41results about How to "Save software and hardware resources" patented technology

The invention discloses an urban traffic situation identification method based on a directed graph convolutional neural network. The method comprises the steps: carrying out the traffic situation classification of historical traffic flow information, converting an urban road network into a directed graph according to a point-edge conversion rule, and extracting a corresponding sub-graph; then, calculating the weight of a directed edge and the weight between non-directly connected nodes, standardizing the number of nodes of the subgraph, and calculating a traffic information matrix and a feature matrix of the subgraph; finally, designing a traffic directed graph convolutional neural network model, performing training and testing, using the model for classifying real-time traffic flow information to identify the real-time traffic situation of all road sections. According to the method, the incidence relation between directed road sections of different levels and different grades under the hybrid road network is fully considered, a unified standardized model input and traffic situation recognition model is designed, and good universality is achieved; moreover, the method has the characteristics of simple process, easiness in calculation, easiness in programming realization and the like, and can be suitable for complex urban road networks.

The invention discloses a control method and a control device for starting white balance adjustment. The invention utilizes a motion detection to obtain background areas of two continuous frame images, respectively calculates colourity average value of the background areas in the two continuous frame images; if the difference of the colourity average value of the background areas in the two continuous frame images is larger than or equal to a preset first threshold value, the colourity average value of the background areas in the two continuous frame images changes obviously is shown; the colourity average value of the background areas in the two continuous frame images is generally influenced only by actual light source property, thus being capable of judging that the actual light sourceproperty changes and triggering the starting of the white balance adjustment. Therefore, when a moving object in the image has influence on the colourity average value of the whole frame image, misjudgment whether the actual light source property changes can be avoided, thus being capable of avoiding triggering the white balance adjustment when the color temperature of the actual light source doesnot change, also being capable of avoiding that the white balance adjustment is not triggered when the color temperature of the actual light source changes. Therefore, the invention can improve the reliability of the white balance adjustment.

The invention proposes a spherical phased array single pulse digital tracking system and aims to provide a sum-difference beam tracking system without tracking phasing and with the capability of improving the over-top tracking performance. The system is implemented according to the following technical scheme: vector tracking angle error extraction equipment is used for extracting azimuth difference voltage and pitching difference voltage according to the sum, azimuth difference and pitching difference beam digital signals, a direction vector in the current three-dimensional cartesian coordinate system is converted into an error voltage of each component of the vector, which is sent into an angle tracking loop for vector tracking; the vector angle tracking equipment is used for expressing the current target azimuth and the pitching as the direction vector in the three-dimensional cartesian coordinate system, the error voltage of each component of the direction vector extracted in the three-dimensional cartesian coordinate system is sent into the angle tracking loop for vector tracking, the direction vector output by the tracking loop is converted into azimuth and pitching values obtained by tracking, which are fed back to all-digital single-pulse sum-difference beam forming equipment to achieve closed-loop feedback of target direction vector tracking.

The invention discloses a method and a unit for switching tasks in embedded operating systems, wherein the unit comprises a storage module and a stack management module; the storage module comprises a temporary work stack used for saving field data of a currently run task; the stack management module is used for determining and recording the size N of the filed data of the currently run task after receiving a task switching command, storing the filed data of the currently run task in a stack with the storage space size at least equal to N and recording the corresponding relation between the task and the stack. A technical proposal of the invention can solve the problem that the task stack wastes storage space, cannot waste any space basically, is more suitable for systems which are short of storage space and are not particularly frequent in switching. An optimization proposal of the invention can improve switching efficiency and save hardware resources.

A method for realizing a simulation 3D scene desktop includes: entering the scene desktop; detecting a slide gesture; allowing a near view image layer, a middle image layer and a distant view image layer to simultaneously move along with the slide gesture in the slide direction of the slide gesture at a first speed, a second speed and a third speed respectively so as to form a simulation 3D desktop effect, wherein the first speed is larger than the second speed, and the second speed is larger than the third speed. A system for realizing the simulation 3D scene desktop is characterized by comprising a scene desktop entering module, a slide gesture detecting module and a simulation 3D desktop effect management module. The method and the system have the advantages that the scene desktop with comparable 3D visual effects can be created without hardware configuration upgrading and a 3D image rendering engine, charming and dazzling visual effects are created while limited software and hardware resources are saved, and brand new contextualized interaction operation experience is brought to users.

The invention relates to the technical field of motor control, and particularly relates to a constant current driving system and a constant current driving method for a stepping motor with a fixed duty ratio. The system comprises a control unit, a driving circuit, a power circuit, a stepping motor, a current sensor and a protection circuit, wherein the control unit comprises a pulse distributor, a PWM generator and a logic arithmetic unit. The system is characterized in that the control unit also comprises a comparator, wherein the comparator, comprises an input positive end, an input negative end and an output end; the input negative end is connected with a stepping motor winding current given value; the input positive end is connected with the current sensor for receiving a stepping motor winding current feedback value; and the output end is connected with the logic arithmetic unit. The structure of the system is simple, the operation process is simple and convenient, the manufacturing cost is low, a fixed-duty ratio PWM signal is used for carrying out constant current driving on the motor, and the high-performance control on the motor is realized.

The invention provides a method for determining an iron and steel enterprise energy integrated dispatching feasible solution, and the method is suitable for the technical field of iron and steel enterprise energy dispatching. The method includes the steps that an energy medium pipe network information set E, a unit device information set psi and a variable set X corresponding to the input variables or the output variables of all unit devices are built; the variables of the unit devices which are not directly related to one another in the variable set or the variables which cannot be obtained according to the input/output variable are judged as free variables; whether the free variables of the unit devices corresponding to gas energy media and steam and power energy media meet the initial values within the top and bottom limitation ranges corresponding to the free variables or not are determined respectively; the values of the non-free variables are determined according to the correlation of the free variables and the non-free variables in the variable set; whether the values of the variables in the variable set meet the process model constraint of the unit devices or not is judged, and if yes, the variable values are recorded, and a feasible solution is output; if not, the values of the variable which violate the constraint in the variable set are adjusted, and judgment is conducted again. The method solves the technical problem of searching for the iron and steel enterprise energy integrated dispatching feasible solution.

The invention relates to a method for OFDM system to transmit and receive frame prefix. The transmitting method includes that: a base station firstly assembles frame prefix information into package, so as to obtain original 24 bits; then additional 24 bits are calculated and forms 48 bits required by frame prefix coding with the original 24 bits; coding, modulating and four times repetition are carried out on the bit stream of the 48 bits, and the 48 bits are mapped into four sub channels to be transmitted; the receiving method includes that: a receiving terminal firstly extracts corresponding data in four channels, and demodulating, decoding and de-interlacing are carried out on the data to obtain bit stream of the 48 bits; then verification 24 bits are calculated; the verification 24 bits are compared with the rear 24 bits of the 48 bits, if coincident, decoding is correct, frame configuration information is reported to high layer; or else, decoding is error, and an error message isreturned to the base station. The invention can save system soft hardware resource while the receiving terminal analyzes error.

Embodiments of the invention disclose a shopping right and interest object information processing method and device and electronic equipment. The method comprises the steps of providing a first operation option for initiating order sharing for shopping right and interest object information; after a user operation request is received through the first operation option, displaying a shared electronic shopping cart interface associated with the shopping right and interest object, wherein the shared electronic shopping cart interface comprises a second operation option used for adding a commodityobject and a third operation option used for inviting a user to join in order sharing; receiving a user operation request through the third operation option; submitting to a server, generating order combining invitation information about the shopping right and interest object by the server, and providing a fourth operation option for joining in order combining, so that the invited user can enter ashared electronic shopping cart interface associated with the shopping right and interest object through the fourth operation option. Through the embodiment of the invention, network resources and local software and hardware resources of the terminal equipment can be saved, and the success rate of order combination is improved.

The embodiment of invention provides a method and for realizing hybrid access of a camera and a video platform. The method comprises the following steps: acquiring an access instruction of accessing atarget camera by an external system; judging whether the target camera is a camera in a video platform according to the access instruction; if the target camera is the camera in the video platform, determining an interface protocol of the video platform located by the target camera according to the access instruction, and sending the access instruction to the video platform located by the targetcamera according to the access protocol of the video platform located by the target camera; otherwise, determining the interface protocol of the target camera according to the access instruction, andsending the access instruction to the target camera according to the interface protocol of the target camera. By prejudging the access instruction of the external system, the access instruction is sent to the camera or the video platform according to the judgment result or the preconfigured interface protocol, thereby realizing the hybrid access of the camera and the video platform, the software and hardware resource input for constructing the system is reduced, and the stability and the maintainability of the system are improved.

The invention provides a method for measuring downchain SIR of WCDMA system, including: (1) pilot symbols are extracted from data flow in a special physical channel, and pilot symbols of all paths are combined; (2) the incorporated pilot symbols are transfered to one quadrant; (3) signal power and interference signal power for calculating SIR are calculated, and SIR measured value is obtained according to the calculated power. A measuring device for wideband code multiplex downchain SIR comprises N pilot symbol separator, the extracted pilot symbols are sent into a pilot symbol combiner, the combined pilot symbols are transfered by a pilot symbol coherent device to one quadrant, then corresponding power can be calculated by a signal power measurer and an interference signal power measurer, and input into a SIR calculator, the SIR is calculated.

The invention relates to an information security technology, in particular to a key generation method based on physical layer channel characteristics, a data processing method using the key generation method, and client equipment, an Internet of Things system and a computer readable storage medium which implement the key generation method. The key generation method according to one aspect of the invention comprises the following steps: A, determining a pilot frequency training sequence sent between first equipment and second equipment based on coherence time of wireless communication between the first equipment and the second equipment; b, extracting channel characteristics by a pilot frequency training sequence sent by a second device to generate a first initial key, and sending the determined pilot frequency training sequence to the second device, so that the second device can generate a second initial key in the same mode as the mode of generating the first key; and C, using a key negotiation mechanism between the first device and the second device to determine a common key of the first device and the second device according to the first initial key and the second initial key.

The invention is applicable to the technical field of computers and provides an operation method and device of a mobile terminal. The method includes the steps that when a single-hand operation command is received, a main interface of the mobile terminal is divided into multiple sub-interfaces, preset sub-interfaces in all the sub-interfaces are displayed in a preset operation area, and when touch actions of a user on the preset sub-interfaces are detected, operation instructions triggered by the touch actions are executed. Therefore, the user can conduct screen touching operation on the current interface of the mobile terminal with one hand, the efficiency that the user touches a screen and operates the mobile terminal with one hand is effectively improved, and inconvenience caused when the user touches the screen and operates the mobile terminal with one hand is reduced.

The invention discloses a method for simply and wirelessly matching a computer and a remote USB (universal serial bus) peripheral. The method comprises the following steps of (1) establishing a wireless protocol simple bridging physical structure: respectively connecting a pair of wireless transmitter and wireless receiver onto a computer USB port and a USB port of a remote USB peripheral; (2) realizing the data transmission and receiving between the computer and the computer remote USB peripheral on the basis of a transmission protocol stack comprising a computer application layer, a device drive layer, a USB protocol layer and the remote USB peripheral. In the method, the wireless receiver-transmitter is only used as a relay, so that the peripheral is equivalent to the wireless peripheral device of the computer; all USB signaling and data are carried by the wireless protocol, the data relay is transparent through the matching conversion of a USB logic passage and a wireless logic passage, and all signaling and data can be nondestructively and directly transmitted through the wireless protocol. By adopting the method, few protocol stack layers are needed, the communication protocol is simplified, and the high-speed wireless transmission between the computer and the remote USB peripheral can be realized.

The invention discloses an impedance balance degree analysis method of an on-chip power combiner. The method comprises the following steps: firstly, determining a circuit model represented by lumped elements according to an actual physical structure and the number of ports of the power combiner; then, an input port is connected to an alternating voltage exciter; other input ports are connected toa resistor, an output port is connected to a load, a current path is analyzed, the input impedance of the corresponding input port is calculated, an alternating current ground node is regarded as an intermediate node of the current path in the analysis process, the path of the current path is determined by searching the minimum branch current, and the impedance on the path is calculated; and finally, calculating the balance degree between the input ports according to the input impedance of each port and the expression of the balance degree. Compared with a traditional method that a large number of computers and time resources are needed for simulation analysis, when the method is used for analyzing the on-chip power combiner, the process is simpler and more convenient, consumed time is shorter, and the source of balance degree mismatch can be found.