Dynamic magnetic information storage or retrieval – General recording or reproducing – Signal switching
Patent
1986-05-07
1987-08-04
Stellar, George G.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Signal switching
G11B 1514
Patent
active
046850066
ABSTRACT:
A magnetic recording-reproducing device for recording a signal on a magnetic tape and/or reading out a signal from the magnetic tape to reproduce the same while running the magnetic tape in contact with a rotary drum having at least two heads, which is characterized in that it comprises a frequency generator for generating a pulse train having a frequency proportional to the rotating speed of the rotary drum, a pulse generating unit for generating a pulse indicating the direction/position of rotation of each head each time the rotary drum rotates a certain angle of rotation, a delay circuit for delaying the phase of the pulse supplied from the pulse generating unit, and a gate circuit for computing the logical product of the pulse supplied from the delay circuit and the pulse supplied from the frequency generator, wherein the pulse supplied from the gate circuit is treated as a pulse indicating a true head position, whereby the true head position pulse can be generated electrically, easily and accurately when the head has come to a definite position.
REFERENCES:
patent: 2979562 (1961-04-01), Leyton
patent: 3862355 (1975-01-01), Guisinger
patent: 4011587 (1977-03-01), Arter et al.
patent: 4021857 (1977-05-01), Tanimura
patent: 4071856 (1978-01-01), Kihara et al.
patent: 4120007 (1978-10-01), Sato
patent: 4139871 (1979-02-01), Yoshida et al.
patent: 4361856 (1982-11-01), Okamoto
patent: 4412259 (1983-10-01), Hiraguri
patent: 4600953 (1986-07-01), Furuhata et al.
Alps Electric Co. ,Ltd.
Shoup Guy W.
Stellar George G.
LandOfFree
Magnetic recording-reproducing device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic recording-reproducing device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording-reproducing device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-886927