Apparatus and method employed in disk drive to enable single...

Details Apparatus and method employed in disk drive to enable single... Apparatus and method employed in disk drive to enable single...

2005-08-30

2005-08-30

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

C360S077080

Reexamination Certificate

active

06937410

ABSTRACT:
A first amplifier which amplifiers a faint read signal read by a head is connected to a second amplifier which further amplifiers the read signal amplified by the first amplifier, via a signal line. The signal line is used to transmit the read signal from the first amplifier to the second amplifier, and also to transmit a control signal from the second amplifier to the first amplifier. On the basis of, for example, a point in time at which a servo mark is detected from servo data, a control unit sets a period of time in which the transmission of the control signal from the second amplifier to the first amplifier is permitted, so that it does not overlap a period of time in which the servo data is read.

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Austrian Search and Examination Reports, dated May 14, 2004 for Patent Application No. 200205055-7.

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