Method and apparatus for transmitting and receiving data using HDMI

摘要

A method for switching mode of a source device that uses a High Definition Multimedia Interface (HDMI) according to an embodiment of the present invention may include connecting to a sink device through the HDMI; transmitting +5V signal to the sink device; receiving a Hot Plug Detect (HPD) signal from the sink device; receiving EDID information including a first Sideband mode support information representing that the sink device supports a Sideband mode through a Display Data Channel (DDC) channel that operates in a DDC mode; transmitting a second Sideband mode support information representing that the source device supports a Sideband mode to the sink device; receiving instruction to perform an operation mode switching of the DDC channel from the sink device; and switching the operation mode of the DDC channel from the DDC mode to the Sideband mode.

主权项

1. A method for switching mode of a source device that uses a High Definition Multimedia Interface (HDMI), comprising:
connecting to a sink device through the HDMI; transmitting +5V signal to the sink device; receiving a Hot Plug Detect (HPD) signal from the sink device; receiving EDID (Extended Display Identification Data) information including a first Sideband mode support information through a Display Data Channel (DDC) channel that operates in a DDC mode, wherein the first Sideband mode support information indicates that the sink device supports a Sideband mode; transmitting a second Sideband mode support information to the sink device, wherein the second Sideband mode indicates that the source device supports the Sideband mode; receiving instruction to switch an operation mode of the DDC channel from the sink device; and switching the operation mode of the DDC channel from the DDC mode to the Sideband mode.