loughborough
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In order to achieve faster data transmission, current electronic devices improve accordingly. For example, the previous HDMI cable is expected to reach the standard of 8K, and the projected S-Video interface is also for faster data transmission.
What is S-Video input (S-Video)
The specific full name of S-Video is Separate Video . In order to achieve better video effects, people began to seek a faster, better, and higher-definition video transmission method. This is S-Video (also known as two-component video). Interface) .
S-Video (S-Video) was once one of the most commonly used video interfaces, and is a dedicated output interface for video signals . The common S terminal is a 5-core interface, two of which transmit video brightness signals, two of which transmit chrominance signals, and one of which is a common shielded ground. And the steps of input switching and matrix decoding in the TV set can effectively prevent mutual crosstalk of the composite output of the luminance and chrominance signals, and improve the clarity of the image.
The meaning of the S-Video (S-Video) is to separate the video signal , that is , to separate the chrominance signal C and the luminance signal Y on the basis of the AV interface, and then transmit them through different channels. In the late 1990s, the standard 4-core (without sound effects) or the extended 7-core (with sound effects) were usually used. Graphics cards and video equipment with S-Video interface (such as analog video capture / editing card TV and quasi-professional monitor TV card / TV box and video projection equipment, etc.) have been relatively common in the early 21st century.
Compared with the AV interface, since the S-Video no longer performs Y / C mixed transmission, there is no need for bright color separation and decoding. Moreover, the use of independent transmission channels avoids image distortion caused by signal crosstalk in video equipment to a great extent, and greatly improves the clarity of images. But S-Video still has to mix two color difference signals (Cr Cb) into one color signal C for transmission. Then decode it into Cb and Cr for processing in the display device, which will still bring a certain signal loss and produce distortion (this distortion is very small, but it can still be found when tested under strict broadcast-level video equipment), and Due to the mixing of Cr Cb, the bandwidth of the chroma signal is also limited, so although S-Video is already excellent, it is far from perfect. Although S-Video is not the best, but before the popularization of high-definition interfaces such as VGA, HDMI, etc., taking into account other factors such as market conditions and comprehensive costs, it is still the most commonly used video interface.
Generally, DVD or VCD, TV, and PC all have S-terminal output function, and the projector can be connected to the corresponding terminals of these devices for video input through a dedicated S-terminal cable.
Summary
In order to achieve better video effects, people began to seek a faster, better, and higher definition video transmission method. This is the current S-Video (also known as two-component video interface), and the meaning of Separate Video is The video signal is transmitted separately, that is, the chrominance signal C and the luminance signal Y are separated on the basis of the AV interface, and then transmitted through different channels.
The standard S-Video interface and plug S-Video Chinese name is generally called S terminal, including 4 cores (without audio output), 5 cores, 6 cores, 7 cores, 8 cores, 9 cores (can provide 6 channels of Signal output), it will usually appear on the projector. If you don't carefully distinguish it, it will be mistaken as the PS2 interface of the computer.
The above is a detailed explanation of the S-Video interface about projector. Although the name looks strange, is this explanation easier to understand?
What is S-Video input (S-Video)
The specific full name of S-Video is Separate Video . In order to achieve better video effects, people began to seek a faster, better, and higher-definition video transmission method. This is S-Video (also known as two-component video). Interface) .
S-Video (S-Video) was once one of the most commonly used video interfaces, and is a dedicated output interface for video signals . The common S terminal is a 5-core interface, two of which transmit video brightness signals, two of which transmit chrominance signals, and one of which is a common shielded ground. And the steps of input switching and matrix decoding in the TV set can effectively prevent mutual crosstalk of the composite output of the luminance and chrominance signals, and improve the clarity of the image.
The meaning of the S-Video (S-Video) is to separate the video signal , that is , to separate the chrominance signal C and the luminance signal Y on the basis of the AV interface, and then transmit them through different channels. In the late 1990s, the standard 4-core (without sound effects) or the extended 7-core (with sound effects) were usually used. Graphics cards and video equipment with S-Video interface (such as analog video capture / editing card TV and quasi-professional monitor TV card / TV box and video projection equipment, etc.) have been relatively common in the early 21st century.
Compared with the AV interface, since the S-Video no longer performs Y / C mixed transmission, there is no need for bright color separation and decoding. Moreover, the use of independent transmission channels avoids image distortion caused by signal crosstalk in video equipment to a great extent, and greatly improves the clarity of images. But S-Video still has to mix two color difference signals (Cr Cb) into one color signal C for transmission. Then decode it into Cb and Cr for processing in the display device, which will still bring a certain signal loss and produce distortion (this distortion is very small, but it can still be found when tested under strict broadcast-level video equipment), and Due to the mixing of Cr Cb, the bandwidth of the chroma signal is also limited, so although S-Video is already excellent, it is far from perfect. Although S-Video is not the best, but before the popularization of high-definition interfaces such as VGA, HDMI, etc., taking into account other factors such as market conditions and comprehensive costs, it is still the most commonly used video interface.
Generally, DVD or VCD, TV, and PC all have S-terminal output function, and the projector can be connected to the corresponding terminals of these devices for video input through a dedicated S-terminal cable.
Summary
In order to achieve better video effects, people began to seek a faster, better, and higher definition video transmission method. This is the current S-Video (also known as two-component video interface), and the meaning of Separate Video is The video signal is transmitted separately, that is, the chrominance signal C and the luminance signal Y are separated on the basis of the AV interface, and then transmitted through different channels.
The standard S-Video interface and plug S-Video Chinese name is generally called S terminal, including 4 cores (without audio output), 5 cores, 6 cores, 7 cores, 8 cores, 9 cores (can provide 6 channels of Signal output), it will usually appear on the projector. If you don't carefully distinguish it, it will be mistaken as the PS2 interface of the computer.
The above is a detailed explanation of the S-Video interface about projector. Although the name looks strange, is this explanation easier to understand?
