Defect detection design

Details Defect detection design Defect detection design

2007-10-16

2011-11-08

Huber, Paul (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

By medium defect indicative control signal

C369S053150

Reexamination Certificate

active

08054717

ABSTRACT:
A system and method are provided to detect defects in a data storage medium by sampling data read from the data storage medium. Time referenced samples of data read from the data storage medium are equalized to mediate the effects of channel noise and the equalized samples are decoded by a decoder, such as a Viterbi decoder. The decoded signal is then reconstructed through a reconstruction filter to approximate the equalized signal. The equalized data signal and the reconstructed data signal are then combined and compared in a bit-by-bit deconstruction scheme to determine, based on a variation between the signal elements, that a defect exists on the data storage medium. Additional action is then taken to mediate the effects of attempting to process corrupted data based on the defect by isolating the defective bit.

REFERENCES:
patent: 6307822 (2001-10-01), Shim et al.
patent: 2005/0078580 (2005-04-01), Kochale et al.
patent: 2005/0185540 (2005-08-01), Tsai et al.

Affiliated with

Also associated with

Rating

Defect detection design does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Defect detection design, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Defect detection design will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4254177