Abstract: Various embodiments of the present inventions provide systems and methods for data processing with out of order transfer. For example, a data processing system is disclosed that includes a data processor operable to process input blocks of data and to yield corresponding processed output blocks of data, wherein the processed output blocks of data are output from the data processor in an order in which their processing is completed, and a scheduler operable to receive processing priority requests for the input blocks of data and to assign processing resources in the data processor according to the priority requests.

Abstract: The present disclosure is directed to a method for managing a memory. The method includes the step of receiving data, the data including a plurality of sectors. The method also includes the step of dividing each sector of the plurality of sectors into a plurality of data units. A further step of the method involves interleaving the plurality of data units to yield a plurality of interleaved data units. The method also includes the step of writing the plurality of interleaved data units to a disk. An additional step of the method is to de-spread the plurality of interleaved data units to yield at least one sector of the plurality of sectors.

Abstract: The present invention is related to systems and methods for adaptive parameter modification in a data processing system. As one example, a system is disclosed that includes a filter calibration circuit that is operable to calculate an updated coefficient for a filter circuit using a data set pair including a converged output and a corresponding data set.

Abstract: The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for performing data decoding.

Abstract: Aspects of the disclosure pertain to a system and method for providing component detector switching for a diversity loop detector. Switching between component detectors is performed via one of: a periodic state likelihood reset process, a slope-based switching process, or a cross-over connection process. The joint decision circuit switches among component detectors to promote improved performance with present of constant or transition phase offset.

Abstract: Systems, methods, devices, circuits for data processing, and more particularly to data processing including operational marginalization capability.

Abstract: A method for producing a LDPC encoded test pattern for media in a LDPC based drive system includes adding error detection code data to a predominantly zero bit test pattern and adding additional zero bits to produce a test pattern of a desirable length. The test pattern may then be scrambled to produce a desirable flaw detection test pattern. The flaw detection test pattern may then be encoding with an LDPC code, or other error correction code with minimal disturbance to the run length constraints of the data pattern, and written to a storage medium.

Abstract: The present inventions are related to apparatuses and methods for detecting and classifying media defects. For example, an apparatus for classifying a media defect is disclosed including a DFT circuit operable to yield real and imaginary components of a signal derived from data read from a storage medium, a calculation circuit operable to calculate an amplitude and a phase of the signal based on the real and imaginary components, and a classifier operable to detect the media defect based on the amplitude and to classify the media defect based on the phase.

Abstract: The present invention is related to systems and methods for harmonizing testing and using a storage media.

Abstract: A system (130) improves network management. The system (130) associates an event in the network with a network device and provides a geographical map (710). The geographical map (710) displays locations of network devices and indicates which network devices are associated with at least one event.

Abstract: A method, apparatus, and system are provided for implementing spin-torque oscillator (STO) sensing with a demodulator for hard disk drives. The demodulator measures an instantaneous phase of the readback signal from a STO sensor and converts the readback signal into a signal that is proportional to the magnetic field affecting the STO frequency during a bit time. The converted signal is used for processing by conventional data detection electronics.

Abstract: Methods and systems for measuring variations in head-disk clearance in a hard disk drive. User generated data is randomly selected at a controller of the hard disk drive wherein the user generated data is stored on a disk associated with the hard disk drive. A reference point associated with the user generated data is stored on a storage medium associated with the hard disk drive. The user generated data is read at the controller. The user generated data is analyzed with the reference point using more than two frequencies, at the controller, to obtain a variation in measurement of the head-disk clearance.

Abstract: Various approaches, methods, systems, circuits and devices for channel bit density estimation.

Abstract: The present invention is related to systems and methods for adaptive parameter modification in a data processing system.

Abstract: The present inventions are related to apparatuses and methods for detecting and classifying media defects. For example, an apparatus for classifying a media defect is disclosed including a DFT circuit operable to yield real and imaginary components of a signal derived from data read from a storage medium, a calculation circuit operable to calculate an amplitude and a phase of the signal based on the real and imaginary components, and a classifier operable to detect the media defect based on the amplitude and to classify the media defect based on the phase.

Abstract: Various embodiments of the present inventions are related to apparatuses and methods for data processing systems with retained sector reprocessing. For example, a data processing system is disclosed that includes a data processor operable to process blocks of data and to yield corresponding processed output blocks of data, and to retain the blocks of data for reprocessing when requested, and a scheduler operable to receive reprocessing requests for the retained blocks of data and to initiate a reprocessing operation in the data processor for the retained blocks of data.

Abstract: A method, apparatus, and system are provided for implementing spin-torque oscillator sensing with an enhanced integrated demodulator for hard disk drives. The demodulator receives an input signal from a STO read sensor having an oscillation frequency ? related to the strength of the detected magnetic signal field. The demodulator includes a pair of mixers coupled to a quadrature reference oscillator with respective quadrature components cos(?0t), and sin(?0t) of the quadrature reference oscillator being mixed with a received input signal to form signals at the sum and difference frequencies, ?±?0. Each of these mixer products is lowpass filtered by a respective a lowpass filter to remove the sum frequency components for providing a demodulator output signal that is directly proportional the STO oscillation frequency ?. The demodulator output signal is used for processing by data detection electronics.

Abstract: Various embodiments of the present invention provide systems and methods for a multi-tier data processing system. For example, a data processing system is disclosed that includes an input operable to receive data to be processed, a first data processor operable to process at least some of the data, a second data processor operable to process a portion of the data not processed by the first data processor, wherein the first data processor has a higher throughput than the second data processor, and an output operable to yield processed data from the first data processor and the second data processor.

Abstract: Various embodiments of the present inventions provide systems and methods for data processing with out of order transfer. For example, a data processing system is disclosed that includes a data processor operable to process input blocks of data and to yield corresponding processed output blocks of data, wherein the processed output blocks of data are output from the data processor in an order in which their processing is completed, and a scheduler operable to receive processing priority requests for the input blocks of data and to assign processing resources in the data processor according to the priority requests.

Abstract: A method, apparatus, and system for implementing spin-torque oscillator (STO) sensing with an enhanced delay control feedback circuit for hard disk drives. A detector receives an input signal from a STO read sensor having an oscillation frequency related to the strength of the detected magnetic signal field. The received input signal is mixed with a time delayed input signal for providing a detector output signal. A low frequency component signal of the detector output signal is monitored and a delay control feedback is applied to an adjustable time delay to bias the DC signal of the detector output signal.