Dale B. Chapman

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San Jose, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Baseline correction circuit for PWM data readback systems
- Patent number 6,181,177
- Issue date Jan 30, 2001
- International Business Machines Corporation
- Dale Brian Chapman
- G11 - INFORMATION STORAGE
Information Patent Grant
Baseline correction circuit for pulse width modulated data readback...
- Patent number 5,757,751
- Issue date May 26, 1998
- International Business Machines Corporation
- Dale Brian Chapman
- G11 - INFORMATION STORAGE
Information Patent Grant
Differential amplifier for optical detectors in an optical data sto...
- Patent number 5,287,340
- Issue date Feb 15, 1994
- International Business Machines Corporation
- Dale B. Chapman
- G11 - INFORMATION STORAGE
Information Patent Grant
Clock phase discriminator
- Patent number 4,698,600
- Issue date Oct 6, 1987
- International Business Machines Corporation
- Dale B. Chapman
- G01 - MEASURING TESTING
Information Patent Grant
Phase discriminator and data standardizer
- Patent number 4,682,121
- Issue date Jul 21, 1987
- International Business Machines Corporation
- Dale B. Chapman
- G11 - INFORMATION STORAGE
Information Patent Grant
Data signal detection circuit
- Patent number 4,306,194
- Issue date Dec 15, 1981
- International Business Machines Corporation
- Dale B. Chapman
- G11 - INFORMATION STORAGE