Inventor
MCDOWELL JUDSON A
US7 patents
Patents
7 patentsUS5548572AAug 20, 1996
Spare and calibration sector management for optical WORM media
IBM104 citations97
US5233584AAug 3, 1993
Optical disk device using high and low data-sensing criteria plus device recalibration for error control
IBM58 citations95
US5293565AMar 8, 1994
Fortmat for data-storing disk media wherein addressable track angular length is independent of disk revolutions
IBM40 citations92
US5526329AJun 11, 1996
Calibration of readback threshold in an optical storage device to determine a blank sector
IBM19 citations91
US5418773AMay 23, 1995
Zoned record carrier
IBM47 citations90
US5430702AJul 4, 1995
Calibration of readback threshold in an optical storage device
IBM5 citations61
US4633333ADec 30, 1986
Detection of instantaneous speed variations in a tape drive
IBM3 citations50