Source device, content providing method using the source device, sink device and controlling method of the sink device

A method of transmitting content from a blu-ray disc player to a display device, the method comprising:

• determining a high-bandwidth digital content protection (HDCP) version supported by the display device;
• encrypting the content based on the HDCP version supported by the display device;
• and
• transmitting the encrypted content to the display device,
• wherein the encrypting comprises encrypting the content in a first HDCP version if the display device supports the first HDCP version, and converting the content by downscaling the content to reduce resolution of the content and encrypting the converted content in a second HDCP version if the display device does not support the first HDCP version.

A system for processing high-bandwidth digital content protection (HDCP) content, the system comprising:

• a display device comprising at least one processor configured to:
• receive an encrypted content, and
• decrypt and display the encrypted content;
• and
• a blu-ray disc player comprising at least one processor configured to:
• obtain information regarding an HDCP version supported by the display device from the display device,
• encrypt a content in a first HDCP version if the display device supports the first HDCP version,
• convert the content by downscaling the content to reduce resolution of the content and encrypt the converted content in a second HDCP version if the display device does not support the first HDCP version, and
• transmit the encrypted content to the display device.

A method of processing high-bandwidth digital content protection (HDCP) content, the method comprising:

• obtaining, by a blu-ray disc player, information regarding a HDCP version supported by a display device from the display device;
• encrypting, by the blu-ray disc player, a content in a first HDCP version if the display device supports the first HDCP version, and converting the content by downscaling the content to reduce resolution of the content and encrypting the converted content in a second HDCP version if the display device does not support the first HDCP version;
• transmitting, from the blu-ray disc player, the encrypted content to the display device;
• receiving, by the display device, the encrypted content;
• and
• decrypting and displaying, by the display device, the encrypted content.