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Method for protecting data in media recording peripheral devices

  • US 5,568,608 A
  • Filed: 05/03/1995
  • Issued: 10/22/1996
  • Est. Priority Date: 12/14/1992
  • Status: Expired due to Term
First Claim
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1. A method for suspending the operation of a media recording peripheral device to minimize the loss of data stored in a data buffer of the peripheral device upon detection of an error condition at the peripheral device, comprising the steps of:

  • detecting at the peripheral device an error condition;

    terminating by the peripheral device execution of a present command within a command queue of the peripheral device;

    suspending execution by the peripheral device of commands within the command queue of the peripheral device to preserve data presently stored within the data buffer of the peripheral device;

    transmitting a notification from the peripheral device to a host computer of suspension of the execution of commands by the peripheral device within the command queue of the peripheral device;

    transmitting an abort command from the host computer to the peripheral device in response to said notification;

    in response to said abort command from said host computer, deleting all queued commands within the command queue; and

    actuating the execution by the peripheral device of commands in the command queue in response to commands received by the peripheral device from the host computer subsequent to deletion of all queued commands.

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