Inventor
CALL DAVID E
US11 patents
⚠️ This page may combine multiple inventors who share the name “CALL DAVID E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IBM
10 patentsUS5216659AJun 1, 1993
Laser power calibration by measuring laser drive current at out of focus and in focus conditions
IBM67 citations95
US5268893ADec 7, 1993
Write power calibration utilizing least squares fit of read-back signals for moving media memory
IBM66 citations94
US5450383ASep 12, 1995
Monitoring and adjusting laser write power in an optical disk recorder using pulse-width modulated power level checking signals
IBM38 citations92
US5309461AMay 3, 1994
Compensated laser drive circuit
IBM47 citations92
US5185734AFeb 9, 1993
Calibrating and power-protecting laser drive circuits
IBM37 citations92
US5526329AJun 11, 1996
Calibration of readback threshold in an optical storage device to determine a blank sector
IBM19 citations91
US5172365ADec 15, 1992
System for predicting laser end-of life from the power vs. current curve of the diode
IBM23 citations88
US5383175AJan 17, 1995
Laser power control with defocusing offset during data recording
IBM12 citations73
US5602806AFeb 11, 1997
Magneto-optical recording device capable of reducing thermal interference between recording pits
IBM7 citations72
US5430702AJul 4, 1995
Calibration of readback threshold in an optical storage device
IBM5 citations61