Inventor

GALBRAITH RICHARD L

US45 patents

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

GALBRAITH RICHARD L

IBM

Thermal asperity compensation for PRML data detection

Method and apparatus for randomizing data in a direct access storage device

Apparatus and method for noise-predictive maximum likelihood detection

Method and apparatus for digital filter control in a partial-response maximum-likelihood disk drive system

Transducer head flying height monitoring methods and apparatus for disk drive system

Method and apparatus for implementing PRML codes with maximum ones

Enhanced noise-predictive maximum likelihood (NPML) data detection method and apparatus for direct access storage device (DASD)

Data detection methods and apparatus for a direct access storage device

Asynchronous gain adjustment for PRML disk drive systems

Timing loop method and apparatus for PRML data detection

Error measurement circuit

Distributed arithmetic digital filter in a partial-response maximum-likelihood disk drive system

Asynchronous servo identification/address mark detection for PRML disk drive ssytem

Relative timing precompensation of high-speed pulse signals for digital magnetic recoding

Method and apparatus for precompensation value determination in a PRML data channel

Maximum transition run encoding and decoding systems

Method and system for encoding data for high performance error control

Self-equalization method for partial-response maximum-likelihood disk drive systems

Self contained equalization method and apparatus

Method and apparatus for identifying the start of a data field using a fault tolerant sync word

Method and apparatus for adaptive chip trim adjustment

Equalizer adjustment for partial-response maximum-likelihood disk drive systems

Adaptable clock control methods and apparatus for a direct access disk drive system

Data storage systems

Combined read and write VCO for DASD PRML channels

Data coding for data storage systems

WESTERN DIGITAL TECH INC

Data storage device extending erasures for LDPC-type decoding

Data storage device employing embedded servo sectors for magnetic tape

Data storage device employing multi-tier coding for magnetic tape

Data storage device employing memory efficient processing of un-converged codewords

Data storage device processing problematic patterns as erasures

Data storage device channel encoding current data using redundancy bits generated over preceding data

Data storage device synchronizing first channel based on sync mark detected in second channel

Data storage device transmitting configuration data to a preamp circuit over a read line

Magnetic recording tape having embedded servo sectors on data tracks

Data storage device employing multi-level parity sectors for data recovery procedure

Data storage device emphasizing parity sector processing of un-converged codewords

HITACHI GLOBAL STORAGE TECH

Apparatus for providing dynamic equalizer optimization

Apparatus using a lengthened equalization target filter with a matched filter metric in a viterbi detector

Apparatus for providing data dependent detection in a data read channel

Method and apparatus for data coding for high density recording channels exhibiting low frequency contents

Method and apparatus for providing a read channel having combined parity and non-parity post processing

Method and apparatus for providing a read channel having imbedded channel signal analysis

HGST Netherlands BV

Track error-correcting code extension

CIDECIYAN ROY D

Data storage systems