VGA matrix
The information processed by the graphics card is ultimately output to the display. The output interface of the graphics card is a bridge between the computer and the display. It is responsible for outputting corresponding image signals to the display. Because of its design and manufacturing reasons, CRT monitors can only accept analog signal input. This requires the graphics card to be able to input analog signals. The VGA interface is the interface for outputting analog signals on the graphics card, and the VGA (Video Graphics Array) interface, also called the D-Sub interface. Although liquid crystal displays can directly receive digital signals, many low-end products use VGA interfaces in order to match the VGA interface cards. The VGA interface is a D-type interface with a total of 15 pins empty, divided into three rows, five in each row. The VGA interface is the most widely used type of interface on the graphics card. Most graphics cards have such an interface.
At present, most computers and external display devices are connected through an analog VGA interface. The computer internally generates digital display image information and is converted into R, G, and B primary color signals and lines by the digital/analog converters in the graphics card. Field synchronization signal, the signal is transmitted to the display device through the cable. For analog display devices, such as analog CRT displays, the signals are sent directly to the corresponding processing circuit, which drives and controls the kinescope to generate images. For LCD, DLP and other digital display devices, the corresponding A/D (Analog/Digital) converters need to be configured in the display device to convert the analog signals into digital signals. After D/A and A/D conversions, some image details are inevitably lost. It is understandable that the VGA interface is applied to a CRT display, but for connecting a display device such as a liquid crystal, the image loss during the conversion process may slightly degrade the display effect.
RGB: Matrix
The method of encoding a color is collectively referred to as "color space" or "gamut." In the simplest terms, the "color space" of any color in the world can be defined as a fixed number or variable. RGB (red, green, blue) is just one of many color spaces. With this encoding method, each color can be represented by three variables - the intensity of red, green, and blue. When recording and displaying color images, RGB is the most common solution. However, it lacks good compatibility with early black and white display systems. Therefore, a common practice adopted by multiple electronics manufacturers is to convert RGB to YUV colors to maintain compatibility, and then change back to RGB format as needed to display color graphics on a computer monitor.
The composition of the VGA signal is divided into five types: RGBHV, which are the red, green, and blue primary colors and the line field sync signals. VGA transmission distance is very short. In order to transmit farther distances in the actual project, people disconnect the VGA cable, separate the RGBHV five kinds of signals and transfer them with five coaxial cables respectively. This transmission method is called RGB transmission. This signal is also called RGB signal. In fact, there is no difference between RGB and VGA.
The RGB matrix converts VGA signals into RGB signals to implement matrix functions.
The information processed by the graphics card is ultimately output to the display. The output interface of the graphics card is a bridge between the computer and the display. It is responsible for outputting corresponding image signals to the display. Because of its design and manufacturing reasons, CRT monitors can only accept analog signal input. This requires the graphics card to be able to input analog signals. The VGA interface is the interface for outputting analog signals on the graphics card, and the VGA (Video Graphics Array) interface, also called the D-Sub interface. Although liquid crystal displays can directly receive digital signals, many low-end products use VGA interfaces in order to match the VGA interface cards. The VGA interface is a D-type interface with a total of 15 pins empty, divided into three rows, five in each row. The VGA interface is the most widely used type of interface on the graphics card. Most graphics cards have such an interface.
At present, most computers and external display devices are connected through an analog VGA interface. The computer internally generates digital display image information and is converted into R, G, and B primary color signals and lines by the digital/analog converters in the graphics card. Field synchronization signal, the signal is transmitted to the display device through the cable. For analog display devices, such as analog CRT displays, the signals are sent directly to the corresponding processing circuit, which drives and controls the kinescope to generate images. For LCD, DLP and other digital display devices, the corresponding A/D (Analog/Digital) converters need to be configured in the display device to convert the analog signals into digital signals. After D/A and A/D conversions, some image details are inevitably lost. It is understandable that the VGA interface is applied to a CRT display, but for connecting a display device such as a liquid crystal, the image loss during the conversion process may slightly degrade the display effect.
RGB: Matrix
The method of encoding a color is collectively referred to as "color space" or "gamut." In the simplest terms, the "color space" of any color in the world can be defined as a fixed number or variable. RGB (red, green, blue) is just one of many color spaces. With this encoding method, each color can be represented by three variables - the intensity of red, green, and blue. When recording and displaying color images, RGB is the most common solution. However, it lacks good compatibility with early black and white display systems. Therefore, a common practice adopted by multiple electronics manufacturers is to convert RGB to YUV colors to maintain compatibility, and then change back to RGB format as needed to display color graphics on a computer monitor.
The composition of the VGA signal is divided into five types: RGBHV, which are the red, green, and blue primary colors and the line field sync signals. VGA transmission distance is very short. In order to transmit farther distances in the actual project, people disconnect the VGA cable, separate the RGBHV five kinds of signals and transfer them with five coaxial cables respectively. This transmission method is called RGB transmission. This signal is also called RGB signal. In fact, there is no difference between RGB and VGA.
The RGB matrix converts VGA signals into RGB signals to implement matrix functions.
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