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9042049 Adaptive soft-output detector for magnetic tape read channels  
In accordance with one embodiment, a computer program product includes a computer readable storage medium having computer readable program code that is readable and/or executable by a processor...
9036288 Method and system for reading closely-spaced data tracks  
A method for reading a track of data may include positioning a read head at an initial position relative to the track of data and obtaining initial track signals, filtering the initial track...
9036287 Adaptive soft-output detector for magnetic tape read channels  
In one embodiment, a method includes passing a signal through a noise whitening filter, passing the signal through a soft detector to calculate first soft information, passing the signal through...
9019647 Systems and methods for conditional positive feedback data decoding  
The present inventions are related to systems and methods for information data processing included selective decoder message determination. In one example, a data processing system is disclosed...
9013821 Data storage device employing one-dimensional and two-dimensional channels  
A data storage device is disclosed comprising a disk comprising a plurality of data tracks. A first data track is read to generate a first read signal that is sampled to generate first signal...
9013820 Method of reducing thermal stress within a magnetic head  
Devices and methods for reducing thermal stress within a head of a storage device are disclosed. In one or more embodiments, a method includes writing a selected pattern to a storage medium of a...
8988814 Storage device, controller, and recording and reproducing method  
According to one embodiment, a storage device includes a data conversion unit that coverts user data of n bits, into m three-ary symbols, a recording medium that records the symbols as a signal of...
8976471 Systems and methods for two stage tone reduction  
Systems and method relating generally to data processing, and more particularly to systems and methods for tone reduction in relation to data transmission. In one case, a data processing system is...
8947812 Data storage device comprising equalizer filter and inter-track interference filter  
A data storage device is disclosed comprising a head actuated over a disk. A read signal from the head is sampled to generate signal samples, and the signal samples are filtered with an equalizer...
8947801 Multi-track asymmetric read-back signal correction  
Various aspects of the present disclosure are directed toward an apparatus, such as a disc drive, including a disc having multiple tracks, a magneto-resistive transducer assembly, and...
8947811 Disk drive using preamble and postamble to adjust asynchronous signal samples of payload  
A disk drive is disclosed comprising a head actuated over a disk, wherein data is written to the disk comprising a first periodic pattern, a payload, and a second periodic pattern. The data is...
8947821 Detecting a servo pattern using a data channel in a magnetic tape drive  
According to one embodiment, a system for processing data includes an equalizer configured to use servo coefficients for processing servo data and data coefficients for processing non-servo data,...
8929017 Systems and methods for SNR measurement using equalized data  
Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing system is discussed that includes: an equalizer circuit, a signal to...
8922933 Systems and methods for loop processing with variance adaptation  
Systems and methods for data processing, and more particularly systems and methods for loop processing with variance adaptation.
8922923 Interleaved automatic gain control for asymmetric data signals  
A data signal comprising an even component and an odd component with differing amplitudes is received at a main automatic gain controller (AGC). The even component is adjusted by a first...
8922934 Systems and methods for transition based equalization  
Systems, methods, devices, circuits for transition based equalization.
8917470 Data sequence detection in band-limited channels using cooperative sequence equalization  
A method for detecting a data sequence includes generating a sample stream, which is a time-sequenced digital signal associated with samples of an analog signal. The sample stream is input to n...
8917465 Implementing spin torque oscillator power-on oscillation checker using ramped STO bias differentiator in microwave-assisted magnetic recording (MAMR) hard disk drives  
A method, apparatus, and system are provided for implementing a power-on spin-torque oscillator (STO) oscillation checker to monitor STO resistance to identify STO oscillation with microwave...
8913339 Systems and methods for adaptive gain control  
Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing system is discussed that includes: an analog to digital converter...
8902524 Inter-track interference mitigation in magnetic recording systems using averaged values  
Hardware-based methods and apparatus are provided for inter-track interference mitigation in magnetic recording systems using averaged values. Inter-track interference (ITI) is mitigated in a...
8896956 Method and system for reading closely-spaced data tracks  
A method for reading a track of data may include positioning a read head at an initial position relative to the track of data and obtaining initial track signals, filtering the initial track...
8885281 Electrical device having a reducing harddisk vibration function and reducing harddisk vibration method  
The present application discloses a method to reduce hard-disk vibrations. The method to reduce hard-disk vibrations is for an electrical device having a hard-disk and a speaker, and the method to...
8884795 Reception device and reception method  
A reception device and corresponding method for maintaining a high dynamic range of an AD converter circuit and preventing excessive input to the AD converter circuit is disclosed. For example, a...
8873187 Systems and methods for data processor marginalization based upon bit error rate  
Systems, methods, devices, circuits for data processing, and more particularly to data processing including operational marginalization capability, and/or operational improvement capability.
8873176 Non-linear transition shift identification and compensation  
A system for identifying and compensating for non-linear transition shift in a magnetic medium data storage device is disclosed. The non-linear transition shift compensation system includes a...
8861113 Noise predictive filter adaptation for inter-track interference cancellation  
Systems, methods, devices, circuits for data processing, and more particularly to systems and methods for adapting noise predictive filters for inter-track interference cancellation in a data...
8854762 Systems and methods for X-sample based data processor marginalization  
Systems, methods, devices, circuits for data processing, and more particularly to data processing including operational marginalization capability.
8854750 Saturation-based loop control assistance  
The present inventions are related to systems and methods for data processing, and more particularly to data processing using distortion-correction loops with saturation-based assistance.
8854763 Systems and methods for managed operational marginalization  
Systems, methods, devices, circuits for data processing, and more particularly to data processing including operational marginalization capability.
8848308 Systems and methods for ADC sample based inter-track interference compensation  
Various embodiments of the present invention provide systems and methods for mitigating inter-track interference using pre-equalized data samples.
8837072 Methodology for equalizing systemic latencies in television reception in connection with games of skill played in connection with live television programming  
A method of and system for handling latency issues encountered in producing real-time entertainment such as games of skill synchronized with live or taped televised events is described herein....
8837064 Systems and methods for quality based bit error rate prediction  
The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for bit error rate prediction in a data processing system.
8837068 Two dimensional magnetic recording servo system adaptive combination  
A servo system includes multiple interpolators operable to interpolate equalized data for multiple signal paths in a two dimensional magnetic recording system to yield interpolated signals at...
8824087 Zero gain start bias estimation  
A method and system for estimating a zero gain start (ZGS) bias in a read channel is disclosed. The method may include: receiving preamble samples within a fixed-length window selected for ZGS...
8817408 Methodology for equalizing systemic latencies in television reception in connection with games of skill played in connection with live television programming  
A method of and system for handling latency issues encountered in producing real-time entertainment such as games of skill synchronized with live or taped televised events is described herein....
8810950 Data sequence detection in band-limited channels using two stream detector architecture  
A method for data sequence detection includes generating a first sample stream, equalizing the first sample stream to generate a first equalized sample stream, and buffering the first equalized...
8810949 Equalization combining outputs of multiple component filters  
An apparatus comprises read channel circuitry and associated signal processing circuitry. The signal processing circuitry comprises: an equalizer configured to combine an output of two or more...
8810948 Over-sampled signal equalizer  
An apparatus comprises read channel circuitry and signal processing circuitry associated with the read channel circuitry. The signal processing circuitry is configured to: equalize an oversampled...
8810937 Compensating asymmetries of signals using piece-wise linear approximation  
A system including a first circuit, a second circuit, an amplifier, and a summer. The first circuit is configured to (i) select a first portion of a signal, and (ii) generate a first compensation...
8804259 Systems and methods for revising data in a signal read from a storage medium according to a calculated gain  
A system including an analog front end module, an equalizer module, a detector module, and a gain module. The analog front end module is configured to sample a signal read from a storage medium,...
8804268 DC-control for post processor  
Systems and techniques relating to interpreting signals on a noisy channel. A direct current (DC) correction can be applied to an input of a post processor outside of a main read path that...
8797670 Adaptive soft-output detector for magnetic tape read channels  
In accordance with one embodiment, a data storage system includes a tape channel for reading precoded data from a magnetic tape medium to produce a signal, a soft detector adapted for calculating...
8797666 Adaptive maximum a posteriori (MAP) detector in read channel  
An adaptive detector, such as a maximum a posteriori (MAP) detector for a read channel, is disclosed. In one or more embodiments, a data processing apparatus, such as a read channel digital front...
8797665 Systems and methods for channel quality determination  
Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing system is disclosed that includes: a data detector circuit, a filter...
8780482 Methodology for equalizing systemic latencies in television reception in connection with games of skill played in connection with live television programming  
A method of and system for handling latency issues encountered in producing real-time entertainment such as games of skill synchronized with live or taped televised events is described herein....
8773786 System for correcting DC characteristics of a magnetic recording system  
According to an aspect of the present disclosure, a system for correcting for DC characteristics of a magnetic recording system includes: circuitry implementing at least a portion of a write...
8773793 Disk drive selecting target response based on identified response  
A disk drive is disclosed comprising a head actuated over a disk. A test pattern is written to the disk and read from the disk to generate a read signal. The read signal is sampled to generate...
8773808 Magnetic disk device and head-position control method  
A magnetic disk device includes a magnetic disk on which servo information is recorded, a head to read the servo information of the magnetic disk, and a position control module. When carrying out...
8773792 Systems and methods for inter-track interference cancellation in magnetic recording channels  
A system including an analog front end module to receive a first signal generated by reading data from a storage medium storing the data in concentric tracks, sample the first signal, and output a...
8767333 Systems and methods for pattern dependent target adaptation  
Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is disclosed that includes a noise predictive filter circuit,...