Inventor

CALL DAVID ERNEST

US4 patents

⚠️ This page may combine multiple inventors who share the name “CALL DAVID ERNEST”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

IBM

1 patent

US5640381AJun 17, 1997

Laser power-drive circuit having a scaling DAC supplying a scaled reference signal to a plurality of scaled DAC's that supply a plurality of scaled output signals

IBM54 citations90

HITACHI GLOBAL STORAGE TECH NL

1 patent

US8040131B2Oct 18, 2011

Method for testing the acceptability of a magnetic read sensor

HITACHI GLOBAL STORAGE TECH NL5 citations60

HITACHI GLOBAL STORAGE TECH

1 patent

US7564236B1Jul 21, 2009

Thermal fly height induced shield instability screening for magnetoresistive heads

HITACHI GLOBAL STORAGE TECH6 citations60

HGST Netherlands BV

1 patent

US9454981B1Sep 27, 2016

Structures and methods for parallel testing of multiple read heads in two dimensional magnetic recording sliders

HGST Netherlands BV1 citations38

CALL DAVID ERNEST

IBM

Laser power-drive circuit having a scaling DAC supplying a scaled reference signal to a plurality of scaled DAC&#39;s that supply a plurality of scaled output signals

HITACHI GLOBAL STORAGE TECH NL

Method for testing the acceptability of a magnetic read sensor

HITACHI GLOBAL STORAGE TECH

Thermal fly height induced shield instability screening for magnetoresistive heads

HGST Netherlands BV

Structures and methods for parallel testing of multiple read heads in two dimensional magnetic recording sliders

Laser power-drive circuit having a scaling DAC supplying a scaled reference signal to a plurality of scaled DAC's that supply a plurality of scaled output signals