Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data verification
Patent
1995-02-08
1997-03-11
Kim, W. C.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data verification
360 46, 360 65, G11B 509
Patent
active
056107765
ABSTRACT:
The present invention relates to a disk drive recording apparatus and more particularly to a method for optimizing performance of a read channel in a disk drive recording apparatus by using an error rate. The method for optimizing performance of a read channel in a disk driving recording apparatus having a programmable low-pass filter and a control device for controlling apparatus operation includes the steps of initially assigning a filtering characteristic to the programmable low-pass filter as a predetermined initial bandwidth value via the control device; detecting and evaluating data written on a predetermined track of a disk to calculate a first data detection error rate by the control device; comparing a reference error rate with the first data detection error rate; setting the filtering characteristic of the low-pass filter to a bandwidth indicating a lowest error rate by varying the bandwidth of the programmable low-pass filter when the first data detection error rate is greater than a reference error rate; thereafter, detecting data written on the predetermined track of the disk to calculate a second data detection error rate by the control device; comparing the reference error rate with the second data detection error rate; outputting an error state signal indicating that the disk drive recording apparatus is in an error state when the second data detection error rate is greater than the reference error rate; and setting a currently set bandwidth as a final set value and completing an optimization process when any one of the first and second data detection error rates is below the reference error rate.
REFERENCES:
patent: 5270875 (1993-12-01), Shah et al.
patent: 5276517 (1994-01-01), Matsuzawa et al.
patent: 5299070 (1994-03-01), Takahashi et al.
patent: 5327302 (1994-07-01), Khoury et al.
patent: 5341249 (1994-08-01), Abbott et al.
patent: 5408367 (1995-04-01), Emo
patent: 5416646 (1995-05-01), Shirai
patent: 5438462 (1995-08-01), Cupolillo
Bushnell Esq. Robert E.
Kim W. C.
Samsung Electronics Co,. Ltd.
LandOfFree
Method of optimizing read channel of disk drive recording appara does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of optimizing read channel of disk drive recording appara, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of optimizing read channel of disk drive recording appara will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-448046