System for reading magnetic information provided with a thermal

Details System for reading magnetic information provided with a thermal System for reading magnetic information provided with a thermal

1997-04-07

1999-09-21

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

360 46, 360113, G11B 502

Patent

active

059561971

ABSTRACT:
The invention relates to a system for reading magnetic information, comprising at least one read head H0 provided with two magnetoresistive rods (MR10, MR20) whose electrical resistivities (RMR10, RMR20) vary in mutually opposite senses when they are subjected to a same variation in magnetic field. According to the invention, the reading system comprises a detection module DET which comprises two resistors R of substantially the same resistance value, an amplifier A having one input and one output, and a comparator Cp having two inputs and one output. Each resistor R has a terminal connected to the output terminal (M10, M20) of one of the magnetoresistive rods, while the other terminals of the resistors are interconnected so as to form a common junction point NC. The voltage of the common junction point NC is amplified and compared with a reference voltage Vref by the comparator Cp. The output of the comparator Cp signals an accidental contact between the read head and a foreign body or asperity which may be present on the surface on which the information is stored.

REFERENCES:
patent: 5216561 (1993-06-01), Jagielinski
patent: 5351003 (1994-09-01), Bauer et al.
patent: 5420736 (1995-05-01), Heim et al.
patent: 5715110 (1998-02-01), Nishiyama et al.
patent: 5751510 (1998-05-01), Smith et al.

Affiliated with

Also associated with

Rating

System for reading magnetic information provided with a thermal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for reading magnetic information provided with a thermal , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for reading magnetic information provided with a thermal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-86000