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HDMI control method and device and display equipment

An HDMI interface and control method technology, applied in the computer field, can solve the problems affecting the accuracy of the display device to identify the TMDS signal and the abnormal display of the display device, and achieve the effect of ensuring the normal display function

Active Publication Date: 2020-12-11
HISENSE VISUAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the standard HDMI interface of the display device is connected to a non-standard HDMI interface signal source device, if the user chooses to switch the display mode of the display device, it will affect the display device Identify the accuracy of TMDS signal, causing the display device to display abnormally

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  • HDMI control method and device and display equipment
  • HDMI control method and device and display equipment
  • HDMI control method and device and display equipment

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Embodiment Construction

[0037] By way of the above drawings, specific embodiments of the invention have been shown and will be described in more detail hereinafter. These drawings and written descriptions are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept for those skilled in the art by referring to specific embodiments.

[0038] The signal source device is connected to the display device through the HDMI interface. The most common HDMI connector has a total of 19pins. Among them, each definition in 19pin is shown in Table 1:

[0039] Table 1

[0040] Pin Pin definition 1 TMDS Data2+ 2 TMDS Data2 Shield 3 TMDS Data2– 4 TMDS Data1+ 5 TMDS Data1 Shield 6 TMDS Data1– 7 TMDS Data0+ 8 TMDS Data0 Shield 9 TMDS Data0– 10 TMDS Clock+ 11 TMDS Clock Shield 12 TMDS Clock– 13 CEC 14 Reserved(N.C.on device) 15 SCL 16 SDA 17 DDC / CEC Ground...

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Abstract

The invention provides an HDMI control method and device and display equipment, and the method comprises the steps: judging whether the equipment type of signal source equipment is a non-standard equipment type or not if the signal source equipment is detected to be connected into an HDMI, wherein the non-standard equipment type is that the HDMI of the signal source equipment is a non-standard TMDS interface type, and if the equipment type of the signal source equipment is judged to be the non-standard equipment type, the EDID information switching function of extended display identification data is closed. After the display equipment is connected with the signal source equipment of the non-standard equipment type, the display equipment is controlled to forbid switching of the EDID information, so that the display equipment and the signal source equipment transmit audio data and video data according to the specification defined by existing EDID information, and the normal display function of the display equipment is guaranteed.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to an HDMI interface control method, device and display device. Background technique [0002] Current display devices such as monitors and televisions all have HDMI (High Definition Multimedia Interface, high-definition multimedia interface) interfaces, and usually each HDMI interface stores EDID (Extended Display Identification Data, extended display identification data) information. Wherein, the EDID information may be stored in a program of the display device. Correspondingly, the signal source device such as a DVD player is connected to the display device through the HDMI interface, and the EDID information stored in the display device is read through the DDC (Direct Digital Control) channel of the HDMI interface. The image resolution, sound format, and sound channels supported by the display device analyze the audio information and output TMDS (Transition-minimized D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/765H04N21/4363
CPCH04N5/765H04N21/43635Y02D10/00
Inventor 孙学斌
Owner HISENSE VISUAL TECH CO LTD