METHOD AND APPARATUS FOR HARD DISK POWER FAILURE PROTECTION
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United States of America Patent
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Issued Date -
Dec 10, 2009
app pub date -
Mar 30, 2009
filing date -
Jun 10, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to a method and an apparatus for hard disk power failure protection. The method includes receiving power from a battery through a battery power input wire when the hard disk drive is out of power, supplying battery power to the cache of the hard disk drive, and performing data protection for the cache. A wire of the hard disk interface (HDI) may be set as the battery power input wire, and the battery power voltage is less than or equal to the standard voltage of the wire used as the battery power input wire. The method can ensure cache data security and integrity with low cost and maintain compatibility with existing interface configurations.
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