Source device and method of transmitting content

A method of transmitting content to a sink device from an intermediate transmission device, the method comprising:

• obtaining information related to a version of a content protection technique supported by the sink device;
• setting type information related to the content protection technique, to a first value for allowing the intermediate transmission device to transmit the content to the sink device, if the version of the content protection technique supported by the sink device is different than a version of the content protection technique applied to the content;
• and
• transmitting the content and the type information set to the first value related to the content protection technique to the intermediate transmission device,
• wherein the type information is set to one of the first value and a second value to be used by the intermediate transmission device to determine whether the intermediate transmission device is allowed to transmit the content received from a source device to the sink device, based on the version of the content protection technique supported by the sink device.

A source device configured to transmit content to a sink device via an intermediate transmission device, the source device comprising:

• a communicator comprising communication circuitry;
• and
• a controller configured to:
• obtain information related to a version of a content protection technique supported by the sink device,
• change type information related to the content protection technique to a first value for allowing the intermediate transmission device to transmit the content to the sink device, if the version of the content protection technique supported by the sink device is different than a version of the content protection technique applied to the content, and
• transmit, via the communicator, the content and the type information set to the first value to the intermediate transmission device,
• wherein the type information related to the content protection technique is set to one of the first value and a second value and comprises information for the intermediate transmission device to determine whether the content received from the source device is to be output to the sink device by the intermediate transmission device, based on the version of the content protection technique supported by the sink device.

A method of transmitting content to a sink device from an intermediate transmission device, the method comprising:

• obtaining information related to a version of a content protection technique supported by the sink device;
• changing type information related to the content protection technique to a first value for allowing the intermediate transmission device to transmit the content to the sink device, if the version of the content protection technique supported by the sink device is different than a version of the content protection technique applied to the content;
• and
• transmitting the content and the type information set to the first value to the intermediate transmission device,
• wherein the type information related to the content protection technique is set to one of the first value and a second value and comprises information for the intermediate transmission device to determine whether the content received from a source device is to be output to the sink device by the intermediate transmission device, based on the version of the content protection technique supported by the sink device.