106results about How to "Prevent detection" patented technology

The disclosure reveals a voiceprint identification method and device, and belongs to the voiceprint identification technical field; the voiceprint identification method comprises the following steps: obtaining a sound signal collected by a microphone, and obtaining a voiceprint characteristic of the sound signal; matching the voiceprint characteristic with a stored sample voiceprint characteristic, wherein the sample voiceprint characteristic is the voiceprint characteristic of a terminal valid user; if the obtained voiceprint characteristic is not matched with the sample voiceprint characteristic, sending prompt information to a notified party set by the valid user. In the prior art, a terminal unlocking code can be easily sensed and decrypted by an invalid user, thus causing the terminal to be lost or the terminal cannot be retrieved; the voiceprint identification method and device solve said problems, can identify invalid users, and can timely inform the terminal valid user.

The invention discloses a cabinet door control alarm, which comprises a main control circuit, a power source and cabinet door state detection circuit, a motor lock motor driving circuit, an alarm input-output circuit, an alarm circuit and a multimedia message module integrated circuit (IC7), wherein the main control circuit is used for controlling each circuit; the power source and cabinet door state detection circuit is used for supplying a power source to the circuits and detecting an opening and closing state of a cabinet door; the motor lock motor driving circuit for supplying a power source started or shut down to a motor lock motor and enabling a motor lock to move towards the opening or closing direction; the alarm input-output circuit is used for collecting each alarm signal and giving out alarm command; and the alarm circuit is used for sending out sound and light to give an alarm and sending out the alarm signal to users near the cabinet door. The multimedia message module IC7 is used for achieving remote connection between the cabinet door control alarm and a cabinet door controller and enabling the cabinet door controller to know about the state of the cabinet door control alarm and achieve remote control of the cabinet door control alarm. The cabinet door control alarm can carry out remote control and remote alarm to the cabinet door, multiple unlocking secret-key control is adopted, and the safety performance of a cabinet door control system is greatly improved.

The invention discloses a rendering control method, a rendering control device and a mobile terminal. The method comprises the following steps of promoting a refresh rate value of a front camera to a preset target refresh rate value from a default refresh rate value when the mobile terminal opens a virtual reliability application; figuring out a fine rendering region according to the target refresh rate value obtained after promotion and the current point of regard of a user on a screen of the mobile terminal in order to carry out fine rendering on pixel points in the fine rendering region; carrying out normal rendering processing on other regions outside the fine rendering region; and lastly, presenting a rendered picture to the user on the screen. The invention has the following beneficial effects that the precise rendering region is determined by the target refresh rate value which can be better adaptive to the rapid eye movement than the existing fixed refresh rate value, the obtained precise rendering region can better cover the visual range of the user, the user is prevented from perceiving a rough rendering picture outside the fine rendering region during the rapid eye movement, and the visual perception and the satisfaction of the user are improved.

A detection device that detects existence of a radio wave transmitting / receiving body inside a specific space has a first antenna, a second antenna, a controller that controls a first detection signal and a second detection signal that the first antenna transmits to an inside of the specific space, and a disturbing signal that the second antenna transmits, a third antenna that receives a response signal transmitted to the first detection signal and the second detection signal, which have been received by the radio wave transmitting / receiving body, and a determination unit that determines an existence position of the radio wave transmitting / receiving body, based on the response signal received by the third antenna.

The invention discloses a loading system for a DLL (Dynamic Link Library) file and relates to the technical field of communication. The loading system comprises a read-write module, a resolving module, a re-positioning module, an address table-loading filling module and an inlet function execution module, wherein the read-write module is used for reading the DLL file into a memory; the resolving module is used for resolving a file header of the DLL file and judging whether the DLL file is a legal DLL file or not; the re-positioning module is used for acquiring the address of the re-positioning table through a format of the DLL file, and re-positioning the re-positioning items according to the address of the re-positioning table; the address table-loading filling module is used for acquiring the loaded address table through the format of the DDL file, and filling a real address of a to-be-loaded function; and the inlet function execution module is used for acquiring an inlet function through the formation of the DLL file, and executing the inlet function. The invention discloses a method for loading the DLL file based on the loading system for the DLL file.

The invention relates to the technical field of internet information, and discloses a risk control decision method, computer equipment and a storage medium. The method comprises the steps that activedata and structured data are received from a client, the active data comprise data submitted by a user, the structured data comprise data obtained by structured processing of interactive data and / or passive data by the client, the interactive data comprise user operation actions, and the passive data comprise client information; verifying the active data, analyzing the structured data, and storingthe verified active data and the analyzed data in a database; based on a portrait model in a portrait model library, generating user feature data according to the verified active data and the analyzed data to establish a user portrait of the current user; generating a risk control result according to the user portrait based on a risk control decision engine; and responding to the service requestof the client according to the risk control result. The risk control decision can be better realized based on big data, machine learning and the like.

A system that detects vibrations from a mechanical component, such as a disk drive. The system includes an excitation rod, a membrane, and a microphone. During operation, the mechanical component is coupled to the excitation rod which is coupled to the membrane, so that vibrations from the mechanical component are mechanically coupled through the excitation rod to the membrane. The membrane then converts the mechanical vibrations into acoustic waves that are transmitted through a medium. The microphone detects the acoustic waves in the medium and converts the acoustic waves into signals.

A method of dividing a wafer having a plurality of devices, which are formed in a plurality of areas sectioned by streets formed in a lattice pattern on the front surface, and having test metal patterns which are formed on the streets, comprising the steps of: a laser beam application step for carrying out laser processing to form a dividing start point along a street on both sides of the test metal patterns by applying a laser beam along the street on both sides of the test metal patterns in the street formed on the wafer; and a dividing step for dividing the wafer which has been laser processed to form dividing start points along the dividing start points by exerting external force to the wafer, resulting in leaving the streets having the test metal patterns formed thereon behind.

In a television recording apparatus having a storage unit capable of storing recordings of television signals, during reproduction of a recording, an analysis of the reproduced television signal is performed to detect a credits sequence of a program. Responsive to input of a command to cease reproduction before the end of a recording, in the event that the command is input after the detected credits sequence, then the recording is deleted or there is displayed a graphical interface providing for user input to indicate a desire for deletion of the recording or not.

The invention provides a communication method of a wireless mesh network (MESH) and a movable access point (MP). When the signal quality of a fixed MP received by the movable MP is larger than or equal to the preset saturation signal quality, a MESH link between the movable MP and the fixed MP is entered into the saturated status, and the connection status of the MESH interlinkage is remained without being removed, so that the MESH interlinkage can enter into the unsaturated status after the saturation interval and can be fast switched to be a main link under the situation that a switching condition is met, thereby preventing from the detecting and negotiating time consumed by rebuilding the MESH interlinkage of the fixed MP and guaranteeing the data transferring quality. Furthermore, a main interlinkage is always selected in the MESH interlinkage under the unsaturated status, namely, the MESH interlinkage of the saturated status has to be switched into the standby interlinkage to be further switched into the main interlinkage, thereby effectively preventing the main interlinkage from being frequently switched.

The invention relates to a cache decision method for privacy protection of named data network based on k-anonymity. The cache decision is only made at a node where a user sends a request, and a neighboring node to which the cache is to be cached is determined by the cache replacement rate of the node. Even if an attacker can know that someone has accessed the content recently, the attacker can notinfer which user accessed the content recently through which router because of the caching cooperation in the area, so the attacker can avoid detecting the privacy information of the requester, and the privacy of the requester can be effectively protected. Furthermore, the cache privacy is protected by extending the user anonymous area through neighbor cooperative caching. The router does not need to construct the anonymous area, and does not need to search the data in the anonymous area, which reduces the implementation difficulty of the anonymous area and the time delay for local users to obtain the data.

The invention belongs to the technical field of visual SLAM processing technology and mobile chassis navigation path planning, and particularly relates to an active visual SLAM system based on a panorama camera, which comprises an intelligent chassis module, a panorama camera module, a camera dynamic bracket, a monocular camera module and a processor; the processor comprises an evaluation module, a visual SLAM processing module, a global planning module, a local path planning module and a dynamic support planning control module. By adding the intelligent chassis module capable of doing curvilinear motion at any radius, the monocular camera module installed on the multi-degree-of-freedom camera dynamic support and the panoramic camera module used for evaluating the whole environment, the problem that traditional visual SLAM mapping scanning is not purposeful is solved. According to the invention, visual mapping and positioning are more purposeful, the mapping and positioning speed is increased, the mapping and positioning quality is improved, and the mapping and positioning reliability and flexibility are enhanced.

The invention discloses a micro-thermal sound transducer and a preparation method thereof. The sound transducer comprises a thermal insulation substrate structure, a heating unit and a heat sensitiveunit. The heating unit and the heat sensitive unit are adjacent to each other and are arranged on the thermal insulation substrate structure. The heating unit is used for providing a local temperaturefield; and the heat sensitive unit is configured to detect a temperature change, caused by sound wave propagation, of the local temperature field and convert the temperature change into an electricalsignal or optical signal. Therefore, the sound pickup effect can be effectively improved.

The application relates to a SDN-based network topological structure discovery method and device, a computer readable storage medium and computer equipment. The method comprises the following steps: acquiring a SDN topological structure template produced when creating virtual network equipment; determining the virtual network equipment recorded in the SDN topological structure template; acquiringa network address corresponding to the determined virtual network equipment; sending a first detection instruction according to the network address, wherein the first detection instruction is used forindicating a physical server corresponding to the network address to send a first detection packet to the determined virtual network equipment; and judging that the virtual network equipment on the physical server is existent in the network topological structure when receiving a first reply packet for the first detection packet fed back by the physical server in the preset time slot. Through thescheme provided by the application, the network topological structure discovery efficiency can be improved.

The invention discloses a real-time image superposition method and device for augmented reality (AR). The method includes the following steps: acquiring video information generated when a monocular camera photographs a preset scene in real time, and determines the key frames in the video information; establishing point cloud data in real time according to the current key frame and the key frame previous to the current key frame; projecting the point cloud data corresponding to the current key frame to the current key frame, and determining the planes in the current key frame and the longest edge line in each plane according to the projection result and the super pixel segmentation result of the current frame; and when superposing a virtual image onto a first plane in the current key frame,fitting the fitting faces of the main features in the virtual image into the first plane, and making the forward edges of the main features parallel or perpendicular to the edge lines of the first plane through setting. Visual experience of the AR technology can be provided for users without the need to digitize a real environment in advance, and the real-time performance is strong.

A system includes one or more processors configured to detect activation of an alarm trigger in communication with the one or more processors. The processors are further configured to determine a type of trigger and provide a subtle feedback response, based on the type of trigger, designed to avoid detection by an assailant. The processors are additionally configured to wirelessly contact an emergency responder and provide data usable in determining a vehicle location and a vehicle identification.

The invention relates to a face recognition anti-theft device. The anti-theft device comprises a body infrared sensing module, a camera data acquisition module, a face recognition module, a control module and an alarm module, and the body infrared sensing module, the camera data acquisition module, the face recognition module, the control module and the alarm module are connected. According to theface recognition anti-theft device, with functions of night surveillance, shield alarming and signal interrupt alarming, a micro camera is arranged. According to the face recognition anti-theft device, a face recognition system is adopted for judging collected images, thus, the precision of alarming is significantly improved, and at the same time, facial features of criminals can also be clearlycaptured for police to use. According to the face recognition anti-theft device, the body infrared sensing module is added, and therefore only when a person approaches an oil tank can the camera be started to acquire the images by a controller, the service life of the camera can be prolonged, and the energy is conserved. According to the face recognition anti-theft device, an alarm system and a vehicle-mounted alarm system are connected, and thus, the face recognition anti-theft device is simple and high in practicability.

The invention discloses a real-time image superposition method and device for augmented reality (AR). The following technical scheme is adopted: when a monocular camera photographs a preset scene in real time, the planes in the current key frame and the longest edge line in each plane are determined; and when a virtual image is superposed to a first plane in the current key frame, the fitting faces of the main features in the virtual image are fitted into the first plane, and the forward edges of the main features are set to be parallel or perpendicular to the edge lines of the first plane. Therefore, visual experience of the AR technology can be provided for users without the need to digitize a real environment in advance, the steps before users experience the AR technology are avoided, the real-time performance is strong, and the scope of applications is greatly expanded. Meanwhile, the actual edge of the plane in a real environment is considered, and the authenticity of the main features in the virtual image is obviously improved.

A method and an apparatus for automatically controlling the brightness of a display unit in a mobile device according to external illuminance are provided. The brightness control method includes measuring a gradient of the mobile device, measuring an external illuminance through at least one of an illuminance sensor and a camera, depending on the measured gradient of the mobile device, and regulating the brightness of the mobile device, based on the measured external illuminance.

Method for detecting defects (22) in an object (20) comprising the steps of locally illuminating (10) the object (20) by radiating in light (50) having a wavelength to which the object (20) is transparent, detecting (12) multiply reflected components of the incident light (50) whilst at least partly avoiding the detection of directly transmitted components (48) of the incident light and at least partly avoiding the detection of singly reflected components (53a, 53b) of the incident light (50), and identifying (14) defects (22) by evaluating intensity differences in the detected components of the incident light (50), and device for carrying out the method.

In an error correction device, a frame generation section receives pulse signals as temperature information of a power switching element transmitted from a PWM comparator. The frame generation section sets a first correction pulse signal, a second correction pulse signal and the temperature information sequentially into each frame. A pulse width of the first correction pulse signal corresponds to a pulse width when a time ratio thereof becomes 100%. A pulse width of the second correction pulse signal corresponds to a pulse width when a time ratio thereof becomes 50%. A microcomputer receives the temperature information through a photocoupler and corrects the received temperature information. The microcomputer calculates a temperature detection value of the power switching element on the basis of the corrected temperature information.

The invention provides a method and system for preventing malicious codes from detecting virtual environments. The method comprises the steps of obtaining and analyzing malicious code samples to obtain judging conditions for judging the virtual environments; extracting parameters or data and an API interface used in the judging conditions; and hooking the API, obtaining parameters or data in the virtual environments, judging whether the parameters or the data in the virtual environments are same as the parameters or the data used in the judging conditions or not one by one, if yes, randomly modifying or generating new parameters or data according to the format of the parameters or the data to replace the original parameters or data, triggering and executing the related malicious codes. The invention also provides the corresponding system structure. Through the method provided by the invention, the virtual environments can be effectively prevented from being detected by the malicious codes.

A method of operating a single-tuner radio includes tuning into a first frequency. A pause in a first signal associated with the first frequency is detected. Tuning is switched from the first frequency to a second frequency. A signal quality metric for the second frequency is measured. Tuning is switched from the second frequency to the first frequency.

In a transporting device that transports a sheet of paper which is transporting on a first direction, a control unit has a detection-unit-cleaning mode in which when roller members move to a second direction, which is perpendicular to the first direction, to perform a correction of the positional deflection of the sheet of paper, the control unit controls the roller members to move the sheet of paper to an outside position from an image forming position and a position of the side end of the sheet of paper when the sheet of paper passes through the detection unit, and then to move the sheet of paper to the image forming position, based on the image forming position and the position of a side end of the sheet of paper, which is detected by a detection unit.

The invention provides a port scanning method, which comprises the following steps that: a client submits a target to be scanned to a control master node in a cloud platform; the control master node distributes a port scanning task to a plurality of working nodes in the cloud platform according to a simulated annealing algorithm; the working nodes perform port scanning on the target to be scanned, and calculate an optimal solution of a constrained parameter, which meets a requirement for an intrusion detection system on port scanning by using the simulated annealing algorithm; the working nodes feed a scanning result back to the control master node, and the control master node processes the scanning result and feeds the scanning result back to the client. The port scanning method can effectively combine and utilize resources of the cloud platform, the scanning efficiency is improved, and the simulated annealing algorithm is combined with the conventional port scanning technique, so that the concealment of the port scanning behavior is improved and the port scanning behavior can be effectively prevented from being detected by the intrusion detection system.

The invention discloses a quick-unfolding ammunition storage tent which comprises a first tent body with an opening in one end in the length direction. The first tent body comprises an outer tent bodyand an inner tent body which are detachably connected, the outer tent body and the inner tent body are matched in shape and size, air ribs integrated with the outer tent body are arranged between theouter tent body and the inner tent body, the air ribs are provided with inflation inlets, and the two ends of each air rib are each provided with fixing blocks; the outer tent body of the first tentbody is further provided with a first door curtain used for sealing the opening in the first tent body, and the outer side of the outer tent body of the first tent body is further detachably covered with an explosion-proof layer; and the quick-unfolding ammunition storage tent further comprises basin-shaped base cloth, and the base cloth is detachably connected with the inner tent body of the first tent body. The quick-unfolding ammunition storage tent is easy and convenient to install, modular construction is achieved, reliability is high, safety is high, the structure is simple, transportation is convenient, and the quick-unfolding ammunition storage tent is suitable for ammunition storage.

The invention discloses a multifunctional b ionic wave-absorbing metamaterial which is inspired by spiral structures of scarab carapaces and is suitable for various waves. The multifunctional b ionicwave-absorbing metamaterial comprises a plurality of unit layers, the adjacent layers are separated by a matrix, and periodically arranged structural units are distributed on each layer; each layer ofthe structural units is twisted by a certain angle relative to the structural units on the upper layer, the periodic size of the structural units is smaller than 15 mm and is adjustable, and the thickness of each layer of the matrix is smaller than 2 mm and is adjustable. Serious electromagnetic wave loss is generated after the structural units are twisted, so that the material microwave absorption performance is enhanced. The structural units are made of a high-entropy alloy prepared from five elements of Fe, Co, Ni, Si, Al and the like, has very strong dielectric loss and magnetic loss on electromagnetic waves, and has excellent corrosion resistance. The matrix material is an elastic foam material with a porous structure, and has multiple wave adaptability and multifunctionality of absorbing sound waves, ultrasonic waves and water waves, elastically deforming, resisting impact, preventing explosion and the like while the microwave absorption performance of the periodic units is notinfluenced.