Cable, method of controlling cable, connection device, electronic device, and method of controlling electronic device

1. A device for connection to a first electronic device and a second electronic device, the device comprising:

circuitry configured to:

determine the first electronic device is one of a compatible electronic device or a non-compatible electronic device;

control the device to:

operate in a compatible mode based on the determination that the first electronic device is the compatible electronic device; and

operate in a non-compatible mode based on the determination that the first electronic device is the non-compatible electronic device; and

connect to the first electronic device via a plurality of lines.

2. The device according to claim 1 , wherein the plurality of lines are lines of a High-Definition Multimedia Interface (HDMI) cable.

3. The device according to claim 2 , wherein the circuitry is further configured to control a communication between the device and the first electronic device at least through a utility line of the HDMI cable based on the determination that the first electronic device is one of the compatible electronic device or the non-compatible electronic device.

4. The device according to claim 3 , wherein a communication between the first electronic device and the second electronic device includes high-bandwidth digital content protection (HDCP) communication based on a display data channel (DDC) line of the HDMI cable.

5. The device according to claim 3 , further comprising a register configured for access from the first electronic device through a display data channel (DDC) line of the HDMI cable.

6. The device according to claim 5 , wherein the circuitry is further configured to control the first electronic device to access the register in the compatible mode.

7. The device according to claim 3 , wherein the circuitry is further configured to:

monitor a voltage of a +5 V power line; and

determine disconnection of the device from the first electronic device based on decrease in the voltage of the +5 V power line.

8. The device according to claim 3 , wherein

the first electronic device is a data transmission device for transmission of content data, and

the second electronic device is a data reproduction device for reproduction of the content data.

9. The device according to claim 1 , wherein

the circuitry is further configured to determine that the first electronic device is the compatible electronic device based on a voltage monitoring result of at least one line, and

the at least one line corresponds to a line at which a voltage is applied via a voltage dividing resistor.

10. The device according to claim 1 , wherein

the device is on a cable, and

the cable is for connection between the first electronic device and the second electronic device.

11. An electronic device for connection to an external device via a connection device, the electronic device comprising:

circuitry configured to:

determine the connection device is one of a compatible connection device or a non-compatible connection device;

control the electronic device to:

operate in a compatible mode based on the determination that the connection device is the compatible connection device; and

operate in a non-compatible mode based on the determination that the connection device is the non-compatible connection device; and

connect to the connection device via a plurality of lines.

12. The electronic device according to claim 11 , wherein the plurality of lines are lines of a High-Definition Multimedia Interface (HDMI) cable.

13. The electronic device according to claim 12 , wherein the circuitry is further configured to control a communication between the electronic device and the connection device at least through a utility line of the HDMI cable based on the determination that the connection device is one of the compatible connection device or the non-compatible connection device.

14. The electronic device according to claim 13 , wherein the circuitry is further configured to perform high-bandwidth Digital Content Protection (HDCP) communication with the external device through a Display Data Channel (DDC) line of the HDMI cable.

15. The electronic device according to claim 13 , wherein the circuitry is further configured to access a register of the connection device through a Display Data Channel (DDC) line of the HDMI cable.

16. The electronic device according to claim 15 , wherein the circuitry is further configured to access the register in the compatible mode.

17. The electronic device according to claim 13 , wherein the circuitry is further configured to:

detect a voltage level of a Hot Plug Detect (HPD) line of the HDMI cable; and

determine the connection device is one of the compatible connection device or the non-compatible connection device based on the voltage level of the HPD line.

18. The electronic device according to claim 13 , wherein the electronic device is for connection to the connection device through a cable having a Lane 0 , a Lane 1 , a Lane 2 , and a Lane 3 .

19. The electronic device according to claim 13 , wherein

the connection device is a repeater device, and

the repeater device is for connection between the electronic device and the external device.

20. The electronic device according to claim 11 , wherein

the connection device is on a cable, and

the cable is for connection between the electronic device and the external device.