Data transmitting apparatus, data receiving apparatus, data transmitting method, and data receiving method

A data receiving apparatus comprising:

• a wireless communication unit that receives image information of content by wireless communication from a data transmitting apparatus that is connected;
• a first decryption unit that decrypts the received image information of content with a first decryption scheme;
• a wire communication unit that receives image information of content from the data transmitting apparatus that is connected, by wire communication;
• a second decryption unit that decrypts the received image information of content with a second decryption scheme;
• a device information obtaining unit that obtains device information of a connected device;
• an authentication unit that authenticates validity of the connected device, based on the device information obtained by the device information obtaining unit;
• and
• a control unit that performs control as to obtain the device information through the wireless communication unit, and when the validity of the connected device is authenticated by the authentication unit, receive the image information by the wireless communication unit and decrypts the image information by the first decryption unit,
• and as to obtain the device information through the wire communication unit, and when the validity of the connected device is authenticated by the authentication unit, receive the image information by the wire communication unit and decrypts the image information by the second decryption unit.

A data receiving apparatus comprising:

• a wireless communication unit that receives image information of content by wireless communication from a data transmitting apparatus that is connected;
• a first decryption unit that decrypts the received image information of content with a first decryption scheme;
• a wire communication unit that receives image information of content from the data transmitting apparatus that is connected, by wire communication;
• a second decryption unit that decrypts the received image information of content with a second decryption scheme;
• a device information transmitting unit that transmits device information of the data receiving apparatus;
• an authentication result obtaining unit that obtains authentication result of validity of the data receiving apparatus which is authenticated by the data transmitting apparatus, based on the device information transmitted from the device information transmitting unit;
• a control unit that performs control as to transmit the device information through the wireless communication unit, and when the authentication result that the receiving device is authenticated is obtained by the authentication result obtaining unit, receive the image information by the wireless communication unit and decrypt the image information by the first decryption unit,
• and as to transmit the device information through the wire communication unit, and when the authentication result that the receiving device is authenticated is obtained by the authentication result obtaining unit, receive the image information by the wire communication unit and decrypt the image information by the second decryption unit;
• and
• a display screen generating unit that generates a display screen containing the image information decrypted by the first decryption unit or the second decryption unit.

A data transmitting method comprising the steps of:

• encrypting image information of input content with a first encryption scheme;
• encrypting image information of input content with a second encryption scheme;
• determining whether to obtain device information of a connected device through a wireless communication unit that receives image information of content by wireless communication or obtain the device information through a wire communication unit that receives image information of content by wire communication, and obtaining the device information of the connected device;
• authenticating validity of a data receiving apparatus, based on the obtained device information;
• performing control as to obtain the device information through the wireless communication unit, and transmit the image information encrypted by the first encryption unit from the wireless communication unit when the validity of the data receiving apparatus is authenticated, and
• performing control as to obtain the device information through the wire communication unit, and transmit the image information encrypted by the second encryption unit from the wire communication unit when the validity of the data receiving apparatus is authenticated in the step of authenticating validity.

A data receiving method comprising the steps of:

• decrypting image information of content received from a data transmitting apparatus, with a first decryption scheme;
• decrypting image information of content received from the data transmitting apparatus, with a second decryption scheme;
• performing control as to whether to obtain device information of a connected device through a wireless communication unit that receives image information of content by wireless communication or obtain the device information through a wire communication unit that receives image information of content by wire communication;
• obtaining the device information of the connected device;
• authenticating validity of the connected device, based on the obtained device information;
• performing control as to obtain the device information through the wireless communication unit, and when the validity of the connected device is authenticated by the authentication unit, receive the image information by the wireless communication unit and decrypts the image information by the first decryption unit;
• and
• performing control as to obtain the device information through the wire communication unit, and when the validity of the connected device is authenticated by the authentication unit, receive the image information by the wire communication unit and decrypts the image information by the second decryption unit.

A data receiving method comprising the steps of:

• decrypting image information of content received from a data transmitting apparatus, with a first decryption scheme;
• decrypting image information of content received from the data transmitting apparatus, with a second decryption scheme;
• performing control as to whether to transmit device information of a data receiving apparatus through a wireless communication unit that receives image information of content by wireless communication or transmit the device information through a wire communication unit that receives image information of content by wire communication;
• transmitting the device information;
• obtaining authentication result of validity of the data receiving apparatus which is authenticated by the data transmitting apparatus, based on the transmitted device information;
• performing control as to transmit the device information through the wireless communication unit, and when the authentication result that the receiving device is authenticated is obtained in the step of obtaining authentication result, receive the image information by the wireless communication unit and decrypt the image information by the first decryption unit;
• and
• performing control as to transmit the device information through the wire communication unit, and when the authentication result that the receiving device is authenticated is obtained in the step of obtaining authentication result, receive the image information by the wire communication unit and decrypt the image information by the second decryption unit;
• and
• generating a display screen containing the image information decrypted with the first decryption scheme or the second decryption scheme.