378results about How to "Simplicity guaranteed" patented technology

The invention discloses a method for multi-input multi-output transmission for precoding. The method comprises the following steps: a fundamental matrix is selected, a column vector is selected from the fundamental matrix according to the dimension of a precoding matrix under each rank, the precoding matrixes are combined into codebooks, and the codebooks are respectively stored into the transmitting end and the receiving end of a multi-input multi-output transmission system; the receiving end selects precoding matrixes from the codebooks, and feeds back the indexes thereof to the transmitting end; the transmitting end uses the precoding matrixes corresponding to the indexes when the next transmission is performed, performs linear transformation in spatial domain to signals to be transmitted and then transmits the signals. The invention also discloses a method for multi-input multi-output codebook coding for precoding. The method enables the system to meet the feedback expenses and obtains good performance gain.

The invention discloses an Internet+hazardous waste management system and method. The Internet+hazardous waste management system comprises a hazardous waste supervision unit, a hazardous waste generation unit, a hazardous waste transportation unit, a hazardous waste disposal unit, a cloud platform, an enterprise information management system and an early warning system, wherein data transmission is performed between the hazardous waste supervision unit and the cloud platform; data transmission is performed between the cloud platform and the hazardous waste generation unit, the hazardous waste transportation unit and the hazardous waste disposal unit; and the early warning system is used for receiving information transmitted by the cloud platform. Hazardous waste is effectively treated under the actions of the hazardous waste generation unit, the hazardous waste transportation unit and the hazardous waste disposal unit in sequence, and a repeated confirmation of hazardous waste and confirmation of transportation vehicles are involved, so that the safety of the hazardous waste is ensured, and the problem of loss is solved. The Internet+hazardous waste management system is firmly connected in structure and high in intelligence degree during use, and a small number of personnel participate. The method is compact in flow; illegal missing of the hazardous waste is effectively reduced; and the supervision strength of the hazardous waste is enhanced.

The embodiment of the invention discloses a mobile terminal and a method for opening a camera of the mobile terminal. The mobile terminal comprises the camera, a human body induction module and a processor, wherein the human body induction module and the camera are connected with the processor; the human body induction module detects non-contact user operation within a preset distance; a corresponding induction signal is sent to the processor; and the processor generates a trigger signal for opening the camera according to the received induction signal. A technical effect that the camera of the mobile terminal can be opened quickly without touching a screen of the mobile terminal or pressing down a key of the mobile terminal is achieved.

The invention provides a mapping method and device for an indication channel PHICH of a physical hybrid automatic repeat request to a physical sub-carrier, comprising a plurality of mapping steps of a frequency domain. The invention is characterized in that: a plurality of usable physical sub-carriers of an FDD system is evenly divided into four areas; the three resource groups of a PHICH are one-to-one correspondence with the three areas of the four areas. The invention has the advantages of ensured diversity gain of PHICH and simple realization and little influence on performance of other downlink physical channels.

The invention provides a micro-power wireless networking and communication method, a master node and a system. The method is mainly applied to a communication system consisting of a master node and at least two slave nodes, and comprises the following steps: acquiring neighbor field intensity information tables of the at least two slave nodes by using the master node; traversing all paths ranging from the master node to each slave node according to the neighbor field intensity information tables; calculating the route weight value W of each path ranging from the master node to the slave nodes according to a formula; saving all paths ranging from the master node to the slave nodes and the route weight values W of the paths, which are taken as route information of the slave nodes, in a route table, and transmitting the route information of the slave nodes, which is taken as configuration parameters, to the slave nodes. Through the way, the communication instantaneity can be ensured, and the communication success rate can be increased.

The invention provides an urban convenient carpooling system and method thereof. The system is provided with a mobile phone of a user, a carpooling car and an information center, wherein a vehicle-mounted terminal, a GPS (Global Positioning System) navigator, a non-contact radio frequency identification card reader and a user memory are arranged in the carpooling car; and the vehicle-mounted terminal is provided with a GPS/GPRS (General Packet Radio Service) positioning communication module. As a data communication passageway and a management platform are provided between a driver and a carpooling user by using the information center and the vehicle-mounted terminal, and the phone number of the user serves as main operation data for the appointment and the implementation of the carpooling, the purpose of independent carpooling between the driver and the carpooling user can be achieved conveniently and quickly. When the carpooling system and method are adopted, the safety, reliability and convenience of the carpooling operation can be ensured, meanwhile the calculation and sharing of the carpooling fee can be realized conveniently and quickly.

The invention discloses a method for circularly reading and writing in a buffer zone, which comprises the following steps: when to-be-written data is written into the buffer zone but the tail space of the buffer zone is insufficient to store the complete to-be-written data, writing the to-be-written data from a starting position of the buffer zone and marking on the tail of data in the buffer zone; and when the data is read from the buffer zone and an address-reading pointer points at the mark, directly searching for the valid data position from the starting position of the buffer zone and then performing the subsequent data-reading operation. The invention also discloses a device for circularly reading and writing in the buffer zone. By using the method and device, the speed for reading data can be increased while the operation for reading data is simple and convenient.

The invention provides a channel estimation method for a PDM-CO-OFDM (Pulse Duration Modulation-Coherent Optical-Orthogonal Frequency Division Multiplexing) system and relates to a system applying a multi-frequency code in a transmission process of digital information. The channel estimation method comprises the following steps of: designing and selecting a discrete guide frequency format at a sending end of the PDM-CO-OFDM system; sending information data and guide frequency data; utilizing a least square algorithm, namely an LS (Least Algorithm) algorithm, to carry out guide frequency point channel estimation on an orthogonal frequency division multiplexing mark by the information data and the guide frequency data received by a receiving end; carrying out linear interpolation on a frequency region and carrying out multi-wavelet de-noising on an obtained interpolation value; carrying out the linear interpolation on a time region; carrying out mark inner frequency averaging on an interpolation value result to finish combined de-noising; carrying out matrix inversion algorithm on a channel property subjected to the de-noising treatment; and finally, estimating sending data. According to the channel estimation method, based on a discrete guide frequency, the average combined de-noising of a multi-wavelet and a mark inner frequency region is used for carrying out channel estimation, so that defects that the calculation amount of the relative conventional OFDM channel estimation method is increased and the system expenditure is increased are overcome.

The invention relates to a laser detection and control system for barriers between a shield door of a metro platform and a train door, comprising a monitoring unit, a control unit and an alarm unit, wherein, the controller comprises a CPU module, a liquid crystal terminal, a signal isolator, buttons and a safety relay; generating lasers are respectively installed on a front bracket, and a laser receiver or a laser reflection plate is installed on a rear bracket corresponding to the front bracket; the control ends of the generating lasers are connected with the output end of the controller, and the output end of the laser receiver is connected with the input end of the controller; the corresponding output end of the controller is correspondingly connected with the control input end of the shield door; and the corresponding output end of the controller is connected with a buzzer and a caution light of the platform. The laser detection and control system realizes the intelligent operation of judging the existence of barriers between the shield door of the metro platform and the train door, has the advantages of compact integral structure, reasonable cost, easy and convenient installation, simple and intelligent operation, stable and reliable performance, higher practicability and favorable development prospect, and is applicable to metro platform.

The invention provides an interactive image processing method used for a video. The method comprises the following steps of extracting key frames from a video sequence; overlaying frames between adjacent key frames one by one to form a key frame cluster used for interactive marking; distinguishing the images of the key frames into a foreground area, a background area and an unknown area; carrying out spectral clustering and alpha value estimation on the key frames to obtain the sectional drawing result of the key frames; and finally, transferring the sectional drawing result of the key frames to the whole video sequence to obtain a final sectional drawing result. Because the foreground points are interactively marked on each key frame cluster, spatiotemporal information contained in the video sequence is fully utilized, and the naturalness and the intuition of user interaction are guaranteed on the basis of the user interface of the key frame, thereby conforming to the observation habit of a human visual system. Marking on the key frame clusters replaces independently marking on the key frames, and therefore the method has strong robustness for the situation with the big foreground object local action.

The invention discloses a photovoltaic high-frequency chain grid-connected inverter capable of restraining input low-frequency current ripples. The inverter comprises a first inverter, an LCL-T resonance network, a high-frequency transformer, a rectifier circuit, a direct-current filter circuit, a second inverter and an LCL filter. The input end of the first inverter is connected with a photovoltaic array, and the output end of the first inverter is connected with the LCL-T resonance network. The LCL-T resonance network comprises a T circuit which is composed of an inductor Lr, a capacitor Cr and an inductor Lk. The inductor Lr is connected to the output end of the first inverter in series, and the inductor Lk is connected with the primary side of the high-frequency transformer in series and then connected with the capacitor Cr in parallel. The secondary side of the high-frequency transformer is connected with the rectifier circuit, the direct-current filter circuit and the second inverter in sequence. The LCL filter is connected to the output end of the second inverter, and the output end the LCL filter is electrically connected with a grid. By applying the LCL-T resonance network to the photovoltaic high-frequency chain grid-connected inverter, the low-frequency current ripples in output current of a photovoltaic module can be effectively restrained.

The invention discloses a detection system of visible foreign matters. The detection system comprises a light source device, a detection observation device and a swing arm clamping device. The detection system adopts the lamp detection method principle, checks samples in polarized light and removes fatigue of human eyes. A swing arm mechanism simulating human hand actions is adopted so that action consistency is kept and guarantee is provided for result reproducibility. An observation window can be used for an operator to directly view the detection process, and a liquid crystal screen on the side of the observation window synchronously displays the process. An image collector is used for snap-shooting instant characteristics of the visible foreign matters, distinguishing image information in pictures and verifying accuracy of detection reports in picture mode. Therefore, influence of human factors on detection results is fundamentally removed.

The embodiment of the invention discloses a generation method of a question answering system, terminal equipment, a storage medium and the question answering system. The generation method comprises the steps of: obtaining a graphical question answering flow chart; generating a standardized code framework matched with the question answering flow chart according to graphic components contained in the question answering flow chart, wherein the graphic components comprise trading nodes which are associated with service interfaces for performing services in set types; generating custom codes whichare respectively corresponding to the graphic components and adding to positions, associated with the graphic components, in the standardized code framework according to custom configuration information matched with the graphic components in the question answering flow chart; and adding topic knowledge points corresponding to the question answering process modules into a knowledge base. Through the scheme of the embodiment of the invention, the fast call of an existing function or service is realized; the repeated writing or transplantation of codes for realizing the same function is avoided;the conciseness of implementation codes of the question answering system is guaranteed; and the rapid construction and update of the question answering system are realized.

The invention provides a method and a device for mapping from an indication channel PHICH which has physical mixture and can automatically request for retransmission to a physical subcarrier, and the method comprises a time domain mapping step that on a time domain, when the PHICH duration is three OFDM symbols, each OFDM symbol is mapped with one resource; when the PHICH duration is two OFDM symbols, by using two continuous PHICH groups as a period, one resource group is mapped to the first OFDM symbol by the first PHICH group, and two resource groups are mapped to the second OFDM symbol by the first PHICH group, while two resource groups are mapped to the first OFDM symbol by the second PHICH group, and one resource group is mapped to the second OFDM symbol by the second PHICH group. The invention ensures the diversity gain of PHICH and the simplicity for implementing PHICH, and at the same time, the invention has little influence on the performance of other downlink physical channels.

The embodiment of the invention provides a method for displaying applications and a mobile terminal. The method includes the steps that the use frequency of all the applications of the mobile terminal is acquired; an operating hand of a user for operating the mobile terminal is detected; the applications in a shortcut launch bar and the display sequence of the applications in the shortcut launch bar are adjusted according to the use frequency and the operating hand. The method is used for solving the problems that in the process of manually adjusting the setting of the shortcut launch bar by the user, operation is complex, and the experience effect is poor.

The invention discloses a characteristic encoding method for recognizing digital image content, and relates to the technical field of signal and information processing. The method comprises the following steps: dividing an input image characteristic sequence into characteristic vectors with fixed length; acquiring sparse description of each characteristic vector by utilizing a sparse code; extracting an atomindex with the maximum weight from the sparse description of each characteristic vector; performing binaryzation processing for the index sequence; creating an atomic weight histogram; performing binaryzation processing; combining the binary sequences produced by the atomindex and atomic weight histogram to form image hash. With the adoption of the method, the characteristic vector of the image can be mapped to be a simple and short binary hash sequence, and the calculation complexity is small; in addition, the produced image hash is able to resist the content distortion caused by the image processing, and thus the image content can be efficiently and accurately recognized.

This invention relates to a method for increasing safety of hand call short messages which is first of all to judge if the ' short message cipher' function is on or off when accepting the request for operation to the short message input by a user, if it is 'off', then it allows the required operation, if it is 'on', it prompts the user to input the ciphered code and accepts it and to compare it with the preset one, if it's correct, it permits the required operation, if it's wrong, then it refuses the required operation. As an optimum optional example, the ciphered code of this invented short message cipher is that of a hand call. Since a user should input the set ciphered code when entering into the short message function and he can use the function only after the ciphered code is right.

The embodiment of the invention discloses a screen transmission processing method and device, equipment and a storage medium. The method comprises: determining that a source device is connected to a screen transmission device, the screen transmission device being used for being in communication connection with a target device paired with the screen transmission device, and determining that a screen transmission client is installed in the source device; determining that the screen transmission client is in a to-be-updated state; in response to the to-be-updated state, obtaining an update file of the screen transmission client from the target device through the screen transmission device; and updating the screen transmission client according to the update file. A program is burnt in screen transmission equipment; wherein the updating module is used for acquiring an updating file of a screen transmission client from target equipment and updating the updating file to source equipment. Thescreen transmission client is not burnt in the screen transmission device, the size of the screen transmission client is not limited by the storage space of the screen transmission device, the storagespace of the target device is generally far larger than the size of the screen transmission client, new functions of the screen transmission client can be continuously developed, and the performanceof the screen transmission client is guaranteed.

The invention relates to the technical field of image processing and mode recognition, and discloses a face feature point detection method based on ASM. The method also describes extra features of face feature points on the basis of traditional ASM algorithm. Specifically, the method describes HOG information of neighborhood in addition to local texture features, combines a HOG feature vector with a texture feature vector to form a feature descriptor which can provide higher resolution. Therefore, the method can fast and accurately select candidate feature points, and effectively increase the speed and precision of face feature point detection.