Electronic apparatus and method for turning off firewall of electronic apparatus

A method for turning off a firewall performed by an electronic apparatus, the electronic apparatus including a signal receiver configured to receive a video signal from an external apparatus via a transmission path using a plurality of channels and a differential signal and a communication network interface to perform bi-directional communication using predetermined lines forming the transmission path, the method comprising:

• transmitting, over a control data line other than the predetermined lines to the external apparatus, in response to a determination using a first line of the predetermined lines that the electronic apparatus is connected to the external apparatus, a firewall turn-off command for requesting turning off of a firewall against the network interface in respect to the electronic apparatus being connected to the external apparatus via the transmission path;
• wherein the firewall turn-off command is transmitted using the control data line of the transmission path, and wherein the firewall turn-off command contains an internet protocol address, a port number, a MAC address and a vendor specific command;
• and the firewall against the communication network interface is automatically turned off at the external apparatus by a firewall open process in response to receipt of the firewall turn-off command at the external apparatus;
• receiving, from the external apparatus over the control data line other than the predetermined lines, a firewall turn-off response indicating that the firewall against the communication network interface is turned off;
• and
• in response to the firewall turn-off response being received over the control data line other than the predetermined lines, recognizing that the bi-directional communication using the predetermined lines forming the transmission path is now enabled and then performing the bi-directional communication with the external apparatus, wherein the communication network interface that performs bi-directional communication is formed using a reserve line representing Ether-line and an HDP line representing Ether+ line of an HDMI cable.

A method for turning off a firewall performed by an electronic apparatus, the electronic apparatus including a receiver configured to receive a video signal from an external apparatus via a transmission path using a plurality of channels and a differential signal and a network interface configured to perform bi-directional communication using predetermined lines forming the transmission path, the method comprising:

• transmitting, over a control data line other than the predetermined lines to the external apparatus, when a determination using a first line of the predetermined lines is that the electronic apparatus is connected to the external apparatus, a firewall turn-off command for requesting turning off of a firewall against the communication network interface in response to a request for the electronic apparatus to perform data transmission using the communication network interface, wherein the firewall turn-off command is transmitted using the control data line of the transmission path;
• and wherein the firewall turn-off command contain an internet protocol address, a port number, MAC address and a vendor specific command;
• and the firewall against the communication network interface is automatically turned off at the external apparatus by a firewall open process in response to receipt of the firewall turn-off command at the external apparatus;
• receiving, from the external apparatus over the control data line other than the predetermined lines, a firewall turn-off response indicating that the firewall against the communication network interface is turned off;
• and
• in response to the firewall turn-off response being received over the control data line other than the predetermined lines, recognizing that the bi-directional communication using the predetermined lines forming the transmission path is now enabled and then performing the bi-directional communication with the external apparatus;
• wherein the communication network interface that performs bi-directional communication is formed using a reserve line representing Ether-line and an HDP line representing Ether+ line of an HDMI cable.

An electronic apparatus, comprising:

• a transmitter configured to transmit a video signal to an external apparatus via a transmission path using a plurality of channels and a differential signal;
• a communication network interface configured to perform bi-directional communication using predetermined lines forming the transmission path;
• a firewall setting circuitry for setting up a firewall;
• a command receiving circuitry configured to receive a command from the external apparatus over a control data line other than the predetermined lines, wherein the firewall turn-off command is transmitted using the control data line of the transmission path;
• and
• wherein the firewall setting circuitry automatically turns off the firewall against the external apparatus by a firewall open process in response to a firewall turn-off command being received by the command receiving unit over the control data line other than the predetermined lines, the firewall turn-off command transmitted from the external apparatus in response to a determination using a first line of the predetermined lines that the electronic apparatus is connected to the external apparatus, the firewall turn-off command containing an internet protocol address, a port number, MAC address and a vendor specific command;
• and
• a response transmitting circuitry configured to transmit, over the control data line other than the predetermined lines to the external apparatus, a firewall turn-off response indicating that the firewall against the external apparatus is turned off,
• wherein the external apparatus recognizes that the bi-directional communication using the predetermined lines forming the transmission path is now enabled and then performs the bi-directional communication with the communication unit in response to the firewall turn-off response being received over the control data line other than the predetermined lines by the external apparatus, and
• the firewall setting circuitry cancels the turning off of the firewall against the external apparatus in response to a firewall turn-off completion command being received over the control data line other than the predetermined lines by the command receiving circuitry;
• wherein the communication network interface that performs bi-directional communication is formed using a reserve line representing Ether-line and an HDP line representing Ether+ line of an HDMI cable.