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Method and system for changing extension display identifier data information

A technology that expands the display of logos and data information. It is applied to parts of TV systems, image communications, and parts of color TVs. It can solve the problem of inability to dynamically change EDID data information, and achieve the effect of convenient change.

Inactive Publication Date: 2017-05-10
GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a method and system that can dynamically change EDID data information to solve the problem that the existing technology cannot dynamically change EDID data information

Method used

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  • Method and system for changing extension display identifier data information
  • Method and system for changing extension display identifier data information

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Embodiment Construction

[0019] EDID (Extended Display Identification Data, extended display identification data) is a VESA (Video Electronics Standards Association, Video Electronics Standards Association) standard data format, which contains the basic parameters of the display device, including supplier information, maximum image size, color settings , factory presets, frequency range limits, and strings for display name and serial number. DDC (Display Data Channel, display data channel) is mainly used for EDID data and HDCP (High-bandwidth Digital Content Protection, high-bandwidth digital content protection technology) key exchange between HDMI source equipment and receiver equipment, and can be used for host Communication with the display device, EDID includes the display device data transmitted in the DDC communication, the data information of the display device is stored in the EDID byte, and communicates with the host through DDC.

[0020] In one embodiment, such as figure 1 As shown, a metho...

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Abstract

The invention relates to a method and system for changing extension display identifier data information. The method comprises the following steps: firstly obtaining attributes and attribute parameters of to-be-modified contents, searching an address of the to-be-modified contents in the extension display identifier data information according to the attributes of the to-be-modified contents, then when extension display identifier data corresponding to the to-be-modified contents can be modified, converting the attribute parameters of the to-be-modified contents into binary numerical values according to an extension display identifier data standard, writing the binary numerical values in the address corresponding to the extension display identifier data, and supplementing the extension display identifier data information to obtain the changed extension display identifier data information. By adoption of the method and system for changing the extension display identifier data information, the extension display identifier data information can be modified dynamically, and users can conveniently modify the extension display identifier data information.

Description

technical field [0001] The invention relates to the technical field of digital multimedia, in particular to a method and system for changing extended display identification data information. Background technique [0002] With the rapid development of current digital technology, most digital video devices are equipped with HDMI (High Definition Multimedia Interface, high-definition multimedia interface). HDMI interface is a digital signal interface commonly used in audio and video sending and receiving equipment. According to the requirements of the HDMI standard, the interface requires a set of EDID (Extended Display Identification Data, extended display identification data). EDID is a VESA (VideoElectronics Standards Association, Video Electronics Standards Association) standard data format that contains parameters about monitors and their performance, including vendor information, maximum image size, color settings, manufacturer presets, frequency range limitations and st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/765H04N5/445
CPCH04N5/765H04N5/44504
Inventor 范宝驹
Owner GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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