3 results about "Stream data" patented technology

The invention provides an RTMP-to-M3U8 video slicing system. The system comprises an Internet network, and a monitoring video push end, a Web server, an RTMP server and an M3U8 server which are connected with the Internet network respectively, wherein the monitoring video push end is used for converting acquired field video information into an FLV (Flash Video) stream format in real time, and uploading the field video information into the RTMP server through the Internet network; the RTMP server is used for receiving and saving FLV stream format data, performing Ts slicing process on the FLV stream data, converting the spliced FLV stream format data into Ts video splicing data of M3U8, and saving the Ts video splicing data in the M3U8 server. The invention further provides an RTMP-to-M3U8 video slicing method. By adopting the RTMP-to-M3U8 video slicing system and method, mobile terminals of iOS and Android systems can browser, store and call monitoring video data stored on networks simultaneously.

The embodiment of the invention provides a data exchange method applied to an articulated naturality web, the articulated naturality web is connected to the Internet through a security gateway, and afirst white list is pre-configured in the security gateway. The method comprises the steps of using the security gateway to receive a plurality of articulated naturality web data packets from the articulated naturality web and a plurality of Internet data packets from the Internet; carrying out white list verification on each Internet data packet and each articulated naturality web data packet, and reserving the data packets which are verified to be qualified; extracting the first articulated naturality web audio and video stream data from the articulated naturality web data packet which is verified to be qualified, and extracting the first articulated naturality web audio and video stream data from the Internet data packet which is verified to be qualified; based on each first articulatednaturality web audio and video stream data and each first Internet audio and video stream data, updating the first white list; and based on an updated second white list, extracting a second articulated naturality web data packet and a second Internet data packet, and converting each second articulated naturality web data packet and each second Internet data packet to the articulated naturality web or the Internet.

The invention relates to an MMC-HVDC power transmission line fault judgment method. The method is technically characterized in that discrete wavelet analysis is adopted to extract effective values ofhigh-frequency voltages on a direct-current side and a converter side of a line smoothing reactor for comparison so as to judge internal and external faults. Then, a K-means clustering algorithm is adopted; voltage and current data of a single-side protection unit are acquired by using different fault types and different fault positions through a short time window after a direct-current line faultoccurs, clustering analysis is performed on the voltage and current data to obtain centroids and thresholds of the voltage and current data of the single-side protection unit, and corresponding protection criteria are determined through training so as to realize fault pole selection. The MMC-HVDC power transmission line fault judgment method is not influenced by the fault position and the transition resistance, the MMC-HVDC power transmission line fault can be rapidly and accurately detected, and the fault type can be identified.