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94results about How to "Efficiently derived" patented technology

Efficient management of cryptographic key generations

The invention generally relates to management of cryptographic key generations in an information environment comprising a key-producing side generating and distributing key information to a key-consuming side. A basic concept of the invention is to define, by means of a predetermined one-way key derivation function, a relationship between generations of keys such that earlier generations of keys efficiently may be derived from later ones but not the other way around. A basic idea according to the invention is therefore to replace, at key update, key information of an older key generation by the key information of the new key generation on the key-consuming side. Whenever necessary, the key-consuming side iteratively applies the predetermined one-way key derivation function to derive key information of at least one older key generation from the key information of the new key generation. In this way, storage requirements on the key-consuming side can be significantly reduced.
Owner:EMC CORP +1

Statistical reservoir model based on detected flow events

Computerized method and system for deriving a statistical reservoir model of associations between injecting wells and producing wells. Potential injector events are interactively identified from time series measurement data of flow rates at the wells, with confirmation that some response to those injector events appears at producing wells. Gradient analysis is applied to cumulative production time series of the producing wells, to identify points in time at which the gradient of cumulative production changes by more than a threshold value. The identified potential producer events are spread in time and again thresholded. An automated association program rank orders injector-producer associations according to strength of the association. A capacitance-resistivity reservoir model is evaluated, using the flow rate measurement data, for the highest-ranked injector-producer associations. Additional associations are added to subsequent iterations of the reservoir model, until improvement in the uncertainty in the evaluated model parameters is not statistically significant.
Owner:BP CORP NORTH AMERICA INC +1

Apparatus and method for adding information to a machine translation dictionary

Given a source text, a desired translation of the source text into a target language, and a machine-readable dictionary, a first set of morphemes in the target language is generated from the source text, typically by using the dictionary to perform a machine translation of the source text. The second text is analyzed into a second set of morphemes in the target language. Differences between the first and second sets of morphemes are found, and morphemes corresponding to the differences are taken from the source text. Existing information including these source-text morphemes is extracted from the dictionary, and new information to be added to the dictionary is automatically generated from the extracted information and the differences. This process generates comparatively short dictionary entries, corresponding only to the differences between the two set of morphemes, and therefore creates useful dictionary entries while saving dictionary space.
Owner:OKI ELECTRIC IND CO LTD

Qr code processing method and apparatus thereof

A QR code processing method includes an edge processing process, a QR code positioning process and a projection modification process. The edge processing process converts an original image into a binarized input image. The QR code positioning process includes a group search process and a tag search process. The group search process includes: deriving a plurality of luminance groups according to luminance values of pixels within an input image; identifying a plurality of finder pattern groups complying with QR code finder pattern among the plurality of luminance groups according to a central point of each luminance group; and deriving position information of each finder pattern group. The tag search process derives position information of the QR code according to the position information of the finder pattern groups. The projection modification process converts the input image into a modified image according to the position information of the QR code.
Owner:PRIMAX ELECTRONICS LTD

Method and device for chroma sample intra prediction in video coding system

ActiveUS20180241995A1Improve intra-prediction performancePrediction efficiency can be improvedDigital video signal modificationVideo encodingParallel computing
An intra prediction method according to the present invention comprises the steps of: acquiring information on a luma prediction mode of a current block and information on a chroma prediction mode of the current block from a bit stream; deriving a luma intra prediction mode of the current block on the basis of the information on the luma prediction mode; determining a chroma intra prediction mode of the current block on the basis of information on the luma intra prediction mode and the information on the chroma prediction mode; and generating a chroma prediction sample of the current block on the basis of the chroma intra prediction mode. According to the present invention, it is possible to reflect the difference between the ratio of the width to the height of a luma component and the ratio of the width to the height of a chroma component, and thus to more accurately perform intra prediction in units of samples and improve intra prediction performance.
Owner:LG ELECTRONICS INC

Inter prediction method and apparatus in image coding system

An inter prediction method performed by a decoding apparatus according to the present invention comprises the steps of: receiving information associated with an MVD through a bit stream; deriving a candidate motion information list on the basis of a neighboring block of a current block; deriving an MVP of the current block on the basis of the candidate motion information list; deriving a motion vector of the current block on the basis of the MVP and the MVD; and generating a prediction sample with respect to the current block on the basis of the motion vector. According to the present invention, a motion vector may be derived on the basis of a candidate motion information list derived on the basis of a neighboring block. Therefore, the amount of data of prediction mode information can be reduced and inter prediction accuracy and overall coding efficiency can be improved.
Owner:LG ELECTRONICS INC

Method and apparatus for washing and drying semi-conductor devices

A cleaning apparatus which comprises a spray cleaning arrangement capable of even cleaning of devices. The cleaning arrangement is disposed within a housing, and is directed towards a conveyor belt, which transports the device to be cleaned across the various wash, rinse and drying zones of the apparatus. At least one spray wand is provided for the circulation of a wash fluid having at least one row of holes disposed longitudinally thereacross for releasing the wash fluid onto the device to be washed. The spray wand has a decreasing internal traverse cross-sectional area from one end to the second end such that a substantially uniform internal pressure is maintained between the two ends during washing. The holes on the spray wands are preferably microtunnels which can be disposed at high density along the spray wand. The spray wand can also be rotated such that the direction of spray may be adjusted. The various wash, rinse and drying zones are ideally designed as modules with their own conveyor belts, such that contamination due to fluid carry-over is minimized. A top guiding system is also provided directional control to the moving devices.
Owner:ULTRA CLEAN TECH ASIA

Wireless communication apparatus and method, and signal attenuation prediction apparatus and method

InactiveUS20070171996A1Transmit power efficientlyLess calculation loadPower managementEnergy efficient ICTUltrasound attenuationPower consumption
A wireless communication apparatus that transmits a transmission signal and receives a reception signal via a wireless transmission line, the wireless communication apparatus including prediction means for predicting the amount of signal attenuation along the wireless transmission line, a first conversion table that converts the level of the transmission signal into a first power consumption calculation parameter for each modulation method for the transmission signal, a second conversion table that converts C / N of the transmission signal into a second power consumption calculation parameter for each modulation method for the transmission signal, calculation means for calculating the modulation method and the level of the transmission signal that provide minimum power consumption based on the amount of signal attenuation predicted by the prediction means, the first conversion table and the second conversion table, and control means for controlling the modulation method and the level of the transmission signal based on the calculation result calculated by the calculation means.
Owner:SONY CORP

Illumination compensation-based inter-prediction method and apparatus in image coding system

An inter-prediction method according to the present invention comprises the steps of: deriving a movement vector of the current block; deriving a reference block for the current block on the basis of the movement vector; deriving an IC parameter on the basis of first neighboring reference samples of the reference block and second neighboring reference samples of the current block, the IC parameter comprising a scaling factor a, and an offset b; and deriving prediction samples for the current block by carrying out IC for the reference samples of the reference block on the basis of the scaling factor and offset. According to the present invention, inter-prediction efficiency can be effectively increased while reducing the amount of additional data.
Owner:LG ELECTRONICS INC

Query derived communication mechanism for communication between relational databases and object-based computing environments and systems

Techniques for providing communication mechanisms between object-based and relational database systems are disclosed. A communication mechanism (e.g., a Web service) can be effectively derived from one or more query statements (e.g., SQL statements) based on a mapping to the objects of the object-based system. The communication mechanism can be generated in a Top-Down or Contract-First approach based on definitions and / or metadata needed to effectively construct the communication mechanism.
Owner:TERADATA

QR code processing method and apparatus thereof

A QR code processing method includes an edge processing process, a QR code positioning process and a projection modification process. The edge processing process converts an original image into a binarized input image. The QR code positioning process includes a group search process and a tag search process. The group search process includes: deriving a plurality of luminance groups according to luminance values of pixels within an input image; identifying a plurality of finder pattern groups complying with QR code finder pattern among the plurality of luminance groups according to a central point of each luminance group; and deriving position information of each finder pattern group. The tag search process derives position information of the QR code according to the position information of the finder pattern groups. The projection modification process converts the input image into a modified image according to the position information of the QR code.
Owner:PRIMAX ELECTRONICS LTD

Scalable video signal encoding/decoding method and apparatus

A scalable video signal decoding method according to the present invention decodes a corresponding picture of a reference layer corresponding to a current picture of a current layer, generates an inter-layer reference picture by up-sampling the decoded corresponding picture, generates a reference picture list including a temporal reference picture and an inter-layer reference picture, and inter-predicting the current picture on the basis of the generated reference picture list.
Owner:KT CORP

Inter-prediction-based image or video coding using sbtmvp

According to the disclosure of the present document, in a subblock-based temporal motion vector prediction (sbTMVP), a position of a subblock for deriving a motion vector per subblock unit can be efficiently calculated, and thus video / image coding efficiency can be increased and hardware implementation can be simplified.
Owner:LG ELECTRONICS INC

Apparatus, system, and method for a synchronous multiple output power supply

Efficient multiple power outputs are provided by receiving a primary voltage as an input to a bridge module and providing one or more secondary voltages as outputs of the bridge module. The secondary voltages are generated on the secondary side of one or more respective secondary windings of a transformer. The bridge module includes at least one primary complementary pair of switches on the primary winding side of the transformer and a secondary complementary pair of switches on the secondary side of each secondary winding of the transformer. The secondary output voltages are received from the bridge module by one or more output voltage regulation modules. Each output voltage regulation module receives one of the secondary voltages from the bridge module as an input and provides at least one regulated output voltage as an output.
Owner:IBM CORP

Signal processor, window provider, encoded media signal, method for processing a signal and method for providing a window

A signal processor for providing a processed version of an input signal in dependence on the input signal has a windower configured to window a portion of the input signal, or of a pre-processed version thereof, in dependence on a signal processing window described by signal processing window values for a plurality of window value index values, in order to obtain the processed version of the input signal. The signal processor also has a window provider for providing the signal processing window values for a plurality of window value index values in dependence on one or more window shape parameters.
Owner:FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV

Optical waveguide device

An optical waveguide device having a Mach-Zehnder type waveguide formed on a substrate is provided in which a slope of two waveguides input to an optical coupler on an output side of the Mach-Zehnder type waveguide is 0 degrees, a waveguide of the optical coupler after being coupled by the optical coupler is a multi-mode waveguide, and the waveguide which is output from the optical coupler is a three-branched waveguide including an output main waveguide and two output sub waveguides interposing the output main waveguide therebetween.
Owner:SUMITOMO OSAKA CEMENT CO LTD

Method and apparatus for processing video signal

A video signal processing method according to the present invention is characterised by constructing a palette map for a current block that is encoded in a palette mode; inducing a palette index for each sample of the current block in a pre-determined scan order; and restoring the respective samples of the current bock based on the palette map and the palette index.
Owner:KT CORP

Method and device for deriving block structure in video coding system

A video decoding method performed by a decoding device, according to the present invention, comprises the steps of: deriving at least one reference block for an object block; deriving a partitioned structure of the object block on the basis of a partitioned structure of the at least one reference block; partitioning the object block into a plurality of sub blocks on the basis of the derived partitioned structure; and generating recovered samples by decoding the plurality of sub blocks. According to the present invention, a partitioned structure of a current picture can be derived on the basis of a reference block of a neighboring picture, and thus the amount of data used in the additional information signaled for partitioning of the current picture can be reduced and overall coding efficiency can be improved.
Owner:ROSEDALE DYNAMICS LLC

Method and apparatus for processing video signals

A video signal processing method according to the present invention is characterized by constructing a palette map related to a current block encoded in a palette mode, determining, based on a mode identifies of a current sample included in the current block, a palette index mode of the current sample, deriving a palette index of the current sample based on the palette index mode, reconstructing the current sample by using a palette map of the current block and the palette index.
Owner:KT CORP

Method and device for processing multi-view video signal

A multiview video signal processing method according to the present invention determines an intra prediction mode of a current depth block, determines a partition pattern of the current depth block according to the determined intra prediction mode, induces a predicted depth value of the current depth block on the basis of the determined partition pattern, and restores the current depth block by using the predicted depth value and an offset value (DcOffset) for the current depth block.
Owner:KT CORP

Method and device for processing video signal

A video signal processing method according to the present invention is characterized by constructing a palette map relating to a current block encoded in a palette mode, deriving a number of palette indices encoded according to an index mode (INDEX MODE), determining palette index relating to the current block based on the derived number of palette indices, and reconstructing the current block based on the palette map and the palette index.
Owner:KT CORP

Video signal processing method and device

A method for processing a vide signal, according to the present invention comprises generating a reference picture list based on a current picture reference flag for a current picture, obtaining motion information about a current block in the current picture, restoring the current block using the motion information of the current block and the reference picture list relating to the current picture, and applying a deblocking filter to the stored current block.
Owner:KT CORP

Optical amplitude modulation system capable of cancelling high order component

It is an object of the present invention to provide a DSB-SC system capable of suppressing a third order component. The DSB-SC modulation having high extinction ratio can be realized by adjusting the first order component, which is generated by applying a modulation signal (3fm), and the third order component, which is generated by applying a basic signal (fm), to have reversed phase and the same intensity level, and then by applying the first order component to the third order component, these two components cancel each other.
Owner:NAT INST OF INFORMATION & COMM TECH
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