197889 ⎘
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor; Disposition or mounting of heads relative to record carriers with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks with optical servo tracking
Apparatus capable of determining deviation amount between magnetic head and magnetic tape based on reading servo pattern
#2Servo zone transition optimization for disk drives
#3Servo zone transition optimization for magnetic disk recording devices
#4Thermally-assisted recording (TAR) patterned-media disk drive with optical detection of write synchronization and servo fields
#5Patterned-media magnetic recording disk with optical contrast enhancement and disk drive using optical contrast for write synchronization
#6Thermal assisted recording (TAR) disk drive capable of controlling the write pulses
#7MAGNETIC DISC APPARATUS AND TRACK FOLLOWING METHOD
#8Alternative sensors for tracking and timing in bit patterned media
#9Recording and reproducing apparatus and recording medium
#10Optoelectronic emitter mounted on a slider
#11Methods and apparatus for generating a clock signal, for writing servo tracks, and for characterising timing errors in a servo track writer
#12Optical pickup and optical disc apparatus provided with the same
#13Magnetic disk and magnetic disk apparatus provided with the same
#14Light-assisted type magnetic recording head, magnetic recording apparatus and laser-assisted type magnetic recording head manufacturing method
#15Control means and method of controlling a current through a coil
#16Lensless optical servo system for an optically assisted disk drive
#17Optical rotational position information detecting apparatus
#18Data storage device using programmable deglitch window to detect saturation of VCM current control
#19Data storage device compensating for hysteretic response of microactuator