Patent ID: 6122235
Filing Date: 2000-09-19
Classification: G06F,G11B

Abstract:
A method for executing a read retry process to reread data out of a data recording medium when a read error occurs on reading said data out of said data recording medium in accordance with a read address, comprising the steps of:detecting whether or not a previous retry exists in concern to said read address;executing a read retry in accordance with a predetermined one of first through N-th retry parameters when said previous retry does not exist in concern to said read address, where N represents a positive integer which is greater than one, executing a read retry in accordance with a specific one of said first through said N-th retry parameters that is selected on the basis of a predetermined order when said previous retry exists in concern to said read address;producing the number of read retry successes in connection to each of said first through said N-th retry parameters; andinterchanging said predetermined order into a changed order which has said first through said N-th retry parameters arranged in order of the number of successes, said changed order being used as said predetermined order.