Stmicroelectronics S.r.l.

Tencent Technology (shenzhen) Company Limited

Stmicroelectronics (shenzhen) R&d Co. Ltd.

Cheng Pan Cai

Xuxin Wang

Dino Costanzo

Wen Tang

Jianhui Yao

Xi Yu Xu

Jin Zhang

Le Liu

Xianwen Chen

A three-phase load is powered by a PWM (e.g., SVPWM) driven DC-AC inverter having a single shunt-topology. A shunt voltage and a branch voltage of the inverter (across a transistor to be calibrated) are measured during a second period of each SVPWM sector, and the drain-to-source resistance of the calibrated transistor is calculated. During the fourth period of each SVPWM sector, the branch voltage is measured again, and another branch voltage across another transistor is measured. Using the drain-to-source resistance of the calibrated transistor and the voltage across the calibrated transistor measured during the fourth period, the phase current through the calibrated transistor is calculated. Using the other branch voltage measured during the fourth period and the drain-to-source resistance of its corresponding transistor (known from a prior SVPWM sector), the phase current through that transistor is calculated. From the two calculated phase currents, the other phase current can be calculated.

Inverter and method for measuring phase currents in an electric machine

An Emulator (EMU) configures a monitoring condition relevant with critical data of a game role, when the monitoring condition is met, the EMU transmits the critical data of the game role to a server; the server analyzes the critical data of the game role; when determining that the critical data of the game role is unusual, the server determines that the game role has used a plug-in.

Identify plug-in of EMU class internet game

Methods, apparatus and system of detecting data security are provided herein. Data for detection are acquired. Whether the data for detection are to be updated for a first time is determined. When the data for detection are to be updated for the first time, the data for detection can be updated, encrypted, and stored as first encrypted data. When the data for detection are not to be updated for the first time, the data for detection can be acquired and encrypted to provide second encrypted data. The second encrypted data are compared with the stored first encrypted data to determine whether the second encrypted data having been unauthorizedly modified. The present disclosure is simple to be implemented without relying on specific logical of a certain application. Development costs, maintenance costs and occupancy of server resources can be reduced. System performance and user experience can be improved.

Method, apparatus, and system of detecting unauthorized data modification

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Shenzhen, China

Cheng Pan Cai