Electronic devices, method of transmitting data block, method of determining contents of transmission signal, and transmission/reception system

A first repeater device, comprising:

• circuitry configured to:
• receive first Enhanced Extended Display Identification Data (E-EDID) from a display device via a Display Data Channel (DDC) of a first High Definition Multimedia Interface (HDMI) cable;
• transmit a second E-EDID to one of a second repeater device or a transmission device via a DDC of a second HDMI cable, wherein
• the first E-EDID includes a first Vendor Specific Data Block (VSDB) and a second VSDB,
• the second VSDB includes a specific field that includes a value changeable from a first value to a second value by the first repeater device based on support of at least one extended function,
• the first VSDB includes four fields that correspond to a physical address of the first repeater device, and
• the specific field is different from each of the four fields;
• receive an output of the transmission device, based on the value of the specific field, from one of the second repeater device or the transmission device via at least one Transition Minimized Differential Signaling (TMDS) channel of the second HDMI cable;
• and
• transmit an output corresponding to the received output of the transmission device via at least one TMDS channel of the first HDMI cable.

A system, comprising:

• a display device;
• and
• a first repeater device that includes first circuitry configured to:
• receive first Enhanced Extended Display Identification Data (E-EDID) from the display device via a Display Data Channel (DDC) of a first High Definition Multimedia Interface (HDMI) cable;
• transmit a second E-EDID to one of a second repeater device or a transmission device via a DDC of a second HDMI cable, wherein
• the first E-EDID includes a first Vendor Specific Data Block (VSDB) and a second VSDB,
• the second VSDB includes a specific field having a value changeable from a first value to a second value by the first repeater device based on support of at least one extended function,
• the first VSDB includes four fields that correspond to a physical address of the first repeater device, and
• the specific field is different from each of the four fields;
• receive an output of the transmission device, based on the value of the specific field, from one of the second repeater device or the transmission device via at least one Transition Minimized Differential Signaling (TMDS) channel of the second HDMI cable;
• and
• transmit an output based on the received output of the transmission device via at least one TMDS channel of the first HDMI cable, wherein the display device includes second circuitry configured to:
• transmit the first E-EDID to the first repeater device via the DDC of the first HDMI cable;
• receive the output corresponding to the output of the transmission device from the first repeater device via the at least one TMDS channel of the first HDMI cable;
• and
• output the received output through a display screen.