Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

276 results about "Optimal methods" patented technology

Device and method for fast block-matching motion estimation in video encoders

Motion estimation is the science of predicting the current frame in a video sequence from the past frame (or frames), by slicing it into rectangular blocks of pixels, and matching these to past such blocks. The displacement in the spatial position of the block in the current frame with respect to the past frame is called the motion vector. This method of temporally decorrelating the video sequence by finding the best matching blocks from past reference frames—motion estimation—makes up about 80% or more of the computation in a video encoder. That is, it is enormously expensive, and methods do so that are efficient are in high demand. Thus the field of motion estimation within video coding is rich in the breadth and diversity of approaches that have been put forward. Yet it is often the simplest methods that are the most effective. So it is in this case. While it is well-known that a full search over all possible positions within a fixed window is an optimal method in terms of performance, it is generally prohibitive in computation. In this patent disclosure, we define an efficient, new method of searching only a very sparse subset of possible displacement positions (or motion vectors) among all possible ones, to see if we can get a good enough match, and terminate early. This set of sparse subset of motion vectors is preselected, using a priori knowledge and extensive testing on video sequences, so that these “predictors” for the motion vector are essentially magic. The art of this method is the preselection of excellent sparse subsets of vectors, the smart thresholds for acceptance or rejection, and even in the order of the testing prior to decision.
Owner:FASTVDO

Precise radiotherapy planning system

The present invention discloses an accurate radiation treatment planning system, which mainly comprises a three-dimensional medical image reconstruction module for reconstruction of human organs and the tumor target area, a three-dimensional dose calculation module of high accuracy photon beam, a three-dimensional dose calculation module of high accuracy electron beam, a conventional radiation plan designing module of the photon beam and the electron beam, a conformal radiation designing module of the photon beam and the electron beam, a reverse plan scheme designing module focused on the photon beam treatment. The present invention independently resolves the main and key technology of the radiation treatment planning system. The present invention develops a highly accurate algorithm and a fast precise optimal method of the three-dimensional dose distribution in photon beam and the electron beam, which distributes in non-uniform human medium. The present invention greatly improves accuracy of the embarking dose in tumor target area in patient body. Because the dose calculation speed has been improved dramatically, the advanced conformal radiation treatment planning system and the treatment planning system focused on radiation are feasible for clinical application. The present invention brings important benefits for improving the radiation treatment effect and improving life quality of the patient.
Owner:成都奇林科技有限责任公司

Method for preparing silver nano-wire in large batch

The invention discloses a method for preparing nanometer silver lines in large batch. anhydrous silver nitrate AgNO3 with the concentration of 99.9percent, anhydrous glycol (C2H6O2) of 99.8percent and polyvinylpyrrolidone (PVP, with the molecular weight of 55,000) of 98percent are selected as the raw materials; in a microwave-assisting environment, the method of adopting the glycol to reduce the silver nitrate is adopted to prepare nanometer silver lines in large batch. By replacing the original solvent heating method with the high-heat environment created by microwave, the method not only greatly saves the reaction time but also reduces the preparing costs for the nanometer silver lines. The glycol, a moderate reducer, can slow the reaction, thus providing the time for the growth of nanometer silver lines. The method of the invention is the optimal method for preparing the nanometer silver line according to testing results by comparing the influence of micro strength, precursor concentration and microwave processing time on the appearance and size of the prepared nanometer lines. The method of the invention has low cost, is simple method and easily controlled and has high practical value in the application to the industrial production developing nanometer silver lines.
Owner:溧阳常大技术转移中心有限公司

Distributed optimal scheduling method for multi-energy complementary microgrid containing multiple bodies

ActiveCN107194516APrivacy protectionAlleviate the contradiction of the mismatch of electric heat ratioEnergy industryForecastingMicrogridElectric power system
The invention discloses a distributed optimal scheduling method for a multi-energy complementary microgrid containing multiple bodies based on an ADMM in the field of power system microgrid technology. According to the method, operators and users form optimal interaction based on an ADMM framework till supply and demand balance is reached. In the optimal iteration process, the operators and the users can complete optimal scheduling just by exchanging expected power supply capacity and heat supply capacity and actual power supply capacity and heat supply capacity, and therefore the privacy of the operators and the users is greatly protected. Due to efficient energy cascade utilization of cogeneration combined with a heat storage system, demand responses at the user side and renewable energy power generation, the method has the advantages of saving energy, reducing emissions, relieving the pressure of power grids and the like; a comfortable indoor temperature is set, the comfort of the users is considered, and the economical efficiency and the subjective intentions of the users are comprehensively considered in terms of cost. The method is an optimal method with lower cost and higher feasibility for economic operation of the multi-energy complementary microgrid.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Transit information provision device, method and program

A transit information provision device is provided which provides transit information with an optimal method according to a situation of a user; the transit information provision device including a transit event information acquiring unit (101) which acquires transit event information which expresses a transit-related event; a transit information provision unit (103) which provides the transit information to a user, the transit information relating to transit event information; an information provision format storage unit (104) which stores the transit information provided by the transit information provision unit; a position information extraction unit (110) which successively extracts position information which indicates a present position of the user; a movement history storage unit (111) which stores a sequence of the extracted position information as a movement history; an information recognition judgment unit (1131) which judges recognition by the user of the transit information stored by the information provision storage unit; a route acceptance unit (106) which accepts an anticipated movement route for the user; a detour traveling judgment unit (107) which judges whether or not the user has traveled along the anticipated movement route, based on the provided transit information stored by the information provision format storage unit and the movement history stored by the movement history storage unit; a transit information provision rule calculation unit (108) operable to calculate a rule for providing the transit information using transit event information when it is judged, by the detour traveling judgment unit that the user has traveled along the anticipated movement route, and transit event information when the user is judged to have detoured by the detour traveling judgment unit; and an information provision control unit (102) operable to, when new transit event information is acquired, control the provision of transit information related to the new transit event information by the transit information provision unit, based on the rule.
Owner:INTERTRUST TECH CORP

Step reservoir flood limit water level combined application dispatching method

The invention discloses a step reservoir flood limit water level combined application dispatching method which comprises the following steps of: 1. establishing a polymerized reservoir-based prediction prestorage model; 2. establishing a prestorage reservoir capability upper limit relationship model of upstream and downstream step reservoirs according to the hydraulic relation between the upstream and the downstream reservoirs and the flood control standards of all flood control points; 3. confirming the optimal target and the constraint condition of step reservoir flood limit water level combined application dispatch; and 4. obtaining a step reservoir flood limit water level combined application dispatching scheme by adopting an optimal method. The invention can be used for carrying out uniform dispatch on the flood limit water level of all upstream and downstream reservoirs of a step reservoir in the flood period and can improve the economical benefits of the step reservoir to the greatest extent on the premise of ensuring the flood control safety of the step reservoir, is suitable for application in the step reservoir or reservoir group flood resource dispatch and can be widely applied to the river basin step reservoir flood limit water level combined application dispatch.
Owner:WUHAN UNIV

Task allocation algorithm in wireless sensor network based on node property

The invention discloses a task allocation algorithm in a wireless sensor network based on node property. The task allocation algorithm is a method for constructing task processing property parameters of a node according to energy consumption, speed, success rate and other factors in task processing of the node. The method comprises the following steps: constructing a single-hop wireless sensor node model; dividing a task into a plurality of task groups based on a task relational graph; calculating the property parameters of each node; and selecting an allocating scheme with the best sum of the property parameters. The task allocation algorithm has the beneficial effects that a task grouping method is utilized to realize parallel processing and real-time response of the task and reduce communication energy consumption at the same time; the calculation energy consumption and the communication energy consumption in task processing of the node are formulized, all factors influencing the task processing of the node are comprehensively considered, and an optimal method is utilized to construct a property parameter; and node properties are quantified, thereby simplifying a task allocating strategy, simply and conveniently finishing the task allocation and realizing the high efficiency of system energy and the real-time response of the task.
Owner:苏州光熙智能科技有限公司

Method and system for reduction of peak-to-average power ratio of transmission signals comprising overlapping waveforms

The present invention provides a method and system for reducing the peak to average power ratio (PAP) of a signal with low computational complexity. According to one embodiment, the present invention is applied to reduce the PAP of an OFDM signal. According to an alternative embodiment, the present invention, is applied to reduce the PAP of a CDMA signal. Rather than seeking the optimum solution, which involves significant computational complexity, the present invention provides for a number of sub-optimal techniques for reducing the PAP of an OFDM signal but with much lower computational complexity. In particular, according to one embodiment utilizing the PTS approach, an iterative technique is used to assign phase factors to each of a set of partial transmit sequences from a set of possible phase factors. Experimental results using the iterative technique showed only a slight degradation (1 dB) from the optimal approach using the same number of subblocks and subcarriers. In an alternative embodiment, which avoids feedback required by the iterative approach, a sequence of phase factors are generated randomly and assigned to each of a set of partial transmit sequences. This procedure is repeated for a pre-determined number of trials and the random sequence generating the lowest PAP is selected. In a third embodiment, a set of phase factors is generated using a structured sequence such as a Walsh sequence.
Owner:AMERICAN TELEPHONE & TELEGRAPH CO

Bioinformatic Approach to Disease Diagnosis

Methods for constructing multivariate predictive models for diagnosing diseases for which test methods are individually inadequate, including: (a) performing laboratory tests on a statistically significant test population of individuals; (b) generating a score function from a linear combination of test panel results;
    • (c) performing a receiver operating characteristic (ROC) regression or alternative regression technique of the score function using those tests and β coefficients calculated simultaneously to maximize the area under the curve (AUC) of the function and chosen simultaneously to generate the largest area below that portion of the ROC curve for the (1−t0) quantile of individuals without disease, where t0 represents the maximum acceptable false-positive rate; (d) calculating individual pre-test disease odds; generating a diagnostic likelihood ratio of disease by determining the frequency of each individual's test score in the diseased population relative to the control population; and multiplying pre-test odds by the likelihood ratio to determine individual post-test disease odds; (e) converting a set of posttest odds into posttest probabilities for each potential multivariate methodology and creating an ROC curve for each methodology by altering posttest probability cutoff values; (f) comparing partial ROC areas generated by one or more regression techniques to determine the optimal methodology; and (g) dichotomizing the optimal methodology by finding that point on the ROC curve tangent to a line with slope (1−p) C/p·B, where p is population prevalence of disease, B is regret associated with failing to treat patients with disease and C is regret associated with treating a patient without disease.
Owner:PORWANCHER RICHARD

Method for efficiently separating and expanding mesenchymal stem cells in human umbilical cord blood

The invention relates to an optimal method for efficiently separating and expanding mesenchymal stem cells in umbilical cord blood in cell therapy. The fact that the mesenchymal stem cells with higher differentiative capacity and smaller immunological rejection are contained in the umbilical cord blood has been proved. The establishment of an umbilical cord blood bank provides a basis for achieving transplantation of autologous cells. However, since the content of the mesenchymal stem cells in the umbilical cord blood is very low (only 0.5 to 30 mesenchymal stem cells are contained in 1*108 mononuclear cells), how to efficiently separate and expand the mesenchymal stem cells becomes a problem hindering the transformation of the mesenchymal stem cells in the umbilical cord blood to the clinical application. At present, in most situations, the mesenchymal stem cells in the umbilical cord blood are separated in virtue of adsorption capacity of the mesenchymal stem cells in a culture vessel, but the success ratio is low, and the characteristics of stem cells are difficult to maintain in an expanding process. The method comprises the steps of coating the culture vessel with protein components, adding multiple growth factors in the culture vessel in a coordination manner, and building the expansion environment of the mesenchymal stem cells in the umbilical cord blood, so as to achieve the efficient separation and expansion of the mesenchymal stem cells.
Owner:夏亮

Method and system for reduction of peak-to-average power ratio of transmission signals comprising overlapping waveforms

The present invention provides a method and system for reducing the peak to average power ratio (PAP) of a signal with low computational complexity. According to one embodiment, the present invention is applied to reduce the PAP of an OFDM signal. According to an alternative embodiment, the present invention is applied to reduce the PAP of a CDMA signal. Rather than seeking the optimum solution, which involves significant computational complexity, the present invention provides for a number of sub-optimal techniques for reducing the PAP of an OFDM signal but with much lower computational complexity. In particular, according to one embodiment utilizing the PTS approach, an iterative technique is used to assign phase factors to each of a set of partial transmit sequences from a set of possible phase factors. Experimental results using the iterative technique showed only a slight degradation (1 dB) from the optimal approach using the same number of subblocks and subcarriers. In an alternative embodiment, which avoids feedback required by the iterative approach, a sequence of phase factors are generated randomly and assigned to each of a set of partial transmit sequences. This procedure is repeated for a predetermined number of trials and the random sequence generating the lowest PAP is selected. In a third embodiment, a set of phase factors is generated using a structured sequence such as a Walsh sequence.
Owner:AMERICAN TELEPHONE & TELEGRAPH CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products