Buzz
With the rapid advancement of technology, as devices become more sophisticated, connectivity standards also need to evolve to keep up with technological trends. In the past, we used CRT monitors with cables like Composite or, more advanced, VGA. However, nowadays, with newer LCD monitors, to meet the demand for high-quality image transmission, we need new connection standards like HDMI or DVI .
Cables like Composite or VGA are suitable for CRT monitors as they only transmit analog signals for average image quality. However, with complex digital signals and new monitor technologies today, HDMI or DVI will better meet this transmission requirement. Naturally, the cost for this connection will be higher than older standards.
HDMI Connection
HDMI - High-Definition Multimedia Interface - A high-quality multimedia communication standard. HDMI is the default connection standard on modern devices such as LCD monitors, Smart TVs, Blu-ray players, modern graphics cards... HDMI is responsible for transmitting high-quality images and sound with 8 separate audio channels. HDMI does not use connecting pins; it plugs directly into the HDMI interface port for use. Therefore, the durability of HDMI will be better than other connection standards.
Connecting a laptop to a TV via HDMI is the top choice for users nowadays if they want to enlarge a movie or video from the laptop to the TV. With an HDMI cable, you will connect the laptop to the TV at extremely fast connection speeds with equivalent quality images.
DVI Connection
DVI - Digital Video Interface - A standard for transmitting digital image data. DVI is used to transmit advanced high-quality image data beyond VGA. DVI has a similar form to VGA with data transmission through connecting pins. The number of connecting pins will determine the maximum image quality that can be transmitted. For example, with fewer pins, only lower than HD quality images can be transmitted, while with Dual DVI technology, images of up to 2K quality can be transmitted (twice the resolution of full HD)
Converting Between Communication Ports
When display devices switch, it means there will be many different connection standards. To transmit signals between devices with different connection standards, a converter device is required.
These converter devices will have their own standards to suit the conversion purpose, such as from VGA to DVI or from DVI to HDMI. Due to the unique characteristics of each connection standard, the converted signal may not be the same as the original. For example, converting signals from DVI to HDMI will not transmit audio and vice versa.
Effective Use of HDMI and DVI
Some advice for users of these two connection standards:
There is no need to buy overly expensive connection cables. With current technology, connection cables only differ from each other in external appearance and durability. Furthermore, there is not much difference in signal transmission and image quality between expensive cables and regular cables.
It is advisable to use the HDMI standard as the general standard when deciding to purchase new devices for various reasons such as durability, compatibility, transmission capability, etc.
Here are some concepts about HDMI and DVI as video signal transmission standards. With current technology, we also know about wireless image transmission technology, exemplified by the ability to connect a laptop to an Android TV using Google Cast while maintaining image quality, provided that the smart TV runs on Android.
When connecting a Laptop to a TV, users have various display options through the laptop. If you are using Windows 10, this mode is called Dual Monitor. When setting up Dual Monitor, you have four choices to display images and videos from your laptop to your TV. Additionally, Dual Monitor setup offers more support. For detailed instructions on how to set up Dual Monitor, click here.
