Transmitter, receiver, and communication path switch method

A receiver configured to communicate with a transmitter and receives video/audio data from the transmitter, the receiver comprising:

• an AV receiving unit comprising a first receiving unit which receives video/audio data according to a first method, and a second receiving unit which receives video/audio data according to a second method with a clock signal inserted in a data signal;
• a communication unit configured to communicate with the transmitter by a first standard signal;
• a communication channel switch unit configured to receive a video clock signal through a clock terminal of an HDMI when the video/audio data is received by the first receiving unit, and to supply a second standard signal received by the clock terminal to the communication unit when the video/audio data is received by the second receiving unit, while the communication channel switch unit supplies a third standard signal output from the communication unit to an HPD/RSV terminal of the HDMI even during reception by any of the first and second receiving units;
• and
• a controller configured to control the AV receiving unit and the communication channel switch unit.

A communication channel switch method for switching a communication channel in a transmitter comprising an AV transmission unit and a communication unit which is configured to communicate with a receiver by a first standard signal, the AV transmission unit comprising a first transmission unit which transits video/audio data according to a first method and a second transmission unit which transmits video/audio data according to a second method with a clock signal inserted in a data signal, the method comprising:

• transferring a video clock signal to a clock terminal of an HDMI when the video/audio data is transmitted by the first transmission unit;
• transferring a second standard signal output from the communication unit to the clock terminal when the video/audio data is transmitted by the second transmission unit;
• and
• transferring a third standard signal received by an HPD/RSV terminal of the HDMI even during transmission by any of the first and second transmission units.

A method for switching a communication channel in a receiver comprising an AV receiving unit and a communication unit configured to communicate with a transmitter by a first standard signal, the AV receiving unit comprising a first receiving unit which receives video/audio data according to a first method and a second receiving unit which receives video/audio data according to a second method with a clock signal inserted in a data signal, the method comprising:

• receiving a video clock signal through a clock terminal of an HDMI when the video/audio data is received by the first transmission unit;
• supplying a second standard signal received by the clock terminal to the communication unit when the video/audio data is received by the second receiving unit;
• and
• supplying a third standard signal output from the communication unit to an HPD/RSV terminal of the HDMI even during reception by any of the first and second transmission units.