Display having EDID (Extended Display Identification Data) automatic burning function at first boot

Abstract

The invention relates to a display having an EDID (Extended Display Identification Data) automatic burning function at the first boot. The display is characterized by comprising main software which contains an EDID burning program and EDID data of each interface, wherein the main software is stored in an SPIFlash, I / O ports of CS#, SI, SO, WP# and SCLK in the SPIFlash are connected with I / O ports corresponding to MCU (Microprogrammed Control Unit) by a bus, and the output end of the MCU is connected with a WP / SCL / SDA bus of EEPROM (Electrically Erasable Programmable Read-Only Memory) for storing the EDID of each interface of a liquid crystal display. By using an IIC communication protocol, the EDID can automatically transfer and burn EDID preset in the MCU software to the corresponding EEPROM when the display boots for the first time, and therefore, the unmanned EDID burning is realized, the operation action is reduced, the production efficiency and the quality are improved, and the manufacturing cost is greatly lowered.

Description

technical field [0001] The invention relates to a display which automatically burns EDID when starting up for the first time. Background technique [0002] In order to allow those skilled in the art to better understand the present invention, several terms are described below: DDC refers to a bus standard for communication between a display and a host computer, and its full name is Display Data Channel. Its basic function is to collect the electronic file information of the display, such as the acceptable field frequency range, manufacturer, production date, product serial number, product model, standard display mode and its parameters, supported DDC standard category, EDID Version information and more. [0003] EDID (Extended Display Identification Data Standard) data is the standard data information that the display transmits to the host computer through DDC. According to the amount of data information, EDID is divided into 128 BYTE and 256 BYTE. Currently, the EDID data...

AI Technical Summary

Problems solved by technology

In this way, there are the following problems in the assembly line EDID programming: 1) There are many ways to close the write protection of the EDID memory chip, which is easy to cause operational troubles; Production bottleneck; 3) It is easy to choose the wrong program for burning EDID and the interface for burning EDID is easy to be wrong or missing, which affects product quality; 4) Two people are required to work together, and the burning operation time is 12-15S, which affects production efficiency , Increase manufacturing cost; 5) The existing technology is determined by manual operation, and there is a hidden danger of leakage of personnel operation

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