Patents Assigned to LSI
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Publication number: 20130146397Abstract: In one embodiment, an elevator controlling method includes calculating the positional value of an elevator driving motor the every first cycle; generating a control signal every third cycle to control the motor based on the calculated positional value and the rotational speed of the motor calculated every second cycle; and controlling the driving power source of the motor based on the generated control signal.Type: ApplicationFiled: November 21, 2012Publication date: June 13, 2013Applicant: LSIS CO., LTDInventor: LSIS CO., LTD
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Publication number: 20130152034Abstract: A system for, and method of, reducing IC timing derating for a path in an integrated circuit design. In one embodiment, the system includes an electronic design automation tool configured to (1) extract circuit data regarding cells in the path and (2) calculate a timing derating for the path based at least in part on a determination as to whether the cells are simple cells.Type: ApplicationFiled: December 9, 2011Publication date: June 13, 2013Applicant: LSI CorporationInventor: Alexander Tetelbaum
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Publication number: 20130149857Abstract: A method of forming an electronic device provides an electronic device substrate having a solder bump pad located thereover. A nickel-containing layer is located over the solder bump pad. A copper-containing layer is formed on the nickel-containing layer prior to subjecting the electronic device to a reflow process.Type: ApplicationFiled: January 29, 2013Publication date: June 13, 2013Applicant: LSI CORPORATIONInventor: LSI Corporation
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Publication number: 20130152036Abstract: Disclosed is a technique for providing minimal sequential overhead in a flip-flop circuit. Equalization of setup times is achieved in one embodiment. In addition, delays in clock to Q can be equalized for both rising data transitions and falling data transitions. Large setup times are not required since optimization techniques equalize setup times for both rising and falling data transitions.Type: ApplicationFiled: February 7, 2013Publication date: June 13, 2013Applicant: LSI CORPORATIONInventor: LSI Corporation
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Patent number: 8462485Abstract: A switchgear for a ground distribution line includes a base frame, vacuum switch units each installed on the base frame and configured by laying a first vacuum interrupter and a second vacuum interrupter within an epoxy resin mold, the first vacuum interrupter opening or closing a main circuit between a power source side and a load side and the second vacuum interrupter opening or closing a ground circuit, a main circuit interface protruding from one side of each vacuum switch unit, and a phase connector interface protruding from the other side of each vacuum switch unit in the same direction as the main circuit interface.Type: GrantFiled: May 27, 2011Date of Patent: June 11, 2013Assignee: LSIS Co., Ltd.Inventor: Jae Gul Lee
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Patent number: 8464129Abstract: Certain embodiments of the present invention are methods for the organization of trapping-set profiles in ROM and for the searching of those profiles during (LDPC) list decoding. Profiles are ranked by dominance, i.e., by their impact on the error-floor characteristics of a decoder. More-dominant trapping-set profiles contain information about both unsatisfied check nodes (USCs) and mis-satisfied check nodes (MSCs), while less-dominant trapping-set profiles contain information about only USCs. Trapping-set profile information is organized into a number of linked, hierarchical data tables which allow for the rapid location and retrieval of most-dominant matching trapping-set profiles using a pointer-chase search.Type: GrantFiled: December 12, 2008Date of Patent: June 11, 2013Assignee: LSI CorporationInventor: Kiran Gunnam
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Patent number: 8461950Abstract: An electromagnetic switching device including: a housing; fixed contacts disposed in the housing; a movable contact which is brought into contact with the fixed contacts and separated from the fixed contacts; and a driving unit disposed at one side of the housing and driving the movable contact, wherein the fixed contacts are disposed to be perpendicular to a direction in which the movable contact moves. Thus, noise generation can be suppressed and external size can be reduced.Type: GrantFiled: October 12, 2011Date of Patent: June 11, 2013Assignee: LSIS Co., Ltd.Inventor: Soo Hyun Lim
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Patent number: 8464202Abstract: A parameterizable design system is for use with semiconductor analog circuits and includes an interface unit connected to provide access to the system, a database unit connected to supply a library of parameterizable analog building blocks for a design entity, and a parameterization unit connected to select a parameter for one of the library of parameterizable analog building blocks to meet a design specification of the design entity. Additionally, the parameterizable design system may also include a simulation unit connected to simulate an operation of the design entity employing the parameter, and an analyzer unit connected to analyze a sensitivity of the parameter for the design entity based on the design specification. A method of designing a semiconductor analog circuit is also included.Type: GrantFiled: May 24, 2011Date of Patent: June 11, 2013Assignee: LSI CorporationInventors: Shawn Boshart, Shahriar Moinian, Joshua Williams, Hong-Ha Vuong
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Patent number: 8462549Abstract: Methods and apparatus are provided for read-side intercell interference mitigation in flash memories. A flash memory device is read by obtaining a read value for at least one target cell; obtaining a value representing a voltage stored in at least one aggressor cell that was programmed after the target cell; determining intercell interference for the target cell from the at least one aggressor cell; and obtaining a new read value that compensates for the intercell interference by removing the determined intercell interference from the read value for the at least one target cell. The new read value can optionally be provided to a decoder. In an iterative implementation, one or more intercell interference mitigation parameters can be adjusted if a decoding error occurs.Type: GrantFiled: June 30, 2009Date of Patent: June 11, 2013Assignee: LSI CorporationInventors: Erich F. Haratsch, Milos Ivkovic, Victor Krachkovsky, Nenad Miladinovic, Andrei Vityaev, Johnson Yen
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Patent number: 8462819Abstract: An adaptive clock recovery (ACR) subsystem processes an input phase signal indicative of jittery packet arrival times to generate a relatively smooth and bounded output phase signal that can be used to generate a relatively stable recovered clock signal. The input phase signal is also processed to detect and measure step-delays corresponding, for example, to path changes in the network routing of the packets. Step-delay pre-compensation is performed, in which the input phase signal is phase-adjusted, upstream of the ACR subsystem, based on the sign and magnitude of each detected step-delay. As a result, the ACR subsystem is substantially oblivious to the existence of such step-delays.Type: GrantFiled: March 23, 2010Date of Patent: June 11, 2013Assignee: LSI CorporationInventor: P. Stephan Bedrosian
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Patent number: 8461791Abstract: An inverter for an electric vehicle includes a speed instruction generating unit, a frequency voltage converting unit, an integrator and a 2-to-3 phase converter. The speed instruction generating unit outputs a speed instruction for changing the rotational frequency of an electric motor based on the on/off of a signal outputted from the accelerator pedal. The frequency voltage converting unit outputs a voltage instruction based on the frequency of the speed instruction. The integrator outputs a rotational angle by performing integration on the frequency of the speed instruction. The 2-to-3 phase converter receives the voltage instruction and the rotational angle and converts the received voltage instruction and rotational angle into three-phase voltage instructions.Type: GrantFiled: June 15, 2011Date of Patent: June 11, 2013Assignee: LSIS Co., Ltd.Inventor: Chan Ook Hong
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Patent number: 8464034Abstract: Methods and systems for provision of boot parameters may comprise: receiving one or more boot parameter event notification registration requests; registering one or more boot parameter event receiver clients; and providing one or more boot parameters to one or more registered boot parameter event receiver clients.Type: GrantFiled: April 29, 2009Date of Patent: June 11, 2013Assignee: LSI CorporationInventors: James A. Lynn, Andrew J. Spry, Scott Masterson
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Patent number: 8464142Abstract: In one embodiment, an LDPC decoder has a controller and an extrinsic log-likelihood (LLR) value generator. The extrinsic LLR value generator is selectively configurable to operate in either (i) a non-averaging mode that updates extrinsic LLR values without averaging or (ii) an averaging mode that updates extrinsic LLR values using averaging. Initially, the extrinsic LLR value generator is configured to generate non-averaged extrinsic LLR values, and the decoder attempts to recover an LDPC-encoded codeword using the non-averaged extrinsic LLR values. If the decoder is unable to recover the correct codeword, then (i) the controller selects the averaging mode, (ii) the extrinsic LLR value generator is configured to generate average extrinsic LLR values, and (iii) the decoder attempts to recover the correct codeword using the average extrinsic LLR values. Averaging the extrinsic LLR values may slow down the propagation of erroneous messages that lead the decoder to convergence on trapping sets.Type: GrantFiled: April 23, 2010Date of Patent: June 11, 2013Assignee: LSI CorporationInventors: Kiran Gunnam, Shaohua Yang, Changyou Xu
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Patent number: 8463992Abstract: A system and method for handling IO to drives in a RAID system is described. In one embodiment, the method includes providing a multiple disk system with a predefined strip size. IO request with a logical block address is received for execution on the multiple disk system. A plurality of sub-IO requests with a sub-strip size is generated, where the sub-strip size is smaller than the strip size. The generated sub-IO commands are executed on the multiple disk system. In one embodiment, a cache line size substantially equal to the sub-strip size is assigned to process the IO request.Type: GrantFiled: December 18, 2010Date of Patent: June 11, 2013Assignee: LSI CorporationInventors: Allen Kelton, Michael Richmond
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Patent number: 8464128Abstract: In one embodiment, an LDPC decoder attempts to recover an originally-encoded LDPC codeword based on a set of channel soft-output values. If the decoder observes a trapping set, then the decoder compares the observed trapping set to known trapping sets stored in a trapping-set database to determine whether or not the observed trapping set is a known trapping set. If the observed trapping set is not known, then the decoder selects a most-dominant trapping set from the trapping-set database and identifies the locations of erroneous bit nodes in the selected trapping set. Then, the decoder adjusts the channel soft-output values corresponding to the identified erroneous bit nodes. Adjustment is performed by inverting some or all of the hard-decision bits of the corresponding channel soft-output values and setting the confidence value of each corresponding channel soft-output value to maximum. Decoding is then restarted using the adjusted channel soft-output values.Type: GrantFiled: August 12, 2009Date of Patent: June 11, 2013Assignee: LSI CorporationInventor: Kiran Gunnam
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Patent number: 8464198Abstract: An electronic design automation (EDA) tool and a method of employing unsensitized critical path information to reduce leakage power in a circuit. In one embodiment, the EDA tool includes: (1) an unsensitizable path identifier configured to receive information regarding designed devices in a circuit and information regarding identified critical paths therein, analyze a logical behavior of the circuit and identify critical and noncritical gates in unsensitizable ones of the critical paths thereof and (2) a transistor designator coupled to the unsensitizable path identifier and configured to designate relatively low threshold voltage transistors for use in the critical gates and designate relatively high threshold voltage transistors for use in the noncritical gates.Type: GrantFiled: July 30, 2008Date of Patent: June 11, 2013Assignee: LSI CorporationInventor: Sreejit Chakravarty
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Patent number: 8461922Abstract: Techniques are disclosed for canceling an offset component (e.g., dc component or dc offset) in an amplifier circuit. For example, an apparatus comprises an amplifier circuit with an amplifier element and a feedback resistor network coupled between an output of the amplifier element and an input of the amplifier element. The apparatus also comprises a current source coupled to the feedback resistor network, the current source generating a current signal that generates a voltage in a first portion of the feedback resistor network that cancels an offset component present in an input signal received by the amplifier circuit. A second portion of the feedback resistor network may be adjustable so that a gain applied to the input signal is adjustable while the offset component is canceled from the input signal. One or more resistors in the feedback resistor network may be composed of the same or substantially similar material as one or more resistors associated with the current source.Type: GrantFiled: February 24, 2011Date of Patent: June 11, 2013Assignee: LSI CorporationInventor: Robert Alan Norman
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Patent number: 8464257Abstract: A method and controller device for supplying battery power to a virtualized storage environment having a storage controller with a virtual machine manager and a second virtual machine. In response to a battery engaged event, the first virtual machine manager enables the image of the second virtual machine to be shared with a new instance of the second virtual machine so that the image does not have to be loaded therein. The first virtual machine manager then creates the new virtual machine. The old virtual machine shuts down non-necessary hardware devices and sets necessary hardware devices to low power mode. During this time, the new virtual machine executes a backup specific start-of-day (SOD) initialization sequence. The method also synchronizes the new and old virtual machines. The method also initiates a cache memory backup operation upon synchronization of the new and old virtual machines and then shuts down the old virtual machine.Type: GrantFiled: December 22, 2010Date of Patent: June 11, 2013Assignee: LSI CorporationInventors: Arindam Banerjee, Satish Sangapu
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Patent number: 8462562Abstract: A memory device comprises a memory block, a power gating transistor, and control circuitry. The memory block includes at least one memory cell comprising a storage element electrically connected to a source potential line, a drive strength of the storage element being a function of a voltage level on the source potential line. The power gating transistor, in turn, is connected between the source potential line and a voltage source. The control circuitry is operative to configure the power gating transistor to electrically connect the source potential line to the voltage source while the memory block is in a first mode, and to clamp the source potential line at a voltage different from that of the voltage source when the memory block is in a second mode.Type: GrantFiled: November 18, 2011Date of Patent: June 11, 2013Assignee: LSI CorporationInventors: Ankur Goel, Donald Albert Evans, Dennis Edward Dudeck, Richard John Stephani, Ronald James Wozniak, Dharmendra Kumar Rai, Rasoju Veerabadra Chary, Jeffrey Charles Herbert
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Patent number: 8461893Abstract: Described embodiments provide a delay cell for a complementary metal oxide semiconductor integrated circuit. The delay cell includes a delay stage to provide an output signal having a programmable delay through the delay cell. The delay cell has a selectable delay value from a plurality of delay values, where the cell size and terminal layout of the delay cell are relatively uniform for the plurality of delay values. The delay stage includes M parallel-coupled inverter stages. Each parallel-coupled inverter stage includes N pairs of stacked PMOS transistors and stacked NMOS transistors. The N transistor pairs have configurable source-drain node connections between a drain node and a source node of each transistor in the pair, wherein the selectable delay value corresponds to a configuration of the configurable source-drain node connections to adjust a delay value of each of the M inverter stages.Type: GrantFiled: August 16, 2011Date of Patent: June 11, 2013Assignee: LSI CorporationInventors: Martin J. Gasper, Gerard M. Blair, Bruce E. Zahn