Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1984-09-12
1986-06-10
Stellar, George G.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 70, G11B 552, G11B 556
Patent
active
045946213
ABSTRACT:
In a rotary head type digital information signal recording and reproducing apparatus having plural rotary heads mounted on a rotary drum so as to be capable of recording and reproducing signals on parallel, oblique tracks on a magnetic tape, a tracking signal is recorded on at least one portion of each track which is not overlapped with a portion of each track where a digital information signal is recorded to avoid interference between the tracking signal and information signal. The tape travel speed and the rotary drum rotation speed are changed depending upon the transmission rate for a digital information signal to be recorded and reproduced to make the wavelength of a recorded signal frequency constant irrespective of the signal transmission rate. Tracking control is enhanced without increasing the error rate.
REFERENCES:
patent: 4348699 (1982-09-01), Tsuchiya et al.
patent: 4376268 (1983-03-01), Moriya et al.
patent: 4445146 (1984-04-01), Sakamoto et al.
patent: 4482928 (1984-11-01), Moriya et al.
patent: 4511933 (1985-04-01), Hofelt et al.
Arai Takao
Noguchi Takaharu
Yamazaki Shigeru
Hitachi , Ltd.
Stellar George G.
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