34 results about "Null field" patented technology

The invention discloses a method and a system for coding, decoding and reconstructing video image blocks, wherein the coding method comprises the following steps: selecting a prediction mode, and generating predicted blocks according to the reconstructed pixels around image blocks; calculating the difference between the pixels corresponding to the image blocks and the predicted blocks to obtain residual values, wherein all the residual values constitute a residual block; selecting the arrangement sequence of at least one residual value from a group of rearrangement sequences of the residual values to be selected, and rearranging the residual values in the residual block; transforming the rearranged residual block by selecting a transformation function to obtain the indication of the transformation coefficient of the residual block; and further scanning, quantifying and carrying out entropy-coding on the transformation coefficient. By rearranging the residual sampling values in the residual block in a null field, the characteristics of residual statistics in different modes can be similar or identical, thus achieving the performance similar to the transformation related to the modes by using fewer transformation functions and reducing the storage complexity of a coder and a decoder at the same time.

The invention discloses a method for processing a multi-viewpoint depth video. The method comprises the steps as follows: recombination conversion operation is executed aiming at the depth video; secondly, the converted depth video is smoothly processed in a time domain; thirdly, recombination conversion operation is executed aiming at the smoothly processed depth video to obtain a pretreated depth video; fourthly, coding compression, decoding recombination operation are executed aiming at the pretreated multi-viewpoint depth video; fifthly, depth recovery and null field smooth processing are executed aiming at decoded and recombined multi-viewpoint depth video; and lastly, a virtual viewpoint video image is mapped by the processed multi-viewpoint depth video. The method has the advantages that the pretreatment method can improve the time domain relativity of a depth video sequence, and further effectively improve the coding efficiency of the depth video; as for the situation of a code QP equal to 22, 27, 32 and 37, the coding efficiency can be saved by 17.07 percent to 38.29 percent, and the mapping quality of the obtained virtual viewpoint video image can be improved by about 0.05 dB.

A method and system for multi-channel audio encoding and decoding with backward compatibility based on the null field information maximum entropy rule is disclosed. The technical solution can adopt any existing stereo channel encoding system to encode the multi-channels audio signal, so as to transmit the multi-channel audio signal at the low bit rate identical with that of the stereo audio signal. It is more important that the existing stereo channel reproducing system can reproduce the audio format which utilizing the encoding method.

The invention provides a regulation and control method for a Skyrmion in a hexagonal MnNiGa. The regulation and control method comprises the following steps of 1) applying a magnetic field to the hexagonal MnNiGa, wherein the magnetic field is not strong enough to convert a strip-shaped magnetic domain in the hexagonal MnNiGa into the Skyrmion; and the direction of the magnetic field is not parallel to a family of crystal plane [001] in the hexagonal MnNiGa; and 2) applying a current to or / and heating the hexagonal MnNiGa to enable the strip-shaped magnetic domain to disappear. By virtue of the regulation and control method, a high-density Skyrmion array is formed in the hexagonal MnNiGa material system; and in addition, the high-density Skyrmion can exist in both of a null field and a wide-temperature-range room temperature.

A method for removing cultural noise from a measurement of the field generated by an electromagnetic source, such as a current bi-pole or a magnetic loop source, the method comprising: simultaneously measuring the electromagnetic signal at a field measurement position and a calibration position close to the field measurement position, but in a null field of the source; using the field measurement and the calibration measurement to compute a filter that estimates the component of the field measurement that is correlated with cultural noise; convolving the computed filter with the calibration measurement to yield the estimated cultural noise component, and subtracting that component from the field measurement.

The invention discloses an all-shearing type magneto-rheological damper. The all-shearing type magneto-rheological damper is characterized by comprising an outer cylinder, an inner cylinder and a ball screw pair, wherein the inner cylinder is coaxially arranged with the outer cylinder, shearing discs are fixed by the ball screw pair, the inner wall of the inner cylinder is provided with electromagnetic coils and sharing ring sets corresponding to the shearing discs one by one, magneto-rheological liquid is filled in a cavity of the inner cylinder, at least one electromagnetic coil is arranged between adjacent shearing rings fixed on the inner wall of the inner cylinder, and the shearing discs, the shearing rings and the inner cylinder form a closed flux loop. On the premise of keeping same external size and energy consumption of a magneto-rheological damper, null-field viscous damping of the magneto-rheological damper is reduced, controllable damping ratio range is enlarged, and the all-shearing type magneto-rheological damper is added with potential for application to a high-speed impact / vibration control system. Besides, service efficiency of the magneto-rheological liquid in the magneto-rheological damper is improved, and cost of the magneto-rheological damper is effectively reduced.

A generator including a first magnetic assembly and a second magnetic assembly wherein the first and second magnetic assemblies are arranged in parallel for the production of a magnetic field and a null magnetic field region, a rotor positioned between the first and second magnetic assemblies the rotor being coupled to a drive shaft extending through the first and second magnetic assemblies wherein a portion of the rotor is positioned in the null field region, a least one current transfer mechanism coupled to the rotor in the null field region and at least one current transfer mechanism coupled to the shaft, a drive mechanism attached to the shaft, whereby actuation of the drive mechanism causes rotation of the rotor in the magnetic field to produce a electric potential between the first and second current transfer mechanisms.

A method of multi user multiple input multiple output (MIMO) communication in a wireless local area network (WLAN) system; and a transmitting device therefore are discussed. The method according to an embodiment includes generating an Aggregate-Medium Access Control Protocol Data Unit (A-MPDU) including an A-MPDU subframe, the A-MPDU subframe including a Medium Access Control Protocol Data Unit (MPDU) delimiter field; and selecting a type of a guard interval. When the A-MPDU is generated for a plurality of receiving devices, the transmitting device selects a short guard interval only if all of the plurality of receiving devices support the short guard interval. The MPDU delimiter field includes a null field and an MPDU length field, the null field indicates a corresponding A-MPDU subframe is used to pad the A-MPDU, and the MPDU length field indicates a length of an MPDU. The null field is a 1-bit information field.

The invention discloses an intelligent electronic nameplate of a passive multistable CH-LCD (cholesteric-liquid crystal display). The intelligent electronic nameplate comprises a plastic panel, a multistable cholesteric liquid crystal display module, a photovoltaic plate component and a WIFI connector, the multistable cholesteric liquid crystal display module, the photovoltaic plate component and the WIFI connector are positioned on the plastic panel, the multistable cholesteric liquid crystal display module is connected with the photovoltaic plate component and the WIFI connector, and the photovoltaic plate component is connected with the WIFI connector; the multistable cholesteric liquid crystal display module comprises the cholesteric-liquid crystal display, a FPC (flexible printed circuit), a driving IC (integrated circuit), a functional module, an electric energy input connecting point and a WIFI signal input connecting point, the functional module is connected with the driving IC positioned on the cholesteric-liquid crystal display, the electric energy input connecting point is connected with the photovoltaic plate component through a circuit, and the WIFI signal input connecting point is connected with the WIFI connector. The intelligent electronic nameplate is scientific and reasonable in design and can serve as a LCD signboard which is passive, energy-saving, multistable, stable in null field, high in reflection brightness, portable and light for high-end places like high-grade meeting rooms, international markets and airports.

The invention provides a large-scale airspace use plan conflict detection and relief method based on a grid model. The method grids the airspace environment according to the airspace use plan, and performs grid discrete and digital coding on continuous airspace; The airspace grid built-in attribute of the primary key digitally describes the airspace occupancy relationship; establishes a grid model-based airspace digital description method to realize the grid representation of the traditional airspace shape; establishes an airspace conflict function and uses the grid built-in attributes to calculate and determine multiple airspaces Use the planned conflict airspace; design a 4-dimensional translational airspace conflict resolution algorithm to achieve dynamic resolution of airspace conflicts. The present invention can not only quickly and effectively detect the airspace conflict position and range of large-scale air use plans, but also can solve the airspace relief method online. The whole process is calculated by grid coding, which reduces the computational complexity and effectively improves the computational efficiency.

This invention discloses an intra-frame coding method based on airspace decomposition. The method comprises decomposing I frame into a basic sub-frame and three predication sub-frames, and encoding the four sub-frames orderly, using a quick mode selection algorithm for the base sub-frame to carryout the sub-frame predication, carrying out the sub-frame compensation according to the selected optimum mode, taking the reestablished sub-frame as a reference frame, carrying out the predication and compensation among the sub-frames for the predicated sub-frames, synthesizing the reestablished sub-frames of the four sub-frames, forming the reestablished frame of the I frame. The result of the experiment indicates that the perceived quality of the reestablished frame is better than that of the reestablished frame of the recommended algorithm in the H.264 reference software JM9 when PSNR values are identical.

The present invention provides an object automatic conversion method and a terminal. According to the preset conversion identifier corresponding to the class, the first category containing the conversion identifier in the data transmission object DTO is obtained; and it is judged whether the first category includes the preset conversion Process the identification, if yes, change the null field in the first category to an empty string, and create the corresponding second category in the view object VO through APT technology based on the changed first category; if not, then based on The first category, through the APT technology, creates the corresponding second category in the view object VO; according to the annotation of the preset incremental field, obtains the first incremental field in the DTO containing the annotation of the incremental field; according to The first incremental field, through APT technology, creates the corresponding second incremental field in the view object VO, so as to realize the conversion of DTO into the corresponding VO, and can automatically convert the corresponding class and incremental field, which improves the object conversion processing efficiency.

The invention provides a regulation and control method for a Skyrmion in a hexagonal MnNiGa. The regulation and control method comprises the following steps of 1) applying a magnetic field to the hexagonal MnNiGa, wherein the magnetic field is not strong enough to convert a strip-shaped magnetic domain in the hexagonal MnNiGa into the Skyrmion; and the direction of the magnetic field is not parallel to a family of crystal plane [001] in the hexagonal MnNiGa; and 2) applying a current to or / and heating the hexagonal MnNiGa to enable the strip-shaped magnetic domain to disappear. By virtue of the regulation and control method, a high-density Skyrmion array is formed in the hexagonal MnNiGa material system; and in addition, the high-density Skyrmion can exist in both of a null field and a wide-temperature-range room temperature.

The invention discloses a method and a system for reducing a front-end white screen. The method comprises the following steps: generating an empty message configuration component corresponding to an array and an object; receiving original data of the front-end interface, and identifying the structure and the type of the original data; judging whether a null field or an underfield field exists in the original data or not; if the null field or the underfield field exists, performing configuration according to the type to which the null field or the underfield field belongs and an empty message configuration component; and the null fields or the underfield fields of different types are converted into the fields of the same type. According to the method and the system, by designing a data configuration rule and a data formatting algorithm, an access invalid object which is transmitted by a front end and causes a white screen is converted into an expected format, so that even if null judgment processing is forgotten to be carried out, a wrong white screen result cannot be obtained.

The invention discloses a digital image fuzzy intensification method for inosculating a plurality of fuzzy operators. The method is divided into four steps: step one, brightness-darkness grades are defined as four grades; step two, for a first grade image and a second grade image , a linear transit function is adopted to make conversion, for a third grade image and a fourth grade image, a nonlinear transit function is adopted to make conversion; step 3, on a fuzzy field, different brightness-darkness grades choose different fuzzy operators to make fuzzy image intensification: for the first grade image, a multinomial intensification operator is adopted to make fuzzy field intensification; for the second grade image, a logarithm type intensification operator is adopted to make fuzzy field intensification; for the third grade image and the fourth grade image, a sectional transit type intensification operator is adopted to make fuzzy field intensification; step 4, inverting back to null-field, fuzzy intensified null-field images are obtained and sent out. The invention can get a better visual efficiency whether the image is of insufficient exposure or over exposure.

The embodiment of the invention discloses a data storage method and device, a storage medium and a server. The method comprises the steps of obtaining target data; filling in target data with null field information based on the non-null field information corresponding to the same key field, and adding identification information about whether the target data is changed data or not to the target data according to the filling operation, wherein the field information of the target data with null field information is the same as the field information corresponding to other key fields of the targetdata to which non-null field information belongs; merging the target data with the same field information corresponding to all the key fields in the target data after the filling operation is executed, and determining the type information of the merged target data according to the identification information and the source of each piece of target data in the merged target data; and storing the merged target data according to the type information. Through the scheme, the resource consumption of data storage can be reduced, and the availability of locally stored data during data storage is ensured.