Additional memories storing substantial information

Address mark detection circuit

Address mark detection system for a magnetic disk drive

Address mark encoding for a record storage medium

Apparatus and methods for low overhead highly reliable...

Apparatus and methods for low overhead, highly reliable...

Apparatus for detecting addresses recorded on each sector of a d

Apparatus for detecting faulty sectors and for allocating replac

Automated multi-track transfers

Code generating apparatus

Data recording method for recording absolute address data on a t

Data recording system having longitudinal tracks with recordable

Data recording with high speed search capability

Data recording/reproducing apparatus

Data sector pulse generating method

Defect skipping mechanism for disk drives

Digital address information recording method for recording absol

Disc memory servo indexing system

Disc storage addressing circuit

Disk control method of format write operation using data distanc