Abstract: The present disclosure relates to a method for detecting a region of interest in an image, a video encoding method, apparatuses, a computer device, a storage medium, and a computer program product. The method includes: obtaining a current to-be-detected image frame, determining a mapping block size parameter value from encoding parameters corresponding to the current to-be-detected image frame, dividing the current to-be-detected image frame to obtain multiple mapping blocks based on the mapping block size parameter value, performing a texture region detection on each mapping block to obtain a texture region of interest detection result. performing a motion region of interest detection on each mapping block to obtain a motion region of interest detection result, and determining a region of interest of the current to-be-detected image frame based on the texture region of interest detection result and the motion region of interest detection result.

Abstract: The present disclosure relates to a memory access processing method and apparatus, a computer device, a storage medium and a computer program. The method includes: acquiring a memory access request transmitted by a hardware module, the memory access request carrying a protection identifier, an access type, and an access area corresponding to the hardware module, the hardware module being pre-assigned with the corresponding protection identifier, and a memory area that the hardware module needs to access being pre-assigned to a memory region corresponding to an access permission; determining the memory region in which the access area is located; determining whether the protection identifier corresponding to the hardware module has the access permission for a corresponding access type to the memory region; and responding to the memory access request when the protection identifier corresponding to the hardware module has the access permission for the corresponding access type to the memory region.

Abstract: Disclosed are parallel encoding and decoding method and apparatus, a computer device, a storage medium, and a computer program product. The method includes: acquiring a synchronization node corresponding to a codec core, and transmitting a frame synchronization detection request to the synchronization node based on a frame to be encoded and decoded; acquiring a frame synchronization result corresponding to the frame synchronization detection request; and determining a encoding and decoding mode for the frame to be encoded and decoded based on the frame synchronization result, and encoding and decoding the frame to be encoded and decoded based on the encoding and decoding mode. By using the method, a plurality of codec cores can be employed to code and decode different frames in the same video in parallel, thereby improving the frame rate.

Abstract: The disclosure relates to a composite material for a secondary lithium-ion battery, and a preparation method therefor and the use thereof. The composite material for a secondary lithium-ion battery is such that: the interior thereof is a spherical porous hard carbon material having hollow holes, and a product resulting from the decomposition and deposition of a silicon-containing gas and one or more gaseous compounds containing any element of C, N, B and P are deposited in the pores, wherein the product comprises silicon nanoparticles, and the porous hard carbon material is obtained by means of curing a hard carbon matrix using a double emulsion method and then carbonizing same.

Abstract: Disclosed are parallel encoding and decoding method and apparatus, a computer device, a storage medium, and a computer program product. The method includes: acquiring a synchronization node corresponding to a codec core, and transmitting a frame synchronization detection request to the synchronization node based on a frame to be encoded and decoded; acquiring a frame synchronization result corresponding to the frame synchronization detection request; and determining a encoding and decoding mode for the frame to be encoded and decoded based on the frame synchronization result, and encoding and decoding the frame to be encoded and decoded based on the encoding and decoding mode. By using the method, a plurality of codec cores can be employed to code and decode different frames in the same video in parallel, thereby improving the frame rate.

Abstract: Provided are a networking method, communication method, and communication system for a multi-mode communication device, a device, and a chip. The networking method includes: sending response information about available communication modes between a network access node and a to-be-connected node to the network access node, where the available communication modes are divided into a plurality of sets, and modes in each of the sets are incompatible with each other, and modes in different sets are compatible with each other; and locking an optimal mode, selected from each of the sets based on the response information, as handshake information between the two nodes when a preset negotiation result is met, such that the network access node reports corresponding routing information, and a root node updates networking routing information.

Abstract: Disclosed are a beacon timeslot allocation method, apparatus, and device. The method includes: determining, based on a type of a beacon frame sent by a node in a system on a highspeed radio frequency (HRF) link, a node sending a standard beacon frame as a first-type node, and a node sending a simplified beacon frame as a second-type node; and in a process of sending a beacon frame on the HRF link by one first-type node, scheduling at least one first-type node and/or second-type node that have/has not been scheduled to perform sending on a highspeed power line carrier (HPLC) link yet to send a beacon frame on the HPLC link, where the scheduled first-type node and/or second-type node do/does not include the one first-type node or a node on a path between the one first-type node and a central coordinator (CCO) in the system.

Abstract: An inverse pseudo fully-differential amplifier having a common-mode feedback control circuit and a method for maintaining a stable output common-mode level are provided. The inverse pseudo fully-differential amplifier includes the pseudo fully-differential operation circuit and a common-mode feedback control circuit. The pseudo fully-differential operation circuit includes inverter amplifiers (2) and (3). The inverter amplifiers (2) and (3) respectively have a first feedback control terminal and a second feedback control terminal. Input terminals of the common-mode feedback control circuit are respectively connected with output terminals of the inverter amplifier (2) and (3), and are configured to detect common-mode output voltages of the inverter amplifier (2) and (3).

Abstract: An image compression method is provided. The image compression method includes steps of receiving, by a tile division generator, an input image; by the tile division generator, determining whether the input image corresponds to a partial updated region and whether the partial updated region coincides with one tile or a combination of tiles of a current frame and generating a determination result; and by the tile division generator, determining whether to re-perform tile division and compressing and encoding one portion of the current frame according to the determination result.

Abstract: An inverse pseudo fully-differential amplifier having a common-mode feedback control circuit and a method for maintaining a stable output common-mode level are provided. The inverse pseudo fully-differential amplifier includes the pseudo fully-differential operation circuit and a common-mode feedback control circuit. The pseudo fully-differential operation circuit includes inverter amplifiers (2) and (3). The inverter amplifiers (2) and (3) respectively have a first feedback control terminal and a second feedback control terminal. Input terminals of the common-mode feedback control circuit are respectively connected with output terminals of the inverter amplifier (2) and (3), and are configured to detect common-mode output voltages of the inverter amplifier (2) and (3).

Abstract: An image compression method is provided. The image compression method includes steps of receiving, by a tile division generator, an input image; by the tile division generator, determining whether the input image corresponds to a partial updated region and whether the partial updated region coincides with one tile or a combination of tiles of a current frame and generating a determination result; and by the tile division generator, determining whether to re-perform tile division and compressing and encoding one portion of the current frame according to the determination result.

Abstract: An advanced video coding and decoding chip and a method with an optimized processing sequence for the sub-blocks, each including 4×4 pixels, of a macroblock in a discrete cosine transform (DCT) and an inverse DCT are disclosed, wherein the compression hardware and the reconstruction hardware execute the compression and the reconstruction of at least part of a field in parallel.

Abstract: A three-way sequential power amplifier includes an input network connected to a main amplifier, a first peak amplifier, a second peak amplifier, which in turn are connected to a three-way output network. An input signal for an input port of the input network is a wideband radio frequency (RF) signal with a time varying amplitude. An output port of the output network can be connected to an antenna, via a bandpass filter, to attenuate out of band frequencies.

Abstract: A three-way sequential power amplifier includes an input network connected to a main amplifier, a first peak amplifier, a second peak amplifier, which in turn are connected to a three-way output network. An input signal for an input port of the input network is a wideband radio frequency (RF) signal with a time varying amplitude. An output port of the output network can be connected to an antenna, via a bandpass filter, to attenuate out of band frequencies.

Abstract: An advanced video coding and decoding chip and a method with an optimized processing sequence for the sub-blocks, each including 4×4 pixels, of a macroblock in a discrete cosine transform (DCT) and an inverse DCT are disclosed, wherein the compression hardware and the reconstruction hardware execute the compression and the reconstruction of at least part of a field in parallel.

Abstract: The present invention provides a method for reducing reagent usage, comprising the steps of providing a retainer, at least one group of loopholes being provided on the sidewalls of the retainer; providing a colorimetric glass, adapted to be inserted into the retainer, for receiving the first reagent to be observed through said loopholes; providing a cap, for capping the colorimetric glass and the retainer into a whole, after the colorimetric glass being inserted into the retainer. The present invention mainly uses a reagent tube with a retainer having a new structure, a colorimetric glass and a cap, storing the first reagent only in the colorimetric glass, and the volume of the colorimetric glass is far less than that of the current reagent tube, thus the usage of the reagents can be reduced effectively.

Abstract: The present invention provides a method for reducing reagent usage, comprising the steps of providing a retainer, at least one group of loopholes being provided on the sidewalls of said retainer; providing a colorimetric glass, adapted to be inserted into said retainer, for receiving the first reagent to be observed through said loopholes; providing a cap, for capping the colorimetric glass and the retainer into a whole, after the colorimetric glass being inserted into the retainer. The present invention mainly uses a reagent tube with a retainer having a new structure, a colorimetric glass and a cap, storing the first reagent only in the colorimetric glass, and the volume of the colorimetric glass is far less than that of the current reagent tube, thus the usage of the reagents can be reduced effectively.

Abstract: By a method of inducing differentiation of cells having: a step of co-culturing amniotic epithelial cells and amniotic interstitial cells so as to induce their differentiation into predetermined tissue cells, it is possible to efficiently induce differentiation of the amniotic epithelial cells and the amniotic interstitial cells. It is preferable that the amniotic epithelial cells or the amniotic interstitial cells are prepared by being cultured by a predetermined culture method.