Back to results
US 2007/0165319 A1Published application
Address mark detection with error threshold that varies with timing jitter
AssigneeMaxtor Corporation
InventorMatthew Fisher
Life of this patent
Estimating the term…
Abstract
An apparatus includes an address mark detector having an address mark output. The address mark output is indicated as erroneous if errors in a detected address mark exceed an error threshold function. The error function has a variation as a function of a difference between a detected address mark time and a reference address mark time.
Claims20
An apparatus, comprising:
- an address mark detector having an address mark output, the address mark output being indicated as erroneous when errors in a detected address mark exceed an error threshold function, the error threshold function having a variation as a function of a difference between a detected address mark time and a reference address mark time.
A method, comprising:
- detecting a number of bit errors and a time position of a detected address mark;
- calculating an error threshold function as a function of a difference between the time position of the address mark and a reference address mark time;
- and
- providing an address mark output that is indicated as erroneous if the number of bit errors exceed the error threshold function.
1 more element
An apparatus, comprising:
- a first circuit storing a set of multiple error thresholds;
- and
- a second circuit that selects one of the thresholds that matches a detected address mark timing, the match controlling indicating of an address mark output as erroneous.
Dependencies are inferred from the claim text.