| 摘要 |
A power supplying and receiving method of a sink device using HDMI may comprise the steps of: connecting to a source device through HDMI; receiving a +5V signal; transmitting an HPD signal; transmitting EDID information including power transfer supporting information or power transfer requesting information of the sink device; receiving a first SCDC write message including requested power characteristic information indicating a first power level, which the source device requests from the sink device; writing the requested power characteristic information to a power transfer configuration register of a SCDCS; writing, to a status flag register of the SCDCS, support power characteristic information indicating a second power level capable of being provided by the sink device; transmitting the written support power characteristic information to the source device; and transmitting the power to the source device at the second power level. |
