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170 results about "Self adaptive" patented technology

Self-Adaptive System. an automatic control system that preserves its operational capability under conditions of unforeseen change in the properties of the controlled system, in the control goal, or in the environment by changing its operation algorithm or searching for optimal states.

Nonvolatile memory with adaptive operation

InactiveUS20080092015A1Error detection/correctionStatic storageSelf adaptiveOperating system
In a nonvolatile memory system a Soft-Input Soft-Output (SISO) decoder corrects errors in data that is read from a memory and a statistical unit connected to the SISO decoder collects data regarding corrections. The statistical unit generates at least one output based on the collected data and at least one operating parameter of the memory is modified in response to the output.
Owner:SANDISK TECH LLC

Adaptive device-initiated polling

A method includes periodically sending a polling call to an enterprise system outside the firewall at a first polling rate during normal operating conditions, monitoring for a fault condition, periodically sending polling calls to the device outside the firewall at a second polling rate when a fault condition is detected, the second polling rate being higher than the first polling rate. The second polling rate is used as result of a fault condition. The method also includes sending a problem report with the polling calls when the fault condition is detected.
Owner:PARAMETRIC TECH CORP

Adaptive histogram reinforced defogging method based on dark channel

ActiveCN105225210AEffective recoveryHigh color reproductionImage enhancementSingle imageDepth of field
The invention discloses an adaptive histogram reinforced defogging method based on a dark channel. According to the method, a dark channel model is adopted to obtain a dark channel map of a foggy image, the dark channel map is divided into a plurality of square blocks, and a weighting factor of each square block is calculated; then, a sub-block histogram of each square block is subjected to statistics with an implementation method of CLAHE; according to the sub-block histogram, a sub-block limit contrast histogram is calculated; a histogram balanced grey mapping relationship table corresponding to the square block is calculated based on the contrast histogram, and contrast stretching grey mapping is calculated; a final grey mapping relationship table is calculated by using the weighting factor, the grey mapping relationship table and the contrast stretching grey mapping; by using the grey mapping tables of the four adjacent square blocks, a center pixel of each block adopts an original grey mapping relationship, while the other pixels are acquired via grey mapping interpolation of the four blocks, and a defogged image is obtained; and finally, the image is output. According to the adaptive histogram reinforced defogging method based on the dark channel, provided by the invention, the dark channel model and a traditional CLAHE image reinforcement algorithm are combined, so that depth information in a foggy day is effectively utilized and complicated transmission pattern estimation is avoided; a single image is processed; and the adaptive histogram reinforced defogging method is good in defogging effect and high in practicality.
Owner:NANJING 55TH INSTION TECH DEV

TDS-OFDM receiver self-adaptive channel estimation balancing method and system

InactiveCN1677908AAccurate estimateSolve the uniformity problemAmplitude-modulated carrier systemsOrthogonal multiplexSelf adaptiveMultipath interference
The method decomposes received TDS - OFDM signal into two parts: frame synchronization of PN code and DFT data. Based on characteristics of transmission channel, one of following methods is selected to carry out channel estimation: (1) time domain correlation method of PN code is selected, when channel possesses short time multipath disturbance; (2) frequency domain PN transformation approach is selected when channel possesses long time multipath disturbance; (3) frequency domain decision directed feedback method is selected when channel possesses stability characteristics of invariant time. The invention is realized at FPGA of Tsinghua DMB - T, ASIC version receiver. Favorable effect is obtained through actual try out broadcasting and testing, and performance is better than other system evidently.
Owner:TSINGHUA UNIV

Modularized sub-action multi-legged robot motion controller and control method thereof

The invention discloses a modularized sub-action multi-legged robot motion controller and a control method thereof. The modularized sub-action multi-legged robot motion controller comprises an upper computer module, a sub-action multi-legged robot master control node module and a sub-action multi-legged robot lower computer node module, wherein the upper computer module is connected with the sub-action multi-legged robot master control node module through a converter and a shielded twisted pair; the multi-legged robot master control node module is connected with the sub-action multi-legged robot lower computer node module through a shielded twisted pair. The control method comprises the following steps: transmitting motion commands according to the selected mode and the environment video information, processing the motion commands into special motion parameters of motors corresponding to lower computer sub-modules, executing the motion commands by lower computer sub-modules, and transmitting the video information. The gait planning is simple, the control is simple and convenient, a backup control scheme is provided, the lower computer nodes adopt the modularized design of being independent in hardware and self-adaptive in software, the extension is convenient, and the safety and the reliability are realized.
Owner:NANJING UNIV OF SCI & TECH

Image vibration-compensating apparatus and method thereof

InactiveUS20070132852A1Reasonable priceSimple dataTelevision system detailsPicture signal generatorsDigital videoMotion vector
An image vibration-compensating apparatus and a method thereof are provided. The apparatus and the method are applied in an image-capturing apparatus, such as a digital still camera (DSC) or digital video recorder (DVR), for compensating image vibration when capturing an image. The image vibration-compensating apparatus comprises an adaptive edge extractor, a sub-region movement detector, a frame motion calculator, and a correcting vector generator. The image vibration-compensating apparatus analyses the difference between the current image and the previous image, and outputs the correcting motion vector to achieve the function of image vibration-compensation. In the image vibration-compensating method, an accumulate compensation mode is used to prevent fast motion of an image frame which will cause discomfort of the user's eyes when a relatively large image vibration occurs in a short period.
Owner:NOVATEK MICROELECTRONICS CORP

Image compression encoding and decoding devices without visual loss, and encoding and decoding methods

ActiveCN104349171ADigital video signal modificationSelf adaptiveImage compression
The invention discloses an image compression encoding and decoding devices without visual loss, and encoding and decoding methods. The encoding method involves, first of all, dividing each row of an image into a plurality of micro-blocks, analyzing the micro-blocks, and determining the types of the macro-blocks; performing graphic encoding on graphic-type micro-blocks, performing intraframe mode prediction on non-graphic-type micro-blocks, and solving residual errors between current macro-blocks and predicted macro-blocks; analyzing the residual errors, and performing wavelet transformation on the residual errors needing wavelet lifting to obtain transformation coefficients; then according to image content, adaptively performing code rate control, and forming bit surface encoding on the input residual errors or the transformation coefficients to obtain final code rates; and finally, through combination with the predicted macro-blocks, reconstructing the macro-blocks. According to the invention, the purpose of high-quality and high-speed transmission of a single row of the image at a constant code rate is achieved, the image after compaction and an original image are free from the visual loss, the complexity is quite low, and fewer resources are occupied.
Owner:SHANGHAI TONGTU SEMICON TECH

Self-adaptive endpoint detection method and self-adaptive endpoint detection system for isolate word speech recognition

InactiveCN103366739AGood effectWith noise immunitySpeech recognitionSpeech identificationZero-crossing rate
The invention discloses a self-adaptive endpoint detection method and a self-adaptive endpoint detection system for isolate word speech recognition. The self-adaptive endpoint detection method for isolate word speech recognition comprises the following steps: a, a voice input step, wherein a voice signal containing an isolate word to be recognized is input; b, a voice preprocessing step, wherein the voice signal is subjected to amplitude translation and normalization and framing processing operation, and short time average energy and a short time average zero-crossing rate of each frame of voice are calculated; c, an isolate word endpoint rough detection step, wherein isolate word endpoints are roughly estimated through utilization of the short time average energy and the short time average zero-crossing rate of each frame of the voice signal and constraint on the shortest length of continuous voice frames before and after the end points, d, a detection threshold self-adaptive adjustment and accurate endpoint detection step, wherein through utilization of constraint on the smallest time duration and the largest time duration of the isolate word, the detection threshold is subjected to dynamic adjustment operation, the voice endpoints are subjected to front and back fine adjustment, and accurate isolate word endpoints are obtained; e, an isolate word endpoint output and isolate word voice recognition step, wherein the accurate isolate word endpoints are output and isolate word recognition is realized by using voice recognizing technologies.
Owner:ZHENGZHOU SCI TECH INFORMATION RESINST

Adaptive read and write systems and methods for memory cells

ActiveUS20080106936A1Facilitate writing and readingRead-only memoriesDigital storageSelf adaptiveThreshold voltage
Adaptive memory read and write systems and methods are described herein that adapts to changes to threshold voltage distributions of memory cells as of result of, for example, the detrimental affects of repeated cycling operations of the memory cells. The novel systems may include at least multi-level memory cells, which may be multi-level flash memory cells, and a computation block operatively coupled to the multi-level memory cells. The computation block may be configured to compute optimal or near optimal mean and detection threshold values based, at least in part, on estimated mean and standard deviation values of level distributions of the multi-level memory cells. The optimal or near optimal mean and detection threshold values computed by the computation block may be subsequently used to facilitate writing and reading, respectively, of data to and from the multi-level memory cells.
Owner:MARVELL ASIA PTE LTD

Method for detecting contour of target object

ActiveCN102254304APreserve integrityAdaptableImage enhancementVisual technologyComputer graphics (images)
The invention belongs to the technical field of computer vision and discloses a method for detecting the contour of a target object. The method comprises the following steps of: dividing a non-classical receptive field into an end area and a side area; performing constant inhibition in the side area; performing selective action in the end area by using influence of contrast; during computation of the selective action, setting a threshold according to a contrast value in a certain neighborhood of each pixel by using an adaptive method to judge whether the pixel is inhibited or facilitated; according to an inhibitory action of the side area of a non-classical receptive field filter on the pixel at the center position, suppressing texture and other background information with similar local characteristics, and further highlighting contour information; and according to the inhibitory action of the side area of the non-classical receptive field filter, regulating the size of the action of the end area to preserve the completeness of a contour line as better as possible and inhibit background interference to the largest content. The method for detecting the contour of the target object can be applied to detection, identification and the like of the target object in the computer vision.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Novel model-free adaptive sliding mode control method for hybrid type automobile electrophoretic-coating conveying mechanism

InactiveCN108227490AImplementing Adaptive Sliding Mode ControlRealize motion controlAdaptive controlHybrid typeTime delays
The invention discloses a novel model-free adaptive sliding mode control method for a hybrid type automobile electrophoretic-coating conveying mechanism. The method comprises the following steps: firstly, for the hybrid type automobile electrophoretic-coating conveying mechanism, acquiring a mechanism kinetic model capable of comprehensively reflecting kinetic characteristics and also capable of realizing real-time control on line and in real time according to a time delay estimation technology; then designing a time delay estimation-based sliding mode controller based on the kinetic model acquired according to time delay estimation; further, designing a novel adaptive law for a switching gain of time delay estimation-based sliding mode control, thereby obtaining an adaptive sliding mode controller which does not need upper-bond information of an uncertain system of the conveying mechanism; finally, realizing model-free adaptive sliding mode control of the conveying mechanism through software programming. The novel model-free adaptive sliding mode control method can enable a system to be high in tracking performance under the condition of not using the upper-bond information of theuncertain system of the conveying mechanism, and no mathematical model for the conveying mechanism is required to be built; furthermore, sliding mode control chattering can be effectively weakened.
Owner:JIANGSU UNIV

Video image foreground detection method for traffic intersection scene and based on network physical system

InactiveCN102930719AAgile feelingAccurate feelingDetection of traffic movementCharacter and pattern recognitionPhysical systemForeground detection
The invention discloses a video image foreground detection method for a traffic intersection scene and based on a network physical system, wherein the main application scene is an intersection in the urban traffic. The method mainly comprises the following steps of: performing lane line detection in the extracted background frame and dividing an area of interest according to a video image obtained by a static video camera in the system; adjusting the background learning process and the learning rate of the pixel points of different image areas by use of the external information sensed by the system; and adaptively adjusting the parameters in the algorithm in real time to finally obtain a more accurate foreground point detection result. The method disclosed by the invention realizes adaptive adjustment of the background learning rate according to the physical environment under the condition of complicated varying foreground speed in the scene of the urban traffic intersection.
Owner:BEIHANG UNIV

Method for handling missing values during data stream decision tree classification

InactiveCN104035779ASpecific program execution arrangementsSelf adaptiveClassification result
The invention belongs to the technical field of data stream mining, and particularly relates to a method for handling missing values during data stream decision tree classification. The method includes reading data samples in data streams and updating sliding windows; updating missing handlers if the missing handlers corresponding to attributes are available when the detected attributes in the current data samples have the missing values, or adaptively selecting and creating missing handlers according to characteristics of data if the missing handlers corresponding to the attributes are not available; supplementing the missing values in the data samples by the aid of the missing handlers to obtain complete data samples, training the complete data samples according to a Hoeffding decision tree classification process and returning data stream decision tree classification results. Compared with existing methods, the method has the advantages that the method is superior in time performance, the classification accuracy of decision tree models can be sufficiently guaranteed, accordingly, the time expenditure can be reduced, the time performance can be improved, the data stream classification handling speeds can be increased, and requirements of actual data stream handling application can be met.
Owner:INST OF SOFTWARE - CHINESE ACAD OF SCI

Monocular self-adaption cross laser visual corrugated plate welding line tracking sensor

The invention relates to a monocular self-adaption cross laser visual corrugated plate welding line tracking sensor. The sensor comprises a set of self-adaption visual viewing field device, a camera based on an area array CCD, a self-adaption oscillator, a linear laser emitter, a spot laser emitter, a set of self-adaption ahead distance transfer mechanism and a sensor protective cover. In a welding starting point position, the self-adaption oscillator can perform self-adaption swing to adjust the length of scanning laser, and the self-adaption visual viewing field device can adjust a visual viewing field range in a self-adaption manner; in the welding process, a height deviation of a welding gun is obtained according to a distance from the intersection between linear laser and a welding line and the intersection between the linear laser and the scanning laser, a left-right deviation is obtained through the length change of the scanning laser, and the turning point position and the bending angle of the corrugated plate welding line are determined according to the bending position and angle of the scanning laser; and the self-adaption ahead distance transfer mechanism can adjust an ahead distance according to the parameter change of a welding process in a self-adaption manner.
Owner:湖南艾克机器人有限公司

Self-adaption optical image high resolution restoration method combining frame selection and blind deconvohtion

InactiveCN101206762AFast convergenceAvoid the effects of true target restorationImage enhancementOptical measurementsImaging qualityDiffusion function
The invention relates to a self-adaptive optical image high resolution restoration method combined with frame selection and blind deconvolution, comprising the following steps: firstly, a short exposure image sequence gn (x, y) is recorded when a self-adaptive optical closed loop is corrected; shannnon entropy of each frame of image in the sequence is calculated; a degraded image gm (x, y) with lower entropy is selected for blind deconvolution image restoration; secondly, an initial value hm (x, y) of a point spread function is generated by utilization of random phase; thirdly, a target f(x, y) is estimated by using the gm(x, y) and the obtained hm (x, y), and an estimated value f(x, y) is obtained after addition of positivity limitation on the target; fourthly, an estimated value hm (x, y) of the point spread function is obtained by using the gm (x, y) and the f(x, y), and an estimated value h(x, y) is obtained after addition of positivity limitation in the same way; fifthly, inspection is made whether an iterated value h(x, y) and an iterated value f(x, y) meet iteration stopping requirements or not; if the iterated values do not meet the iteration stopping requirements, the third step is returned; if the iterated values meet the iteration stopping requirements, circulation is stopped and the f(x, y) and the h(x, y) are outputted. The invention has the advantages of effective improvement of restoration quality, acceleration of convergence rate, capability of well compensating correction capability under hardware limitation of a self-adaptive optical system, and improvement of imaging quality.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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