1
John Christopher Morris, Brian Robert Pollock, Timothy Francis Ellis: Compensation for repeatable run-out error. Seagate Technology, Westman Champlin & Kelly PA, May 30, 2000: US06069764 (31 worldwide citation)

A method and apparatus for compensating for repeatable run-out errors in a disc drive is disclosed. The compensation is created by determining transfer function values for a servo loop in the drive as well as a sequence of repeatable run-out values for a portion of a disc. The repeatable run-out val ...


2
Reed David Hanson, Brian Robert Pollock: Utilizing a combination of physical tracks and virtual tracks to store data on a data storage medium. Seagate Technology, Westman Champlin & Kelly, February 12, 2008: US07330322 (9 worldwide citation)

A data storage system and a method for storing data in a data storage system are provided. The data storage system includes a data storage medium that has at least one physical track that stores at least a portion of manufacturing process data, and virtual tracks that store user data.


3
John Christopher Morris, Brian Robert Pollock, Timothy Francis Ellis: Compensation for repeatable run-out error. Seagate Technology, Theodore M Magee, Westman Champlin & Kelly P A, June 15, 2004: US06751045 (3 worldwide citation)

A method and apparatus for compensating for repeatable run-out errors in a disc drive is disclosed. The compensation is created by determining transfer function values for a servo loop in the drive as well as a sequence of repeatable run-out values for a portion of a disc. The repeatable run-out val ...


4
Kent Jon Forbord, Brian Robert Pollock, Joshua Ward Christensen: Higher inter-disc separations to improve disc drive actuator servo performance. Jonathan E Olson, Seagate Technology, January 9, 2003: US20030007284-A1

To alleviate excessive non-repeatable runout (NRRO) on heads between discs, an original multi-disc design is adapted by (a) reducing the number of discs in the stack and (b) configuring the disc drive of the adapted design with a larger nominal inter-disc separation than that of the original design. ...


5
Reed David Hanson, Brian Robert Pollock: Utilizing a combination of physical tracks and virtual tracks to store data on a data storage medium. Seagate Technology, David K Lucente, Seagate Technology, August 3, 2006: US20060171050-A1

A data storage system and a method for storing data in a data storage system are provided. The data storage system includes a data storage medium that has at least one physical track that stores at least a portion of manufacturing process data, and virtual tracks that store user data.


6
Kent Jon Forbord, Brian Robert Pollock, Joshua Ward Christensen: Higher inter-disc separations to improve disc drive actuator servo performance. Seagate Technology, Derek J Berger, November 18, 2003: US06650501

To alleviate excessive non-repeatable runout (NRRO) on heads between discs, an original multi-disc design is adapted by (a) reducing the number of discs in the stack and (b) configuring the disc drive of the adapted design with a larger nominal inter-disc separation than that of the original design. ...