Julian Lewkowicz

Person

Boulder, CO, US

People

Patents Grantslast 30 patents

Information Patent Grant
Compensated laser drive circuit
- Patent number 5,309,461
- Issue date May 3, 1994
- International Business Machines Corporation
- David E. Call
- G11 - INFORMATION STORAGE
Information Patent Grant
Laser power calibration by measuring laser drive current at out of...
- Patent number 5,216,659
- Issue date Jun 1, 1993
- International Business Machines
- David E. Call
- G11 - INFORMATION STORAGE
Information Patent Grant
Calibrating and power-protecting laser drive circuits
- Patent number 5,185,734
- Issue date Feb 9, 1993
- International Business Machines Corporation
- David E. Call
- G11 - INFORMATION STORAGE
Information Patent Grant
Data detection employing high-speed baseline tracking compensation
- Patent number 5,101,395
- Issue date Mar 31, 1992
- International Business Machines Corporation
- Silvio A. Cardero
- G11 - INFORMATION STORAGE
Information Patent Grant
Write calibration for magnetooptic disk recorders
- Patent number 5,070,495
- Issue date Dec 3, 1991
- International Business Machines Corporation
- Warren L. Bletscher
- G11 - INFORMATION STORAGE
Information Patent Grant
Acquiring focus in optical systems using a focus error signal and a...
- Patent number 4,998,233
- Issue date Mar 5, 1991
- International Business Machines Corporation
- Joseph H. DiMatteo
- G11 - INFORMATION STORAGE
Information Patent Grant
Thermally-induced recording with reduced harmonic distortion
- Patent number 4,731,773
- Issue date Mar 15, 1988
- International Business Machines Corporation
- Julian Lewkowicz
- G11 - INFORMATION STORAGE
Information Patent Grant
Biasing of magnetoresistive read head using gyrators
- Patent number 4,191,977
- Issue date Mar 4, 1980
- International Business Machines Corporation
- Julian Lewkowicz
- G11 - INFORMATION STORAGE
Information Patent Grant
Automatic AC biasing of a magnetoresistive element
- Patent number 4,075,671
- Issue date Feb 21, 1978
- International Business Machines Corporation
- Samuel David Cheatham
- G11 - INFORMATION STORAGE

Julian Lewkowicz

Person

Patents Grantslast 30 patents

Compensated laser drive circuit

Laser power calibration by measuring laser drive current at out of...

Calibrating and power-protecting laser drive circuits

Data detection employing high-speed baseline tracking compensation

Write calibration for magnetooptic disk recorders

Acquiring focus in optical systems using a focus error signal and a...

Thermally-induced recording with reduced harmonic distortion

Biasing of magnetoresistive read head using gyrators

Automatic AC biasing of a magnetoresistive element