42results about How to "Not easy to attract attention" patented technology

The invention provides an antenna device comprising a first radio frequency transceiver circuit, a first matching circuit, a housing, and a frequency modulation element. The housing includes a first side and a conductive area with a micro-slit tape formed by a plurality of micro slits; the micro-slit tape is adjacent to the first side of the housing; and the opening of the micro-slit tape is arranged on the first side of the housing. The first radio frequency transceiver circuit is connected with the conductive area electrically by the first matching circuit. The frequency modulation element is connected between the conductive area and the ground. In addition, the invention also provides terminal equipment. According to the invention, the overall appearance effect of the terminal equipment can be guaranteed; and the adverse effect on the antenna performance by hand holding by a user can be reduced.

The invention belongs to the field of encryption communications of an optical fiber web, and discloses an optical fiber web encryption communication system based on a time hidden signal channel. A sender sorts obtained time sequence value, the time sequence value after sorted is divided into groups, the sender conducts one-to-one correspondence on data to be sent and the time sequence value which is sorted and divided into the groups, the sender controls sending rate, and a receiver conducts decoding. Compared with the prior art, the optical fiber web encryption communication system has the obvious advantages of hiding information which is not easily observed by an observer, not enabling carrier data to generate big changes, not easily attracting attention of an aggressor, being strong in anti-jamming capability, and being capable of well keeping integrity and reliability of information.

The invention provides a shell which is used for a mobile terminal. The shell comprises a first conductive area. The first conductive area is provided with a first micro seam band and a first seam. The first micro seam band comprises multiple first micro seams. The first seam is intersected with the multiple first micro seams. According to the shell, the overall appearance effect of the mobile terminal can be guaranteed, and transmitting and receiving of high-frequency signals and GPS signals can also be realized. The invention also provides an antenna device and the mobile terminal.

The invention provides an antenna device for a mobile terminal. The antenna device comprises first radio-frequency receiving and transmitting circuit, a first matching circuit, a second radio-frequency receiving and transmitting circuit, a second matching circuit and a shell, wherein the shell comprises a first conducting region; the first conducting region is provided with a first micro-gap strip and a first gap; the first micro-gap strip comprises a plurality of first micro-gaps; the first micro-gap is intersected with the plurality of first micro-gaps; the first radio-frequency receiving and transmitting circuit is electrically connected with the first conducting region through the first matching circuit; and the second radio-frequency receiving and transmitting circuit is electrically connected with the first conducting region through the second matching circuit. According to the antenna device provided by the invention, the overall appearance effect of the mobile terminal can be ensured; and meanwhile, receiving and transmitting of a high-frequency signal and a low-frequency signal can be achieved. The invention further provides the mobile terminal.

The invention discloses a concealed protective anti-theft anti-riot casement window without a guardrail. The concealed protective anti-theft anti-riot casement window without the guardrail is characterized in that an anti-theft frame is arranged at the periphery of a window frame, a protective convex edge is arranged at the inner edge of an outdoor side of the anti-theft frame, and the window frame is embedded in the anti-theft frame and is mutually fastened and connected with the anti-theft frame by using bolts. The concealed protective anti-theft anti-riot casement window with the guardrail has the advantages that the anti-theft frame can be accurately fixed, when in use, firstly the anti-theft frame is arranged in a window of a wall, then the embedded window frame is fixed by the anti-theft frame, and the anti-theft frame and the window frame are sequentially and successfully arranged and do not need to rework, thereby greatly increasing the operating efficiency and installing accuracy; a gap between the anti-theft frame and the window frame is covered by the protective convex edge arranged at the inner edge of the outer side of the anti-theft frame, and therefore, the protective convex edge has the pry-proof effect; the strength and the anti-impact property of the window frame are increased through steel pipes and energy absorption materials in the window frame; a glass film composite layer is used for effectively preventing thieves from breaking up or gashing glass to enter a room and has the functions of anti-theft, temperature preservation and heat insulation; and stoppers and hinges of window sashes are also used for increasing the strength and anti-theft performance.

A reliable network steganography method based on IP source address, which mainly consists of three parts: preparation process, embedding process and extraction process. A service node is set to record the basic information and communication status of both parties in communication, and both parties use different IP source addresses. The type represents the binary digits "0" and "1", and the service node completes the auxiliary confirmation of the integrity of the secret message and realizes the reliable transmission of the secret information. The advantages are: the entire steganography process only hides the secret message by classifying the source address field of the data packet, and chooses to use the IP address that exists in the public network. It actually exists in the network, so it is not easy to attract the attention of the attacker; the service node is A network node independent of the receiver and sender of a secret message to record the state used for covert communication to ensure reliable communication. The sender and receiver of the secret message do not communicate directly, so that the attacker cannot detect the communication process between the two, which helps to improve the concealment.

The invention provides a method for carrying out secret communication by using a word document. The method mainly comprises the following three steps of: manufacturing secret characters by using a True Type character-formation program and generating a secret key; embedding the secret characters into the word document; and extracting the secret characters by using the secret key. According to the method disclosed by the invention, the True Type character-formation program in the conventional general windows operation system, display characters of a window word base and certain functions of word character processing software are designed and integrated so as to realize a function of performing the secret communication by using the word document. The method disclosed by the invention has the advantages of smart conception, simple method, low cost, good commonality and easiness of operation. Therefore, the method can be accessibly used by any operator familiar with windows.

The present invention provides a method and device for generating a directional attack adversarial patch. The method adopts a plurality of consecutive white-box models with different structures to iteratively update the adversarial patch, so that the obtained target general adversarial patch can be better for the black-box model with unknown structure. attack effect. By introducing the triplet loss, the success rate of the output target category can be improved during the directed attack. By introducing the attention shift loss, the migration effect of the target general adversarial patch to the model attention area can be improved, so as to greatly improve the directional attack effect of the target general adversarial patch. By introducing a smoothing loss, it is possible to reduce the gap between the pixel points of the target common adversarial patch, which is not easy to attract the attention of the human eye. Furthermore, by adding anti-patches, targeted attacks can be carried out at the physical and digital levels at the same time, which is easier to implement.

The present application provides a method, device and system for anti-cheat. The method includes: monitoring the preset detection points inside the game application, and obtaining the The plug-in feature information; when the game stage is over, according to the plug-in feature information and the normal game data information corresponding to the game stage, generate the anti-cheat game data information corresponding to the game stage; The anti-cheat game data information is sent to the first server, so that the first server determines the Whether there is cheat feature information in the anti-cheat game data information. According to the solution of the present application, the use of a deceptive and concealed anti-cheat mechanism can greatly increase the difficulty for a cheat developer to forge data packets.

The present invention provides an antenna device, comprising a radio frequency transceiver circuit; a matching circuit electrically connected to the radio frequency transceiver circuit; The seam belt, the at least one micro-slit belt includes an arc portion, the arc portion matches the arc segment of the metal casing, and the radio frequency transceiver circuit is electrically connected to the metal casing through the matching circuit connected, so that the metal casing is used as a radiator of the antenna device, wherein the metal casing is grounded through a ground wire, and a switch for controlling the on-off of the ground wire is provided on the ground wire. The antenna device according to the present invention can ensure the overall appearance effect of the mobile terminal, and at the same time prevent the signals of the antenna device from being interfered and improve the bandwidth of the antenna device. The invention also provides a mobile terminal.

The invention discloses a street sign recognition confrontation defense method based on multi-objective road optimization, comprising: (1) constructing a training set, a test set and a confrontation set; (2) constructing a street sign classifier, and using the training set and the test set to compare The classifier is trained to obtain the street sign recognition model; (3) Construct the street sign attack model according to the particle swarm optimization algorithm, and use the street sign attack model to generate confrontation samples; (4) Correct the confrontation samples, apply the confrontation samples to the physical scene, and then collect the confrontation samples. The physical image of the sample; (5) Input the physical image of the adversarial sample into the street sign recognition model, and screen high-quality adversarial samples; (6) Add the high-quality adversarial samples to the training set, and use the training set to retrain the street sign recognition model , to realize the optimization of the adversarial defense of the street sign recognition model; (7) use the street sign recognition model optimized by the adversarial defense to recognize the street sign image, so as to realize the adversarial defense of the street sign recognition.

The invention belongs to the technical field of computer network and information security, and mainly discloses a secret information transmission method under the P2P network based on the BitTorrent protocol. The secret transmission channel is established on the basis of the Handshake message transmission channel in the P2P network, relying on the established secret transmission method. channel, and embed the secret information into the BT keyword of the Handshake message for transmission by means of case-insensitive information encoding. The present invention introduces a case-insensitive information encoding method into the BT keyword of the Handshake message to implement secret communication. The secret information transmission method provided by the present invention is not only simple and efficient, but also has low implementation cost, and is more secure and reliable, and is not easy to be cracked.

The invention discloses a carrier-free text steganography method based on character features. Binary digits are expressed through the character features; secret information is processed into a binaryciphertext string and then is packaged and segmented; mapping between texts and binary ciphertext string segments is established by taking abundant webpage texts in a network big data environment as candidate carriers; corresponding texts are found for the secret information through the mapping relationship; and the texts or the corresponding URLs are sent, thereby finishing secret information interaction. After a receiving end receives the texts, the character features of a first text are analyzed to obtain head information; a binary ciphertext segmentation mode and length are determined; thefollow-up text character features are analyzed to obtain binary ciphertext segments; the segments are recombined to form the complete binary ciphertext string; and decoding or decryption is carried out to obtain the secret information. The method has the advantages of high stealthiness, high expandability and high embedded capacity, and the application and development of a steganography technology in various fields are facilitated.

Provided in the present invention is an antenna device, comprising: a radio frequency transceiver circuit; a match circuit, which is electrically connected to the radio frequency transceiver circuit; and a metal cover, which is provided with at least one band of micro seams. The radio frequency transceiver circuit is electrically connected to the metal cover by means of the match circuit, such that the metal cover is used as a radiating body of the antenna device. The metal cover is grounded by means of a grounding wire, the grounding wire being provided with a switch thereon for connecting / disconnecting the grounding wire. The antenna device according to the present invention can guarantee the overall appearance of a mobile terminal, and meanwhile, can prevent signals of the antenna device from being interfered and improve the bandwidth of the antenna device. Further provided in the present invention is a mobile terminal.

The invention discloses a concealed information transmission method and transmission system based on biological sound, and the method comprises the steps: 1, enabling a transmitting end to collect a biological sound pulse signal x(t), and extracting an envelope es(t); 2, acquiring the time range of each biological sound pulse in es(t); 3, when an i-th code element to be sent is B1, embedding an identification signal into an i-th biological sound pulse signal xi(t) in the x(t), and when the i-th code element to be sent is B2, performing no processing on the xi(t) signal; 4, enabling the transmitting end to send out the processed biological sound signal; 5, extracting an enveloper(t) from a received biological sound signal y(t) by the receiving end, and obtaining the time range of each biological sound pulse; 6, judging whether embedded information exists or not for each biological sound pulse yj(t) in the y(t): if the embedded information exists, determining that the j-th code element sent by the sending end is B1. According to the method, the requirement for transmitting the hidden information in a specific occasion can be met, and the probability that the secret information is intercepted and captured is reduced through the hidden communication behavior.

The present application discloses a voice encryption method and a voice sending terminal. The method is applied to the voice sending terminal. The method includes: judging whether the user wants to start dictating character string information during a call; if so, start an encryption algorithm The character string information dictated by the user is encrypted into another character string information; the encrypted character string information is input into the mobile communication network, thereby improving the security of the voice communication.