A structure protects a SLIC telephone line interface against overvoltages lower than a negative threshold or higher than a positive threshold. The structure includes at least one thyristor connected between each conductor of the telephone line and a reference potential. For all of the included thyristors, a metallization corresponding to the main electrode on the gate side is in contact, by its entire surface, with a corresponding semiconductor region. Furthermore, the gate of each thyristor is directly connected to a voltage source defining one of the thresholds.

A structure protects a SLIC telephone line interface against overvoltages lower than a negative threshold or higher than a positive threshold. The structure includes at least one thyristor connected between each conductor of the telephone line and a reference potential. For all of the included thyristors, a metallization corresponding to the main electrode on the gate side is in contact, by its entire surface, with a corresponding semiconductor region. Furthermore, the gate of each thyristor is directly connected to a voltage source defining one of the thresholds.

The present disclosure discloses a wireless charging device, system, and method based on a back cover mobile power supply. The wireless charging system includes a wireless charger, a back cover mobile power supply, and an intelligent terminal. The intelligent terminal is provided with a main battery and a wireless charging device. A built-in induction coil is powered and generates an electromagnetic field when a wireless charger is powered on. The back cover mobile power supply inducts the electromagnetic field and generates a current to the wireless charging device. The intelligent terminal and the back cover mobile power supply are controlled to enter a charging state, and a charging current is transmitted to the main battery of the intelligent terminal and the back cover mobile power supply, respectively, so as to perform charging, when the current is detected by the wireless charging device.

Power consumption by an electronic device carried by a user is to be reduced.

The electronic device includes a detection unit, a simplified analysis unit, and a detailed analysis unit. The detection unit detects the presence/absence of movement of the electronic device. A power control unit starts a supply of electric power when there is movement in the electronic device. The simplified analysis unit performs a simplified analysis process while consuming the electric power, the simplified analysis process being a process of analyzing the data obtained from the electronic device. In accordance with an analysis result of the simplified analysis process, the detailed analysis unit performs a detailed analysis process while consuming the electric power, the detailed analysis process being a different process from the simplified analysis process.

A system comprising customer premises equipment including a reverse power supply unit and an access node to which the customer premises equipment is connected for permitting telephony devices connected to the customer premises equipment to make and receive telephone calls via the customer premises equipment and the access node. The reverse power supply unit is suitable for supplying electrical power from the customer's premises to an access node via a twisted copper pair, the reverse power supply unit including a power consumption signature detector operable to detect if the power drawn from the reverse power supply unit corresponds to a signature power consumption pattern indicative of a telephony device being in or transitioning into an off-hook state when connected directly to the reverse power supply unit and not being connected via a current limiting interface.

A system comprising customer premises equipment including a reverse power supply unit and an access node to which the customer premises equipment is connected for permitting telephony devices connected to the customer premises equipment to make and receive telephone calls via the customer premises equipment and the access node. The reverse power supply unit is suitable for supplying electrical power from the customer's premises to an access node via a twisted copper pair, the reverse power supply unit including a power consumption signature detector operable to detect if the power drawn from the reverse power supply unit corresponds to a signature power consumption pattern indicative of a telephony device being in or transitioning into an off-hook state when connected directly to the reverse power supply unit and not being connected via a current limiting interface.

The invention relates to the technical field of electronic communication, and more particularly, to an electronic device. A voice assistant extension device, comprising: a sound capturing module for capturing sound information; a processing module, connected to the sound capturing module, for processing the sound information so as to acquire instruction information; and a data communication module, connected to the processing module, for realizing data communication with a mobile terminal in a wired or wireless manner, and for sending the instruction information to the mobile terminal or for receiving voice information to be played from the mobile terminal. By implementing the above technical solution of the present invention, convenience of using a voice assistant in enclosed space, such as at home, in vehicles and in offices, can be improved greatly, thereby overcoming limitations of the voice assistant, and thus improving user experience of the voice assistant.

The invention relates to the technical field of electronic communication, and more particularly, to an electronic device. A voice assistant extension device, comprising: a sound capturing module for capturing sound information; a processing module, connected to the sound capturing module, for processing the sound information so as to acquire instruction information; and a data communication module, connected to the processing module, for realizing data communication with a mobile terminal in a wired or wireless manner, and for sending the instruction information to the mobile terminal or for receiving voice information to be played from the mobile terminal. By implementing the above technical solution of the present invention, convenience of using a voice assistant in enclosed space, such as at home, in vehicles and in offices, can be improved greatly, thereby overcoming limitations of the voice assistant, and thus improving user experience of the voice assistant.

Reverse powering equipment includes: a power supply module, configured to supply power resources to a distribution point unit by using a line; a switch, configured to control whether the power supply module supplies power; a line test module, configured to: when the switch is opened and the power supply module does not supply power, test whether a user terminal is connected to the line; and a system control module, configured to send an alarm signal when the line test module determines that a user terminal exists on the line, and after a user disconnects the user terminal, control the switch to be closed and the power supply module to supply power. The reverse powering equipment can prevent the user terminal from being damaged.

Reverse powering equipment includes: a power supply module, configured to supply power resources to a distribution point unit by using a line; a switch, configured to control whether the power supply module supplies power; a line test module, configured to: when the switch is opened and the power supply module does not supply power, test whether a user terminal is connected to the line; and a system control module, configured to send an alarm signal when the line test module determines that a user terminal exists on the line, and after a user disconnects the user terminal, control the switch to be closed and the power supply module to supply power. The reverse powering equipment can prevent the user terminal from being damaged.