Patents Assigned to LSI
  • Publication number: 20150082121
    Abstract: An apparatus includes a non-volatile memory and a controller. The controller may be configured to track one or more channel parameters of the non-volatile memory. The controller may be further configured to estimate an erase state voltage distribution of the non-volatile memory by selecting one or more parameters of the erase state distribution from a look-up table based upon at least one of the one or more channel parameters.
    Type: Application
    Filed: September 30, 2013
    Publication date: March 19, 2015
    Applicant: LSI Corporation
    Inventors: Yunxiang Wu, Zhengang Chen, Yu Cai, Erich F. Haratsch
  • Publication number: 20150078103
    Abstract: A sense amplifier includes a latch, first and second switching circuitry, and control circuitry. The first switching circuitry selectively couples a voltage supply node and/or a voltage return node of the latch to a voltage supply and/or a voltage return of the sense amplifier, respectively, as a function of a first control signal. The second switching circuitry couples a first sensing node in the sense amplifier with a first bit line of a first sub-bank in one of multiple memory banks in a memory device as a function of a second control signal, and couples a second sensing node with a second bit line of a second sub-bank as a function of the second control signal. The control circuitry imparts an imbalance between the first and second sensing nodes which varies as a function of a third control signal.
    Type: Application
    Filed: March 31, 2014
    Publication date: March 19, 2015
    Applicant: LSI Corporation
    Inventor: Rajiv K. Roy
  • Publication number: 20150078049
    Abstract: The disclosure relates to an electric power conversion apparatus, and capable of determining a minimum output voltage of a boost converter based on a voltage of the grid, and comparing the minimum output voltage of the converter with an input voltage of the converter, and controlling the operation of the converter based on the comparison result, thereby reducing the unnecessary operation and switching loss of the converter, the electric power conversion apparatus according to the invention comprises a converter; and a control unit configured to detect a grid voltage to determine a minimum output voltage of the converter based on the grid voltage, and control the operation of the converter based on an input voltage of the converter and the determined minimum output voltage.
    Type: Application
    Filed: September 15, 2014
    Publication date: March 19, 2015
    Applicants: SNU R&DB FOUNDATION, LSIS CO., LTD.
    Inventors: Anno YOO, Jung Ik HA, Ho Joon SHIN, Kwon Yub HYUNG
  • Publication number: 20150082115
    Abstract: Systems and method relating generally to data processing, and more particularly to systems and methods for fragmenting a data set and recovering the fragmented data set.
    Type: Application
    Filed: October 7, 2013
    Publication date: March 19, 2015
    Applicant: LSI Corporation
    Inventors: Haitao Xia, Lu Lu, Shu Li, Xuebin Wu
  • Patent number: 8982992
    Abstract: Block-based crest factor reduction (CFR) techniques are provided. An exemplary block-based crest factor reduction method comprises obtaining a block of data samples comprised of a plurality of samples; applying the block of data to a crest factor reduction block; and providing a processed block of data from the crest factor reduction block. The block-based crest factor reduction method can optionally be iteratively performed a plurality of times for the block of data. The block of data samples can comprise an expanded block having at least one cursor block. For example, at least two pre-cursor blocks and one post-cursor block can be employed. The peaks can be cancelled, for example, only in the block of data samples and in a first of the pre-cursor blocks.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: March 17, 2015
    Assignee: LSI Corporation
    Inventors: Kameran Azadet, Albert Molina, Joseph H. Othmer, Meng-Lin Yu, Ramon Sanchez Perez
  • Patent number: 8981730
    Abstract: Provided are a switching device for an electric vehicle and a method of controlling the switching device. The switching device includes a switch, a signal selection part, an inverter, and a controller. The switch generates a first or second switching signal according to an operation mode. The signal selection part receives the first or second switching signal, and selects the first or second switching signal according to the operation mode to output the selected switching signal. The inverter performs a direct current/alternating current conversion process on power according to the switching signal output from the signal selection part, and outputs the power. The controller determines the operation mode, and generates a control signal according to the operation mode such that the signal selection part selects the first or second switching signal.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: March 17, 2015
    Assignee: LSIS Co., Ltd.
    Inventors: Chun Suk Yang, Byung Woon Jang
  • Patent number: 8982968
    Abstract: An apparatus for converting terminal polarity for RS communication includes a comparator configured to discriminate polarities of a first signal line and a second signal line by comparing voltage levels indicated on the first and second signal lines of a cable for RS-485 communication, a switch unit configured to connect a TRXD+ terminal to the first signal line and connect a TRXD? terminal to the second signal line, or to connect a TRXD+ terminal to the second signal line or connect a TRXD? terminal to the first signal line in response to a provided switch control signal, and a switch controller configured to transmit the switch control signal to the switch unit in response to a polarity discrimination result by the comparator relative to the first signal line and the second signal line.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: March 17, 2015
    Assignee: LSIS Co., Ltd.
    Inventor: Hyung Lae Kim
  • Patent number: 8982941
    Abstract: Described embodiments provide a non-uniformly quantized analog-to-digital converter (ADC) for generating a value for each sample of a received signal. The ADC includes arrays of decision comparators provided the received signal. Each comparator has a threshold voltage set according to a corresponding bit history of a predictive decision feedback equalizer (DFE), and each bit history is associated with a tap of the DFE. Each comparator provides a bit value based on the corresponding bit history. The predictive DFE includes a set of interleave groups, each interleave group having j interleaves. Each interleave determines a bit value of a corresponding sample in a window of samples. Each tap corresponds to a feedback path between adjacent interleave groups. Multiplexing logic of each interleave predictively selects a bit value of an associated tap based on a value of a corresponding select line in a previous interleave, thereby alleviating a unit interval timing constraint.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: March 17, 2015
    Assignee: LSI Corporation
    Inventor: Erik V. Chmelar
  • Patent number: 8984234
    Abstract: A method and system for managing a cache for a host machine is disclosed. The method includes: indicating each cache line in the cache as being in a transitional meta-state when any virtual machine hosted on the host machine moves out of the host machine; each time a particular cache line is accessed, indicating that particular cache line as no longer in the transitional meta-state; and marking the cache lines still in the transitional meta-state as invalid when a virtual machine moves back to the host machine.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: March 17, 2015
    Assignee: LSI Corporation
    Inventors: Parag R. Maharana, Luca Bert, Earl Cohen
  • Patent number: 8983467
    Abstract: A method and apparatus are provided for access point selection in wireless communication systems, such as wireless LANs. A disclosed wireless communication device includes a roaming process that selects an access point based on a measure of correlation on a channel to one or more surrounding access points. The roaming process selects an access point, for example, having the lowest correlation value. The roaming process may also consider the signal quality, channel delay spread or both in selecting an access point.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: March 17, 2015
    Assignee: LSI Corporation
    Inventors: Pieter-Paul Severin Giesberts, Tim Schenk
  • Patent number: 8984222
    Abstract: Methods and structure for task management in storage controllers of a clustered storage system. An initiator storage controller of the clustered storage system ships I/O requests for processing to a target storage controller of the system. Responsive to a need to abort a previously shipped I/O request, the initiator storage controller transmits a task management message to the target storage controller. The task management message identifies one or more previously shipped I/O requests to be aborted. The target storage controller processes the received task management message in due course of processing requests and completes processing for the aborted previously shipped request in an orderly manner. Resources associated with the aborted previously shipped requests are release within both controllers.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: March 17, 2015
    Assignee: LSI Corporation
    Inventors: Rakesh Chandra, James A. Rizzo, Vinu Velayudhan, Senthil M. Thangaraj, Sumant K. Patro
  • Patent number: 8981864
    Abstract: Multi-layer in integrated transmission line circuits are provided having improved signal loss characteristics. A multi-layer integrated transmission line circuit, such as a stripline circuit or a microstrip circuit, comprises at least one reference layer; at least one conducting layer having one or more conducting strips, wherein the at least one conducting layer is separated from the at least one reference layer by a substrate; and at least one additional layer positioned between the at least one conducting layer and the at least one reference layer. The multi-layer integrated transmission line circuit may also comprise a dielectric insulating material, such as an organic material or a ceramic material. The additional layers increase a dielectric thickness of the multi-layer integrated transmission line circuit to reduce dielectric losses.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: March 17, 2015
    Assignee: LSI Corporation
    Inventors: Daniel L. Gerlach, Ashley Rebelo
  • Patent number: 8984180
    Abstract: A relay and a data processing method are provided. The relay includes: a detection unit for classifying and detecting event oriented monitoring data and non-event oriented monitoring data from monitoring data; a storage unit for storing the detected monitoring data; a communication unit for receiving a request signal of the monitoring data from a monitoring device and transmitting corresponding monitoring data in response to a transmission request signal of the monitoring data; and a control unit for extracting event oriented monitoring data from the monitoring data and performing a control to transmit the monitoring data requested from the monitoring device.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: March 17, 2015
    Assignee: LSIS Co., Ltd.
    Inventor: Byung Joon Jeon
  • Patent number: 8981701
    Abstract: Provided is an apparatus for compensating offset of a current sensor detecting a motor current supplied by an inverter for PWM (Pulse Width Modulation) control of a motor, the apparatus including a current controller providing a PWM signal generated based on the motor current detected by the current sensor to the inverter, calculating an offset using the motor current detected by the current sensor in response to presence and absence of the PWM control of the motor, or offset-compensating the motor current detected by the current sensor.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: March 17, 2015
    Assignee: LSIS Co., Ltd.
    Inventor: Gi Young Choi
  • Publication number: 20150074355
    Abstract: An apparatus includes a memory and a controller. The memory may be configured to implement a cache and store meta-data. The cache generally comprises one or more cache windows. Each of the one or more cache windows comprises a plurality of cache-lines configured to store information. Each of the plurality of cache-lines is associated with meta-data indicating one or more of a dirty state, an invalid state, and a partially dirty state. The controller is connected to the memory and may be configured to (i) detect an input/output (I/O) operation directed to a file system recovery log area, (ii) mark a corresponding I/O using a predefined hint value, and (iii) pass the corresponding I/O along with the predefined hint value to a caching layer.
    Type: Application
    Filed: October 30, 2013
    Publication date: March 12, 2015
    Applicant: LSI Corporation
    Inventors: Kishore Kaniyar Sampathkumar, Saugata Das Purkayastha
  • Publication number: 20150074328
    Abstract: Described embodiments provide a solid-state drive (SSD) including a media controller and a solid-state media. A control processor of the media controller determines a logical address, a transfer size, and map data based on the logical address and transfer size, associated with a read request received from a host device. Based on the logical address and a sequential zone defined based on one or more previous read requests, the control processor determines whether the received read request is a sequential read. A map data pre-fetch size is adjusted based on the transfer size of the received read request and whether the received read request is a sequential read. A corresponding portion of the map data is transferred from the solid-state media to a map cache coupled to the control processor, the transferred portion having a size equal to the adjusted map data pre-fetch size.
    Type: Application
    Filed: December 3, 2013
    Publication date: March 12, 2015
    Applicant: LSI Corporation
    Inventors: Leonid Baryudin, Zhiqing Zhang, Xin Song, Yun Shun Tan, Lin Feng Chen
  • Publication number: 20150069936
    Abstract: An inverter-charger integrated device for an electric vehicle is provided. The inverter-charger integrated device for the electric vehicle includes a motor; a power input unit; a rectifying unit; an inverter; and a control unit, wherein the inverter comprises a first group of switches including first and second switches, a second group of switches including third and fourth switches, and a third group of switches including fifth and sixth switches, the rectifying unit is directly connected to the first of the first to third groups of switches, and phases of the motor are respectively connected to the first to third group of switches.
    Type: Application
    Filed: September 5, 2014
    Publication date: March 12, 2015
    Applicant: LSIS CO., LTD.
    Inventors: Jae Hoon JANG, Byung Woon JANG, Joong Ki JUNG, Chun Suk YANG
  • Publication number: 20150069859
    Abstract: A photovoltaic inverter includes: an input unit to connected to a first terminal and a second terminal to which a positive (+) polarity or a negative (?) polarity of a photovoltaic module are connected; a switching device configured to control the first terminal and the second terminal connected to the input unit according to pre-set polarities of an inverter unit; a booster unit configured to boost a voltage of the photovoltaic module delivered form the input unit through the switching device; a capacitor configured to charge the voltage boosted by the booster unit; and an inverter unit configured to convert the voltage charged in the capacitor into an alternating current (AC) and provide the converted AC voltage for an electric power system.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 12, 2015
    Applicant: LSIS CO., LTD.
    Inventor: Dong Jin YUN
  • Publication number: 20150069834
    Abstract: An operating method of an inverter-charger integration device for an electric vehicle is disclosed. In the operating method, whether a charge switch and a controller area network (CAN) communication module are used is confirmed. When both the charge switch and the CAN communication module are in use, an operation mode of an inverter is determined by using a first table. When only the charge switch is in use, the operation mode of the inverter is determined by using a second table. When only the CAN communication module is in use, the operation mode of the inverter is determined by using a third table. When both the charge switch and the CAN communication module are not in use, the operation mode of the inverter is determined by using a fourth table.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 12, 2015
    Applicant: LSIS CO., LTD.
    Inventors: Jae Hoon JANG, Byung Woon JANG, Joong Ki JUNG
  • Patent number: D724545
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: March 17, 2015
    Assignee: LSIS Co., Ltd.
    Inventor: Young Sung Shin