Abstract: A method of providing an interactive content to a prospective user at a mobile device, the mobile device including a non-transitory computer readable medium including a computer executable program code and a processor for executing the computer executable program code is described. The method includes steps for initiating capture of an audio stream by shaking the mobile device; capturing the audio stream via a microphone in the mobile device; converting the captured audio stream into an audio fingerprint; sending the audio fingerprint to a server; receiving the interactive content from the server if there is a match between audio fingerprints stored on the server, and the audio fingerprint sent by the mobile device; and displaying the interactive content on the mobile device.

Abstract: An electronic device with one or more processors, memory, and a display detects a first trigger event and, in response to detecting the first trigger event, collects a audio sample of environmental audio data associated with a media item. The device transmits information corresponding to the audio sample to a server. In response to transmitting the information, the device obtains attribute information corresponding to the audio sample, where the attribute information includes metadata for the media item, a time indicator of a position of the audio sample in the media item, and stream information for the media item. The device displays a portion of the attribute information. The device detects a second trigger event and, in response to detecting the second trigger event: determines a last obtained time indicator; streams the media item based on the stream information; and presents the media item from the last obtained time indicator.

Abstract: A cascade bridge-type DC-AC power converter device includes a low-frequency bridge-type power converter including an AC terminal and a DC bus and a high-frequency bridge-type power converter including an AC terminal. A power conversion method includes: serially connecting the AC terminal of the high-frequency bridge-type power converter and the AC terminal of the low-frequency bridge-type power converter; operating frequency of the low-frequency bridge-type power converter synchronized with frequency of an AC source and operating the high-frequency bridge-type power converter with high-frequency PWM to generate a multilevel AC voltage. A DC power source connects to the DC bus of the low-frequency bridge-type power converter. No additional power supply circuit will be required for power supply to a DC bus of the high-frequency bridge-type power converter. Accordingly, the power circuit is simplified and the manufacturing cost is reduced.

Abstract: The present disclosure relates to a method for displaying splash screen content, a terminal, a content server, and a system therefor. The method includes: receiving a content request sent by a terminal, the content request carrying first time and/or a geographical location of the terminal, the first time being time when the terminal last requests splash screen content; acquiring splash screen content according to the first time and/or the geographical location of the terminal; and sending the splash screen content to the terminal such that the terminal displays the splash screen content. The content server includes: a first receiving module, a first acquiring module, and a first sending module. The terminal includes: a second sending module, a second receiving module, and a display module. The system includes: a terminal and a content server. The present disclosure enhances personality and interest of a terminal product and improves user experience.

Abstract: A multilevel AC/DC power converter device includes a high-frequency power converter including a first AC port and a low-frequency power converter including a second AC port and a DC port. A power converting method includes: serially connecting the first AC port of the high-frequency power converter and the second AC port of the low-frequency power converter; operating frequency of the low-frequency power converter synchronized with frequency of an AC power source and operating the high-frequency power converter with high-frequency PWM to generate a multilevel AC voltage; controlling the multilevel AC voltage to obtain a current of an input AC port being sinusoidal and in same phase with a voltage of the AC power source. Accordingly, the input power factor approaches unity and the low-frequency power converter supplies a DC voltage to a load via a DC output port.

Abstract: A method for controlling microblog display, a microblog client and a computer storage medium are described, which pertain to microblog technology. A display interface of microblog consists of a main display area for displaying microblog messages and a promotion display area for displaying recommended messages. The method includes that: a micro-blog message is acquired and displayed in the main display area; recommended messages are pulled from a microblog server at a preset frequency, or/and recommended messages pushed by the microblog server at a preset frequency are received; the recommended messages are displayed in the promotion display area.

Abstract: A method and device for performing audio recognition, including: collecting a first audio document to be recognized; initiating calculation of first characteristic information of the first audio document, including: conducting time-frequency analysis for the first audio document to generate a first preset number of phase channels; and extracting at least one peak value characteristic point from each phase channel of the first preset number of phrase channels, where the at least one peak value characteristic point of each phase channel constitutes the peak value characteristic point sequence of said each phase channel; and obtaining a recognition result for the first audio document, wherein the recognition result is identified based on the first characteristic information, and wherein the first characteristic information is calculated based on the respective peak value characteristic point sequences of the preset number of phase channels.

Abstract: Methods and apparatus for uploading a file based on a webkit kernel browser are disclosed herein. A UIWebView control in the webkit kernel browser can be used to monitor a url request. The url request is linked with a triggering button related to a file for uploading on a webpage. It is then determined whether the url request monitored by the UIWebView control contains an agreed protocol header. When the url request is determined that contains the agreed protocol header, the file for uploading is received and uploaded. When it is determined that the url request does not contain the agreed protocol header, the file for uploading is not uploaded. An apparatus for uploading a file based on a webkit kernel browser can include a monitoring module and a determination executing module.

Abstract: Disclosed in the present invention are a method and a device for uploading and downloading files, which belongs to the technical field of computers. The method for uploading files includes, judging whether a local file which is dragged and stopped by a user is entering an activation area of a network file folder, prompting the user to choose whether the user confirms uploading the local file to the network file folder or not if it is, uploading the local file to the network file folder if a confirming uploading information chosen by the user according to the prompt is received. The method for downloading files includes, judging whether a network file dragged and stopped by the user is entering an activation area of a local file folder, prompting the user to choose whether the user confirms downloading the network file to the local file folder or not if it is, downloading the network file to the local file folder if a confirmation of downloading chosen by the user is received according to the prompt.

Abstract: A universal method for jointly measuring surface property parameters of a material comprises the following steps: performing saturation processing on a surface of a material to be measured; mixing the material to be measured which has been processed by saturation with an indicating electrolyte solution; after the mixture solution achieves an balance by ion exchange, measuring the balanced concentration values of positive ions of the indicating electrolyte and H+ in the mixture solution; according to the balanced concentration values of positive ions of the indicating electrolyte, calculating surface potential of the material; and according to the surface potential of the material, calculating specific surface area and surface charge density of the material; according to surface charge density of the material, calculating surface electric field intensity; according to surface charge density and specific surface area of the material, calculating total surface charge of the material.

Abstract: A UPS system includes one or more UPS units with identical or different capacities. A control circuit, used to control a DC/AC inverter of the UPS unit, includes a voltage feedback control circuit and a current feedforward control circuit. The voltage feedback control circuit is used to control the amplitude and the waveform of load voltage. The current feedforward control circuit is used to operate the DC/AC inverter of the UPS unit as a virtual fundamental resistor and a virtual harmonic resistor which are serially connected to an output terminal of the DC/AC inverter such that each UPS unit can be distributed to provide an output current according to the capacity ratio of the UPS system.

Abstract: A UPS system includes one or more UPS units with identical or different capacities. A control circuit, used to control a DC/AC inverter of the UPS unit, includes a voltage feedback control circuit and a current feedforward control circuit. The voltage feedback control circuit is used to control the amplitude and the waveform of load voltage. The current feedforward control circuit is used to operate the DC/AC inverter of the UPS unit as a virtual fundamental resistor and a virtual harmonic resistor which are serially connected to an output terminal of the DC/AC inverter such that each UPS unit can be distributed to provide an output current according to the capacity ratio of the UPS system.