Alfredo Sam Chu

Person

Prior Lake, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Laser boost and duration optimization
- Patent number 10,657,987
- Issue date May 19, 2020
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
In-field laser calibration for heat-assisted magnetic recording hea...
- Patent number 10,395,673
- Issue date Aug 27, 2019
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Laser current calibration using preamplifier
- Patent number 10,152,997
- Issue date Dec 11, 2018
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Laser boost and duration optimization
- Patent number 10,147,453
- Issue date Dec 4, 2018
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
In-field laser calibration for heat-assisted magnetic recording hea...
- Patent number 10,127,930
- Issue date Nov 13, 2018
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Laser calibration for heat-assisted magnetic recording head using i...
- Patent number 10,083,716
- Issue date Sep 25, 2018
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Shingled magnetic recording for writing tracks of variable track width
- Patent number 10,008,231
- Issue date Jun 26, 2018
- Seagate Technology LLC
- Steven Granz
- G11 - INFORMATION STORAGE
Information Patent Grant
Activating a magnetic writer to recover from read errors due to rea...
- Patent number 9,997,176
- Issue date Jun 12, 2018
- Seagate Technology LLC
- Wenzhong Zhu
- G11 - INFORMATION STORAGE
Information Patent Grant
Changing write coil current in response to reader instability
- Patent number 9,978,403
- Issue date May 22, 2018
- Seagate Technology LLC
- Wenzhong Zhu
- G11 - INFORMATION STORAGE
Information Patent Grant
Laser bias current control
- Patent number 9,916,850
- Issue date Mar 13, 2018
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Selecting a maximum laser power for a calibration based on a previo...
- Patent number 9,892,752
- Issue date Feb 13, 2018
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Selecting laser power based on writing to a set of consecutive user...
- Patent number 9,842,619
- Issue date Dec 12, 2017
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for writing test tracks on a magnetic recordin...
- Patent number 9,734,862
- Issue date Aug 15, 2017
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Sorting of HAMR read/write heads based on reader and writer widths
- Patent number 9,704,519
- Issue date Jul 11, 2017
- Seagate Technology LLC
- Wenzhong Zhu
- G11 - INFORMATION STORAGE
Information Patent Grant
Bidirectional shingled magnetic recording in a heat-assisted magnet...
- Patent number 9,679,597
- Issue date Jun 13, 2017
- Seagate Technology LLC
- Wenzhong Zhu
- G11 - INFORMATION STORAGE
Information Patent Grant
Heat-assisted magnetic recording device capable of detecting head m...
- Patent number 9,653,121
- Issue date May 16, 2017
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Laser mode hopping detection in a heat-assisted magnetic recording...
- Patent number 9,595,288
- Issue date Mar 14, 2017
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Laser adjustment during field operation of a heat-assisted magnetic...
- Patent number 9,589,587
- Issue date Mar 7, 2017
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Determining optical degradation in a heat-assisted read/write head
- Patent number 9,548,068
- Issue date Jan 17, 2017
- Seagate Technology LLC
- Tim Rausch
- G11 - INFORMATION STORAGE
Information Patent Grant
Defining a maximum sequential write duration for a data storage dev...
- Patent number 9,508,369
- Issue date Nov 29, 2016
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Data storage device optimization based on adjacent track interference
- Patent number 9,502,061
- Issue date Nov 22, 2016
- Seagate Technology LLC
- Wenzhong Zhu
- G11 - INFORMATION STORAGE
Information Patent Grant
Adaptive HAMR laser power data storage device
- Patent number 9,478,248
- Issue date Oct 25, 2016
- Seagate Technology LLC
- Michael A. Cordle
- G11 - INFORMATION STORAGE
Information Patent Grant
Near-field transducer efficiency monitoring system
- Patent number 9,396,750
- Issue date Jul 19, 2016
- Seagate Technology LLC
- Alfredo Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Compensation for track misalignment due to degradation of HAMR writ...
- Patent number 9,361,920
- Issue date Jun 7, 2016
- Seagate Technology LLC
- Wenzhong Zhu
- G11 - INFORMATION STORAGE
Information Patent Grant
Qualifying a recording head based on symmetry of a cross-track profile
- Patent number 9,349,415
- Issue date May 24, 2016
- Seagate Technology LLC
- Drew Michael Mader
- G11 - INFORMATION STORAGE
Information Patent Grant
Laser adjustment during field operation of a heat-assisted magnetic...
- Patent number 9,311,951
- Issue date Apr 12, 2016
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Laser temperature calibration in a HAMR device
- Patent number 9,236,081
- Issue date Jan 12, 2016
- Seagate Technology LLC
- Alfredo S. Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Current boost profile applied to laser during heat-assisted magneti...
- Patent number 9,202,506
- Issue date Dec 1, 2015
- Seagate Technology LLC
- Drew Michael Mader
- G11 - INFORMATION STORAGE
Information Patent Grant
Near-field transducer efficiency monitoring system
- Patent number 9,142,244
- Issue date Sep 22, 2015
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Grant
Determination of reader to writer crosstrack offset via a magnetic...
- Patent number 9,093,091
- Issue date Jul 28, 2015
- Seagate Technology LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
IN-FIELD LASER CALIBRATION FOR HEAT-ASSISTED MAGNETIC RECORDING HEA...
- Publication number 20190287554
- Publication date Sep 19, 2019
- SEAGATE TECHNOLOGY LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Application
HEAT-ASSISTED SHINGLED MAGNETIC RECORDING WITH VARIABLE TRACK WIDTHS
- Publication number 20180047422
- Publication date Feb 15, 2018
- SEAGATE TECHNOLOGY LLC
- Steven Granz
- G11 - INFORMATION STORAGE
Information Patent Application
HEAT-ASSISTED SHINGLED MAGNETIC RECORDING WITH VARIABLE TRACK WIDTHS
- Publication number 20170330591
- Publication date Nov 16, 2017
- SEAGATE TECHNOLOGY LLC
- Steven Granz
- G11 - INFORMATION STORAGE
Information Patent Application
LASER ADJUSTMENT DURING FIELD OPERATION OF A HEAT-ASSISTED MAGNETIC...
- Publication number 20170092318
- Publication date Mar 30, 2017
- SEAGATE TECHNOLOGY LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Application
DEFINING A MAXIMUM SEQUENTIAL WRITE DURATION FOR A DATA STORAGE DEV...
- Publication number 20160267930
- Publication date Sep 15, 2016
- SEAGATE TECHNOLOGY LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE
Information Patent Application
Adaptive HAMR Laser Power Data Storage Device
- Publication number 20160055881
- Publication date Feb 25, 2016
- Seagate Technology LLC
- Michael A. Cordle
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
NEAR-FIELD TRANSDUCER EFFICIENCY MONITORING SYSTEM
- Publication number 20150380040
- Publication date Dec 31, 2015
- SEAGATE TECHNOLOGY LLC
- Alfredo Chu
- G11 - INFORMATION STORAGE
Information Patent Application
NEAR-FIELD TRANSDUCER EFFICIENCY MONITORING SYSTEM
- Publication number 20150235665
- Publication date Aug 20, 2015
- SEAGATE TECHNOLOGY LLC
- Alfredo Sam Chu
- G11 - INFORMATION STORAGE

Alfredo Sam Chu

Person

Patents Grantslast 30 patents

Laser boost and duration optimization

In-field laser calibration for heat-assisted magnetic recording hea...

Laser current calibration using preamplifier

Laser boost and duration optimization

In-field laser calibration for heat-assisted magnetic recording hea...

Laser calibration for heat-assisted magnetic recording head using i...

Shingled magnetic recording for writing tracks of variable track width

Activating a magnetic writer to recover from read errors due to rea...

Changing write coil current in response to reader instability

Laser bias current control

Selecting a maximum laser power for a calibration based on a previo...

Selecting laser power based on writing to a set of consecutive user...

Method and apparatus for writing test tracks on a magnetic recordin...

Sorting of HAMR read/write heads based on reader and writer widths

Bidirectional shingled magnetic recording in a heat-assisted magnet...

Heat-assisted magnetic recording device capable of detecting head m...

Laser mode hopping detection in a heat-assisted magnetic recording...

Laser adjustment during field operation of a heat-assisted magnetic...

Determining optical degradation in a heat-assisted read/write head

Defining a maximum sequential write duration for a data storage dev...

Data storage device optimization based on adjacent track interference

Adaptive HAMR laser power data storage device

Near-field transducer efficiency monitoring system

Compensation for track misalignment due to degradation of HAMR writ...

Qualifying a recording head based on symmetry of a cross-track profile

Laser adjustment during field operation of a heat-assisted magnetic...

Laser temperature calibration in a HAMR device

Current boost profile applied to laser during heat-assisted magneti...

Near-field transducer efficiency monitoring system

Determination of reader to writer crosstrack offset via a magnetic...

Patents Applicationslast 30 patents

IN-FIELD LASER CALIBRATION FOR HEAT-ASSISTED MAGNETIC RECORDING HEA...

HEAT-ASSISTED SHINGLED MAGNETIC RECORDING WITH VARIABLE TRACK WIDTHS

HEAT-ASSISTED SHINGLED MAGNETIC RECORDING WITH VARIABLE TRACK WIDTHS

LASER ADJUSTMENT DURING FIELD OPERATION OF A HEAT-ASSISTED MAGNETIC...

DEFINING A MAXIMUM SEQUENTIAL WRITE DURATION FOR A DATA STORAGE DEV...

Adaptive HAMR Laser Power Data Storage Device

NEAR-FIELD TRANSDUCER EFFICIENCY MONITORING SYSTEM

NEAR-FIELD TRANSDUCER EFFICIENCY MONITORING SYSTEM