Antenk DVI Series Digital Video Interface connectors are the standard digital interface for flat panels, video graphics cards, monitors and HDTV units. This series includes DVI-D (Digital), DVI-A (Analog) and DVI-I (Integrated Digital/Audio). Their unique crossing ground blades provide high speed performance at low cost. They are available in Straight or Right Angle PCB mount receptacles and mating male cable connectors. They support a data transfer rate of 4.95Gbps with a dielectric withstanding voltage of 500VAC. Each version features our specially designed contacts which improve signal performance and a zinc alloy shield that reduces electromagnetic interference (EMI).
Digital Visual Interface Cable Connectors
DVI ConnectorWith the advent of technologies such as DVD players, high-definition televisions, and even digital cable, the need for more advanced cables and connectors has increased. Digital Visual Interface (DVI) is one response to the growing need for interconnected systems, enabling digital systems to be connected to an array of displays. Yet DVI cables and connectors can also be complicated, and may lead to confusion between High Definition Multimedia Interface (HDMI) and DVI. Although the two systems have much in common, they service different niches of digital technology.
Digital Visual Interface
Older systems aren`t necessarily outdated systems. Although DVI preceded HDMI, it`s still widely used in both business and domestic settings. DVI connectors are designed to handle digital data transmission, incorporating three transmission channels in every connector link. The maximum bandwidth for data transfer is 165 megahertz, which is enough to relay up to 165 million pixels per second. Data is encoded for effective transfer, but a single link can handle around 4.95 gigabits per second of information. Double links can handle twice that amount.
Because a DVI cable carries information over a 165 megahertz bandwidth, complete digital resolution can be obtained. Using double link connectors increases the speed of transmission, but requires another cable. However, not many devices depend solely on a double link DVI, so this technolgy can be used on an as-desired basis.
Types of DVI Connectors
There are three general categories of DVI cable connectors: DVI-Digital (DVI-D), DVI-Integrated (DVI-I), and DVI-Analog (DVI-A). However, most connectors fall into one of the first two groups.
A standard DVI connector is 37 mm wide and has 24 pins, 12 of which are used for a single link connection. When analog is involved, four additional pins are needed to support the additional lines of an analog signal. It is not possible to cross from a digital source to an analog display or vice versa. In those instances, an integrated connector is probably the best option. There are five common types of DVI connectors.
DVI-I Single Link
This kind of connector has three rows, each with six pins. There are two contacts. Because the connector is integrated, it can be used with both analog and digital applications.
DVI-I Dual Link
A DVI-I dual link connector can also be used with both digital and analog applications, but is configured with more pins to accommodate a dual connection. There are three rows with eight pins each, as well as two contacts.
DVI-D Single Link
Specifically designed for digital applications, a DVI-D single link connector has three rows of six pins, and looks much like a DVI-I single link connector. However, a DVI-D connector has no contacts.
DVI-D Dual Link
Also made specifically for digital applications, a DVI-D dual link features more pins (three rows of eight) for dual connections. Like a DVI-D single link, a DVI-D dual link connector has no contacts.
DVI-A
This particular type of connector can only be used for analog applications, and has three rows of pins. One row has five pins, one has four pins, and the last row has three pins. Like single link connectors, a DVI-A link connector has two contacts.
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As health becomes more and more important, people's attention to the market is increasing. Therefore, engineers are racking their brains to create various devices to obtain people's health data and do a good job of disease prevention in advance to maintain good health. Today, there are many wearable devices on the market that can monitor human health data, such as smart wristbands, smart watches, and smart running shoes. What's more, devices that collect data are implanted into the human body.
However, there is no need to worry about equipment now. Researchers from MIT's MIT hope to monitor people's heart rate and respiratory rate through the surrounding Wi-Fi, and do not need any wearable hardware during the entire monitoring process. At present, the team's idea of ​​Wi-Fi monitoring and sign data has not yet been implemented in large areas, but it is at the stage of theoretical research. Their paper will also be announced this week at the annual human-computer interaction CHI conference held in Seoul, South Korea. 
The complete system for Wi-Fi monitoring of vital signs is called Vital-Radio. It works like a radar device. The router sends a Wi-Fi signal and will immediately bounce once it encounters people or objects in the vicinity. The system uses a special algorithm to calculate the reflection speed of each signal to distinguish between the presence and absence of objects and to record the human heart rate and respiratory rate. The system is detailed to track chest leveling and carotid artery pulse.
This is amazing, but this system also has its drawbacks. When the researchers compared the system with other devices that measure heart rate and respiratory frequency, it was found that it could not accurately monitor the data of the moving body. Therefore, this system can only be useful to those who have little movement, and it is meaningful for these scenarios at home or in hospital.
Of course, the data collected by this magical system cannot be used as a professional level. In this regard, the researchers hope that the system can be used to monitor the heart rate and respiratory frequency in infant sleep, or to monitor the pulsation of quiet patients in the hospital, or as a way of monitoring the user's mood at home in order to adjust the home The circumstances of the environment, such as monitoring users angry, automatically open windows or lights through the network and the like.
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