Abstract: A stylus detection method includes detecting, by a terminal, an input signal of a stylus at a first frequency, receiving a first input of the stylus through a touchscreen, detecting, in response to the first input, the input signal of the stylus at a second frequency, detecting the input signal of the stylus at a third frequency when detecting the input signal of the stylus at the second frequency and when a duration in which the terminal does not detect the input signal of the stylus is greater than a first time period. The second frequency is greater than the third frequency and the third frequency is greater than the first frequency.

Abstract: A stylus detection method includes detecting, by a terminal, an input signal of a stylus at a first frequency, receiving a first input of the stylus through a touchscreen, detecting, in response to the first input, the input signal of the stylus at a second frequency, detecting the input signal of the stylus at a third frequency when detecting the input signal of the stylus at the second frequency and when a duration in which the terminal does not detect the input signal of the stylus is greater than a first time period. The second frequency is greater than the third frequency and the third frequency is greater than the first frequency.

Abstract: Embodiment of the present invention provides a packet transmission method. The method includes: receiving an encrypted packet sent by a client by using a virtual private network (VPN) tunnel, wherein the encrypted packet is sent by the client after the client determines, according to a preset control policy, that the control policy comprises an Internet Protocol (IP) address and a port number that are the same as a destination IP address and a destination port number of a packet to be sent and encrypts the packet to be sent, and the control policy comprises information about an IP address and a port number of an intranet server that can exchange a packet with a security socket layer protocol (SSL) VPN server; decrypting the encrypted packet; and sending the decrypted packet to a corresponding intranet server, wherein a source IP address of the decrypted packet is an external network IP address.

Abstract: Embodiment of the present invention provides a packet transmission method. The method includes: receiving an encrypted packet sent by a client by using a virtual private network (VPN) tunnel, wherein the encrypted packet is sent by the client after the client determines, according to a preset control policy, that the control policy comprises an Internet Protocol (IP) address and a port number that are the same as a destination IP address and a destination port number of a packet to be sent and encrypts the packet to be sent, and the control policy comprises information about an IP address and a port number of an intranet server that can exchange a packet with a security socket layer protocol (SSL) VPN server; decrypting the encrypted packet; and sending the decrypted packet to a corresponding intranet server, wherein a source IP address of the decrypted packet is an external network IP address.