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Solid-state memory device with protection against power failure

  • US 20070006013A1
  • Filed: 07/26/2006
  • Published: 01/04/2007
  • Est. Priority Date: 12/22/2000
  • Status: Active Grant
First Claim
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1. A storage system comprising:

  • a controller that writes data to, and reads data from, a non-volatile storage medium;

    an auxiliary power source that receives a power signal from a host system, and generates a regulated power signal that is provided to the controller, wherein the auxiliary power source is capable of maintaining the regulated power signal to the controller when the power signal from the host system is interrupted, such that the auxiliary power source acts as a backup power supply when power from the host system is interrupted; and

    a voltage detection circuit that monitors the power signal from the host system and upon detecting a voltage drop in the power signal, blocking the host system from performing write operations to the storage system.

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