Inventor

CONTRERAS JOHN THOMAS

US41 patents

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

CONTRERAS JOHN THOMAS

CONTRERAS JOHN THOMAS

Integrated lead suspension with multiple crossover coplanar connection of the electrically conductive traces

Magnetic recording disk drive with integrated lead suspension having multiple segments for optimal characteristic impedance

Perpendicular magnetic recording system and write head with transverse auxiliary pole for fast switching of write pole magnetization

Distributed temperature detector architecture for head disk interface systems

Signal-extraction laser-pulse system architecture for thermally-assisted magnetic recording

Disk drive with multiplexed read signal and fly-height signal for fly-height monitoring during writing

Perpendicular magnetic recording system with magnetic precession for fast switching of perpendicular write pole magnetization

Perpendicular magnetic recording system with auxiliary coil and circuitry for fast switching of write pole magnetization

Perpendicular magnetic recording write head with enhancement capacitor on slider body for write current overshoot at write current switching

Perpendicular magnetic recording write head with ladder network compensation circuitry on slider body for write current overshoot at write current switching

Electrical interconnect system with integrated transmission- line compensation components

WESTERN DIGITAL TECH INC

Active low-power termination

Hard disk drive with write gap conductive structure and dual independent interface voltage control circuitry

Two-dimensional magnetic recording (TDMR) disk drive with multiple sensors and circuitry for selection of an active pair of associated amplifiers

Dedicated termination dies for memory systems

Series resistance in transmission lines for die-to-die communication

Active low-power termination

Distributed grouped terminations for multiple memory integrated circuit systems

Printed circuit board compensation structure for high bandwidth and high die-count memory stacks

HITACHI GLOBAL STORAGE TECH

Circuitry for linear control of head flying height using thermal means

Method and apparatus for reducing crosstalk and signal loss in flexing interconnects of an electrical lead suspension

Electrical lead suspension having partitioned air slots

Write through drivers for disk drive systems

High speed digital signaling apparatus and method using reflected signals to increase total delivered current

Preamplifier circuit with signal interference cancellation suitable for use in magnetic storage devices

IBM

Preamplifier circuit suitable for use in magnetic storage devices

Quasi-current sensing input impedance controlled preamplifier for magnetoresistive elements

Preamplifier bias mode to re-initialize a GMR head after losing initialization

High speed FET write driver for an inductive head

Voltage measurement circuit for a magnetoresistive head installed in a disk enclosure

Transducer suspension system including a frequency dependent shunt

ALEX MICHAEL

Perpendicular magnetic recording write head with spin torque oscillator for fast switching of write pole magnetization

Magnetic recording disk drive with write driver to write head transmission line having non-uniform sections for optimal write current pulse overshoot

Perpendicular magnetic recording system with helical write coil and auxiliary coil for fast switching of write pole magnetization

HGST Netherlands BV

Implementing integrated spin-torque oscillator and interface bias control for hard disk drives

Programmable analog feed-forward timer for dynamic wave shaping

Magnetic recording disk drive with write driver to write head transmission line with multiple segments having different numbers of conductive traces

SANDISK TECHNOLOGIES LLC

Transmission line optimization for multi-die systems

Spark gap electrostatic discharge (ESD) protection for memory cards

HITACHI GLOBAL STORAGE TECH NL

Perpendicular magnetic recording system with spin torque oscillator and control circuitry for fast switching of write pole magnetization

GARZON SAMIR Y

Balanced embedded contact sensor with low noise architecture