Dynamic magnetic information storage or retrieval – Head – Core
Patent
1995-05-23
1996-12-17
Lim, Krisna
Dynamic magnetic information storage or retrieval
Head
Core
395439, 360 7812, 360 7804, 364DIG1, 364DIG2, G06F 300
Patent
active
055863060
ABSTRACT:
An integrated circuit controls the low level, electromechanical functionality of a computer mass storage device, such as a magnetic disk drive incorporating a spindle motor for rotatably controlling a disk and an actuator for positioning at least one read/write head with respect to the disk, to read or write encoded data configured in information data sectors and to sense encoded data of servo data sectors. A servo subsystem is coupled to an output of the read/write head for detecting the servo data sectors and providing a control signal in response thereto. An analog-to-digital subsystem is also coupled to an output of the read/write head and is operative in response to the servo subsystem control signal for converting the encoded data of the servo data sectors to digital transducer position information representative of a position of the read/write head with respect to the data tracks. A data processing subsystem is coupled to the analog-to-digital subsystem for processing the digital transducer position information and providing digital motion control signals in response thereto. A digital-to-analog subsystem is coupled to the data processing subsystem for providing analog control signals to the spindle motor and the actuator in response to the digital motion control signals.
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Ahuja Bhupendra K.
Estakhri Petro
Geldman John S.
Ho Son
Imam Maryam
Cirrus Logic Inc.
Lim Krisna
Maung Zarni
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