Abstract: A power capacitor and a manufacturing method thereof are disclosed. The power capacitor comprises a core installed in major insulation and at least two terminals connected with an external circuit. The core comprises a plurality of welding components mutually overlapped together, each of which comprises a plurality of capacitive elements. Each capacitive element is wound by two aluminum foils and two sets of thin films. Two aluminum foils of each capacitive element are provided with two electrodes extending in opposite directions respectively from the edges of the thin film, and the size a of each electrode is 10 mm to 15 mm. Various capacitive elements inside each welding component are electrically connected through a first batch of multilayer jointly-welded ultrasonic welding structures. Various welding components are electrically connected through a second batch of multilayer jointly-welded ultrasonic welding structures.

Abstract: Provided are a method, device, and a display device for switching video source. The method comprises: detecting and finding at least one currently available video source; displaying the video source in a video source list in the form of thumbnails, obtaining a video source selection event, switching to the selected video source from the video source list as the current video source, and displaying said video source. The present invention can at least solve the problems of low switching efficiency and abnormal switching.

Abstract: Provided are a video communication method and device. The method includes: a cloud platform stored conference related information of a video conference terminal is received from the cloud platform; and according to the conference related information, a video conference is initiated. The disclosure improves the efficiency of holding the video conference.

Abstract: Disclosed is a secondary-stream data accessing method for a videoconference terminal. The method includes: playing secondary-stream data using a playing tool installed in the videoconference terminal, and collecting video data or audio video data of the secondary-stream data; and coding the collected video data or the collected audio video data and sending the coded video data or the coded audio video data to a target videoconference terminal. Further disclosed are a videoconference terminal and a computer storage medium.

Abstract: A terminal, multipoint control unit, system and method for implementing high definition multiple pictures are provided by the present invention. The method comprises the following steps of: a Multipoint Control Unit (MCU) calculating a high definition video code stream format according to video conference control information, and sending a capability set containing the high definition video code stream format to a selected terminal; based on the high definition video code stream format in the capability set, the selected terminal encoding a high definition video image and sending the encoded high definition video code stream to the MCU; according to the video conference control information, the MCU synthesizing the received high definition video code stream image into multiple pictures, and obtaining the high definition multi-picture video code stream image and sending it to the terminals attending the conference.

Abstract: A terminal, multipoint control unit, system and method for implementing high definition multiple pictures are provided by the present invention. The method comprises the following steps of: a Multipoint Control Unit (MCU) calculating a high definition video code stream format according to video conference control information, and sending a capability set containing the high definition video code stream format to a selected terminal; based on the high definition video code stream format in the capability set, the selected terminal encoding a high definition video image and sending the encoded high definition video code stream to the MCU; according to the video conference control information, the MCU synthesizing the received high definition video code stream image into multiple pictures, and obtaining the high definition multi-picture video code stream image and sending it to the terminals attending the conference.