Transmission method and apparatus based on HDMI device

A technology of transmission method and transmission device, which is applied to parts of color TV, parts of TV system, TV, etc.

Inactive Publication Date: 2017-11-07
ACTIONS ZHUHAI TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Embodiments of the present invention provide a transmission method and device based o...

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  • Transmission method and apparatus based on HDMI device
  • Transmission method and apparatus based on HDMI device
  • Transmission method and apparatus based on HDMI device

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Embodiment Construction

[0063] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0064] In order to solve the problem of HDMI transmission compatibility that may occur in the prior art, in the embodiment of the present invention, when the HDMI Source end sends the TMDS signal to the HDMI Sink end, it acquires the state of the TMDS signal returned by the HDMI Sink end. When the state of the TMDS signal When the number of consecutive abnormalities is greater than the set threshold, the preset transmission list is traversed unt...

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Abstract

The invention relates to the field of HDMI, and particularly relates to a transmission method and apparatus based on an HDMI device. The method comprises the following steps: sending a TMDS signal to an HDMI Sink end by an HDMI Source end based on a first HDMI PHY configuration parameter, and obtaining the state of the TMDS signal in the HDMI Sink end; when it is determined that the state of the TMDS signal is abnormal, judging whether the times of continuous abnormality of the state of the TMDS signal are greater than a preset threshold, when it is determined that the times of continuous abnormality of the state of the TMDS signal are greater than the preset threshold, traversing a preset transmission list to select a second HDMI PHY configuration parameter, and sending the TMDS signal to the HDMI Sink end based on the second HDMI PHY configuration parameter, wherein the second HDMI PHY configuration parameter is a configuration parameter corresponding to the normal state of the TMDS signal. Therefore, the TMDS signal can be adjusted conveniently and flexibly, and the problem of transmission compatibility is solved.

Description

technical field [0001] The present invention relates to the field of HDMI, in particular to a transmission method and device based on HDMI equipment. Background technique [0002] High-Definition Multimedia Interface (High-Definition Multimedia Interface, HDMI) is a digital multimedia interface, widely used in audio and video equipment, it can transmit audio and video signals simultaneously through a data cable, has become the standard of current multimedia equipment With interface. [0003] When the HDMI sending end (Source end) and the HDMI receiving end (Sink end) based on the HDMI device perform signal transmission, the communication parties must first perform a hot plug detection (Hot Plug Detect, HPD) handshake, and then the HDMI Source end reads the HDMI Sink The extended display identification data (Extended Display Identification Data, EDID) information of the end is analyzed and analyzed, and finally based on the analysis result, the audio and video format support...

Claims

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Application Information

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IPC IPC(8): H04N5/765
CPCH04N5/765
Inventor 耿阿囡
Owner ACTIONS ZHUHAI TECH CO
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