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Disk drive device, and method of unloading a head when the electronic device falls

A technology of electronic devices and disk drives, which is applied in the field of disk drives and can solve problems such as difficult unloading

Inactive Publication Date: 2009-03-11
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, it is difficult to consistently and reliably unload the head onto the slope

Method used

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  • Disk drive device, and method of unloading a head when the electronic device falls
  • Disk drive device, and method of unloading a head when the electronic device falls
  • Disk drive device, and method of unloading a head when the electronic device falls

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Embodiment Construction

[0019] Various inventions according to the present invention will be described below with reference to the accompanying drawings.

[0020] FIG. 1 is a block diagram showing an example configuration of an electronic device 1 according to an embodiment of the present invention. The electronic device 1 is a portable electronic device such as a portable personal computer, a video camera, a music player, a mobile terminal, and a cellular phone.

[0021] The electronic device 1 is loaded with a hard disk drive (HDD) 10 . The electronic device 1 includes a host 100 using the HDD 10 as a storage unit. The HDD 10 and the host 100 are contained in the housing of the electronic device 1 . Generally, the housing of the electronic device is also used as the housing of the host. The HDD 10 is connected to the host 100 through a host interface 110 .

[0022] The host 100 includes a free fall (FF) detector 101 . The FF detector 101 detects a drop (eg, free fall) of the electronic device ...

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PUM

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Abstract

The present invention provides a disk drive installed in a portable electronic device, and a method for unloading the head when the electronic device falls. According to one embodiment, a disk drive (HDD) (10) is installed in a portable electronic device (1). The HDD (10) includes an actuator (14) which supports a head such that the head is radially movable over a disk (11). A constant speed controller (202) incorporated in the HDD (10) executes constant speed control for unloading the head (12) onto a ramp (17) at a constant speed in accordance with a fall detection signal (102) output from a fall detector (101) and indicating that fall of the device (1) has been detected. In the constant speed control, the controller (202) drives a voice coil motor (15) as a drive source for the actuator to make the movement speed of the head (12) identical to a first target speed. The first target speed is set higher than a second target speed set when the head (12) is unloaded onto the ramp (17) in a normal state.

Description

technical field [0001] An embodiment of the present invention relates to a disk drive for reading / writing information using a head, and more particularly, a disk drive mounted in a portable electronic device and adapted to unload the head when the electronic device is dropped. Background technique [0002] In recent years, in accordance with miniaturization of disk drives, various portable electronic devices provided with such small disk drives have appeared. Portable personal computers, video cameras, music players, portable terminals, mobile phones are existing such portable electronic devices. [0003] However, when portable electronic devices are transported and used by users, they may also be accidentally dropped. [0004] Considering this point, Japanese Patent Application KOKAI Publication No. 2007-115309 discloses a technique of quickly unloading the head to a slope (head retracting area) when an electronic device on which a disk drive is mounted is dropped (convent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/54G11B5/55
CPCG11B19/042G11B21/12G11B5/54
Inventor 楠本辰春
Owner KK TOSHIBA
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