Patent ID: 8248530

Claim:
An electronic device comprising: a Consumer Electronic Control (CEC) device unit; and a connected-device determination unit, wherein the electronic device is capable of being connected to another electronic device having Extended Display Identification Data (EDID) information regarding capability, via a communication cable that enables transmission of video and audio data, exchange of connected-device control information, and communication of device control data, wherein the connected-device determination unit determines a vendor of the other electronic device on the basis of at least one of the EDID information and a CEC message of the CEC device unit obtained via the communication cable from the other electronic device, and the connected-device determination unit changes processing on the basis of the vendor of the device connected by the communication cable, wherein the connected-device determination unit analyzes an “ID Manufacturer Name” within the EDID information, does not set an “ID Manufacturer Name” flag when the other electronic device is not a device of a vendor that satisfies a predetermined condition, and sets the “ID Manufacturer Name” flag when the other electronic device is a device that satisfies the predetermined condition, wherein the connected-device determination unit, when it receives a “Device Vendor ID” message from the other device, analyzes the vendor ID of the “Device Vendor ID” message, does not set a “Vendor” flag when the device is not a device that satisfies a predetermined condition, and sets the “Vendor” flag when the device is a device that satisfies the predetermined condition, and wherein the connected-device determination unit does not transmit a vendor unique message via the communication cable when the “ID Manufacturer Name” flag and the “Vendor” flag have not been set, and transmits a vendor unique message via the communication cable when the “ID Manufacturer Name” flag and the “Vendor” flag have been set.