Abstract: A method and a device are for power supply switchover in a power system, including two power supplies, each being connected to a bus through an incoming line. The power supply currently in operation is used as the main power supply and the other power supply is used as a backup power supply. Both the incoming line and the bus have three phases, and the lines are connected by their phases. In an embodiment, the method includes: determining whether there is at least one sound phase among the three phases after identifying a fault in the power system; and if there is, obtaining a power data on the sound phase before the main power supply is disconnected. The power data is usable to determine whether the backup power supply meets the condition for connecting in the quick mode after the main power supply is disconnected.

Abstract: The present disclosure relates to apparatus and methods for route invalidation. In one example method, a common ancestor node of a network determines switching of a parent node of a node based on an update message received from the node using a new routing path established based on the switching of the parent node. The common ancestor node generates a No-Path message based on the update message. The No-Path message is for invalidating a previous routing path associated with the node on the switching of the parent node. The update message comprises at least one bit authorizing generation of the No-Path message by the common ancestor node. The at least one bit is placed in a transit information option in the update message.

Abstract: An information handling system may include a host system including at least one processor, and a network interface. The network interface may be configured to: receive, from a remote information handling system, data usable for deployment of an operating system (OS); store the data on a local storage device of the network interface; and mount a virtual storage resource accessible to the host system based on the local storage device, wherein the virtual storage resource includes the data, and wherein the host system is configured to boot from the virtual storage resource.

Abstract: A serial-parallel converter protection system includes a controller, a drive, a first switching transistor, and a second switching transistor. An input terminal of a converter is connected to an output terminal of the converter through the first switching transistor. The output terminal of the converter is connected in parallel with the second switching transistor. When an output voltage of the converter is greater than a first threshold, the controller controls the first switching transistor to be turned off and controls the second switching transistor to be turned on. In some embodiments, when the output voltage of the converter is greater than the first threshold, the controller controls the first switching transistor to be turned off and controls the second switching transistor to be turned on, so that the converter is bypassed, thereby preventing a voltage and a current from impacting a component inside the converter.

Abstract: A power supply system and method. The power supply system includes: a first branch on which a first string is located, a second branch on which a second string is located, a transfer switch unit, a first voltage compensation unit, and a controller. The transfer switch unit is configured to connect the first voltage compensation unit to the first branch based on a voltage compensation enabling signal received from the controller, where the voltage compensation enabling signal is generated by the controller based on an operating state parameter of the first string and an operating state parameter of the second string. The first voltage compensation unit is configured to compensate for an output voltage of the first branch. Thus the system and method can prevent the voltage compensation unit from causing an unnecessary system loss in the branch requiring no voltage compensation, and reduce system costs.

Abstract: This application provide a retransmission control method, a communications interface, and an electronic device. When a transmit end transmits a first data packet to a receive end and does not receive an acknowledgement corresponding to the first data packet within a first RTO, the transmit end retransmits a second data packet based on a second RTO. The second data packet is a data packet transmitted by the transmit end after the transmit end transmits the first data packet. The second RTO is related to a receive timestamp of the acknowledgement corresponding to the first data packet and a transmit timestamp of the first data packet.

Abstract: A data processing method includes receiving, by an operating system of a device, a start instruction from an application in the device that includes an identifier of a socket connection, where the application is a latency-insensitive application, calling, by the operating system according to the start instruction, a monitoring system in the operating system to monitor buffering of data of the socket connection in a kernel buffer, where the data of the socket connection is from an underlying protocol stack, and generating, by the monitoring system, a data readable identifier when a time interval between a current moment and a start moment is greater than or equal to a timeout duration, where the start moment is when the operating system receives the start instruction, and the data readable identifier indicates that the data of the socket connection is readable by the application.

Abstract: A detection device, the device comprising a sample liquid bearing device (300), test strips (200), a test strips bearing plate (100) and a signal acquisition positioning assisting device, wherein the sample liquid bearing device (300) comprises two or more samples cells (320) used for containing sample liquid, each of the test strips (200) at least comprises an identity information bearing part (250), a developing part (220) and a capillary part (210), the test strip bearing plate (100) is used for placing the test strips (200) in the same circular ring in a circumferential array radial manner, and the signal acquisition positioning assisting device is arranged on the test strip bearing plate and is used for positioning the test strips.

Abstract: A method and system for detecting a target component by using a mobile terminal, and a detection method for simultaneously screening multiple target objects.

Abstract: A power converter analog chip includes a sampling circuit configured to collect electrical parameters of the power converter; a maximum power point tracking circuit configured to perform maximum power point tracking based on the input power or the output power obtained by the electrical parameters, and to obtain an adjustment signal; a rapid shutdown circuit configured to, when receiving a rapid shutdown instruction sent from the outside of the analog chip, generate a rapid shutdown signal; a protection circuit, configured to, when an electrical parameter of the power converter exceeds a first preset threshold, generate a protection signal and send the protection signal to the multiplexer; and a multiplexer configured to select one of the rapid shutdown signal, the protection signal, or the adjustment signal as a control signal, to control a power component in the power converter.

Abstract: A short-circuit protection apparatus includes a first detection branch, a second detection branch, and a controller. The first detection branch includes a first sampling resistor and a first sampling capacitor that is connected in parallel to the first sampling resistor. A difference between an absolute value of a second sampling voltage and an absolute value of a first sampling voltage is a first difference. The controller obtains a comparison result between an absolute value of a first sampling voltage at two terminals of the first sampling resistor and an absolute value of a second sampling voltage at two terminals of the second sampling resistor, and if a difference between the absolute value of the second sampling voltage and the absolute value of the first sampling voltage is a second difference and the second difference is less than the first difference, controls the target circuit to stop working.

Abstract: A method for configuring a reconfigurable physical unclonable function (PUF) based on a device with spin-orbit torque (SOT) effect is provided. The disclosure uses SOT or magnetic field to change the magnetic moment. After the current or magnetic field is removed, the magnetic moment returns to the easy axis direction. Under the effect of thermal fluctuation, the magnetic moment is randomly oriented in the easy axis direction. The non-volatile devices are formed into an array, the magnetic moments of all non-volatile devices are randomly distributed after a write operation. The read state can be used as a random code to implement the reconfigurable PUF. The PUF has a simple structure and guarantees security. The random code in the disclosure may be two-state or multi-state, which is related to the number of magnetic domains of the ferromagnetic layer. A large number of challenge response pairs form a strong PUF.

Abstract: A power converter box and at least one junction box are integrated on a backplane of the photovoltaic module as a whole, and there is a cable for connecting the power converter and the junction box. In this case, relative to the conventional technology in which a junction box is independent of a power converter, a length of a cable used when the junction box and the power converter box are taken as a whole is shorter than a length of a cable used in the conventional technology. In this case, compared with the conventional technology in which a cable is connected to an independently placed power converter, the power converter only needs to establish a connection relationship by using a solder ribbon, a circuit board cable, and the like with low costs, so that production costs are low.

Abstract: Battery systems and methods for accelerating ion diffusion in polymer electrolyte materials. The application of oscillating electric fields is used to improve the ionic transport properties of polymer electrolytes by reducing the apparent hopping barrier of the lithium ions within the electrolyte material. Polymer-electrolyte-based battery cells exhibiting enhanced ion mobility due to the application of such oscillating electric fields.

Abstract: A network switching method includes transmitting, by an electronic device, data using a wireless local area network, when a data transmission delay of the wireless local area network is greater than a first threshold, switching, by the electronic device, to transmitting data using both the wireless local area network and a mobile network, and when the electronic device transmits data using both the wireless local area network and the mobile network, if the data transmission delay of the wireless local area network is greater than a second threshold, switching, by the electronic device, to transmitting data using the mobile network, where the first threshold is less than the second threshold.

Abstract: A data processing method and apparatus, where one or more applications run in an operating system of a first device, there is a plurality of paths between the first device and a second device, and the paths correspond to the one or more applications. In a data receiving process, the one or more applications obtain data on the paths through a system call, and further obtain data in a plurality of packets from at least one path. In a data sending process, the one or more applications distribute data to corresponding paths through a system call.

Abstract: The present disclosure relates to the field of multimedia technology, and more particularly, to a method and an apparatus for playing multimedia data, an electronic device, and a storage medium. The method for playing multimedia data includes: acquiring, in response to a first trigger operation for first multimedia data currently being played as received via a first interface of a first platform, second multimedia data corresponding to the first multimedia data and playing the second multimedia data on the first platform. With the method for playing multimedia data according to the present disclosure, it is possible to shorten the length of the path from playing the first multimedia data to playing the second multimedia data, thereby improving the efficiency in playing the second multimedia data.

Abstract: A method and system for detecting a target component by using a mobile terminal, and a detection method for simultaneously screening multiple target objects.

Abstract: A detection device, the device comprising a sample liquid bearing device (300), test strips (200), a test strips bearing plate (100) and a signal acquisition positioning assisting device, wherein the sample liquid bearing device (300) comprises two or more samples cells (320) used for containing sample liquid, each of the test strips (200) at least comprises an identity information bearing part (250), a developing part (220) and a capillary part (210), the test strip bearing plate (100) is used for placing the test strips (200) in the same circular ring in a circumferential array radial manner, and the signal acquisition positioning assisting device is arranged on the test strip bearing plate and is used for positioning the test strips.

Abstract: A network switching method includes transmitting, by an electronic device, data using a wireless local area network, when a data transmission delay of the wireless local area network is greater than a first threshold, switching, by the electronic device, to transmitting data using both the wireless local area network and a mobile network, and when the electronic device transmits data using both the wireless local area network and the mobile network, if the data transmission delay of the wireless local area network is greater than a second threshold, switching, by the electronic device, to transmitting data using the mobile network, where the first threshold is less than the second threshold.