Abstract: The disclosure relates to a test system for improving test stability. One end of the connection pin is fixed to a bottom surface of a corresponding pin socket, the bottom surface is near an end of the plug end, the other end of each connection pin is disposed in the corresponding pin socket and a portion of the other end of the connection pin protrudes from a top surface of an end of the plug end. The connection pin in the plug end will not be deformed by external force, which can avoid the deformation of the connection pin caused by external force, and ensure the electrical connection and test stability.

Abstract: The present disclosure provides an automatic chip testing system and method. The automatic chip testing system includes: a client, which is used to send a test instruction regarding the chip; a server, which includes a main board and a chip connected to it. The main board is used to receive the test instruction, convert the test instruction into a test file, and transmit the test file to the chip; the chip is used to trigger test items related to the test file after receiving the test file, the function test result of the chip is generated, and the function test result of the chip is shared to the client through the main board. The disclosure improves the reliability of the chip test result, and saves the test time.

Abstract: The present disclosure provides PCB wind tunnel test equipment. The PCB wind tunnel test device includes: a flow-stabilizing structure, which includes: a box used to provide flow channels for air entering the flow-stabilizing structure; flow-stabilizing plates, which are inserted into the cavities of the box in a layered manner; a wind source, arranged at an air inlet of the flow-stabilizing structure; a test device, arranged at the outlet of the flow-stabilizing structure. When the flow-stabilizing structure receives the wind energy provided by the wind source, the state of the air flow is adjusted by flow stabilization, so that the test device can test the air passing through the flow-stabilizing structure. The present invention solves the problem that conventional wind tunnels cannot test at low air volumes and enables PCB testing at different ambient temperatures.

Abstract: A bearing assembly configured to be disposed on casing of electronic device and including plate body, first damping component, second damping component, first fastener and second fastener. The plate body includes first mounting hole and second mounting hole. The first damping component is disposed in the first mounting hole. The first damping component includes first hole. The second damping component is disposed in the second mounting hole. The second damping component includes second hole. The first fastener is disposed in the first hole of the first damping component and configured to be fixed to the casing of the electronic device. The second fastener is disposed in the second hole of the second damping component and configured to be fixed to the casing of the electronic device. A hardness of the first damping component is greater than a hardness of the second damping component.

Abstract: A sound isolation window includes a frame and a plurality of sound blocking bars. The frame has an upper frame portion and a lower frame portion. The frame further has a first sidewall and a second sidewall connected to the upper and lower frame portion. The upper frame portion, the lower frame portion, the first sidewall and the second sidewall form a first opening and an opposite second opening. Each sound blocking bar includes a plane perpendicular to the upper frame portion and the lower frame. The sound blocking bars are arranged along the first direction from the first opening to the second opening and spaced apart from each other. Projections along the first direction of the sound blocking bars over the first opening cover the first opening. The width of each sound blocking bar is less than one-half of the width of the first opening.

Abstract: A test coverage rate improvement system for pins of tested circuit board and a method thereof are disclosed. In the system, partial pins of a circuit board connector in a tested circuit board are not electrically connected to the boundary scan chip, test pins of the test pin board are pressed with the partial pins by a fixture of a boundary scan interconnect testing workstation to electrically connect the test pins to the partial pins. A test access port controller receives a detection signal for detecting the partial pins, which are not electrically connected to the boundary scan chip, of the circuit board connector through the test pin board from the test adapter card, and determines whether conduction is formed based on the detection signal, thereby achieving the technical effect of improving a test coverage rate for the pins of the tested circuit board.

Abstract: A structural element fixing structure is provided. A flange of a first fixing element is connected with a side surface of a first shaft of the first fixing element. A first structure is fixed on the first fixing element. A second fixing element clamps the flange. An accommodating portion of the second fixing element is connected with a groove portion of the second fixing element. The accommodating portion has an accommodating space configured to accommodate the flange. A second shaft of the second fixing element is connected with the accommodating portion and is on a side of the accommodating portion facing away from the groove portion. A second structure is fixed on the second shaft of the second fixing element. The second fixing element separates the second structure and the first fixing element.

Abstract: A fastener including a screw part and a handle part. The screw part includes a head portion and a body portion that are connected to each other. A diameter of the body portion is smaller than a diameter of the head portion. The head portion includes a recess on a side of the head portion located away from the body portion. The handle part is pivotally connected to the head portion and pivotable between an operation position and a bent-down position. When the handle part is in the operation position, the handle part is partially located on a side of the head portion located away from the body portion. When the handle part is in the bent-down position, the handle part is located away from the side of the head portion located away from the body portion.

Abstract: A power supply apparatus is electrically connected with a load and one of a second substrate, a third substrate and a fourth substrate each of which has a first locking portion. The power supply apparatus comprises a first substrate, a power distribution circuit and a position board. The first substrate comprises a first coupling portion and a second coupling portion. The power distribution circuit is disposed at the first substrate, receives the external electric power and converts it into a supplying power. The position board comprises a second locking portion that is coupled to the second coupling portion of the first substrate when the power supply apparatus is electrically connected with one of the second substrate and the third substrate. The first locking portion of one of the second substrate, the third substrate and the fourth substrate is coupled to the first coupling portion of the first substrate.

Abstract: An electronic assembly including a disk drive mount, a circuit board, a first tray and an expansion card. The disk drive mount has an accommodation space. The circuit board is fixed to the disk drive mount. The first tray is removably mounted in the disk drive mount and located in the accommodation space. The expansion card is fixed in the first tray and electrically connected to the circuit board.

Abstract: The invention provides an impact energy absorbing carrier including a frame, a carrier, and multiple impact energy absorbing units. Each of the impact energy absorbing units includes a first link, a second link, and an impact energy absorbing member. The first link and the second link are respectively fixed to the frame and the carrier. The impact energy absorbing member includes a periphery part and two protrusion parts. The periphery part includes a first side portion and a second side portion located opposite to each other. The first side portion of the periphery part are respectively and pivotably disposed on the first link and the second link. The periphery part surrounds the protrusion parts, the protrusion parts are respectively connected to the first side portion and the second side portion of the periphery part, and a first buffering space is located between the protrusion parts.

Abstract: A playback method of infrared remote control audiovisual device comprises: utilizing a display interface and an audio output interface to output frames and an audio signal of a video; utilizing an infrared sensor to receive a first indication signal; pausing a playback of the display interface and an output of the audio output interface according to the first indication signal, so that the display interface displays a paused frame; utilizing the infrared sensor to receive a second indication signal; determining a target character pattern of a target block in the paused frame according to the second indication signal; extracting a determined audio track corresponding to the target character pattern from the audio signal according to a relation between the pre-processed character feature sets and pre-processed audio tracks; controlling the display interface to resume the playback and controlling the audio output interface to output the determined audio track.

Abstract: A server chassis including rack and mount cage. Mount cage includes cage part and handle. Cage part is fixed on a side of the rack. Handle includes pivot part, handheld part, and protruding part. Handheld part and protruding part are respectively connected to two opposite sides of pivot part, and pivot part is pivotally connected to cage part. Protruding part has first side surface located on a side of protruding part that is located away from pivot part. An axis of pivot part is spaced apart from first side surface by first distance along first direction. Pivot part is spaced apart from first side surface by second distance along second direction. First direction is different from the second direction, and first distance is different from second distance.

Abstract: A heat dissipation system includes a single fan, first and second heat sources, first, second, and third heat pipes, and first and second heat dissipation arrays. The first heat pipe is thermally coupled with the first heat source. The second heat pipe is thermally coupled with the second heat source. The third heat pipe has a first position thermally coupled with the first heat pipe and a second position thermally coupled with the second heat pipe. The first heat dissipation array is arranged around the first position and thermally coupled with the third heat pipe. The second heat dissipation array is arranged around the second position and thermally coupled with the third heat pipe. The single fan is between the first and second heat sources, and configured to blow airflows towards the first and second heat sources, the first and second heat dissipation arrays.

Abstract: An immersion cooling system configured to store a coolant configured for cooling a heat source and including a liquid container, a tube and a gas regulating assembly. The liquid container is configured to store the coolant configured to cool the heat source. One end of the tube is connected to the liquid container. The gas regulating assembly is located above the tube and includes a valve, a cooler, and a gas container. The valve includes a first pipe, a second pipe and a third pipe. The valve is switchable to connect the first pipe to the second pipe or connect the first pipe to the third pipe. The first pipe of the valve is connected to the tube via the cooler. The second pipe is connected to ambient air, and the third pipe is connected to the gas container.

Abstract: A high-speed serial computer expansion bus circuit topology, comprises: a first signal path connecting between a first interface and a second interface, a second signal path connecting between the first interface and a third interface, a third signal path connecting between the third interface and a fourth interface, a first selector circuit having a first passive element and a second passive element which are respectively disposed in the first signal path and the second signal path, a second selector circuit having a third passive element and a fourth passive element which are respectively disposed in the second signal path and the third signal path. The second signal path is conducted when the first passive element and the second passive element are conducted, the third signal path is conducted when the third passive element and the fourth passive element are conducted.

Abstract: A server chassis, configured to detachably fasten a PCB, includes a case, an expansion frame, and a fastening assembly. The fastening assembly includes a slidable component, a guiding component disposed through the slidable component and fixed to the case, a movable pin movably disposed through the slidable component, and a fastening pin fixed to the slidable component. When the slidable component is at a fastening position, the movable pin is movable between inserted and extracted positions. When the movable pin is at the inserted position, the movable pin is disposed through the slidable component and the case, such that the slidable component is positioned at the fastening position, and the fastening pin is disposed through the PCB and the expansion frame. When the movable pin is at the extracted position, the movable pin is disengaged from the case, such that the slidable component is slidable to a releasing position.

Abstract: A method for generating a loop video comprises: obtaining an input video including multiple frames with a first frame, with each of frames having multiple pixels; extracting a moving object corresponding to a moving pixel region in the first frame with the moving pixel region having at least two pixels; inputting multiple candidate periods to a target function respectively to calculate multiple errors of the moving pixel region; determining a start frame and a loop period of the moving pixel region for each error, with the loop period being associated with one of the candidate periods; generating multiple output frames according to start frames and loop periods; and generating an output frame sequence from the output frames according to a loop parameter, wherein the output frame sequence corresponds to the loop video.

Abstract: The present disclosure provides an installation device and a server including the installation device. The installation device includes: a bottom bracket for supporting a hard disk drive; a first positioning bracket detachably arranged on a first side of the bottom bracket; and a second positioning bracket fixedly arranged on a second side opposite to the first side of the bottom bracket; the first positioning bracket and the second positioning bracket are configured to fix the hard disk drive. Compared with the traditional design, four screws are omitted in the present disclosure to avoid manual locking operation in the production line and operation and maintenance of the hard disk drive module, which meets the requirements of easy installation and cost-saving design. And by adding an adapter bracket, it can be converted to a 2.5-inch hard drive bracket, which has strong compatibility.

Abstract: A shaft structure includes a carrier, a first mandrel, and a second mandrel. The carrier has a groove, a receiving space communicated with the groove, and two protruding portions. The two protruding portions protrude from an inner wall of the carrier, and the two protruding portions are located between the receiving space and the groove. The first mandrel has a first gear, a first rotation shaft, and a first connection shaft connected to the first gear and the first rotation shaft. The first gear is located in the receiving space. The second mandrel has a second gear, a second rotation shaft, and a second connection shaft connected to the second gear and the second rotation shaft. The second gear is configured to move in the receiving space and the groove.