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Method and device for sending and receiving power using hdmi

A technology of receiving power and power, applied in the field of high-definition multimedia interface transmission and reception power, and can solve problems such as small delay

Active Publication Date: 2020-08-07
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because HDMI sends video / audio from the player to the display without compressing it, there is very little delay between the source and sink devices

Method used

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  • Method and device for sending and receiving power using hdmi
  • Method and device for sending and receiving power using hdmi
  • Method and device for sending and receiving power using hdmi

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Embodiment Construction

[0054] Terms used in the present invention are commonly used terms widely used now by considering functions in the present invention, but the terms may be changed depending on intentions or usage practices of those skilled in the art or appearance of new technologies. Furthermore, applicants have arbitrarily chosen some terms in specific cases. In this case, detailed meanings of the corresponding terms will be described in corresponding parts of the description of the present invention. Therefore, the terms used in the present invention should not be understood only based on their names but based on their essential meanings and contents in this specification.

[0055] In addition, although the embodiments are described in detail with reference to the drawings and the contents described in the drawings, the present invention is not limited or limited to the embodiments.

[0056] Some embodiments of the invention are described in more detail below with reference to the accompan...

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Abstract

A method for a sink device to supply and receive power using HDMI may include the following steps: connecting to a source device through HDMI; receiving a +5V signal; sending an HPD signal; sending an EDID including power transfer support information or power transfer request information of the sink device information; receive a first SCDC write message including the requested power characteristic information indicating the first power level requested by the source device from the sink device; write the requested power characteristic information into the power transfer configuration register of the SCDCS; Writing the supported power characteristic information of the second power level provided by the device into the status flag register of the SCDCS; sending the written supported power characteristic information to the source device; and sending the power of the second power level to the source device.

Description

technical field [0001] The present invention relates to a device and method for transmitting and receiving power using a high-definition multimedia interface (HDMI), and more particularly, to a method and method for transmitting power to a P sink device (Psink) through a P source (PSource) device using HDMI Devices using this method. Background technique [0002] HDMI is an interface / standard for developing Digital Visual Interface (DVI), which is an interface standard for personal computers and displays for AV electronics. Because HDMI sends the video / audio from the player to the display without compressing it, there is very little delay between the source and sink devices. And HDMI has high format compatibility because HDMI does not require a separate decoder chip or software. In addition, HDMI can be used to simplify complex wiring between AV equipment because video signals, audio signals, and control signals are transmitted on only one cable, and HDMI provides High-ban...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/4363G09G5/00
CPCG09G5/00G09G5/008G09G2370/042G09G2370/10G09G2370/12H04N5/765H02J7/00036H02J7/342H02J7/00047G09G5/006H04N21/43635G09G2370/22H02J2207/30H04N21/426G09G3/20G09G5/12
Inventor 朴壮雄
Owner LG ELECTRONICS INC