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Method of controlling clean-up of a solid state memory disk storing floating sector data

  • US 5,479,633 A
  • Filed: 10/30/1992
  • Issued: 12/26/1995
  • Est. Priority Date: 10/30/1992
  • Status: Expired due to Term
First Claim
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1. A method of initiating and controlling background clean-up of a solid state memory disk, the solid state memory disk including a processing unit, the processing unit allocating execution time for clean-up, the method comprising the steps of:

  • a) enabling a clean-up state machine after completion of a write command, the clean-up state machine having a multiplicity of states, each state controlling the execution of a portion of clean-up, each state resetting a next state pointer to point to a next state;

    b) setting the next state pointer to an evaluation state for evaluating whether clean-up is necessary;

    c) executing a state pointed to by the next state pointer when the processing unit allocates execution time for clean-up, execution of each state taking no more than a selected maximum amount of execution time; and

    d) repeating step c) until a block of the solid state memory disk is cleaned-up.

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