Abstract: A bullet-screen comment display method is provided.

Abstract: A cascaded converter architecture comprising a pure switched-capacitor (SC) stage and a resonant SC stage. Multiple switching buses are utilized to connect the first-stage SC converter with second-stage multi-phase resonant SC converters. The flying capacitors of both stages are resonant with the output inductors, so the charge distribution loss is eliminated. Zero-current switching is realized by adjusting the duty ratio and switching frequency. By using the intermediate switching bus, the number of switches can be reduced, and the intermediate bus capacitor is not required; thereby greatly reducing component count and cost while improving power density. Numerous implementation variations are described by way of example and not limitation.

Abstract: In an embodiment a method includes receiving, by an electronic device, an annotation request, wherein the annotation request is used to request to annotate a playing start-end time period of each text unit in a text corresponding to a target audio, and wherein a text unit is at least a character, a word, or an expression, obtaining, by the electronic device, the playing start-end time period of each text unit in the target audio based on a fundamental frequency of the target audio, obtaining, by the electronic device, an annotation file based on annotating the playing start-end time period of each text unit in the text based on the playing start-end time period of each text unit in the target audio and outputting, by the electronic device, the annotation file.

Abstract: A discrete state event-driven (DSED) simulation method for simulation of a power electronic system is disclosed. With respect to continuous states and discrete events in the power electronic system, the method includes: numerical integration of the continuous states with a flexible adaptive (FA) algorithm having both variable step-size and variable order; and location of the discrete events with an event-driven (ED) mechanism, in which active events are picked out and pre-scheduled before their occurrence while passive events are located by iterative search. The proposed to DSED simulation method can achieve significant improvement in simulation efficiency, with remarkably reduced computational costs at the same level of numerical accuracy. The proposed DSED simulation method is particularly applicable for complex power electronic systems with modular combined topology and high switching frequency.

Abstract: A discrete state event-driven (DSED) simulation method for simulation of a power electronic system is disclosed. With respect to continuous states and discrete events in the power electronic system, the method includes: numerical integration of the continuous states with a flexible adaptive (FA) algorithm having both variable step-size and variable order; and location of the discrete events with an event-driven (ED) mechanism, in which active events are picked out and pre-scheduled before their occurrence while passive events are located by iterative search. The proposed to DSED simulation method can achieve significant improvement in simulation efficiency, with remarkably reduced computational costs at the same level of numerical accuracy. The proposed DSED simulation method is particularly applicable for complex power electronic systems with modular combined topology and high switching frequency.