| Patent Number |
Title Of Patent |
Date Issued |
| 7529060 |
Read and write head element arrangement |
May 5, 2009 |
| In one embodiment, an arrangement of elements on a head includes a first group of data element spanning a first distance on the head and a second group of data elements spanning a second spanning distance on the head greater than the first spanning distance. The second group of elements |
| 7289289 |
Recording servo stripes onto a servo track |
October 30, 2007 |
| To access data on a storage medium, at least three servo stripes simultaneously recorded in a servo track are read. The at least three servo stripes have different orientations on the servo track. An indication of a lateral position of a storage medium access head with respect to the |
| 7268970 |
Method and apparatus for storing data on magnetic tape |
September 11, 2007 |
| Electromagnetic tape head position is adjusted according to vibration indicative information received from vibration sensor secured to tape transport mechanism that supports the tape head. |
| 6992857 |
Weighting servo signals for head positioning |
January 31, 2006 |
| In one embodiment, a servo positioning method includes deriving a first servo signal S.sub.1 from a first servo band, deriving a second servo signal S.sub.2 from a second servo band, defining a head element reference between the servo bands, weighting each servo signal according to a |
| 6937425 |
Head-track alignment |
August 30, 2005 |
| A head-track alignment system and method. An embodiment of the system comprises: a head assembly capable of detecting arrival of servo frames in a first and second servo track of a tape; an alignment processor coupled to the head assembly generating a head-track alignment signal based on |
| 5982711 |
Device for reading data from or writing data to magnetic storage media and a method of positioni |
November 9, 1999 |
| A device for reading data from or writing data to magnetic storage media, the device comprising a head having a plurality of read/write elements for reading data from or writing data to magnetic storage media in respective tracks, and a plurality of servo elements for reading servo code |
| 4823212 |
Sampled servo code format and system for a disc drive |
April 18, 1989 |
| The system and method for normalizing the amplitude of servo code derived signals in a disc drive, includes an improved embedded servo code format of separate magnetic dibit fields, recorded in half track steps. One magnetic dibit field is an automatic gain control field in which the |
| 4786990 |
Servo gain compensation in a disc drive |
November 22, 1988 |
| Compensation for servo gain variations when connected to different magnetic heads in a disc memory drive is achieved by determining individual servo gain corrections for each magnetic head at several different selected tracks on the associated memory disc, storing the individual servo ga |
| 4775903 |
Sampled servo seek and track follow system for a magnetic disc drive |
October 4, 1988 |
| An improved method and apparatus for performing seek and track follow operations in a disc drive provides time varying acceleration profile and track position trajectory signals which have the same time duration and which are developed as a function of seek length. These signals are |
| 4688118 |
Servo gain compensation in a disc drive |
August 18, 1987 |
| Improvements are realized in magnetic disc drives in minimizing servo gain variations from one head to another and in differing track offset positions by providing servo code patterns and methods of fabricating such patterns in which magnetic heads of differing widths overlap the same |
