Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1980-11-28
1984-02-21
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
335229, G11B 543, H01F 700
Patent
active
044333510
ABSTRACT:
An assembly for use in an analog audio record/playback or playback system to achieve and maintain the same phase relationship between the recorded signals upon playback, as was present when the signals were originally recorded comprising generally, playback transducer means including a playback head, phase comparison to determine the phase relationship of the signal played back by the playback transducer means and to output a signal which is proportional to the magnitude and direction of any phase difference present, and electrically responsive driver means to adjust the playback transducer means to dynamically compensate for the phase error by rotating the playback head.
REFERENCES:
patent: 2751439 (0000-01-01), Burton
patent: 2937239 (1960-05-01), Garber et al.
patent: 2938962 (0000-01-01), Konins et al.
patent: 3204228 (0000-01-01), Eckert, Jr.
patent: 3387295 (0000-01-01), DeMoss
patent: 3526726 (1970-09-01), Corbett et al.
patent: 4101937 (1978-07-01), Jenkins
patent: 4258398 (1981-03-01), Bixby et al.
Patent Abstracts of Japan, vol. 2, No. 124, Oct. 18, 1978, p. 7291E78.
Bauer William D.
Minnesota Mining and Manufacturing Company
Sell Donald M.
Tupper Robert S.
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