Method of controlling sink device, source device, and high-definition multimedia interface (HDMI)
AssigneeLG Electronics Inc.
InventorEunkwang Jang
Life of this patent
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Abstract
The present disclosure provides a method of controlling a high-definition multimedia interface (HDMI). The method includes: reading, by a source device, extended display identification data (EDID) of a sink device when the sink device and the source device are connected; writing information about the source device in a status and control data channel (SCDC) structure; and reading, by the source device, the EDID again based on a predetermined field value included in the SCDC structure.
Claims19
A method of controlling a high-definition multimedia interface (HDMI), the method comprising:
- reading, by a source device, extended display identification data (EDID) of a sink device based on the sink device being connected to the source device by an HDMI cable;
- writing information about the source device in a Manufacturer Specific field of Status and Control Data Channel (SCDC) structure;
- setting, by the sink device, an EDID_RR field of the SCDC structure value ‘1’;
- and
- reading, by the source device, the EDID again in response to writing a specific value in the Manufacturer Specific field of the SCDC structure.
A sink device for use in connection with a high-definition multimedia interface (HDMI) cable, the sink device comprising:
- an HDMI receiver;
- and
- a controller,
- wherein the controller is configured to:
- detect whether a source device writes information about the source device in a Manufacturer Specific field of Status and Control Data Channel (SCDC) structure after the sink device is connected to the source device through the HDMI receiver;
- set an EDID_RR field of the SCDC structure value ‘1’;
- and
- check vendor information about the source device based on written information about the source device, wherein the written information is written when the source device writes the information about the source device in the Manufacturer Specific field of the SCDC structure.
A source device for use in connection with a high-definition multimedia interface (HDMI) cable, the source device comprising:
- an HDMI transmitter;
- and
- a controller, wherein the controller is configured to:
- read extended display identification data (EDID) of a sink device based on the source device being connected to a sink device through the HDMI transmitter;
- write information about the source device in a Manufacturer Specific field of Status and Control Data Channel (SCDC) structure;
- and
- read the EDID of the sink device again based on a value ‘1’ of an EDID_RR field of the SCDC structure.
Dependencies are inferred from the claim text.