US 7,321,532 B2 | ||
Protection device and method of a read and write medium apparatus | ||
De-Sheng Chen, Taipei Xian (Taiwan) | ||
Assigned to Peng Chun Wu, Hsinchu (Taiwan) | ||
Filed on Nov. 15, 2004, as Appl. No. 10/986,887. | ||
Claims priority of application No. 2004 1 0741325 (CN), filed on Aug. 31, 2004. | ||
Prior Publication US 2006/0044977 A1, Mar. 02, 2006 | ||
Int. Cl. G11B 7/00 (2006.01) |
U.S. Cl. 369—53.18 [369/53.21] | 20 Claims |
1. A protection device of a read and write medium apparatus for ensuring the minimum damage to the apparatus when said apparatus
under an external force, comprising:
a central processing unit for recording and restoring the operation status of said apparatus;
a detective unit for detecting the external force and reckoning a value of the external force, wherein when the value is greater
than a critical point, said detective unit sends an attack signal and when the external force is removed said detective unit
sends a restoring signal;
a first arithmetic unit for informing said central processing unit of recording and restoring a operation status of said protection
device, said first arithmetic unit sending an interrupting signal when receiving the attack signal and sending a recovering
signal when receiving the restoring signal;
a read and write medium unit for storing, reading and writing data;
a switch unit for controlling a power source of said protection device,
said switch unit resetting a power of said read and write medium unit when receiving the recovering signal;
an electricity control unit for achieving the electricity saturation while said read and write medium unit is operating, discharging
electricity while said read and write medium unit cuts off the power; and
a second arithmetic unit for evaluating a condition of said electricity control unit, said second arithmetic unit sending
a saturation interrupting signal when receiving the interrupting signal during the electricity saturation condition; sending
a saturation restoring signal when receiving the recovery storing signal during the electricity saturation condition;
wherein said central processing unit recording the operation status and carrying out the power cut-off when receiving the
interrupting signal; compelling to the power cut-off of the switch unit when receiving the saturation interrupting signal,
and restoring to the prior operation condition of the device when receiving the saturation restoring signal.
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