China Mobile Communications Corporation

Tsinghua University

Chuan Yu

Wei Wu

Jie Zhou

Jun Ma

Lei Deng

Yonghui Wang

Haoyang Zhang

Daqing Chen

Yilang Cen

Chunmei Zhu

Wei Jiao

A method and a system for calibrating a plurality of surveillance cameras are provided. The method includes: sampling a plurality of first images in a monitoring scene of the plurality of surveillance cameras by a sampling device and sampling a second image by each of the plurality of surveillance cameras; performing a feature matching on the plurality of first images to obtain a matching result between the plurality of first images; reconstructing a three-dimensional point set of the monitoring scene according to the matching result between the plurality first of images; and calculating parameters of each of the plurality of surveillance cameras according to the three-dimensional point set and the second image sampled by each of the plurality of surveillance cameras.

Method and system for calibrating surveillance cameras

A method for implementing communication includes: determining an operating system corresponding to a current time slice, the determined operating system supporting a communication network standard; determining a memory partition; running the determined operating system based on the determined memory partition and driving a Digital Signal Processor, a signal processing module supporting the communication network standard and a Radio Frequency signal transceiver based on a hardware driving program included in a system program of the determined operating system; controlling the signal processing module to read authentication information of the terminal and controlling the Digital Signal Processor to encapsulate, based on a communication protocol, the authentication information of the terminal to generate a communication network signal; and controlling the Radio Frequency signal transceiver to convert the communication network signal into a Radio Frequency signal and send the Radio Frequency signal to a communication network.

Communication implementation method, virtual machine program product, modem and terminal

A method for reporting and updating device description framework information. The device description framework information reporting method implements that the terminal device reports the updated device description framework information to DMS, which includes: updating the local device description framework information based on the changed structure of the device management tree; informing the updated device description framework information to DMS. The device description framework information updating method improves the validity of DMS's management over the terminal device. The updating method includes: receiving an updating inform about the device description framework information from a terminal device; acquiring the update of the device description framework information based on the updating inform; and updating the device description framework information of the terminal device stored locally based on the acquired device description framework information. Corresponding device, device management server and system are also provided.

Device description framework information reporting and updating method, device and system

The present invention relates to a method of data uplink synchronization between a mobile terminal and a server. The server modifies the stored address book data one item by one item. The present invention also relates to a method of data downlink synchronization between a mobile terminal and a server. Before the server sends address book data to the mobile terminal requesting the downlink synchronization, it performs item-by-item adaptation of the address book data according to the item's attribute and parameter supported by the mobile terminal. The present invention relates to another method of data downlink synchronization between a mobile terminal and a server. The mobile terminal, according to the received address book data, modifies the stored address book one item by one item. The present invention implements the operation on each item in the address book, the adaptation to the item's attribute and parameter of the address book according to the specific situation of the mobile terminal, and the mapping to each item according to the meaning of the attribute and parameter so as to effectively avoid information loss caused by inconsistent attributes and parameters and the operations on the record.

Data synchronization method between mobile terminal and server

Growing community of inventors

Beijing, China

Chuan Yu