China Mobile Communications Corporation

Zhangzhe Liu

Congxing Ouyang

Han Li

Bing Wei

Zhaohui Zheng

Guanghai Zhang

Lingjun Feng

Jianfeng Tang

A camera system according to an embodiment includes a camera device, a control device, and an application server. The camera device, which includes a camera module and a power line communication (PLC) camera adaptation module, captures and provides audio/video information. The camera device modulates the audio/video information, and provides the modulated information. The camera device also demodulates the modulated signal transferred from a power line to obtain a control signal, and adjusts camera parameters according to the control signal. The control device is connected to the PLC camera adaptation module via the power line. The control device demodulates a received modulated signal of the audio/video information, and provides the demodulated signal. According to a received control indication information, the control device generates a control signal, modulates the control signal, and controls the camera module. The application server stores and provides the audio/video information, camera device information and controlling purview information of the camera device. The application server also generates and provides the control indication information. A method for controlling camera is also disclosed. Embodiments of the present invention can control the camera device remotely without using a dedicated signal line.

Camera system and its control method

The present invention discloses a method for processing the video telephone calling based on the mobile communication network. A calling terminal initiates a video telephone calling to a called telephone terminal, and when said called terminal is ringing, the called user is entitled to determine whether to cut off the telephone calling; the called terminal receives a operating information that the called user can't proceed the video telephone, and sends a disconnecting message with a reason value that called party can't proceed the video telephone to a called party mobile switch; the called party mobile switch disconnects the communication between the called party mobile switch and the called terminal and transmits the disconnecting message to a calling party mobile switch; the calling party mobile switch disconnects the communication between the calling party mobile switch and the called party mobile switch and transmits the disconnecting message to the calling terminal; and the calling terminal disconnects the communication telephone between the calling terminal and the calling party mobile switch. The present invention expands the function of the mobile user terminal and is significant to the development of electronic commerce of the mobile video telephone user.

Method for processing the video telephone calling based on the mobile communication network

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Beijing, China

Zhangzhe Liu