Inventor

ANNAMPEDU VISWANATH

US51 patents

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

ANNAMPEDU VISWANATH

AGERE SYSTEMS INC

Method and apparatus for maximum likelihood detection of data employing interpolation with compensation of signal asymmetry

Synchronizing an asynchronously detected servo signal to synchronous servo demodulation

Asynchronous servo RRO detection employing interpolation

Detection of recorded data employing interpolation with gain compensation

Maximum likelihood detection of asynchronous servo data employing interpolation

Scheme to improve performance of timing recovery systems for read channels in a disk drive

Servo data detection in the presence or absence of radial incoherence using digital interpolators

Servo data detection in presence of radial incoherence using multiple data detectors

Systems and methods for accessing data from a variable polarity head assembly

Systems and methods for improving disk drive synchronization

Systems and methods for acquiring modified rate burst demodulation in servo systems

Systems and methods for estimating time corresponding to peak signal amplitude

Systems and methods for improved timing recovery

Systems and methods for reducing the effects of ADC mismatch

Address mark detection

Method and apparatus for improving threshold detection of servo data in the presence of signal asymmetry

Channel optimization metrics

Asynchronous servo RRO detection employing interpolation

Auto-ranging attenuators for read channels

ANNAMPEDU VISWANATH

Systems and methods for diversity combined data detection

Systems and methods for sector address mark detection

Method and apparatus for improved address mark detection

Systems and methods for improved synchronization between an asynchronously detected signal and a synchronous operation

Methods and systems for estimating time corresponding to peak signal amplitude

Systems and methods for improved timing recovery

Methods and apparatus for gain estimation using servo data with improved bias correction

Flaw scan circuit for repeatable run out (RRO) data

Methods and apparatus for improved detection of servo sector data using single bit error correction

Methods and apparatus for validating detection of RRO address marks

Systems and methods for sequence detection in data processing

Systems and methods for signal polarity determination

Systems and methods for spiral waveform detection

Systems and methods for memory efficient repeatable run out processing

LSI CORP

Systems and methods for fly-height control using servo address mark data

Adaptive continuous time linear equalizer

Receiver with pipelined tap coefficients and shift control

Alignment of sampling phases in a multi-channel time-interleaved analog-to-digital converter

Methods and apparatus for measuring servo address mark distance in a read channel using selective fine phase estimate

Clock and data recovery architecture with adaptive digital phase skew

System and method for determining channel loss in a dispersive communication channel at the Nyquist frequency

Timing phase estimation for clock and data recovery

NVIDIA CORP

Decision feed forward equalization for intersymbol interference cancelation

Clock data recovery convergence in modulated partial response systems

Clock data recovery convergence using signed timing injection

Clock data recovery convergence using signed timing injection

Decision feed forward equalization for partial response equalized signal including pre-cursor cancelation

Decision feed forward equalization for partial response equalized signal including pre-cursor cancelation

ZHANG XUN

Systems and methods for reduced format data processing

Systems and methods for pattern detection

MATHEW GEORGE

Systems and methods for fly-height control using servo data