Disc drive apparatus
First Claim
Patent Images
1. A disc drive apparatus adapted to write and/or read information onto and/or from an information recording disc, with the information recording disc being rotated by a rotary drive motor and a head drive being controlled to position a head in a radial direction of the information recording disc under supply of a predetermined rated power source voltage, said disc drive apparatus comprising:
- a forcible restoration device for controlling the head drive to execute a forcible restoration action that forcibly moves the head to a retract position when the power source voltage drops below a predetermined threshold value;
a detection and count device for detecting execution of the forcible restoration action, counting the number of times the forcible restoration action is executed, and updating a count value every time execution of the forcible restoration action is detected; and
a notification device for providing a notification of the updated count value.
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Accused Products
Abstract
A disc drive arrangement adapted to move a head to a retract position upon shutting down of a power source voltage, wherein the number of retraction actions of the head is counted and notified. With this notification, a user can assume performance deterioration of the disc drive arrangement.
17 Citations
26 Claims
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1. A disc drive apparatus adapted to write and/or read information onto and/or from an information recording disc, with the information recording disc being rotated by a rotary drive motor and a head drive being controlled to position a head in a radial direction of the information recording disc under supply of a predetermined rated power source voltage, said disc drive apparatus comprising:
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a forcible restoration device for controlling the head drive to execute a forcible restoration action that forcibly moves the head to a retract position when the power source voltage drops below a predetermined threshold value;
a detection and count device for detecting execution of the forcible restoration action, counting the number of times the forcible restoration action is executed, and updating a count value every time execution of the forcible restoration action is detected; and
a notification device for providing a notification of the updated count value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A disc drive apparatus for writing and/or reading information onto and/or from an information disc, said disc drive apparatus comprising:
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a rotary drive motor for rotating the information disc;
a head for writing and/or reading the information onto and/or from the disc;
a head drive for positioning the head in a radial direction of the disc;
a voltage input for providing a voltage to said rotary drive motor, said head, and said head drive;
a forcible restoration device for forcibly moving said head to a periphery of the disc when the voltage from said voltage source is below a predetermined level; and
a counter for counting the number of times said forcible restoration device has forcibly moved said head to the periphery of the disc. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A disc drive apparatus adapted to write and/or read information onto and/or from an information recording disc, with the information recording disc being rotated by a rotary drive motor and a head drive being controlled to position a head in a radial direction of the information recording disc under supply of a predetermined rated power source voltage, said disc drive apparatus comprising:
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first means for controlling the head drive to execute a forcible restoration action that forcibly moves the head to a retract position when the power source voltage drops below a predetermined threshold value;
second means for detecting execution of the forcible restoration action, counting the number of times the forcible restoration action is executed, and updating a count value every time execution of the forcible restoration action is detected; and
a notification device for providing a notification of the updated count value.
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23. A method of controlling a disc drive apparatus that includes a head and that is powered by a rotary drive motor which receives voltage from a power source, comprising:
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monitoring the power source voltage;
in response to detecting of a drop in the power source voltage below a predetermined threshold value, forcibly moving the head to a retract position;
counting the number of times the forcible moving action is executed;
providing a notification of the number of times the forcible moving action is executed. - View Dependent Claims (24, 25, 26)
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Specification