Abstract: An NFC antenna power taking device includes an antenna, a rectifying module, an energy storage module, and a current adjusting module; the antenna is configured to convert the received electromagnetic field energy into a first voltage, the rectifying module is configured to rectify the first voltage to obtain a second voltage, the second voltage is configured to charge the energy storage module through the current adjusting module, the current adjusting module is configured to adjust the charging current, when the second voltage has a tendency to weaken due to the weakening of the electromagnetic field, the energy storage module is configured to discharge directly to maintain the stability of power supply and ensure the normal operation of the circuit, avoiding overload of the NFC field caused by the energy storage module with large capacity getting too much energy at the moment of the NFC device entry.

Abstract: A method for confirming pairing connection of terminal devices, including: acquiring third touch slide data collected by a target second Bluetooth device via a touch sensing point thereof, if a touch slide operation is detected after a connection between the first Bluetooth device and the target second Bluetooth device is established; establishing a third touch slide variation curve device according to the third touch slide data; acquiring fourth touch slide data collected by a touch screen thereof, and establishing a fourth touch slide variation curve according to the fourth touch slide data; determining whether the third touch slide variation curve matches with the fourth touch slide variation curve or not; and disconnecting the connection with the target second Bluetooth device if the third touch slide variation curve does not match with the fourth touch slide variation curve.

Abstract: An NFC antenna power taking device includes an antenna, a rectifying module, an energy storage module, and a current adjusting module; the antenna is configured to convert the received electromagnetic field energy into a first voltage, the rectifying module is configured to rectify the first voltage to obtain a second voltage, the second voltage is configured to charge the energy storage module through the current adjusting module, the current adjusting module is configured to adjust the charging current, when the second voltage has a tendency to weaken due to the weakening of the electromagnetic field, the energy storage module is configured to discharge directly to maintain the stability of power supply and ensure the normal operation of the circuit, avoiding overload of the NFC field caused by the energy storage module with large capacity getting too much energy at the moment of the NFC device entry.

Abstract: A control system based on dynamic password and USBKEY including a dynamic password control chip, a USB control chip, a USB interface, a battery, and a detection circuit. The detection circuit is configured to output a detection signal to the dynamic password control chip when it is detected that the USB interface is connected with an external device; the dynamic password control chip is configured to enter a sleep mode when receiving a detection signal; the battery is configured to supply power to the dynamic password control chip and to reduce the power supplied to the dynamic password control chip when the dynamic password control chip enters the sleep mode.

Abstract: Disclosed are a smart card and a manufacturing method therefor, the method includes: sequentially placing a first substrate, a middle frame and a circuit board, attaching a spacer to a periphery of the circuit board, pouring glue into the middle frame and laminating the middle frame, machining a through hole in the first substrate and an extension plate to expose a contact area; and fixing a contact module on the contact area, and punching for forming.

Abstract: An NFC card emulation device including a button press confirmation circuit, a time-out determination unit, and a control circuit. The time-out determination unit is formed by adopting discrete components, such as, the second diode, the second resistor, the first resistor and the first capacitor, etc. When the NFC card emulation device approaches the card reader, the card reader supplies energy to the NFC card emulation device and charges the first capacitor by the control circuit, and when the NFC card emulation device is removed from the card reader, the control circuit realizes the timing function by the first capacitor; if, within the timing period, it is determined that the button press confirmation has been performed, it is determined that the button press confirmation is valid. Such a time-out determination unit has a simple structure and a low cost.

Abstract: A dome switch includes a first release membrane, a dome, a shim, and a second release membrane, the dome is mounted at an underside of the first release membrane, the second release membrane seals one end of a through opening of the shim, when the dome switch is mounted on a circuit board, a sealed space can be formed, ensuring that in the manufacture process of a smart card, the glue will not flow into the dome and hence the second release membrane will not be connected and adhered to the glue within the card, which may otherwise result in poor hand-tactile impression of the switch. The dome switch and the smart card with the dome switch presents good hand-tactile impression; the production rate is high and the rejection rate and the production cost are low.

Abstract: A method for confirming pairing connection of terminal devices, including: acquiring third touch slide data collected by a target second Bluetooth device via a touch sensing point thereof, if a touch slide operation is detected after a connection between the first Bluetooth device and the target second Bluetooth device is established; establishing a third touch slide variation curve device according to the third touch slide data; acquiring fourth touch slide data collected by a touch screen thereof, and establishing a fourth touch slide variation curve according to the fourth touch slide data; determining whether the third touch slide variation curve matches with the fourth touch slide variation curve or not; and disconnecting the connection with the target second Bluetooth device if the third touch slide variation curve does not match with the fourth touch slide variation curve.

Abstract: A control system based on dynamic password and USBKEY including a dynamic password control chip, a USB control chip, a USB interface, a battery, and a detection circuit. The detection circuit is configured to output a detection signal to the dynamic password control chip when it is detected that the USB interface is connected with an external device; the dynamic password control chip is configured to enter a sleep mode when receiving a detection signal; the battery is configured to supply power to the dynamic password control chip and to reduce the power supplied to the dynamic password control chip when the dynamic password control chip enters the sleep mode.

Abstract: The present application discloses a data interaction method and a data interaction device for a composite smart card device, in which, the composite smart card device includes a smart card and a U-shield in a communication connection with the smart card. The data interaction method includes: establishing a communication connection between the smart card and the terminal via the U-shield; and establishing a data security channel between the composite smart card device and a background server via the terminal to enable data interaction between the composite smart card device and the background server through the data security channel, in which, the data transmitted by the data security channel are all encrypted. Technical solutions provided by the present application can effectively improve the security of the data interaction in smart card applications.

Abstract: An NFC card emulation device including a button press confirmation circuit, a time-out determination unit, and a control circuit. The time-out determination unit is formed by adopting discrete components, such as, the second diode, the second resistor, the third resistor and the second capacitor, etc. When the NFC card emulation device approaches the card reader, the card reader supplies energy to the NFC card emulation device and charges the second capacitor by the control circuit, and when the NFC card emulation device is removed from the card reader, the control circuit realizes the timing function by the second capacitor; if, within the timing period, it is determined that the button press confirmation has been performed, it is determined that the button press confirmation is valid. Such a time-out determination unit has a simple structure and a low cost.