Compatibility improvement method for HDMI, storage medium, device and system

Abstract

The invention discloses a compatibility improvement method, equipment and system for an HDMI (High Definition Multimedia Interface), and a storage medium, and relates to the technical field of the HDMI. The method comprises the following steps of: reading an EDID (Extended Display Identifier) to be analyzed of the display equipment; the condition I being defined as that the to-be-analyzed EDID has a non-standard time sequence; the second definition being that the bandwidth of the resolution supported by the display equipment is greater than the maximum bandwidth of the HDMI intermediate equipment; if the to-be-analyzed EDID accords with the condition 1, modifying the time sequence of the to-be-analyzed EDID into an HDMI standard time sequence, and forwarding the HDMI standard time sequence to the input source equipment; if the EDID to be analyzed accords with the condition 2, modifying a color depth sampling format and a color format of which the resolution is greater than the maximum bandwidth of the HDMI intermediate equipment in the EDID to be analyzed to be within a supported bandwidth range; and sending the modified EDID to the input source equipment. According to the invention, the input source equipment outputs the picture which is compatible with the HDMI intermediate equipment and the display equipment and has the lowest influence on the display effect according to the content described by the processed EDID, so that the compatibility of HDMI equipment of various different models is realized.

Description

technical field [0001] The present invention relates to the technical field of HDMI, in particular to a compatibility improvement method, storage medium, equipment and system for HDMI. Background technique [0002] HDMI (High Definition Multimedia Interface, all-digital high-definition multimedia interface) is used to send uncompressed audio and video signals. It benefits from using only one new material to transmit audio and video at the same time, which greatly simplifies the audio and video system. Difficulty of installation. With the development of society, HDMI has become the most widely used multimedia digital interface with the highest market share. [0003] HDMI devices include source device (Source Device) and display device (Display Device-sinkdevice). After the input source device and display device are connected by HDMI cable, there will be the following steps before the normal image output: [0004] S1. Hot plug detection (Hot Plug Detect); [0005] S2. EDID ...

AI Technical Summary

Problems solved by technology

[0011] 1. If the EDID of the display device has a custom HDMI timing (Timing) that does not refer to the VESA and CTA association regulations, some input source devices or HDMI intermediate devices cannot correctly parse this type of EDID, which will lead to abnormal final output images

[0012] 2. If the resolution supported by the display device is greater than the resolution supported by the HDMI intermediate device, the image will not be output normally after passing through the HDMI intermediate device.

[0015] The HDMI intermediate device directly replaces a default EDID and forwards it to the input source device. If there is a large difference between the default EDID and the display device EDID, the display device cannot receive and parse the audio and video information input by the input source device.

[0016] It can be seen that the existing HDMI intermediate equipment is difficult to be compatible with a variety of different types of HDMI equipment, and the compatibility is poor.

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