101results about How to "Solve the excessive calculation" patented technology

A streaming media system employs dynamic rate adaptation. The method includes a file format compatible with legacy HTTP infrastructure to deliver media over a persistent connection. The method further includes the ability for legacy client media players to dynamically change the encoded delivery rate of the media over a persistent connection. The method provided works transparently with standard HTTP servers, requiring no modification and leverages standard media players embedded in mobile devices for seamless media delivery over wireless networks with high bandwidth fluctuations. A system is also specified for implementing a client and server in accordance with the method.

Method and system for the planning and/or evaluation of radio networks, especially CDMA radio networks. The service area of a radio network is divided into pixels after which for each pixel a probability is determined whether it is covered by a cell of the radio network. To account for cell breathing due to traffic changes, the planning involves the calculation of a link budget for each pixel and of a noise rise for each cell.

Apparatuses, computer program product, and method for digital image processing. A digital image processing apparatus includes an input interface to obtain a first digital image and a second digital image, and a processing unit coupled with the input interface. The processing unit defines at least one block in the first digital image, defines for each block a search area in the second digital image, the search area being larger than the block, maps the block and its search area to an equal size, calculates pixelwise errors between each block and its search area that are mapped to an equal size, collects the errors into a motion register, and defines a motion between the first digital image and the second digital image by utilizing the motion register.

Provided are an apparatus and a method for displaying a three-dimensional (3D) object. The apparatus may include a display panel to display a 3D object having plural faces, an object generating unit to rotate the displayed 3D object in a rotation direction of the apparatus to display a second face of the 3D object toward the user if at least one of a first operation and a second operation occurs, the first operation being that the apparatus is rotated while a user is touching a first face of the plural faces of the 3D object and the second operation being that the face of the user is rotated while the user is touching the first face of the plural faces of the 3D object, and a control unit to perform a function mapped to the other face displayed toward the user.

A method for an access system for a vehicle includes the steps of recording a first optical information in a specific area surrounding the vehicle and detecting an object approaching the vehicle as a function of the recorded first optical information. As a function of detecting the approaching object, a second optical information in the surrounding area is recorded, and gesture information of the object is identified as a function of the second optical information. A locking device or door opening device of the access system is triggered as a function of gesture information.

According to one aspect, a mixed-signal tuner for analog and digital TV reception incorporates a demodulator for analog TV, employing various features for resolving limitations of the analog circuitry and for achieving compatibility with various global TV standards. Such features, which may be present in one or more embodiments, include the use of a variable sample rate in all digital clocks for frequency planning, and use of a microcontroller (MCU) to control various circuitry of the tuner.

An object detection method and a neural network system for object detection are disclosed. The object detection method acquires a current frame of a sequence of frames representing an image sequence, and extracts a feature map of the current frame. The extracted feature map is pooled with information of a pooled feature map of a previous frame to thereby obtain a pooled feature map of the current frame. An object is detected from the pooled feature map of the current frame. A dynamic vision sensor (DVS) may be utilized to provide the sequence of frames. Improved object detection accuracy may be realized, particularly when object movement speed is slow.

The invention discloses a real-time streaming media cluster transcoding system, belonging to the technical field of video information process, and comprising a user control module, a task management module, a system scheduling module, a data acquisition module, a data pushing module, a plurality of audio/video transcoding modules and an internal data transmission module, wherein, the task management module comprises a user interaction submodule, a task monitoring submodule, a task forcasting submodule and a self-study optimization submodule, wherein the system scheduling module comprises a node distribution submoduel, a data distribution submodule and a dynamic regulation submodule; the data pushing submodule comprises a data splicing submodule, an audio/video multiplexing submodule and a data output submodule; the audio/video transcoding module comprises a transcoder management submodule, an audio/video coding submodule, an audio/video decoding submodule and an audio/video data processing submodule. The real-time streaming media cluster transcoding system outputs audio/video data in different forms according to different demands, thereby realizing real-time processing and transcoding the high-definition and standard-definition streaming media data.

In a method and a pulse sequence optimization device to determine a pulse sequence for a magnetic resonance system, a determination of a time interval in a pulse sequence that is to be optimized with regard to a gradient curve initially takes place, the pulse sequence including a number of radio-frequency pulses and a number of gradient pulses that are to be chronologically coordinated, under determination of the following boundary conditions for the gradient curve: length of the time interval, target integral of the gradient curve over the time interval, start value of the gradient curve at the beginning of the time interval, end value of the gradient curve at the end of the time interval. A gradient curve is then defined according to a function that is linear per segment by addition of a first linear function that connects the start value and the end value and a second function that is linear per segment that assumes a function value of “zero” at the beginning and end of the time interval, and that is defined so that the sum of the integral of the first linear function and of the integral of the second function corresponds to the target integral.

According to one aspect, a mixed-signal tuner for analog and digital TV reception incorporates a demodulator for analog TV, employing various features for resolving limitations of the analog circuitry and for achieving compatibility with various global TV standards. Such features, which may be present in one or more embodiments, include the use of a variable sample rate in all digital clocks for frequency planning, and use of a microcontroller (MCU) to control various circuitry of the tuner.

Bit error rate or bit error probability of a received signal of a wireless telecommunication system is estimated, wherein a channel impulse response is estimated from the received signal, and the received signal is subjected to a channel equalizing operation performed on the basis of time statistics derived from the channel impulse response. Additionally, adaptive reference time domain characteristics are calculated from a weighting information obtained from the channel impulse response estimation that may be used to perform a reference channel equalizing operation for obtaining an additional output signal to be compared with the output signal of the channel equalizing operation so as to determine an estimation of the bit error rate based on the detected difference.

A method of channel estimation of a mobile communication system based on a time division pilot field is disclosed. The method uses a transmitting end that transmits a time division pilot sequence having a cyclic prefix and a receiving end that transforms the time division pilot sequence into frequency domain using a fast Fourier transform module. Channel estimation is performed to obtain a channel frequency response estimation result. The receiving end transforms the channel frequency response estimation result back into time domain and obtains a channel impulse response estimation result.

The invention provides an FSS antenna cover modeling method suitable for a high-order moment method, and aims to solve the technical problem of excessively large calculation amount of the high-order moment method due to excessive facets of a model in an existing modeling method. The method is implemented by the steps of obtaining design parameters of a cover body of an antenna cover; obtaining design parameters of an FSS structure passive resonance unit; according to the requirements of the high-order moment method, building a sector-ring-shaped FSS structure calculation model; and building anFSS antenna cover model. The division is performed according to the structure of the passive resonance unit and the periodic copying is performed; and non-quadrilateral facets generated by cutting the passive resonance unit are classified and divided, so that the problem of the excessively large calculation amount of the high-order moment method due to the excessive facets of the model after FSSmodeling and cutting processing in the prior art is solved and the functions of reducing the calculation amount of the high-order moment method and saving the calculation resources are realized.

The invention provides a power system economic dispatching method containing multiple wind power plants. The power system economic dispatching method comprises the following steps: S1) according to wind power prediction data and prediction error distribution characteristics in a dispatching period, obtaining a possible capacity scene of each wind power plant, and calculating a scene probability; S2) reducing the scenes of all wind power plants according to the same method, and calculating the scene probability after reduction is carried out; S3) combining all the scenes of which the wind power plants are reduced, and reducing the scenes into a plurality of typical scenes; S4) establishing a target function of the power system economic dispatching method; S5) establishing constraint conditions including load balance constraints, rotary backup contain constraints, the top and bottom limitation constraints of unit capacity, unit ramp rate constraints and minimum startup-shutdown constraints; S6) carrying out solving via a mixed integer programming method. The power system economic dispatching method provided by the invention is suitable for solving the economic dispatching problem containing multiple wind power plants, and calculation difficulty generated when the scenes of the multiple wind power plants are reduced is lowered.

A client terminal can control a printer even when the network connection to a web server is interrupted, and can convert character codes using a simple configuration. The client terminal having a standard web browser and connected to a web server and a printer has a web page acquisition unit that uses the web browser to acquire a web page with an embedded printer control script from the web server; a web page display unit that displays the acquired web page and run the printer control script; a character code conversion unit that uses the printer control script to convert script character codes to printer character codes, which is a character code for the device; and a command transmission unit that sends a command containing the converted printer character codes to the printer.

A method and an apparatus for controlling a TX power amplifier are provided. The method is for generating a power control curve in an inter-slot region between two continuous or adjacent time slots, which respectively have different modulation types. The method and apparatus produces a concave inter-slot ramp control curve for reducing the power of the TX power amplifier in the inter-slot region, where the power for signal transmission is transformed from a first power value K1 to a second power value K2. The method and apparatus further estimates a transient period of the concave inter-slot ramp control curve, during which modulation switching of the TX power amplifier may occur.

A display unit includes: a display section including a plurality of pixels, each of the pixels including a plurality of light-emitting devices; an operation section that performs calculations for correcting drive signals to be inputted into the light-emitting devices of the pixels included in the display section in order to correct luminances and chromaticities of the pixels; and a coefficient data input section where a bit number of an element having smaller variations in coefficient in the display section, among elements of each of coefficient matrixes necessary for the correction calculations, the coefficient matrixes to be inputted into the operation section, is set to a value smaller than a bit number of an element having larger variations.

A method for determining at least one gas parameter, of a flowing gas, by means of a flow meter, comprising a measurement section having a heating element and at least three temperature sensors, over which the gas is fed, at least one first temperature sensor being arranged upstream of the heating element, at least one second temperature sensor being arranged in the region of the heating element, and at least one third temperature sensor being arranged downstream of the heating element, wherein a calculation unit determines the at least one gas parameter as a function of the temperature measurement values at the first, second and third temperature sensors, and/or at least two separate gas parameters as a function of the temperature measurement values of individual different temperature sensors and/or the combinations of temperature measurement values of different temperature sensors.

The invention provides a laser radar three-dimensional target rapid detection method based on a pseudo-image technology. The method comprises the steps that S1, removing ground points in original point cloud data; S2, converting three-dimensional point cloud data into a two-dimensional pseudo image data form with three-dimensional feature information; S3, setting a two-dimensional convolutional neural network fusion feature layer, and capturing feature maps of a pseudo image under three different scales; S4, realizing position regression and category identification of a target by utilizing anSSD detection positioning network based on the feature maps of the pseudo-image under different scales; S5, setting a total loss function of a detection network; and S6, performing network training toobtain a standard three-dimensional target detection network for performing three-dimensional target detection based on laser radar acquisition point cloud data. According to the method, a large amount of calculation is reduced, and the position, size, shape and other information of a detected target are accurately obtained while the detection process speed is ensured.

A method of recovering texture information for an error block in a video stream includes applying an edge detection spatial filter on blocks surrounding an error block to detect texture edges, each block containing a plurality of pixels, and identifying first pixels surrounding the error block having texture data above a predetermined threshold value, selecting first pixels and checking the texture data of pixels extending from the selected first pixel in a plurality of predetermined directions for determining a direction of the texture edge, accumulating the edge detection filtering results of pixels that are located on the texture edge in a selected direction, determining the filtering weights corresponding to each direction of the texture edge based on the filtering results of pixels checked in the predetermined directions, and reconstructing the texture of the error block in the spatial domain using weight filtering based on the texture data of surrounding pixels.

The oil temperature in the internal combustion engine is calculated using an oil temperature model, which draws upon at least one parameter that characterizes the operating point of the internal combustion engine. The differential value between the modeled temperature value of the oil temperature model and the measured temperature value of the oil, which is measured by the oil temperature sensor, is included as an input variable in the oil temperature model during an iterative calculation cycle of an oil temperature value of the oil temperature mode, said calculation cycle directly or indirectly following the method step involving the calculation of the differential value.

In a searcher of a CDMA receiver comprising an array antenna, a voltage profile generation portion performs correlation computations of received signals for each antenna element and generates received signal voltage profiles; a phase difference estimation portion uses sample data from each voltage profile at the same time to perform correlation calculations among antenna elements and estimates the phase difference among antenna elements at the above time, and similarly estimates the phase differences among antenna elements at each time. An in-phase synthesis portion uses the phase difference estimate at a prescribed time to coordinate the phases of voltage profiles for each antenna element at the above time and performs synthesis, and similarly coordinates the phases of each antenna element voltage profile at other times and performs synthesis; and, a path detection portion detects the path timing of multiple paths based on the synthesized profile obtained by the in-phase synthesis portion.