Inventor

HUTCHINS ROBERT ALLEN

US64 patents

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

HUTCHINS ROBERT ALLEN

IBM

Timing based servo longitudinal addressing

Dynamic method for asymmetry compensation in a storage read channel

Apparatus, system, and method for adaptive asynchronous equalization using leakage

Dynamically adapting a read channel equalizer

Dynamically adapting a magnetic tape read channel equalizer

Data read transducers for determining lateral position of a tape head with respect to longitudinal servo bands of magnetic tape

Synchronous interface for asynchronous data detection channels

Acquisition of highly variable data frequency by digital edge processing

Servo channel for tape drive systems

Integrated calibration apparatus for a multi-mode information storage system

Detection of indexed servo positions displaced from servo track edges

Programmable PPM/PWM writing system for optical disk

Data-transition threshold following in optical recording

Integrated multiple channel data reliability testing for a magnetic tape drive

Synchronization of symmetric timing based servo bursts

Common state-space multi-channel digital sample timing phase control of multiple read channels for correlated signals

Recovering servo information from a synchronous servo channel

Using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal

Error correction coding of longitudinal position information

Multi-channel data detection phase locked loop error combination logic

Methods for multi-channel data detection phase locked loop error combination

Methods for multi-channel data detection phase locked loop frequency error combination

Asynchronous read channel shaped toward generalized partial response characteristics

Apparatus, system, and method for timing based servo tape formating

Using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal

Apparatus method and system for concurrent gain control in a magnetic read channel

Using at least one servo channel to provide timing recovery and timing information to data channels

Dynamically adapting a magnetic tape read channel equalizer

System and method for generating an amplitude error signal in a magnetic tape recording channel

Maximum likelihood detection with difference metrics and programmed coefficients

Configurable read detection channel and method for decoding data stored within a data storage medium

Method and apparatus for testing the digital read channel circuit of a data storage device

Apparatus and method for stabilizing a data tape cartridge for transport

Programmable digital centerline tracking threshold apparatus and method

Programmable digital envelope following threshold generation apparatus and method

Maximum likelihood detection with programmed coefficients

Methods and systems for delay compensation in global PLL-based timing recovery loops

Multi-channel data detection phase locked loop frequency error combination logic

Oversampled channel response identification

Real-time channel adaptation

Magnetic tape read channel signal values developed employing intermediate bits of the path memory of a PRML Viterbi detector

Magnetic tape read channel signal values developed employing intermediate bits of the path memory of a PRML viterbi detector

CHERUBINI GIOVANNI

Determining a reference waveform used by a correlator in a servo channel

Determining a reference waveform used by a correlator in a servo channel

BUI NHAN XUAN

Method and apparatus to position a head module comprising servo elements and a plurality of data elements

Apparatus and method to transfer data to and from a sequential information storage medium

CHRISTENSEN ERIC ROLF

Technique for fixing tap coefficients in a programmable finite-impulse-response equalizer

Fixing tap coefficients in a programmable finite-impulse-response equalizer

INTERNAT BUSSINESS MACHINES CO

Apparatus, system, and method for the velocity proportional clocking of time base servo tape storage devices

ELEFTHERIOU EVANGELOS S

System, method, and computer program product for characterizing media associated with data storage channels