Abstract:
A file transfer method and an electronic device are provided, and relate to the field of communications technologies, to avoid file mis-transfer and improve file transfer accuracy. The method includes: displaying, by a first device, a first interface, namely, a graphical user interface of a first application (S301); when a distance between a first NFC chip and an electronic tag or a second NFC chip of a second device is less than a preset threshold, obtaining a Bluetooth address of the second device (S303); determining that the first device is currently in a first scenario (S308); receiving a second scenario in which the second device is currently located and that is notified by the second device (S311); and when a priority of the first scenario is higher than that of the second scenario, transferring a first file corresponding to the first interface to the second device through a communication connection established based on the Bluetooth address (S312 and S313); or when a priority of the first scenario is lower than that of the second scenario, receiving a second file that corresponds to a second interface and that is sent by the second device through a communication connection established based on the Bluetooth address (S316).
Abstract:
An intra-frame encoding method, an intra-frame decoding method, an encoder, and a decoder, where the intra-frame encoding method includes obtaining reference pixel values of a current picture block obtaining a predicted value of a first-type pixel in the current picture block according to the reference pixel values of the current picture block using an intra-frame prediction algorithm, obtaining residual values of the first-type pixel, obtaining transform coefficients according to the residual values of the first-type pixel, quantizing the transform coefficients, reconstructing the first-type pixel according to the quantized transform coefficients and the predicted value of the first-type pixel, and obtaining a reconstructed value of the second-type pixel according to the reconstructed value of the first-type pixel using an interpolation method. Hence, flexible encoding can be implemented, and encoding efficiency can be improved.
Abstract:
An intra-frame encoding method, an intra-frame decoding method, an encoder, and a decoder, where the intra-frame encoding method includes obtaining reference pixel values of a current picture block obtaining a predicted value of a first-type pixel in the current picture block according to the reference pixel values of the current picture block using an intra-frame prediction algorithm, obtaining residual values of the first-type pixel, obtaining transform coefficients according to the residual values of the first-type pixel, quantizing the transform coefficients, reconstructing the first-type pixel according to the quantized transform coefficients and the predicted value of the first-type pixel, and obtaining a reconstructed value of the second-type pixel according to the reconstructed value of the first-type pixel using an interpolation method. Hence, flexible encoding can be implemented, and encoding efficiency can be improved.
Abstract:
An optical circuit switching matrix includes a plurality of optical ports, each optical port being optically coupled to a respective one of a plurality of user nodes and an optical coupler having at least one input port optically coupled to the plurality of optical ports, and an output port. The optical circuit switching matrix also includes a wavelength demultiplexer having an input optically coupled to the output port of the optical coupler, and a plurality of output ports, each output port being optically coupled to a respective one of the plurality of optical ports.
Abstract:
A scheduling method, including: listening to, by a station, a first beacon frame containing a DTIM message used for indicating a beacon interval allocated for each group of stations within a current scheduling period; determining the beacon interval allocated for the station within the current scheduling period according to the DTIM message contained in the first beacon frame; listening to, by the station, within the beacon interval allocated for the station, a second beacon frame containing scheduling information of the current beacon interval used for indicating a time period allocated to each group of stations for data transmission within the current beacon interval; when data transmission is required, transmitting, by the station, data within the time period allocated to the group of the station according to indication of the scheduling information. The present invention improves utilization of time periods, saves time resources and enhances transmission efficiency.
Abstract:
Embodiments of the present invention provide a node grouping method, a node, and an access point (AP). The method comprises: receiving a grouping request sent by an AP; according to the grouping request, obtaining a received signal strength indicator (RSSI); obtaining a group Identity (ID) of a group determined according to the RSSI. In the embodiment of the present invention, nodes are grouped according to the RSSI, so as to solve the problems of contention collision and low network performance in a large-scale network, avoid the problem of unfair throughput incurred by the near-far effect, and reduce the phenomena of hidden terminals.
Abstract:
System and method embodiments are provided for carrier-signal power ratio (CSPR) control in direct detection optical systems. In an embodiment, a method for CSPR control in a direct detection optical system includes receiving an electrical signal in a receiver (RX) digital signal processor (DSP), wherein the electrical signal is obtained from a corresponding optical signal via a direct detection component; estimating, a CSPR for the electrical signal; generating one of a control signal according to the CSPR; and transmitting the control signal to one of an optical filter and a laser, wherein the wavelength control signal controls causes a center wavelength (CW) of one of the optical filter and the laser to be adjusted such that an offset between the CW of the laser and the CW of the optical filter results in a desired CSPR.
Abstract:
A Zr-based amorphous alloy is provided; the formula of the Zr-based amorphous alloy is (Zr,Hf,Nb)aCubTicAldRee, where a, b, c, d, and e are corresponding atomic percent content of elements in the Zr-based amorphous alloy, 40≦a≦65, 20≦b≦50, 0.1≦c≦10, 5≦d≦15, 0.05≦e≦5, a+b+c+d+e≦100, Re is one or a combination of plural ones selected from a group of elements La, Ce, Po, Ho, Er, Nd, Gd, Dy, Sc, Eu, Tm, Tb, Pr, Sm, Yb, and Lu, or Re is combined of Y and one or a combination of plural ones selected from a group of elements La, Ce, Po, Ho, Er, Nd, Gd, Dy, Sc, Eu, Tm, Tb, Pr, Sm, Yb, and Lu.
Abstract translation:提供Zr基非晶合金; Zr基非晶态合金的配方为(Zr,Hf,Nb)aCubTicAldRee,其中a,b,c,d和e分别为Zr基非晶合金中元素的相应原子百分含量,40≦̸ a≦̸ 65 ,20& nlE; b≦̸ 50,0.1≦̸ c≦̸ 10,5& nlE; d≦̸ 15,0.05& e1; e≦̸ 5,a + b + c + d + e≦̸ 100,Re是一个或多个选自 一组元素La,Ce,Po,Ho,Er,Nd,Gd,Dy,Sc,Eu,Tm,Tb,Pr,Sm,Yb和Lu,或Re组合为Y与一个或多个 选自元素La,Ce,Po,Ho,Er,Nd,Gd,Dy,Sc,Eu,Tm,Tb,Pr,Sm,Yb和Lu中的一种元素。