Abstract: A multi-mode data card includes at least two mode modules, and also includes an external interface module and an interface control module. The external interface module connects to the interface control module. The external interface is configured to connect with computer for data interaction; the interface control module is equipped with at least two channels, and said at least two channels connects to said at least two mode modules respectively. The interface control module is configured to: when the multi-mode data card is calibrated, connect the external interface module with the channel corresponding to the mode module to be calibrated, and switch the multi-mode data card to the mode to be calibrated. A method for calibrating multi-mode data card is also provided in the present invention.

Abstract: Methods and apparatus are provided for detecting a sync mark in a storage system, such as a hard disk drive. A sync mark is detected in a storage system by obtaining one or more branch metrics from a data detector in the storage system; generating one or more sync mark metrics using the one or more branch metrics from the data detector; and identifying the sync mark based on the sync mark metrics. An input data set is optionally compared with a plurality of portions of a sync mark pattern to yield corresponding comparison values and the comparison values can be summed to obtain at least one result. A sync mark found signal is asserted based upon the at least one result.

Abstract: An apparatus comprises read channel circuitry and signal processing circuitry associated with the read channel circuitry. The signal processing circuitry is configured to determine a first set of soft outputs, hard decisions and reliability indicators for a read channel data signal, to determine a second set of soft outputs, hard decisions and reliability indicators based at least in part on the first set of soft outputs, hard decisions and reliability indicators, and to perform an iterative decoding process to decode the read channel data signal based at least in part on the second set of soft outputs, hard decisions and reliability indicators. The first set of soft outputs, hard decisions and reliability indicators are used to determine a reduced-state trellis for determining the second set of soft outputs, hard decisions and reliability indicators.

Abstract: Embodiments are related to systems and methods for data processing, and more particularly to systems and methods for calibration during data processing.

Abstract: A method and system for eliminating/suppressing long transition runs over a communications channel is disclosed. The method may include providing modulation coding based on a multi-level finite state machine (ML-FSM) having a periodic structure, the periodic structure being defined by a predetermined number of time frames. The ML-FSM may include a plurality of penalty-free edges for connecting nodes in one time frame to nodes at the same level in a subsequent time frame and a plurality of penalty edges for connecting nodes in one time frame to nodes at an upper level in the subsequent time frame. The method may further include utilizing the ML-FSM based modulation coding to facilitate data transmission over the communications channel.

Abstract: The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for data set quality determination.

Abstract: The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for data set quality determination.

Abstract: A method and system for eliminating/suppressing long transition runs over a communications channel is disclosed. The method may include providing modulation coding based on a multi-level finite state machine (ML-FSM) having a periodic structure, the periodic structure being defined by a predetermined number of time frames. The ML-FSM may include a plurality of penalty-free edges for connecting nodes in one time frame to nodes at the same level in a subsequent time frame and a plurality of penalty edges for connecting nodes in one time frame to nodes at an upper level in the subsequent time frame. The method may further include utilizing the ML-FSM based modulation coding to facilitate data transmission over the communications channel.

Abstract: The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for data processing systems with symbol selective scaling interacting with parity forcing.

Abstract: Techniques are disclosed for performing branch metric computations/noise predictive calibration/adaptation for over-sampled Y samples. In one or more embodiments, the techniques employ a data processing apparatus (circuit) that includes a parallel to serial convertor configured to receive a first stream of sample data (e.g., Y samples) and a second stream of sample data (e.g., Z samples). The parallel to serial convertor is operable to combine the first stream of sample data and the second stream of sample data into a combined stream of sample data (e.g., combined Y and Z samples). The data processing apparatus (circuit) further includes a filter (e.g., a noise predictive finite impulse response (NPFIR) filter, a noise whitening filter, such as a noise predictive calibration/adaptation module (NPCAL) filter, and so forth) that is configured to receive the combined stream of sample data and whiten noise in the combined stream of sample data.

Abstract: The present invention is related to systems and methods for enhancing data detection in a data processing system.

Abstract: The present invention is related to systems and methods for data processing system characterization.

Abstract: Various embodiments of the present invention provide systems and methods for media defect detection.

Abstract: The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for coasting one or more calibration loops based upon identification of a probability of data inaccuracies.

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

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

Abstract: Various embodiments of the present invention provide systems and methods for handling out of order reporting in a storage device.

Abstract: A multi-mode data card includes at least two mode modules, and also includes an external interface module and an interface control module. The external interface module connects to the interface control module. The external interface is configured to connect with computer for data interaction; the interface control module is equipped with at least two channels, and said at least two channels connects to said at least two mode modules respectively. The interface control module is configured to: when the multi-mode data card is calibrated, connect the external interface module with the channel corresponding to the mode module to be calibrated, and switch the multi-mode data card to the mode to be calibrated. A method for calibrating multi-mode data card is also provided in the present invention.