DTV and ATV are different broadcasting standards that give users access to free TV channels. The difference between DTV and ATV is very significant: a fundamentally different way of transmitting the signal, different requirements for equipment, different quality of the signal at the reception. ATV is considered outdated, so analog broadcasting finally lost its relevance back in 2000, but there are regions where residents still enjoy analog broadcasting in Russia. DTV is a family of digital broadcasting that combines several standards. By using numbers, users can watch free air channels and achieve high-quality sound and pictures.
- 1 What is ATV: how it works, benefits and disadvantages
- 2 DTV – what are these, and what kinds of species are there?
- 3 Difference in digital television standards
- 4 Broadcasting in Russia in digital format
- 5 Technology development under new standards
- 6 ATV standards in today’s world
What is ATV: how it works, benefits and disadvantages
Analog broadcasting is broadcast through radio waves from a single source, with the maximum resolution of such a signal never exceeding 720×480. The main advantage of this standard in its range – the analog signal can be broadcast for thousands of kilometers. However, not without loss of quality. Many television companies began to equip powerful towers to receive the signal and then distribute it among consumers with cable, and the concept of “cable analog TV” appeared.
Despite the advantage in the radius of transmission and the availability of its reception in remote regions, many countries have already abandoned analog broadcasting and switched to the number – digital broadcasting. ATV has many drawbacks that affect the quality of signal transmission and can not meet the needs of the modern user:
- Analog TV does not support HD and Full HD formats.
- There is no possibility of multichannel audio transmission.
- There is no 3D image transfer.
- Dependence on weather conditions.
At one time, analog television did a great job. After all, if you remember the TVs, which were popular 20 years ago, everything falls into place. These were massive boxes with small screen sizes, so extensions in 720 x480 were enough, and about the home 3D cinema, then no one thought. But progress does not stand still, and today almost all of us at home is a modern flat TV with a good diagonal, on which video with the extension of 720 x480 will look at least strange. Also, many of us like to loudly turn on the music on the TV or watch the TV show in HD quality, which analog signals can not provide. Therefore, progress began to appear in new standards of broadcasting, which were later merged into one family – DTV.
ATV channels were always free, and they could be set up in a few minutes. Today, analog broadcasting remains popular in many regions of Russia, despite all its shortcomings. All modern TVs are still equipped and connector under the ATV successor.
DTV – what are these, and what kinds of species are there?
DTV TV is an acronym for digital television, which has come to replace analog broadcasting. The “digit” first became popular in the early 1990s but was widely used only in the early 2000s. The signal is transmitted digitally to transmit much more data, and the distance does not affect the quality of the resulting picture. Also, DTV standards have other advantages:
- The ability to transmit high-resolution video.
- External weather factors are not amenable to external weather factors.
- The ability to transmit multi-channel stereos.
- Extended information transmission.
- The ability to transmit a 3D image.
But digital broadcasting is not without its drawbacks. Unlike ATV, where the antenna was enough to receive the signal, the “digit” needs to be deciphered, so it will require a decoder, which in turn costs money. Modern TVs are often already equipped with a built-in decoder, but their cost is significantly higher than conventional devices designed for analog TV.
The difference in digital television standards
DTV is often called DVB TV, and in general, it’s pretty much the same thing. DTV is a common designation of digital broadcasting, and DVB is a broadcasting model that has been adopted in Europe, Australia, and Russia. Several different standards of digital broadcasting can be identified by the way the signal is transmitted:
- Satellite digital broadcasting – DVB-S (DVB-S2). In this case, the reception is made directly from the satellite through the antenna plate. To decode the signal will require a special receiver – decoder. It is already built into the TV in modern devices, and the user can only activate it using the SAM module. The SAM module is a device for decoding digital channels, which is provided commercially by many broadcasting operators. This method is great for the most remote regions. DVB-S2 is most commonly used in Taiga and the Primorsky region. The advantage of the satellite is that it often allows going online and accessing online functionality.
- Digital cable broadcasting – DVB-C (DVB-C2). The company, which provides broadcasting services in the region, rents and places a successor tower through which it receives a digital signal. Then the signal is transmitted through the fiber optic cable to the consumer, where it is deciphered either through a decoder built into the TV or through a separate receiver. Federal channels are provided on a free basis, for the rest – will have to pay.
- Broadcasting DVB-T (DVB-T2). One of the most popular and, at the same time, simple standards of signal reception. The signal itself is transmitted through the relay towers. The user can only accept it and decode it. It is noteworthy that even antennas, which were previously used to receive an analog signal, cope with the reception of such a signal. Modern TVs are equipped with DVB-T2 coders to view more outdated models to buy additional equipment – a remote receiver. Its cost starts from 600 rubles, so this method remains one of the most affordable.
DVB-T2 is also the most popular standard, as it broadcasts federal channels. The state actively supports the development of television broadcasting, so more than 50% of the country is equipped with towers to transmit the signal.
Broadcasting in Russia in digital format
Most federal channels switched to digital broadcasting back in 2009, when the “Federal Digital Access Program” was adopted. At the same time, the channels continued to support analog broadcasting due to its high popularity. Signal transmission in the AVT standard was carried out until 2019, and some channels still provide an analog alternative to consumers.
In Russia, federal broadcasting is available in the form of several packages of TV channels: “Multiplex-1 (10 channels)” – all over the country, “Multiplex – 2 (10 channels)” – all over the country, “Multiplex 3-1 (10 channels)” – Moscow, “Multiplex 3-2 (8-10 channels) – Moscow region, “Multiplex 3-3 (7-10 channels)” – Crimean Peninsula.
Technology development under new standards
TV manufacturers are also trying to keep up with the times. Modern devices already have built-in decoders, receivers for SAM, access to digital antennas. In most cases, the ability to receive an analog signal remains. The difficulty for the consumer lies in the fact that different regions use different digital standards. For example, American technology is not sharpened to receive a signal in the format of DTV, which can significantly complicate the setting or even make it impossible.
ATV standards in today’s world
Despite the rapid development of digital television, analog standards remain no less popular. This is largely due to the difficulty of accessing the digit in remote regions and the high cost of equipment, and the complexity of all settings. But sooner or later, analog broadcasting will completely lose relevance, giving way to improved standards of “digits.”