary drum, a second head provided on the rotary drum so as to be set in an enable state when the first head is in a disable state, first and second amplifying circuits connected to the first and second heads, respectively, and capable of being set in an enable or disable state by a selection signal, a rotary transformer commonly coupled to the first and second amplifying circuits, and a selection signal generating portion for supplying a selection signal to the first and second amplifying circuits in synchronism with rotation of the rotary drum.
REFERENCES:
patent: 3911486 (1975-10-01), Hibbard
patent: 4213084 (1980-07-01), Hiromitsu
patent: 4614985 (1986-09-01), Tsuruta
patent: 4851935 (1989-07-01), Ohyama et al.
patent: 4926273 (1990-05-01), Tabuchi et al.
Patent Abstracts of Japan, vol. 10, No. 111, (P-451) (2168), Apr. 25, 1986, & JP-A-60-242501, M. Hayashi, et al., "Rotary Head Cylinder", Dec. 2, 1985.
Patent Abstracts of Japan, vol. 13, No. 59, (P-826) (3407), Feb. 10, 1989, & JP-A-63-249902, H. Sekiguchi, et al., "Rotary Head Device", Oct. 17, 1988.
Patent Abstracts of Japan, vol. 7, No. 282, (P-243) (1427), Dec. 16, 1983, & JP-A-58-159203, A. Yoshioka, et al., "Magnetic Video Recording and Reproduction Device", Sep. 21, 1983.
Patent Abstracts of Japan, vol. 8, No. 194, (E-264) (1631), Sep. 6, 1984, & JP-A-59-084410, T. Inchi, et al., "Rotary Transformer", May 16, 1984.
Furusawa Takanori
Higashiyama Yasushi
Kabushiki Kaisha Toshiba
Psitos Aristotelis
Sheladia Varsha V.
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