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Back up power embodied non-volatile memory device

  • US 6,707,748 B2
  • Filed: 12/31/2002
  • Issued: 03/16/2004
  • Est. Priority Date: 05/07/2002
  • Status: Expired due to Fees
First Claim
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1. A back up power embodied non-volatile memory device, comprising:

  • a connection port connected electrically to a host machine, wherein the host machine provides host data and power to the connection port through an external bus;

    a battery for providing back up power;

    a buffer unit for holding data from the connection port temporarily;

    a non-volatile memory unit; and

    a memory controller for scheduling the writing of data from the buffer unit to the non-volatile memory unit, monitoring the presence or absence of host power and supplying back up power to write the remaining data into the non-volatile memory unit if the host power disappears before data is completely written.

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