By PURPLELEC | 02 March 2024 | 0 Comments
Advantages of high-definition HDMI video capture card interface
With the development of broadband networks, high-definition and even ultra-high-definition video signals are gradually favored by consumers. This kind of high-definition and ultra-high-definition video signal transmission requires a corresponding video interface-------HDMI.
High-resolution video signals all rely on HDMI interface transmission, so what are the advantages of HDMI video interface?
1. High transmission bandwidth
The HDMI interface can provide data transmission bandwidth of up to 5Gbps and can transmit uncompressed audio signals and high-resolution video signals.
2. High resolution
HDMI is a high-definition digital interface that provides a good video signal since all analog connections (such as component video or S-video) require no loss when converting from analog to digital. This difference lies in high resolution, such as 1080p, which is particularly obvious. Digital video will be sharper than component video, eliminating the softness and smearing found in component video, with tiny, high-contrast details like text taking this difference to the extreme. Nowadays, 2K and 4K TVs are very common. Everyone can watch clearer and more detailed pictures through network devices.
3. Audio and video signal synchronization
Fully digital image and sound transmission interface, which can transmit uncompressed audio and video signals. HDMI supports standard, enhanced or high-definition video and multi-channel digital audio on a single cable. It transmits all ATSC HDTV standards and supports 8 channels, 192kHz, uncompressed digital audio and existing compressed formats (such as Dolby Digital and DTS). HDMI1.3 also adds support for the new lossless digital audio formats Dolby TrueHD and DTS-HD MasterAudio ? support, spare bandwidth for future enhancements and needs.
The HDMI interface is an interface that supports industrial, uncompressed, all-digital video and audio. As a new international standard multimedia digital interface, HDMI provides an interface between video/audio sources, such as set-top boxes, DVD players; or interfaces with A/V receivers or monitors, such as digital TVs.
4. Extensibility and ease of use
HDMI and DVI can be converted directly to each other through an adapter, and both are digital signals. There is no signal loss caused by conversion, so HDMI and DVI display devices, including video source devices, are interchangeable.
5. Confidentiality
In order to ensure that high-definition signals transmitted by HDMI or DVI will not be illegally recorded, high-bandwidth digital content protection technology, namely HDCP technology, has emerged. HDCP technical specifications are led by Intel. When users make illegal copies, this technology will interfere and reduce the quality of the copied images, thereby protecting the content.
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