Dynamic magnetic information storage or retrieval – Recording combined with metering or sensing
Patent
1993-10-05
1995-10-03
Young, W. R.
Dynamic magnetic information storage or retrieval
Recording combined with metering or sensing
360 66, 360 25, G11B 509
Patent
active
054557178
ABSTRACT:
A device for recording an information signal on a magnetic record carrier (2) includes a write amplifier (3), a magnetic head (4) of the magnetoresistive type, and a compensation circuit for controlling the amplitude of the write current in dependence upon temperature variations which occur during recording. The compensation circuit includes an actuator for bringing the record carrier into contact with the magnetic head (4) before a recording is started. In addition, detector means (17, 18) is provided to detect an output signal of the magnetic head produced as a result of the magnetic head being brought into contact with the record carrier. A control signal generator (17) generates a control signal whose magnitude is a measure of the magnitude of the output signal. The compensation circuit (3, 5, 8, 11, 17) is adapted to control the amplitude of the write current in dependence upon the control signal.
REFERENCES:
patent: 4772964 (1988-09-01), Kaida
patent: 5148329 (1992-09-01), Yamauchi et al.
patent: 5168395 (1992-12-01), Klaassen et al.
patent: 5182742 (1993-01-01), Ohmori et al.
patent: 5233596 (1993-08-01), Tani
patent: 5270882 (1993-12-01), Jove et al.
Akkermans Gerardus W. A.
Hoogendoorn Abraham
Van Beckhoven Stephanus J. M.
Van Doorn Rudolf A.
Verhallen Franciscus J. R.
Goodman Edward W.
Kapadia Varsha A.
U.S. Philips Corporation
Young W. R.
LandOfFree
Recording device with temperature-dependent write-current contro does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recording device with temperature-dependent write-current contro, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recording device with temperature-dependent write-current contro will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1081278