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512-byte EDID circuit of HDMI2.1 and operation method

A HDMI2.1, operating method technology, applied in the direction of electrical components, instruments, selective content distribution, etc., can solve the problem that 256 bytes cannot be completely stored, and solve the problems of difficult procurement, simple peripheral circuits, and simple circuit peripherals Effect

Pending Publication Date: 2022-03-08
深圳市世纪创新显示电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned defects of the prior art, the embodiment of the present invention provides a 512-byte EDID circuit and operation method of HDMI2.1, the technical problem to be solved by the present invention is: with the development of the display industry and the Promoted, the resolution and refresh rate of the display are getting higher and higher, and the data transmission rate is also required to be higher and higher. For HDMI, the standard is relatively improved, especially the transformation from HDMI2.0 to HDMI2.1. Due to VGA, DVI, Ports such as HDMI require EDID for communication, and EDID is originally planned to be 256 bytes, and the storage address in EEPROM is specified; with the emergence of HDMI2.1, the number of bytes required is 512 bytes, 256 bytes cannot be completely stored in the relevant internal

Method used

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  • 512-byte EDID circuit of HDMI2.1 and operation method
  • 512-byte EDID circuit of HDMI2.1 and operation method
  • 512-byte EDID circuit of HDMI2.1 and operation method

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Embodiment 1

[0028] like Figure 1-7 As shown, the embodiment is specifically as follows: the present invention provides a 512-byte EDID circuit of HDMI2.1, including a SCALER chip, an HDMI terminal and a Bit Translating Bus Switch chip, and the SCALER chip is provided with an RX input circuit and a TX output circuit. Circuit, the quantity of described HDMI end is provided with two, and HDMI end is respectively HDMI2.0, HDMI2.1 simultaneously, and the quantity of described Bit Translating Bus Switch chip is provided with two, is respectively 1-Bit TranslatingBus Switch chip, 2 -Bit Translating Bus Switch chip, the 1-Bit Translating Bus Switch chip and the 2-Bit Translating Bus Switch chip are equipped with DDC memory, and the purpose of DDC memory is to store information, specifically: the RX input circuit of the SCALER chip is connected, and through HDMI2.0 and HDMI2.1 input signals are processed by SCALER and output to the screen through TX. Then any circuit of HDMI2.0 and HDMI2.1 sends ...

Embodiment 2

[0031]This embodiment provides an operation method, which is applied to a 512-byte EDID circuit of HDMI2.1 as in Embodiment 1. The run method includes the following steps:

[0032] S1: First connect the EEPROM to the SCALER, connect the HDMI, and then set the DDC memory on the 1-Bit Translating Bus Switch chip and the 2-Bit Translating Bus Switch chip, and make the built-in long byte EDID occupy the 1-Bit Translating Bus Switch chip The above two DDC memories occupy one DDC in the 2-Bit TranslatingBus Switch chip, so that the DDC memory is used to store the long byte EDID of HDMI2.1;

[0033] S2: Then connect the RX input circuit of the SCALER chip, and input the signal through HDMI2.0 and HDMI2.1, and then output it to the screen through SCALER internal processing and TX output for display, then any circuit of HDMI2.0 and HDMI2.1 receives After the signal changes, send a signal to the SCALER chip, and then start to identify the signal. After the above design and operation, t...

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Abstract

The invention discloses a 512-byte EDID (Extended Display Identification Data) circuit of HDMI2.1 (High Definition Multimedia Interface 2.1), which comprises a SCALER chip, HDMI ends and Bit Transfer Bus Switch chips, the SCALER chip is provided with an RX input circuit and a TX output circuit, the number of the HDMI ends is two, the HDMI ends are respectively HDMI2.0 and HDMI2.1, the number of the Bit Transfer Bus Switch chips is two, the Bit Transfer Bus Switch chips are respectively a 1-Bit Transfer Bus Switch chip and a 2-Bit Transfer Bus Switch chip, and the 1-Bit Transfer Bus Switch chip and the 2-Bit Transfer Bus Switch chip are respectively provided with a DDC (Direct Digital Control) memory. The peripheral circuit is simple, economical and practical, the trouble that long-byte EEPROM storage is difficult to purchase is solved, the circuit is simple in periphery, economical and practical, and the trouble that long-byte EEPROM storage is difficult to purchase is solved.

Description

technical field [0001] The present invention relates to the display industry field, and more specifically, the present invention relates to a 512-byte EDID circuit of HDMI2.1, and also relates to an operating method of the 512-byte EDID circuit of HDMI2.1. Background technique [0002] Liquid crystal display is an integrated product of optics, semiconductor, electronic engineering, chemical industry and polymer materials. The required technology covers a wide range of fields and has high technical content. It is a typical capital-intensive, technology-intensive and manpower-intensive industry. [0003] With the development of the display industry and the promotion of e-sports display, the resolution and refresh rate of the display are getting higher and higher, and the data transmission rate is also required to be higher and higher. For HDMI, the standard is relatively higher, especially HDMI2.0 to The transformation of HDMI2.1, because VGA, DVI, HDMI and other ports need ED...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/4363G09G3/36
CPCH04N21/43635G09G3/36G09G2370/047G09G2370/12
Inventor 徐世立徐永亮黎旭沈峻
Owner 深圳市世纪创新显示电子有限公司