Data storage device pre-biasing write current for energy assisted magnetic recording

Disk device

Management of actuator dynamics in a multiple actuator hard disk drive with an unequal number of heads on the two outer arms of each actuator

Two-stage audio gain circuit based on analog-to-digital conversion and audio terminal

Data storage device with separate actuators

Magnetic disk device

Magnetic recording and reproducing device

Asynchronous asymmetry compensation for data read from a storage medium

Method of performing read/write process on recording medium, parameter adjustment method, storage device, computer system, and storage medium employing the methods

Asynchronous asymmetry compensation for data read from a storage medium

Method of performing read/write process on recording medium, parameter adjustment method, storage device, computer system, and storage medium employing the methods

Optical medium reproduction apparatus and optical medium reproduction method

Asynchronous asymmetry compensation for data read from a storage medium

Serial port communication for storage device using single bidirectional serial data line

Optical disc information device and information processing device

Multiplexed communication in a storage device

Non-decision directed magnetoresistive asymetry estimation

Disk drive slider with sense amplifier for coupling to a preamp through a supply/bias line and a read signal line

Signal processing device, signal processing method, and computer program

Optical disk information device and information processing device

Disk drive read circuit comprising an AC coupled sense amplifier for amplifying a read signal

Data storage device and method for generating a reference clock signal for data storage device

Programmable analog feed-forward timer for dynamic wave shaping

Zero gain start and gain acquisition based on adaptive analog-to-digital converter target

Pre-amplifier output stage with integrated test buffer

Systems and methods for filter initialization and tuning

Laser apparatus and bio-imaging apparatus

Implementing spin-torque oscillator sensing with enhanced integrated demodulator for hard disk drives

Magnetic Recording System With Multi-Level Write Current

Determining coefficients for digital low pass filter given cutoff and boost values for corresponding analog version

Read channel with selective oversampled analog to digital conversion

Breakdown prediction device, breakdown prediction method, and breakdown prediction program

Reproduction signal evaluation method, reproduction signal evaluation unit, and optical disk device adopting the same

Systems and methods for reduced format data processing

Signal transmission between a controller and an optical pickup unit

Apparatus and method to read information from an information storage medium

Method and apparatus for defect recovery

Gain control with multiple integrators

Method of performing read/write process on recording medium, parameter adjustment method, storage device, computer system, and storage medium employing the methods

Wobble signal extracting circuit, method for extracting wobble signal, and optical disk unit

Systems and methods for filter initialization and tuning

Tunable biquad filter circuit including phase shift detection and methods for using such

Recording apparatus

Optical disc device

Optical disk device, optical disk control method, and integrated circuit

Systems and methods for hybrid algorithm gain adaptation

Disk drive employing a preamp comprising read/write pass throughs for cascading integrated circuits

Dual gain control for magnetic data storage system

DETECTOR AND DETECTION METHOD

DETECTOR AND DETECTION METHOD

Disc discrimination apparatus and method

APPARATUS FOR GENERATING VITERBI-PROCESSED DATA

OPTICAL DISC DRIVE, OPTICAL STORAGE MEDIUM, OPTICAL STORAGE MEDIUM INSPECTION APPARATUS, AND OPTICAL STORAGE MEDIUM INSPECTION METHOD

Methods for overwite cycle improvement of optical storage medium and related machine readable media

Closely coupled vector sequencers for a read channel pipeline

Reproducing device and reproducing method

Systems and methods for timing and gain acquisition

Recorded Media Enhancement Method

Method of operating pre-amplifier, pre-amplifier, and apparatuses including the same

MULTI-MODE LOOP ADAPTATION SCHEME FOR HIGH-DENSITY DATA RECORDING CHANNEL

Systems and methods for format efficient timing recovery in a read channel

Apparatus and method to read information from an information storage medium

Apparatus and method to read information from an information storage medium

Current gain control system

Reproducing power adjusting method, optical information recording/reproducing apparatus and information recording media

SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, AND COMPUTER PROGRAM

Method and apparatus for processing optical disc signal

Systems and methods for reduced latency loop recovery

Optical disk playback apparatus and optical disk recording/playback apparatus

STORAGE DEVICE, CONTROL METHOD AND CONTROLLER

Signal processing device

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

Dual gain control for magnetic data storage system

AGC loop with weighted zero forcing and LMS error sources and methods for using such

Gain control with multiple integrators

Optical disk drive device and method

Comparator and optical-disc recording/reproduction apparatus

CLOCK SIGNAL GENERATION DEVICE

METHOD FOR CURRENT REDUCTION FOR AN ANALOG CIRCUIT IN A DATA READ-OUT SYSTEM

Information reproducing apparatus and method, and computer program

Clock-data recovery and method for binary signaling using low resolution ADC

Wobble signal detector including the signal processor, optical disk apparatus including the wobble signal detector and read-write optical disk drive including the wobble signal detector

Reproduction signal evaluation method, reproduction signal evaluation unit, and optical disk device adopting the same

Information recording apparatus and method, and computer program

Optical disc drive, optical storage medium, optical storage medium inspection apparatus, and optical storage medium inspection method

Detection of synchronization mark from output of matched filter upstream of Viterbi detector

Multi-bit phase alignment for synchronization mark pattern matching

Systems and methods for reducing the effects of ADC mismatch

LAND PREPIT SIGNAL DETECTING CIRCUIT

Methods and devices for detecting wobbles on an optical disc

OPTICAL DISK DEVICE AND CONTROL METHOD

Optical disk device and control method

ADJACENT-TRACK-ERASURE (ATE) REFRESH WITH INCREASED TRACK RESOLUTION FOR OFTEN-WRITTEN AREAS

Signal regenerator

REPRODUCING INFORMATION FROM ANINFORMATION CARRIER

Optical disc apparatus

Compensating the effects of static head-media spacing variations and nonlinear transition shift in heat assisted magnetic recording

Gain control for data-dependent detection in magnetic storage read channels

Signal value holding apparatus, signal value holding method, signal value control system, signal value control method, playback apparatus, and playback method

Conditioning circuit that spectrally shapes a serviced bit stream

OPTICAL DISK APPARATUS

APPARATUS AND METHOD FOR CORRECTION OF SIGNAL DISTORTION

Wobble signal extraction circuit and optical disk device

Head IC, read circuit, media storage device and amplifier gain adjustment method for head IC

Device and method for generating track-crossing signal in optical disc drive

Head IC that adjusts the amplitude level of a read signal of a head

Optical disc recording and playback apparatus

Optical disc device and defect detection method for optical disc medium

OPTICAL INFORMATION REPRODUCING METHOD, OPTICAL INFORMATION REPRODUCING APPARATUS AND OPTICAL INFORMATION RECORDING MEDIUM

Reproducing apparatus and reproduction method

Coding apparatus, decoding apparatus, amplitude adjustment apparatus, recorded information reader, signal processing apparatus and storage system

METHODS AND APPARATUS TO VARY INPUT IMPEDANCE OF A HARD DISK DRIVE READ PREAMPLIFIER

Cyclic memory and disc device

Reproducing apparatus, reproducing method, recording and reproducing apparatus, recording and reproducing method, recording apparatus, and recording method

OPTICAL DISC APPARATUS AND OPTICAL DISC REPRODUCTION METHOD

Device, method for processing RF signal, and optical disk drive utilizing the same

Thermal asperity detector and methods for use therewith

FREQUENCY, PHASE, AND GAIN ESTIMATION TECHNIQUE FOR USE IN A READ CHANNEL RECEIVER OF A HARD DISK DRIVE

Base line control electronics architecture

Method for Improving the Playability of Non-Ideal Optical Carriers

Read channel apparatus for asynchronous sampling and synchronous equalization

Optical storage medium inspection method for determining if an optical storage medium is good or defective

Optical disc drive, optical storage medium, optical storage medium inspection apparatus, and optical storage medium inspection method

Read channel averaging

GAIN CONTROL SYSTEM AND CALIBRATION METHOD THEREOF

Controller of optical disk device

Optical disc drive, optical storage medium, optical storage medium inspection apparatus, and optical storage medium inspection method

Optical storage medium inspection apparatus for determining whether an optical storage medium is good or defective

Optical disc drive, optical storage medium, optical storage medium inspection apparatus, and optical storage medium inspection method

Semiconductor Integrated Circuit Having Jitter Measuring Function

Optical disc drive, optical storage medium, optical storage medium inspection apparatus, and optical storage medium inspection method

Bit stream conditioning circuit having adjustable input sensitivity

Storage apparatus and control apparatus thereof

Holographic Storage System

Disk Device

Gain control device, storage device and, gain control method

Information recording and reproducing apparatus, and information recording and reproducing method

Control device and storage device

Loop control apparatus and method thereof

Method and apparatus for blank detection of an optical disc

Apparatus for detecting the wobble carrier frequency of an optical disk and method for same

Wobble detection circuit and method for processing wobble signals

METHOD OF GAIN CONTROL AND CONTROLLER THEREOF

APPARATUS AND METHOD OF GENERATING ZERO CROSSING SIGNAL FOR OPTICAL DISC DRIVE

APPARATUS AND METHOD OF DETECTING A TARGET PEAK VALUE AND A TARGET BOTTOM VALUE OF AN INPUT SIGNAL

Automatic gain control circuit and signal reproducing device

Disk drive

Read channel operable to calibrate a coefficient of a filter, such as an FIR filter, disposed before an interpolated-timing-recovery circuit, and related integrated circuit, system, and method

Parameter calibrating apparatus and method for a controller

Compensating the effects of static head-media spacing variations and nonlinear transition shift in heat assisted magnetic recording

Optical Information recording/reproducing apparatus

Fly on demand in situ clearance measurement concept in hard disk drive

Method and apparatus for reproducing optical information

Apparatus for controlling discrete data in disk overwrite area or power calibration area

Method and apparatus for detecting/correcting defect area and related disk drive

Method and system for controlling the level of a data signal read from an optical disc

Recording current optimization method of hard disk drive, recording medium storing program to execute the method and apparatus employing the same

Signal process device and method for obtaining wobble signal

Read channel apparatus for asynchronous sampling and synchronous equalization

Automatic gain controller

Automatic gain controllers and methods for controlling voltage of control gain amplifiers

METHOD AND APPARATUS FOR STABLIZING SERVO CLOSED-LOOP GAIN, PLL CLOCK AND SERVO SIGNAL THROUGH SETTING APPROPRIATE GAIN VALUE TO SERVO CLOSED-LOOP GAIN AND HOLDING PLL CLOCK AND SERVO SIGNAL WHEN POWER OF PICK-UP HEAD CHANGES

Phase locking apparatus, phase locking method, data reproducing apparatus, data reproducing method, and programs

Method and device for protecting a preamplifier in reading signals on a defect disc

Method and device for protecting a PLL in reading signals on a defect disc

Method and device for protecting a slicer in reading signals on a defect disc

Method and device for protecting a servo in reading signals on a defect disc

Method of verifying preamplifier circuit functions, and magnetic record regeneration apparatus using the same

Asymmetry compensator for partial response maximum likelihood (PRML) decoder

Gain adjustment method, gain adjustment circuit, and optical disc device having same gain adjustment circuit

Optical information reproduction apparatus and optical information reproduction method

Optical information device, optical storage medium, optical storage medium inspection device, and optical storage inspection method

Signal processing apparatus and method for optical disk system

Frequency, phase, and gain estimation technique for use in a read channel receiver of a hard disk drive

Optical disc apparatus

Information carrier and devices for scanning the information carrier

Optical disc apparatus and information playback method

Optical disk system with non-linearly controlled amplifier

Apparatus for providing head amplitude characterization using gain loops

Optical reproducing apparatus and method with automatic gain control

AGC circuit, AGC circuit gain control method, and program for the AGC circuit gain control method

Signal processing circuit for optical disc drivers and the related method

Apparatus and method for detecting a pre-pit signal

Method for automatic gain control of encoded digital audio streams

RF circuit for disc playing apparatus

Disk device and disk reproduction method that prevents a wrong reproducing operation when a defect on the disk is determined

Detection of recorded data employing interpolation with gain compensation

Adaptive equalization apparatus and adaptive equalization method

Method and apparatus for recovering read errors in a disk drive

Method for adaptive bit recovery

Switchable inductor for boost or matching optimization

Automatic skew calibration circuit for pattern-dependent dynamic wave shaping for HDD preamplifier write

Management of actuator dynamics in a multiple actuator hard disk drive with an unequal number of heads on the two outer arms of each actuator

Data storage device comprising dual channel preamp circuit

Loop consistency using multiple channel estimates

Independent head, dual reader control logic

Sensor circuit supporting multiple transducers with dedicated and shared terminals

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

Disk device and method for manufacturing disk device

Individually programmable preamplifier

Data storage device updating laser power during non-write mode for heat assisted magnetic recording