Abstract: A solid-state polymer electrolyte for lithium batteries is provided. The solid-state polymer electrolyte includes a solid-state network polymer electrolyte, formed by a modified poly(ethylene oxide) polymer material and an epoxy alkane crosslinking agent to form a poly(ethylene oxide) network structure, wherein the modified poly(ethylene oxide) high molecular weight material has an amino end, and the solid-state network polymer electrolyte comprises a lithium salt, The ratio of ethylene oxide (EO) to lithium (Li) in the solid-state network polymer electrolyte is 1:1 to 3:1, and a poly(vinylidene fluoride)-based polymer is doped in the solid-state network polymer electrolyte.

Abstract: Semiconductor device structures and methods for manufacturing the same are provided. The semiconductor device structure includes a substrate, a die and a stiffener. The substrate has an upper surface. The die is disposed on the upper surface of the substrate. The stiffener is disposed on the upper surface of the substrate and surrounds the die. The stiffener has a first upper surface adjacent to the die, a second upper surface far from the die and a lateral surface extending from the first upper surface to the second upper surface. A first distance between the first upper surface of the stiffener and the upper surface of the substrate is less than a second distance between the second upper surface of the stiffener and the upper surface of the substrate.

Abstract: An electrolyte and a fabricating method thereof, and a lithium battery are described. The fabricating method of the electrolyte has steps of: adding a PVDF-based polymer and a PMA-based polymer to a liquid electrolyte to form a mixture, wherein the liquid electrolyte comprises a lithium salt; heating the mixture to between 60 and 100° C. for more than 4 hours, so as to form a transparent solution; and cooling the transparent solution to form the electrolyte. The electrolyte is a gel-state electrolyte between ?60 and 80° C., which is suitable for use as an electrolyte in a lithium battery.

Abstract: Semiconductor device structures and methods for manufacturing the same are provided. The semiconductor device structure includes a substrate, a die and a stiffener. The substrate has an upper surface. The die is disposed on the upper surface of the substrate. The stiffener is disposed on the upper surface of the substrate and surrounds the die. The stiffener has a first upper surface adjacent to the die, a second upper surface far from the die and a lateral surface extending from the first upper surface to the second upper surface. A first distance between the first upper surface of the stiffener and the upper surface of the substrate is less than a second distance between the second upper surface of the stiffener and the upper surface of the substrate.

Abstract: A method for providing push-to-talk communication service is provided. The method is used in a broadcast server and includes: receiving an invitation message from a calling device; broadcasting a plurality of push-to-talk invitation messages to a plurality of called devices identified in a group list associated with the calling device; and receiving a plurality of push-to-talk acknowledgment messages from the called devices to establish a first voice transmission path between the broadcast server and the called devices.

Abstract: A cloud video system is provided. The cloud video system includes: a cloud server and a plurality of clients. The clients are connected to the cloud server via a network, and each client has an individual role. When the first of the clients has established a video session call with other clients, the cloud server determines whether to record the video session call according to the individual role of each client in the video session call.

Abstract: A video conferencing system is provided. The video conferencing system includes: a first video conferencing terminal; a second video conferencing terminal, for establishing a video conference with the first video conferencing terminal via a peer-to-peer connection; and a management server. When a user needs to add a third video conferencing terminal to the video conference to establish a multi-way video conference, the first video conferencing terminal and the second video conferencing terminal automatically terminate the peer-to-peer connection, and connect to the third video conferencing terminal through the management server to perform the multi-way video conference.

Abstract: A video conferencing system is provided. The video conferencing system includes: a first video conferencing terminal; a second video conferencing terminal, for establishing a video conference with the first video conferencing terminal via a peer-to-peer connection; and a management server. When a user needs to add a third video conferencing terminal to the video conference to establish a multi-way video conference, the first video conferencing terminal and the second video conferencing terminal automatically terminate the peer-to-peer connection, and connect to the third video conferencing terminal through the management server to perform the multi-way video conference.

Abstract: A communication system and method are provided. In the communication system, a first electrical device has an end point which is configured to connect to a plurality of 3G dongles, wherein the 3G dongles have different IP addresses; a cloud server integrates the IP addresses to generate an integrated IP address when the cloud server detects that the first electrical device is connected to the 3G dongles; and a second electrical device transmits data packets with the first electrical device via the integrated IP address through the cloud server.

Abstract: A video conference method, applied to a video conference system in a multi-way conference is provided. The video conference method includes: retrieving a first number of a plurality of terminals of the multi-way conference; determining whether at least one other terminal is requiring to join in on the multi-way conference; when the at least one other terminal is requiring to join in on the multi-way conference, increasing the first number of the terminals of the multi-way conference to a second number of the terminals; and determining a resolution of the video signal captured and transmitted by the video conference system according to the second number of the terminals. A video conference system using the video conference method, is also provided.

Abstract: A communication system and method are provided. In the communication system, a first electrical device has an end point which is configured to connect to a plurality of 3G dongles, wherein the 3G dongles have different IP addresses; a cloud server integrates the IP addresses to generate an integrated IP address when the cloud server detects that the first electrical device is connected to the 3G dongles; and a second electrical device transmits data packets with the first electrical device via the integrated IP address through the cloud server.

Abstract: An embodiment provides a video conference system including an audio processing unit, a video processing unit and a network processing unit. The audio processing unit encodes an audio signal to an audio stream. The video processing unit encodes a pause image to a first video stream when the video conference system is in a pause mode, and encodes a video signal to a second video stream when the video conference system is in a conference mode. The network processing unit encodes the first video stream to a first network package in the pause mode, and encodes the second video stream and the audio stream to a second network package in the conference mode.

Abstract: A video conference method, applied to a video conference system in a multi-way conference is provided. The video conference method includes: retrieving a first number of a plurality of terminals of the multi-way conference; determining whether at least one other terminal is requiring to join in on the multi-way conference; when the at least one other terminal is requiring to join in on the multi-way conference, increasing the first number of the terminals of the multi-way conference to a second number of the terminals; and determining a resolution of the video signal captured and transmitted by the video conference system according to the second number of the terminals. A video conference system using the video conference method, is also provided.

Abstract: In a positioning method and apparatus capable of preventing a solar battery panel from suffer damage during inspection, the method includes steps of providing a transport platen, a set of positioning device, a first probe row and a second probe row; transporting the solar battery panel to an inspecting region by the transport platen; moving the positioning devices to position the solar battery panel step by step; the first probe row pressing an electrode line on one surface of the solar battery panel; the second probe row pressing an electrode line on the other surface of the solar battery panel, thereby electrically connecting the first probe row and the second probe row. In this way, the solar battery panel can be inspected accurately without suffering damage.

Abstract: A sealing device for a gear box includes a box having a hole defined through a wall thereof and a shaft having a first end rotatably engaged with an inside of the box. A second end of the shaft is supported by a bearing which is received in a frame engaged with the hole of the box. A cap is connected to an end of the frame in the box and mounted to the second end of the shaft. A space is defined between a skirt and a protrusion of the cap so as to receive a seal therein. The seal has a flexible plate which is engaged with the end of the frame in the box. The flexible plate effectively prevents oil in the box from entering a gap between the bearing and the frame when the shaft is not rotated.

Abstract: A sealing device for a gear box includes a box having a hole defined through a wall thereof and a shaft having a first end rotatably engaged with an inside of the box and a second end of the shaft is supported by a bearing which is received in a frame engaged with the hole of the box. A cap is connected to an end of the frame in the box and mounted to the second end of the shaft. A space is defined between a skirt and a protrusion of the cap so as to receive a seal therein. The seal has a flexible plate which is engaged with the end of the frame in the box. The flexible plate effectively prevents oil in the box from entering a gap between the bearing and the frame when the shaft is not rotated.

Abstract: A worm gear reducer includes a worm fixedly mounted on a drive shaft rotatably mounted in a housing, a driven shaft rotatably mounted in the housing and including a first end portion formed with an outer thread, a mediate portion with a worm wheel mounted thereon meshing with the worm, and a second end portion. A torsion damping device includes two friction washers each mounted on the driven shaft and each urged on one side of the worm wheel, two abutting rings each securely mounted on the driven shaft and each urged on a corresponding one of the two friction washers, a biasing member mounted on the first end portion of the driven shaft and urged on one of the abutting rings, a sleeve mounted on the first end portion of the driven shaft and urged on the biasing member, and a compression nut engaged on the outer thread of the driven shaft and urged on the sleeve.