What does it mean when the camera on your phone says it s VGA?

The information processed by the graphics card is eventually output to the display, and the output interface of the graphics card is the bridge between the computer and the monitor, which is responsible for outputting the corresponding image signal to the display. Due to the design and manufacturing reasons, CRT displays can only accept analog signal input, which requires the graphics card to be able to input analog signals. The VGA interface is the interface that outputs analog signals on the graphics card, and the VGA (Video Graphics Array) interface is also called the D-Sub interface.

Although the LCD can directly receive digital signals, many low-end products use the VGA interface in order to match the VGA interface graphics card. The VGA connector is a D-type connector with a total of 15 empty pins on it, divided into three rows of five each. The VGA interface is the most widely used interface type on graphics cards, and most graphics cards have this interface.

At present, most computers are connected with external display devices through analog VGA interfaces, and the display image information generated digitally inside the computer is transformed into R, G, B three primary color signals and line, field synchronization signals by the digital analog converter in the graphics card, and the signal is transmitted to the display equipment by cable. In the case of analog display devices, such as analog CRT displays, the signal is sent directly to the corresponding processing circuit, which drives the control CRT to generate the image. For digital display devices such as LCD and DLP, the display equipment needs to be equipped with a corresponding AD (analog-digital) converter to convert the analog signal into a digital signal.

After the D a and A D 2 conversions, it inevitably caused some loss of image details. The VGA interface is understandable for CRT displays, but when it is used to connect a display device such as a liquid crystal, the image loss during the conversion process will cause the display effect to decrease slightly.

nonono

The upstairs had completely confused the concept.

The VGA of the mobile phone camera means that the resolution of the camera is 640 480, not its image sensor.

In fact, the full English name of VGA is Video Graphic Array, that is, display drawing array. In general, we can think of VGA as an abbreviation for 640x480 pixels with a fixed resolution. If a mobile phone is marked as a VGA lens, it means that the maximum resolution of the camera can be input is 640 480 pixels, and the product of this maximum resolution (640 480) is 307200 pixels, which means that the pixel value of this camera is 300,000.

That's why some people also call 300,000-pixel lenses VGA lenses.