| Patent Number |
Title Of Patent |
Date Issued |
| RE39831 |
Method and apparatus for providing positional information on a disk |
September 11, 2007 |
| The present invention is a method and apparatus for providing positional information of a disk. The disk has at least one side with a plurality of tracks, each having a first burst in a first servo field and a second burst in a second servo field. The first burst provides a first portion |
| 6429994 |
Method and apparatus for providing servo gain linearization for a magneto-resistive head |
August 6, 2002 |
| A method and apparatus for generating servo information used in positioning the read head of a hard disk drive. The apparatus comprises a disk having a plurality of tracks, at least one of which has a data field which includes a plurality of servo bits, each of said servo bits being radi |
| 6038097 |
Method and apparatus for providing positional information on a disk |
March 14, 2000 |
| The present invention is a method and apparatus for providing positional information of a disk. The disk has at least one side with a plurality of tracks, each having a first burst in a first servo field and a second burst in a second servo field. The first burst provides a first portion |
| 6008962 |
Method and apparatus for providing read and write skew offset information for a magneto-resistiv |
December 28, 1999 |
| The present invention is a method and apparatus for generating a skew or position offset signal for aligning the read element of an MR head with the centerline of written data, during a read operation. The disk has a plurality of tracks, one of which contains a calibration burst that all |
| 5986847 |
Method and apparatus for providing read and write skew offset information for a magneto-resistiv |
November 16, 1999 |
| The present invention is a method and apparatus for generating a skew or position offset signal for aligning the read element of an magneto-resistive (MR) head with the centerline of written data, during a read operation. The disk has a plurality of tracks each of which are divided i |
| 5926336 |
Method and apparatus for rewriting servo information on a disk in a hard disk assembly |
July 20, 1999 |
| The present invention is a method and apparatus for rewriting servo information on a disk of a hard disk drive. The new servo pattern is written on the tracks on the heads or sides of a disk pack using the stagger wedge scheme. When the read/write heads reach the first track beyond t |
| 5867343 |
Method and apparatus for storing position offset information on a hard drive assembly cylinder |
February 2, 1999 |
| A method and apparatus for storing position offset information not used for aligning the read element of an MR head with the centerline of written data, during a read operation. The skew or offset between the read and the write elements on a read head is first calibrated. The offset info |
| 5781361 |
Method and apparatus for generating servo information |
July 14, 1998 |
| A method and apparatus for generating servo information used in positioning the read head of a hard disk drive. The apparatus comprises a disk having a plurality of tracks, at least one of which has a servo field which includes four servo bits: an A bit, a B bit, a C bit and a D bit, whe |
