Abstract: A device and a method and a non-transitory readable storage medium, for face recognition are provided, the method comprise: extracting a face sample image from a predetermined face sample library and performing feature point detection to obtain multiple face feature points; obtaining multiple mask images; selecting first to fourth face feature points from the multiple face feature points; defining a distance between the first and second face feature point as a mask image height, and defining a distance between the third and fourth face feature point as a mask image width; adjusting a size of each mask image according to the mask image height and the mask image width; fusing each adjusted mask image with the face sample image to obtain multiple face mask images to save into the predetermined face sample library; training a face recognition model based on the predetermined face sample library for face recognition.

Abstract: A dual-frequency and dual-polarization antenna for simultaneously transmitting and receiving dual-frequency 5G signals comprises: a first substrate; a first polarization antenna comprising a first radiation portion disposed on a first surface of the first substrate and a second radiation portion disposed on a second surface of the first substrate; a second polarization antenna comprising a third radiation portion disposed on the first surface of the first substrate and a fourth radiation portion disposed on the second surface of the first substrate; a second substrate located in a side of the second surface of the first substrate, a surface of the second substrate close to the first substrate is a copper-clad surface; and layout directions of the first polarization antenna and the second polarization antenna are orthogonal to each other in the first substrate. An electronic device comprising the dual-frequency and dual-polarization antenna is also provided.

Abstract: A conductive pattern has been disclosed. The conductive pattern includes a pair of conductive traces. Each of the conductive traces comprises a linear portion and a terminal portion. The terminal portions are arranged adjacent to each other and comprises a pair of circular arc profile with a pair of complementary notches facing toward each other.

Abstract: A dual-frequency and dual-polarization antenna for simultaneously transmitting and receiving dual-frequency 5G signals comprises a first substrate; a first polarization antenna comprising a first radiation portion disposed on a first surface of the first substrate and a second radiation portion disposed on a second surface of the first substrate; a second polarization antenna comprising a third radiation portion disposed on the first surface of the first substrate and a fourth radiation portion disposed on the second surface of the first substrate; a second substrate located in a side of the second surface of the first substrate, a surface of the second substrate close to the first substrate is a copper-clad surface; and layout directions of the first polarization antenna and the second polarization antenna are orthogonal to each other in the first substrate. An electronic device comprising the dual-frequency and dual-polarization antenna is also provided.

Abstract: A device for detecting household conditions and events includes a power supply portion and a plurality of portions able to detect different conditions, or changes in different conditions. Each detecting portion includes an input port and an output port, the output port of one detecting portion is detachably electronically connected to the power supply portion, and the input port of one detecting portion is detachably electronically connected to the output port in a modular fashion of another detecting portion, the remote selection of a specific required detection is also provided.

Abstract: An apparatus having stacked circuit boards has been disclosed. The apparatus includes a main circuit board and a sub circuit board disposed over the main circuit board. A plurality of sub components disposed on a bottom face of the sub circuit board penetrates through main circuit board and extends towards a bottom face of the main circuit board. In this say, a compact apparatus is produced.

Abstract: A power switching device for switching power between translational motion and rotational motion includes an active gear, a transmission mechanism, a translation mechanism, a functional gear, and a reset mechanism. The active gear can rotate in a first direction or a second direction opposite the first direction. The translation mechanism includes a runner and a pushing member. The active gear can switch between a first position and a second position. In the first position, the active gear meshes with the runner and rotates in the first direction or the second direction to drive the runner to rotate. In the second position, the active gear meshes with the transmission gear and rotates in the second direction to drive the functional gear to rotate.

Abstract: A locking assembly for a Kensington-locked enclosure can be simply padlocked for security. The locking assembly includes a first connecting member and a second connecting member. The first connecting member is fixed on a base body of the enclosure, the first connecting member comprises a first tongue piece. The second connecting member is fixed on an upper cover of the enclosure, and the second connecting member comprises a second tongue piece. The first tongue piece and the second tongue piece protrude from an outside of the enclosure and fit each other, and a padlock can pass through the first tongue piece and the second tongue piece to lock the base body and the upper cover together and secure the attachment of the Kensington lock.

Abstract: An enclosure for a computer proofed against being accidentally opened includes a cabinet and a cover plate, the cabinet defines a first chute, the cover plate includes a first hook structure, the first hook structure cooperates with the first chute to cover the cover plate on the cabinet. The cabinet defines a groove in the first chute, the first hook structure comprises a locking portion, and the locking portion is used to engage with the groove.

Abstract: A chassis welding device for welding brackets as standard members to a body of a chassis includes a frame, a first transferring member, a plurality of loading mechanisms, a plurality of carriers, a conveying member, a shifting member, and a spot welder. The loading mechanism transfers standard members to individual preset positions on the carrier to face the solder joints on the standard members away from the carrier. The first transferring member transports the carrier to the shifting member. The shifting member transfers the carrier from the first transferring member to the spot welder. The conveying member transfers the body into contact with the solder joints. The spot welder applies heat to melt the solder joints to bond the standard members to the body.

Abstract: An object recognition system is disclosed. The object recognition system includes an input device configured to obtain image data and a Radio Frequency Identification (RFID) data of an object, a processing device connected to the input device, and configured to perform a model training procedure, wherein the model training procedure includes capturing an object feature according to the image data, generating a classification data corresponding to the object according to the object feature, verifying a correctness of the classification data according to the RFID data, and generating a deep learning model according to the verified classification data, to regenerate the classification data, and an output device connected to the processing device, and configured to generate an object recognition data corresponding to the object according to the classification data generated by the deep learning model and the RFID data.

Abstract: An apparatus having stacked circuit boards has been disclosed. The apparatus includes a main circuit board and a sub circuit board disposed over the main circuit board. A plurality of sub components disposed on a bottom face of the sub circuit board penetrates through main circuit board and extends towards a bottom face of the main circuit board. In this say, a compact apparatus is produced.

Abstract: A computer host system includes a housing and at least one of a top expansion frame and side expansion frames. The housing includes a front panel, a rear panel, a top panel, and side panels. The top panel and the side panels are detachably installed respectively on top and both sides of the front and rear panels. The top expansion frame is installed on top of the front and rear panels to expand an accommodating space at a top portion of the housing. The side expansion frames are installed on both sides of the front and rear panels and used to expand an accommodating space on both sides of the housing. The top expansion frame has a same cross-sectional shape as the top portion of the housing, and the side expansion frame has a same cross-sectional shape as a side of the housing.

Abstract: A hard disk carrier includes a tray bracket and a turnover bracket rotatably arranged on the tray bracket. The tray bracket includes a first side wall, a second side wall parallel to the first side wall, and a bottom wall connecting the first side wall and the second side wall. wherein The turnover bracket includes two turnover arms rotatably arranged on the bottom wall between a first angle at which the turnover arms being received in the bottom wall and a first receiving space is defined between the first side wall and the second side wall and a second angle at which the turnover arms turns out from the bottom wall and a second receiving space is defined between the two turnover arms. A size of the second receiving space is different from that of the first receiving space.

Abstract: A conference recording method is provided. The method includes obtaining a multimedia file corresponding to a conference, the multimedia file includes video data and audio data. Posture language of each person is recognized from the video data. Facial features and voice features of each person are extracted from the multimedia file. Personal identity information of each person is identified according to the facial features and the voice features of each person. Once the audio data corresponding to each person is converted into text information, the posture language, the personal identity information, and the text information corresponding to each person are output.

Abstract: An arrangement to guarantee boot up of a computer includes a control center microchip with BIOS boot block and BIOS program, and a flash memory divided into a first protected block, a main block, and a second protected block. In the computer, an embedded controller (EC) with stored modules is electrically connected to the flash memory and the control center microchip. The modules include a determining module to check that the code of the first protected block is identical with the code of the second protected block and a recovery module able to reinstate correct code from the second protected block into the first protected block if required. A method applied to the disclosed computer startup detection system is also disclosed.

Abstract: A power switching device includes a translation mechanism, an active mechanism, and a transmission mechanism. The translation mechanism includes a rack. The active mechanism includes an active gear and a driver. The active gear connects with a first functional mechanism, and the driver drives the active gear to rotate in a first direction or a second direction. The transmission mechanism connects with a second functional mechanism. The active gear is switched between a first position and a second position. In the first position, the active gear is connected to the transmission mechanism and rotates in the first direction to drive the transmission mechanism to rotate, thereby driving the second functional mechanism to operate. In the second position, the active gear meshes with the rack and rotates in the first direction or the second direction to reciprocate on the rack so as to drive the first functional mechanism to operate.

Abstract: The present disclosure provides a fixing device for fixing an external electronic component on a motherboard in a chassis. The fixing device includes a fixing block and a telescopic block. The fixing block is fixed on the chassis. One end of the telescopic block is slidably mounted in the fixing block, the other end protrudes from the fixing block and holds the electronic component. A chassis including the above-described fixing device to hold electronic components of different sizes is also provided.

Abstract: A method for deriving further and additional pictures from an original picture, for Artificial Intelligence (AI) training purposes, is applied in a device. The device establishes an original picture set and sets the original pictures as a training picture set for AI training. The original pictures are rotated or flipped or both to obtain amplification pictures. The original pictures are annotated, and each of the amplification pictures is annotated according to a preset conversion rule. The original pictures, the amplification pictures, the annotated original pictures, and the annotated amplification pictures are stored, for inclusion in the AI training picture set.

Abstract: A method for recognizing, identifying, and authenticating persons to be identified from their faces in a preset scenario, includes uploading a first image of users to a server, and receiving the first image on which first facial rectangles and user information have been imposed, and capturing a second image and detecting second facial rectangles therefrom. The method determines whether a number of faces of the second image is equal to a number of faces of the first image, and uploading the second image to the server for identifying third facial rectangles of the second image. A plurality of distances is obtained by calculating at least one distance between third and second facial rectangles of each user shown in the second image and determining whether the users shown in the second image are the same as users shown in the first image based on the plurality of distances.