Korobkov
Alexander Korobkov, Santa Clara, CA US
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20100217569 | METHOD AND SYSTEM FOR EVALUATING A DEVICE DURING CIRCUIT SIMULATION - A method for evaluating a device during circuit simulation includes receiving a first request including a first input value; and mapping the first input value to a first space in a table. The table is configured to store one or more table entries. A table entry includes an input value and a stored value. The stored value is obtained as a function of the input value from an analytical device model used to characterize the device during circuit simulation. The method includes determining whether the first space in the table is occupied by a first table entry; selecting a second table entry and a third table entry from the table when the first space in the table is not occupied by the first table entry, wherein the second table entry and the third table entry are neighbors in relation to the first space in the table; determining whether an accuracy criteria for performing a linear interpolation is satisfied as a function of the first input value, a stored value for the second table entry, and a stored value for the third table entry; and obtaining a first response value by performing the linear interpolation of the stored value for the second table entry and the stored value for the third table entry when the accuracy criteria is satisfied; and sending a response to the first request including the first response value. The first response value corresponds with the performance of the device when the device is configured using the first input value. | 08-26-2010 |
Alexander Korobkov, San Jose, CA US
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20100217577 | PARALLEL POWER GRID ANALYSIS - A method for a power grid configured to supply current to a plurality of elements of a circuit. The method includes representing the power grid as a graph including a plurality of nodes and a plurality of edges, wherein each node of a portion of the plurality of nodes corresponds to an element of the plurality of elements each modeled as a current source, determining a characteristic matrix A of the power grid, wherein transient behavior of the power grid is represented by a set of linear equations of A*v=i, wherein v is a nodal voltage vector representing nodal voltages of at least a portion of the plurality of nodes and i is a current source vector representing currents supplied to at least a portion of the plurality of elements, identifying first and second partitions of the power grid based on a predetermined criterion, identifying first and second current source subvectors of the current source vector according to the first and second partitions of the power grid, identifying a first shell of the first partition based on worst case nodal voltage sensitivity analysis with respect to the first current source subvector, identifying a second shell of the second partition based on worst case nodal voltage sensitivity analysis with respect to the second current source subvector, and generating an analysis result of transient behavior of the power grid by analyzing, concurrently and independently, the first and second shells of the first and second partitions of the power grid, respectively. | 08-26-2010 |
20130305201 | INTEGRATED CIRCUIT SIMULATION USING FUNDAMENTAL AND DERIVATIVE CIRCUIT RUNS - A system that simulates an integrated circuit is formed of a plurality of devices. The system initially performs a fundamental circuit simulation run using original parameters for the plurality of devices and an initial time step. The system generates one or more fundamental time steps from the fundamental circuit simulation run. The fundamental time steps are generated when changes that indicate state time derivatives during two or more successive integration steps are within a predetermined range. The system stores the one or more fundamental time steps as fundamental circuit events in an events queue, and updates the parameters for the plurality of devices based on the fundamental circuit events to generate one or more derivative circuits. The system then performs one or more derivative circuit simulation runs using the derivative circuits. | 11-14-2013 |
Alexander I. Korobkov, Santa Clara, CA US
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20090319250 | SYSTEM, METHOD AND APPARATUS FOR SENSITIVITY BASED FAST POWER GRID SIMULATION WITH VARIABLE TIME STEP - A system and method of analyzing a power grid in an integrated circuit includes inputting a circuit design to a test bench, inputting a plurality of initial values for the circuit design in to the test bench, setting a current time t to 0 value for an initial time (t | 12-24-2009 |
Dimitri Korobkov, Frankfurt DE
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20090316766 | METHOD OF DETERMINING A CHANNEL QUALITY AND MODEM - Data transmission is disclosed over a transmission channel that is subject to narrowband interferers. An increased overall bit or data transmission rate is achieved by an exemplary method of determining a channel capacity of plural sub-channels of the transmission channel based on a net background noise power estimation. The net background noise power contains only white noise-like contributions and excludes, to a reasonable extent, noise contributions or signal power from narrowband interferers. Hence, the net background noise power can be reduced. For example, an Orthogonal Frequency Division Multiplex (OFDM) signal code construction or bit allocation scheme can be chosen that provides for optimized data transmission at a data rate that approximates or approaches the more realistic channel capacity of an individual sub-channel, resulting in an increased overall bit or data transmission rate. | 12-24-2009 |
Dmitri Korobkov, Frankfurt DE
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20100054314 | INITIALIZATION OF AND MODEM FOR AN OFDM DATA TRANSMISSION - A method and modem are provided for obtaining an optimized efficiency of an Orthogonal Frequency Division Multiplex (OFDM) data transmission, such as for power line communication, for example. The length or duration of a guard interval or cyclic prefix in an OFDM symbol is newly selected at each start-up of a modem while initializing or preparing the OFDM data transmission. The length of the guard interval can be given by the number of samples in a time-discrete representation, and the value of such number of samples that is retained for the subsequent data transmission can be selected from a plurality of pre-determined possibilities based on an evaluation of a channel quality of a communication channel including a physical line to which the modem is connected. Hence, the selected value depends on actual transmission conditions, and the optimization potential offered by a more flexible handling of system parameters is exploited to meet changing conditions on the physical line. | 03-04-2010 |
Dmitry Korobkov, Moscow RU
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20130159101 | METHODS FOR AND APPARATUS FOR AUTOMATED SALES REFERRALS LOCAL TO A PURCHASER - The present invention provides methods and apparatus for associating Emotional Motivators with a Product. The Emotional Motivators associated with the Products are correlated with Emotional Motivators associated with a Purchaser. Advice regarding a Purchase may be provided based upon the correlated Emotional Motivators. | 06-20-2013 |
20130246174 | METHODS FOR AND APPARATUS FOR ASSOCIATING EMOTIONAL MOTIVATORS WITH PRODUCTS - The present invention provides methods and apparatus for associating Emotional Motivators with a Product. The Emotional Motivators associated with the Products are correlated with Emotional Motivators associated with a Purchaser. Advice regarding a Purchase may be provided based upon the correlated Emotional Motivators. | 09-19-2013 |
20140074651 | METHODS FOR AND APPARATUS FOR ASSOCIATING EMOTIONAL MOTIVATORS WITH PRODUCTS - The present invention provides methods and apparatus for associating Emotional Motivators with a Product. The Emotional Motivators associated with the Products are correlated with Emotional Motivators associated with a Purchaser. Advice regarding a Purchase may be provided based upon the correlated Emotional Motivators. | 03-13-2014 |
Dmitry Korobkov, London GB
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20150154684 | METHODS AND APPARATUS FOR PROVIDING AUTOMATED EMOTIONAL MOTIVATOR BASED SERVICE - The present invention provides methods and apparatus for assisting a Purchaser in making a decision related to a Purchase. The decision may include which Product or Service will most satisfy a Purchaser in the event that the Purchaser acquires the Product or Service. The assistance is based upon emotional motivators associated with the Purchaser. | 06-04-2015 |
Dmitry Alexandrovich Korobkov, Moscow RU
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20130019659 | METHOD FOR DETERMINING WETTABILITY OF POROUS MATERIALS - Method for determining wettability of porous materials comprises placing a sample of a porous material into a cell of a calorimeter and contacting the sample with a wetting fluid. A heat flow into the cell is continuously measured. Based on results of the measurement and taking into account a thermal effect of the fluid compression, a first wetting contact angle of pores filled with the wetting fluid is calculated. Then, a pressure in the cell containing the sample is increased starting from an initial value until pores of the sample are completely filled with the fluid. Then, the pressure is reduced to the initial value while continuously measuring of a heat flow into the cell. The method enables calculation of a second wetting contact angle for pores completely filled with the fluid and of a third wetting contact angle for pores free from the fluid. | 01-24-2013 |
20140067281 | DETERMINATION OF LOCAL CHANGES OF CONCENTRATION OF ADMIXTURES IN FLUID FLOW - The invention allows determining a local change of an admixture concentration in a fluid flow at an entrance to a measurement cell. The change of the admixture concentration in time inside the measurement cell is first determined for a fluid containing the admixture, the change of concentration of which in time at the entrance to the measurement cell is known. Then, an impulse response of the cell is found applying the deconvolution method. The change of the admixture concentration inside the measurement cell is then determined for a fluid being studied with an unknown concentration of the admixture at the entrance. The unknown concentration is determined using the impulse response of the measurement cell and the change of the admixture concentration inside the cell. | 03-06-2014 |
20140100795 | METHOD FOR DETERMINING QUANTITATIVE COMPOSITION OF A MULTI-COMPONENT MEDIUM - Methods for determining a quantitative composition of a multi-component medium comprising at least two known immiscible components comprises determining temperature dependencies of specific heat capacity of each of the components. A sample of the multi-component medium is weighed. Specific heat capacity of the sample is determined at least at i−1 temperature levels, where i is the number of components of the multi-component medium. On the basis of the results from determination of specific heat capacity of the components and the temperature dependencies of specific heat capacity of the components, weight coefficients are calculated for each component of the medium. Quantitative content of each of the components of the multi-component medium is determined on the basis of the obtained values of the weight coefficients of the components. | 04-10-2014 |
20150107339 | METHOD FOR DETERMINING THE PROPERTIES OF POROUS MATERIALS - A sample of porous material is placed in a calorimeter cell and a pressure in the cell is increased starting from a pressure value of a first step by filling the cell with a wetting fluid. Measurements are taken of a heat flow to the cell and a fluid volume at each step. Then, the pressure in the cell is decreased to the pressure value of a first step with continued measurements of the heat flow to the cell. Increase and following decrease of the fluid pressure in the cell are repeated at least once. Then a temperature in the cell is decreased below a wetting fluid crystallization point. Once the fluid has been fully crystallized in sample pores, the temperature in the cell is increased above a wetting fluid melting point. Wetting limiting angle of the pores filled with fluid, and pore sizes are determined based on the results of heat flow measurements with due consideration of heat effect of fluid compression. | 04-23-2015 |