Disk storage systems

Details Disk storage systems Disk storage systems

2006-07-25

2006-07-25

Tzeng, Fred F. (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

C360S067000

Reexamination Certificate

active

07082004

ABSTRACT:
The present invention provides a disk storage system with a low error rate, which is suitable for reduction in size. The other end of the signal line, which is connected with a read head at one end, is connected with a head bias circuit to apply a sense current to the read head and a pair of first and second capacitance elements for allowing the read signal element formed by the read head to pass, a loop is provided for amplifying the read signal obtained through the first and second capacitance elements by supplying the read signal to an input terminal of a differential amplifying circuit and for converting the amplified signal into the current by transconductance and providing a positive feedback of the amplified signal to the input terminal of the differential amplifying circuit.

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Zheng, Zhiliang et al., “A 0.55nV/✓Hz Gigabit Fully-Differential CMOS Preamplifier for MR/GMR Read Application”, 2002 IEEE International Solid-State Circuits Conference, Session 3/Digital Processors and Circuits/3.7, 3 pages.
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