Method and apparatus for thermal asperity recovery for word sync detection in data channels

Apparatus for thermal asperity recovery for word sync detection in data channels comprising:

• a word sync field containing a plurality of word sync patterns;
• a word sync detector receiving a read signal of said word sync field;
• said word sync detector for identifying a first subset of said plurality of word sync patterns and for starting a customer data read;
• said word sync detector for failing to identify said subset of said plurality of word sync patterns and for receiving again said read signal of said word sync field;
• said word sync detector for identifying a second predefined subset of said plurality of word sync patterns and for starting a customer data read;
• and
• said first subset of said plurality of word sync patterns includes 4 of 8 word sync patterns;
• said second predefined subset of said plurality of word sync patterns includes 2 of 8 word sync patterns.

A method for thermal asperity recovery for word sync detection in data channels comprising the steps of:

• reading a single word sync field containing a plurality of word sync patterns;
• said word sync patterns including repeated unique patterns;
• providing a word sync detector to perform the steps of;
• receiving a read signal of said single word sync field;
• identifying a first subset of said plurality of word sync patterns and starting a customer data read;
• responsive to failing to identify said subset of said plurality of word sync patterns, receiving again said read signal of said single word sync field;
• and
• identifying a second predefined subset of said plurality of word sync patterns and starting a customer data read.

A method for thermal asperity recovery for word sync detection in data channels comprising the steps of:

• reading a word sync field containing a plurality of word sync patterns;
• providing a word sync detector to perform the steps of;
• receiving a read signal of said word sync field;
• identifying a first subset of said plurality of word sync patterns and starting a customer data read;
• responsive to failing to identify said subset of said plurality of word sync patterns, receiving again said read signal of said word sync field;
• identifying a second predefined subset of said plurality of word sync patterns and starting a customer data read;
• and
• said second predefined subset of said plurality of word sync patterns is 2 of 8 and said first subset of said plurality of word sync patterns is 4 of 8.