0475891001

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0475891001 Application Field And Working Principle

USB, DVI, and HDMI connectors have increasingly become some of the most essential pieces of technology for connecting various devices. They are essential in visually connecting devices to computers, gaming consoles, and other digital media devices, allowing access to audio and/or visual content. This article will explain the application fields and working principles of these three kinds of connectors.

Universal Serial Bus (USB)

The USB connector is the industry-standard connection for attaching peripheral devices to computers. They are used to transfer data between a computer and a peripheral device, or between two computers. As of April 2021, the USB3.2 had reached its seventh version. USBs can be found on desktop computers and laptop computers, and are also used with digital cameras, digital video players, scanners, digital audio players, and video game consoles. USBs come in a variety of shapes and sizes, ranging from 2.0 (type A) to USB-C (type C).

The USB standard defines its electrical and mechanical characteristics, such as the number of power and data pins, and the cable length. It also defines the types of data that can be transferred over the USB connection. USBs use the data connection and transfer protocol known as USB (universal serial bus) transfers. This protocol works by transferring data from a host computer or device to another picture, at clock speeds ranging from low-speed (1.5 Mbps) to high-speed (480 Mbps).

Digital Visual Interface (DVI)

The Digital Visual Interface (DVI) is a video interface used to connect digital visual devices, such as LCDs and CRTs, to computers. DVI connectors are used to transfer uncompressed video data and support HDTV resolution up to 1080i. They are also used to connect displays to video cards, video switchers, and other AV equipment. DVI connectors come in a variety of sizes, ranging from DVI-A to DVI-D, and with a variety of cable lengths.

The DVI connector provides a digital signal connection between the video card and the display device, eliminating the need for a separate analog video connection. A DVI connection carries both digital and analog signals, so it is still compatible with analog displays. DVI connections can support up to 1920 x 1200 resolution at 60Hz, and up to 2560 x 1600 resolution when using a DVI-D Dual Link connection. The DVI connector also supports HDCP (High-Bandwidth Digital Content Protection) to protect digital audio/video content.

High-Definition Multimedia Interface (HDMI)

The High-Definition Multimedia Interface (HDMI) is a modern derivative of the DVI connector, and is widely used for connection of digital audio/video sources to digital displays and other home theater devices. HDMI connections can transfer digital video and audio signals from external devices, such as DVD players, cable boxes, and computers, to displays, such as an HDTV, over a single cable. HDMI supports up to 1080p resolution at 60Hz and is also capable of transmitting 7.1 channel surround sound.

HDMI carries both video and audio data, eliminating the need for separate video and audio connections to the display device. The HDMI standard also supports scaling of resolutions, allowing a signal up to 4K resolution (3840 x 2160). HDMI connectors also support HDCP, allowing secure transmission of protected digital content. There are several variants of the HDMI connector, ranging from HDMI 1.4 to HDMI 2.0.

Conclusion

USB, DVI, and HDMI connectors are essential pieces of technology for connecting various digital audio/video devices. They are used to transfer data between digital media devices, and enable users to access audio/visual content. Both USB and DVI are traditional connectors, while HDMI is a more modern variant of the two. All three use the same data transferring protocol and support similar resolutions and HDCP, but differ in their number of pins, cable length, and shape.

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