David A. Freitas

Person

Morgan Hill, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Asynchronous successive approximation register (SAR) analog-to-digi...
- Patent number 11,190,199
- Issue date Nov 30, 2021
- Xilinx, Inc.
- Kevin Zheng
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Differential feedback equalizer and method of implementing a differ...
- Patent number 9,876,656
- Issue date Jan 23, 2018
- Xilinx, Inc.
- David A. Freitas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Implementing power savings in HSS clock-gating circuit
- Patent number 7,844,843
- Issue date Nov 30, 2010
- International Business Machines Corporation
- David A. Freitas
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Serial link receiver with wide input voltage range and tolerance to...
- Patent number 7,332,932
- Issue date Feb 19, 2008
- International Business Machines Corporation
- Hayden C. Cranford
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Method and apparatus for improved read-to-write transition time for...
- Patent number 6,954,321
- Issue date Oct 11, 2005
- Hitachi Global Storage Technologies, Netherlands B.V.
- David A. Freitas
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and circuitry for high voltage application with MOSFET techn...
- Patent number 6,525,896
- Issue date Feb 25, 2003
- International Business Machines Corporation
- Paul Wingshing Chung
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive with wide servo burst pattern and wide servo sensing ele...
- Patent number 6,456,449
- Issue date Sep 24, 2002
- International Business Machines Corporation
- Karl Arnold Belser
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for improving baseline recovery of an MR head...
- Patent number 6,377,412
- Issue date Apr 23, 2002
- International Business Machines Corp.
- David A. Freitas
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording channel with voltage-type write driver for use with trans...
- Patent number 6,356,113
- Issue date Mar 12, 2002
- International Business Machines Corp.
- John T. Contreras
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus to sense and report connection integrity of a...
- Patent number 6,130,795
- Issue date Oct 10, 2000
- International Business Machines Corporation
- David Anthony Freitas
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for improving baseline recovery of an MR head...
- Patent number 6,038,090
- Issue date Mar 14, 2000
- International Business Machines Corporation
- David A. Freitas
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus to increase head/AE select robustness for a sy...
- Patent number 5,966,263
- Issue date Oct 12, 1999
- International Business Machines Corporation
- David A. Freitas
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for servo pulse detection with high AC couplin...
- Patent number 5,801,896
- Issue date Sep 1, 1998
- International Business Machines Corporation
- David Anthony Freitas
- G11 - INFORMATION STORAGE
Information Patent Grant
High speed PES demodulator
- Patent number 5,793,556
- Issue date Aug 11, 1998
- International Business Machines Corporation
- David Anthony Freitas
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for servo control with error detection of gray...
- Patent number 5,617,536
- Issue date Apr 1, 1997
- International Business Machines Corporation
- David A. Freitas
- G11 - INFORMATION STORAGE
Information Patent Grant
Sampled position error signal demodulation system for banded data d...
- Patent number 5,602,692
- Issue date Feb 11, 1997
- International Business Machines Corporation
- David A. Freitas
- G11 - INFORMATION STORAGE
Information Patent Grant
Fully differential follower using operational amplifier
- Patent number 5,117,199
- Issue date May 26, 1992
- International Business Machines Corporation
- Chorng K. Wang
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
Implementing Power Savings in HSS Clock-Gating Circuit
- Publication number 20100156466
- Publication date Jun 24, 2010
- International Business Machines Corporation
- David A. Freitas
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
SERIAL LINK RECEIVER WITH WIDE INPUT VOLTAGE RANGE AND TOLERANCE TO...
- Publication number 20080012642
- Publication date Jan 17, 2008
- International Business Machines Corporation
- Hayden C. Cranford
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Method and apparatus for improved read-to-write transition time for...
- Publication number 20030156343
- Publication date Aug 21, 2003
- International Business Machines Corporation
- David A. Freitas
- G11 - INFORMATION STORAGE
Information Patent Application
METHOD AND CIRCUITRY FOR HIGH VOLTAGE APPLICATION WITH MOSFET TECHN...
- Publication number 20020057512
- Publication date May 16, 2002
- PAUL WINGSHING CHUNG
- G11 - INFORMATION STORAGE

David A. Freitas

Person

Patents Grantslast 30 patents

Asynchronous successive approximation register (SAR) analog-to-digi...

Differential feedback equalizer and method of implementing a differ...

Implementing power savings in HSS clock-gating circuit

Serial link receiver with wide input voltage range and tolerance to...

Method and apparatus for improved read-to-write transition time for...

Method and circuitry for high voltage application with MOSFET techn...

Disk drive with wide servo burst pattern and wide servo sensing ele...

Method and apparatus for improving baseline recovery of an MR head...

Recording channel with voltage-type write driver for use with trans...

Method and apparatus to sense and report connection integrity of a...

Method and apparatus for improving baseline recovery of an MR head...

Method and apparatus to increase head/AE select robustness for a sy...

Method and apparatus for servo pulse detection with high AC couplin...

High speed PES demodulator

Method and apparatus for servo control with error detection of gray...

Sampled position error signal demodulation system for banded data d...

Fully differential follower using operational amplifier

Patents Applicationslast 30 patents

Implementing Power Savings in HSS Clock-Gating Circuit

SERIAL LINK RECEIVER WITH WIDE INPUT VOLTAGE RANGE AND TOLERANCE TO...

Method and apparatus for improved read-to-write transition time for...

METHOD AND CIRCUITRY FOR HIGH VOLTAGE APPLICATION WITH MOSFET TECHN...