EDID是Extended Display Identification Data的缩写,意为扩展显示标识数据,符合VESA标准数据格式。通常存储在显示器的固件中,标识供应商信息、最大图像大小、颜色设置、厂商预设置、频率范围的限制以及显示器名和序列号的字符串。EDID从诞生至今,已经经历了多次的版本更迭,关于版本信息可以在EDID的字符串中获得。
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SNwQTMyEzNhFDMhBTOhlzY1MmYhZmYzIDM5EGZhZWYy8CX0JXZ252bj91Ztl2Lc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
EDID由128Bytes主块和128Bytes的扩展块组成,按照EDID协议标准每固定bytes为一组,标识特定的信息。
例如,对电脑的EDID解析结果如下:
//Displaying Monitor EDID//
128 bytes EDID Data (Hex):
0 1 2 3 4 5 6 7 8 9
0: 00 FF FF FF FF FF FF 00 09 E5
10: B9 08 00 00 00 00 1E 1D 01 04
20: A5 22 13 78 03 BB 85 A5 55 4F
30: 9F 27 0F 50 54 00 00 00 01 01
40: 01 01 01 01 01 01 01 01 01 01
50: 01 01 01 01 99 3B 80 10 71 38
60: 50 40 30 20 36 00 58 C2 10 00
70: 00 1A 00 00 00 00 00 00 00 00
80: 00 00 00 00 00 00 00 00 00 00
90: 00 00 00 FE 00 42 4F 45 20 43
100: 51 0A 20 20 20 20 20 20 00 00
110: 00 FE 00 4E 56 31 35 36 46 48
120: 4D 2D 4E 36 39 0A 00 EA
Decoded EDID data
<---Header--->
Header: 00 FF FF FF FF FF FF 00
<-x-Header-x->
<---Vendor/Product Identification--->
ID Manufacturer Name: BOE
ID Product Code: 2233
ID Serial Number: 00000000
Week of Manufacture: 30
Year of Manufacture: 2019
<-x-Vendor/Product Identification-x->
<---EDID Structure Version/Revision--->
EDID Version#: 1
EDID Revision#: 4
<-x-EDID Structure Version/Revision-x->
<---Basic Display Parameters/Features--->
Video i/p definition: Analog
Setup: Blank-to-Black not expected
Seperate Syncs. support: No
Composite Sync. support: Yes
Vsync. Pulse: serration not required
Max Horz Image Size: 34 cm.
Max Vert Image Size: 19 cm.
Display Gamma: 2.2
Display Type: Monochrome
Standard Default Color Space: No
Features, Preferred Timing Mode: In first detailed block
Features, GTF support: Yes
DPMS Features, Stand-by: No
DPMS Features, Suspend: No
DPMS Features, Active Off: No
<-x-Basic Display Parameters/Features-x->
<---Color Characteristics--->
Red x: 0.646484
Red y: 0.334961
Green x: 0.310547
Green y: 0.624023
Blue x: 0.154297
Blue y: 5.85938e-002
White x: 0.313477
White y: 0.329102
<-x-Color Characteristics-x->
<---Established Timings--->
Established Timimgs 1: 00
Established Timimgs 2: 00
Established Timings 3: 00
<-x-Established Timings-x->
<---Standard Timing Identification--->
<-x-Standard Timing Identification-x->
<---Detailed Timing Descriptions--->
Detailed Timing: 1920x1080 @60Hz
Detailed Timing:00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Detailed Timing: FE (Monitor string) 'BOE CQ'
Detailed Timing: FE (Monitor string) 'NV156FHM-N69'
<-x-Detailed Timing Descriptions-x->
Extension Flag: 00
Checksum: EA