Method and device for transmitting/receiving data using HDMI

A method performed in a sink device for a communication by using High Definition Media Interface (HDMI), the method comprising:

• receiving, from a source device, a write request of capability information of the source device included in a Status and Control Data Channel Structure (SCDCS);
• reading the capability information;
• and
• transmitting, to the source device, gesture information based on the capability information,
• wherein the capability information includes first information related to whether the source device supports processing the gesture information and first information related to whether the source device supports processing the gesture information and second information related to whether the source device supports raw data processing for the gesture information,
• wherein the gesture information is transmitted as a raw data format or a meta data format extracted from the raw data format, based on the second information,
• wherein the first information is included in bit 2 of a configuration field of the SCDCS,
• wherein the second information is included in bit 3 of the configuration field,
• wherein the gesture information is transmitted as the meta data format via an HDMI Consumer Electronics Control (CEC) channel, when the sink device does not support the raw data processing, and
• wherein the gesture information is transmitted as the raw data format via an HDMI Ethernet Channel (HEC), when the sink device supports the raw data processing.

A source device for a communication by using High Definition Media Interface (HDMI), the source device comprising:

• an HDMI transmitter transmitting and receiving data through the HDMI;
• and
• a controller controlling the HDMI transmitter, wherein the source device:
• requests, to a sink device, Extended Display Identification Data (EDID), when the sink device is connected;
• receives, from the sink device, the EDID including capability information of the sink device;
• and
• transmits, to the sink device, gesture information based on the capability information,
• wherein the capability information includes first information related to whether the sink device supports processing the gesture information obtained by the source device and second information related to whether the sink device supports raw data processing for the gesture information,
• wherein the first information is included in byte 6 of a Vendor-Specific Data Block (HF-VSDB),
• wherein the second information is included in byte 7 of the HF-VSDB,
• wherein the gesture information is transmitted as a raw data format or a meta data format extracted from the raw data format, based on the second information,
• wherein the gesture information is transmitted as the meta data format via an HDMI Consumer Electronics Control (CEC) channel, when the sink device does not support the raw data processing, and
• wherein the gesture information is transmitted as the raw data format via an HDMI Ethernet Channel (HEC), when the sink device supports the raw data processing.

A sink device for a communication by using High Definition Media Interface (HDMI), the sink device comprising:

• an HDMI transmitter transmitting and receiving data through the HDMI;
• and
• a controller controlling the HDMI transmitter,
• wherein the sink device:
• receives, from a source device, a write request of capability information of the source device included in an SCDCS (Status and Control Data Channel Structure);
• reads the capability information;
• and
• transmits, to the source device, gesture information based on the capability information,
• wherein the capability information includes first information related to whether the source device supports processing the gesture information obtained by the sink device and second information related to whether the source device supports raw data processing for the gesture information,
• wherein the first information is included in bit 2 of a configuration field of the SCDCS,
• wherein the second information is included in bit 3 of the configuration field,
• wherein the gesture information is transmitted as a raw data format or a meta data format extracted from the raw data format, based on the second information,
• wherein the gesture information is transmitted as the meta data format via an HDMI Consumer Electronics Control (CEC) channel, when the source device does not support the raw data processing, and
• wherein the gesture information is transmitted as the raw data format via an HDMI Ethernet Channel (HEC), when the source device supports the raw data processing.