What is an EDP cable ?

EDP, full name Embedded DisplayPort, that is, embedded display port, is a high-performance, high-bandwidth digital interface used to connect electronic devices and screens. Developed and promoted by the Video Electronics Standards Association (VESA), it is mainly used in mobile devices such as laptops and tablets, as well as certain displays to achieve the transmission of high-definition video, images and sound. The following is a detailed description of the EDP cable:

First, the basic concept of EDP cable

EDP cable is a flat welding line with a screen interface of 0.3~0.5 small pitch, which is developed based on the DisplayPort framework and protocol. DisplayPort is a fully digital interface standard published by VESA in 2006 to replace traditional display interfaces such as DVI and HDMI. As an embedded version of DisplayPort, EDP inherits its advantages of high-speed transmission, high resolution, and low power consumption, and is optimized for mobile devices.

Second, the type and structure of EDP cable

EDP cables are mainly divided into single channel and double channel two types, the common EDP cables are 2 groups of signal lines (twisted wire) or 3 groups of signal lines. Through differential signal transmission technology, these signal lines can reduce noise and interference and improve the reliability of signal transmission. The structure of EDP wire usually includes conductor, insulation layer, shielding layer and outer skin, among which the conductor is made of high purity oxygen-free copper material, which has the characteristics of low impedance and strong oxidation resistance.

Third, the technical characteristics of EDP cable

1. High-speed transmission: EDP interface a total of 1~4 pairs of lane for data transmission, embedded clock. In RBR, HBR and HBR2 modes, the single lane speed is 1.62Gbps, 2.7Gbps and 5.4Gbps, respectively. The high bandwidth transmission capability enables EDP to support the transmission of high-definition video, images and sound, meeting the needs of modern electronic display devices for resolution, color and frame rate.

2. High resolution: EDP interface can transmit high resolution video signal, support up to 8K (7680x4320) @60Hz resolution. This makes EDP widely used in areas such as high-end displays, tablets and laptops.

3. Low power consumption: The EDP interface uses simple connectors and fewer pins to transmit high-resolution signals, reducing power consumption. At the same time, EDP also supports dynamic power management functions, which can adjust power consumption according to the actual demand of the display content, further reducing energy consumption.

4. Strong compatibility: the EDP protocol is fully compatible with the DP protocol, which means that the EDP device can be compatible with the DP device. In addition, EDP also supports multi-channel transmission and a variety of signal formats, and can be converted and connected with other interface standards (such as HDMI, DVI, etc.).

5. High signal quality: EDP interface has higher requirements for signal quality, using differential signal transmission technology and advanced signal processing technology, which can reduce signal loss and distortion and improve the quality of images and audio.

Fourth, the application scenario of EDP cable

EDP cables are mainly used in mobile devices and small-size displays, such as tablets and smartphones. With the development of technology and changes in market demand, EDP cables are also gradually expanding to other fields, such as monitoring equipment, medical equipment and car navigation systems. These applications require high display quality and data transmission speed, and EDP cables are the ideal choice due to their high performance and wide compatibility.

Fifth. Comparison between EDP cable and LVDS cable

LVDS (Low Voltage Differential Signaling) is an interface that uses differential signaling technology for high-speed data transmission, usually used to connect liquid crystal displays (LCDS) and display controllers. Compared with EDP cables, LVDS cables have the following characteristics:

1. Low transmission rate: LVDS interface transmission rate is relatively low, can not support high resolution and high frame rate video transmission like EDP.

2. High power consumption LVDS interface adopts single-ended signal transmission mode, which has relatively high power consumption. The EDP interface uses differential signal transmission technology, which has lower power consumption.

3. Poor compatibility: LVDS interface and EDP interface have large differences in electrical characteristics and signal format, so the compatibility between the two is poor.

However, LVDS cables still have advantages in some specific application scenarios, such as industrial monitoring systems with high requirements for stability and reliability, LVDS cables have been widely used with its low power consumption and strong anti-interference ability.

Sixth. Test and verification of EDP cable

In order to ensure the reliability of the EDP interface, a series of tests and validation are required. This includes physical layer electrical characteristics testing, link management testing, display testing, and so on. Companies such as Tektronix provide relevant test solutions and tools to ensure that the performance of the EDP interface meets expectations. These tests and validations are essential to ensure the quality and stability of the EDP cable.

Seventh. Future development of EDP cable

With the continuous progress of technology and the continuous development of the market, EDP cables will be applied in more fields. In the future, we can expect EDP cable to make breakthroughs in the following aspects:

1. Higher transmission rate and resolution: With the continuous progress of display technology, users' demand for high-definition video and images will be higher and higher. EDP cables need to continuously improve the transmission rate and resolution to meet the market demand.

2. Stronger compatibility and flexibility: EDP cables need to be better compatible and converted with other interface standards to adapt to the needs of different devices and application scenarios. At the same time, EDP cables also need to be more flexible to adapt to new display technologies and devices that may emerge in the future.

3. Lower power consumption and cost: With the increasingly prominent energy and environmental protection issues, users will have higher and higher requirements for power consumption and cost of equipment. EDP cables require continuous optimization of design and production processes to reduce power consumption and costs and improve market competitiveness.

In summary, as a high performance, high bandwidth embedded display interface line, Cnomax EDP cable has a wide range of application prospects and development potential. In the future, we can expect EDP cables to play an even more important role in the field of display technology.