HDMI (High-Definition Multimedia Interface), also known as High-Definition Multimedia Interface, is the first digital interface that supports the transmission of all-digital, high-definition, multi-channel audio and intelligent formatting and control command data over a single cable without compression.
HDMI using TMDS (TimeMinimized Differential Signal) minimised transmission differential signal transmission technology, TMDS is a differential signaling mechanism, using the differential transmission method, is a use of the voltage difference between the two pins to transmit the signal technology. Each standard HDMI connection, contains three TMDS transmission channels for the transmission of data, and an independent TMDS clock channel to ensure that the transmission of the required uniform timing. Each TMDS channel is capable of transmitting a 10-bit data stream in one clock cycle. And this 10bit data, can be composed of a number of different encoding formats.
HDMI control board in the capacitive touch screen applications are mainly reflected in the following aspects:
1. To achieve high-definition video and audio signal transmission
HDMI (High-Definition Multimedia Interface) is a high-definition multimedia interface, which supports the transmission of uncompressed all-digital high-definition, multi-channel audio and video signals on a single cable. In capacitive touch display, HDMI control board is responsible for transmitting high-definition video and audio signals from computers, game consoles, players and other devices to the display to achieve high-quality image and sound display.
2. Enhance signal stability and anti-interference ability
HDMI control board adopts advanced signal processing technology, which can enhance the stability of the signal and anti-interference ability. In complex electromagnetic environments, such as industrial automation production lines, medical equipment and other fields, HDMI control boards can ensure that the capacitive touch display receives stable and clear video and audio signals, to avoid image blurring, sound distortion and other problems caused by signal interference.
3. Support synchronous transmission and processing of touch signals
In capacitive touch display, touch signal is an important bridge between the user and the equipment interaction, HDMI control board is not only responsible for the transmission of video and audio signals, but also supports the synchronous transmission and processing of touch signals. When the user touches the capacitive touch display, the touch signal will be converted into an electrical signal and transmitted to the computer or other processing devices through the HDMI control board. These devices will be based on the received touch signal for the corresponding operation or feedback, so as to achieve the interaction between the user and the device.
4. Enhance device compatibility and scalability
HDMI control panel has a wide range of device compatibility and scalability. It supports a variety of resolutions and formats of video and audio signal input, to meet the needs of different devices. At the same time, the HDMI control board can also be converted and connected with other interfaces (such as USB, VGA, etc.) to further expand the functions and applications of the device. In capacitive touch display, this compatibility and expandability provides users with more choices and convenience.
5. Optimise user experience
Through the application of HDMI control board in capacitive touch display, users can enjoy a smoother, high-definition, stable visual and auditory experience. At the same time, the accuracy and sensitivity of the touch operation has also been improved, enabling users to interact with the device more easily and conveniently. This optimisation not only enhances user satisfaction and loyalty, but also brings more business opportunities and market share to the manufacturers and sellers of the devices.
HDMI control board plays a crucial role in capacitive touch display. It enables the transmission of high-definition video and audio signals, enhances signal stability and anti-interference capability, supports the simultaneous transmission and processing of touch signals, improves device compatibility and scalability, and optimises user experience.
