Digital television is conquering the hearts of people around the world. In place of an analog signal familiar to us, comes digital widescreen. What is the difference between them? Origin continuously transmits data on the maximum value of the oscillation amplitude of the wave, thus creates a large spread, which is fraught with interference on the screen. The second signal is transmitted according to the rules of a discrete function, ie fluctuations only accept certain values. From this improved signal quality, there is no interference on the screen and the data is protected from unauthorized interception or exposure.
Digital television has made it possible to watch programs in the new format, the image quality is several times better than that of analog television. Some contemporary channels broadcast videos in HD-quality.
What is a digital tuner
The content of the article
- What is a digital tuner
- What TV show digital channels without a set-top box
- All if the TV supports digital TV
- How do you know whether there is a TV in the DVB-T2
- Why DVB-T2 outperforms consoles
For digital video on your TV, you need to put additional equipment:
- special antenna (could be a satellite dish), which will receive the digital signal or the cable (fiber, twisted pair);
- a receiver (tuner) which decodes the digital data and transmits them to the TV set (may be embedded in the TV set).
TV-tuner - a special receiver, designed to receive and decode the data signal in a variety of formats, with the information output to the screen. It can capture video and radiotsifrovye waves. Available as a standalone appliance or built-in TV or computer chip.
Receivers are classified by a number of parameters:
- Support of television signals standards;
- according to the method of connection to a PC or television;
- for interaction with the operating system.
The tuner receives digital stream multiple formats (data given to Russia):
- DVB-T, DVB-T2 working with broadcasting.
- DVB-C for cable television.
- DVB-S, DVB-S2 - for reception of a signal through a satellite antenna.
there are many models of digital set-top boxes on the market. they differ in cost and functionality, design. Yet the main task of the receiver - receive data in the DVB-T2 format, this objective is performed all the instruments.
Each receiver has a USB - port (of the cost depends on the number of connectors). It allows you to connect storage devices (removable hard drives, flash drives, mobile devices), and watch videos directly from them.
In the more expensive models, it is possible to record information with terrestrial TV on drives.
Also, there are tuners with the ability to work on the internet. The connection is made via the cable "twisted pair", or by radio Wi-Fi. This extends the ability to view channels that have the World Wide Web (eg, YouTube).
The latest models have a tuner function with the Android operating system. This allows you to broadcast Smart-TV (connection technology to the television network via mobile devices or PC).
To select a set-top box to view the program (there are 20 free channels of digital broadcasting in Russia), it is necessary to determine the receiver's functionality. What actions should perform the tuner, a signal will take the device? Do a set value affects the (set-top box and antenna) on the choice of subject matter?
It is important to remember what signal will be broadcast and processed by the instrument. In general television programs are received in MPEG-4 quality, but some large companies are moving to HD-format.
There is a built-in TV receivers. They have the same features as the theme, and that an external decoder.
What TV show digital channels without a set-top box
Which TV is needed for digital TV? The Russian digital TV appeared relatively recently, so citizens rarely think about the possibility of buying equipment with some additional features. You can purchase a display model with built-in receiver, not to buy additional equipment.
In the world market for the production of TVs have the clear leader, which produce models with built-in card - decoder. They work on their own, hence the additional equipment to view digital TV is not required.
The most popular companies with model after model year 2015 have built-in decoding chip:
- samsung;
- LG;
- sony;
- philips;
- Apple;
- panasonic;
- Toshiba.
There are other manufacturers, but the presence of additional features need to elaborate.
IMPORTANT: in addition to Apple's, which are combined only with the equipment of its brand, the other companies produce universal TVs. These marks may not work with devices of any other company (except Apple).
In what TV has a digital tuner? The developers are trying to make life easier for users annually. The more modern model, the more programs and opportunities it has.
What models of TV supports digital TV? The built-in tuner does not guarantee a view to broadcasting. When selecting the data necessary to specify transmission standards (for a simple antenna, satellite or cable TV).
All if the TV supports digital TV
What should be the TV for digital TV? It should be noted that not all TVs can receive digital signals, even the current models. Older screens equipped kinescope or CRT only accept analog signals. Without receiver digital signal they will not accept.
IMPORTANT: Before you buy an external equipment for older models, make sure that the connector meets the modern standards. In simple words, buying a set-top box, cable can not enter into the receiving openings on the TV. This is rare, because the slot is used as an ordinary antenna.
What TV support digital TV without a set-top box? Ability to work with digital video was developed in 1990, but the first models of TVs that support the figures appeared in 2004. They met very rare and pricey.
What TV can receive digital television without a set-top box? Plasma and LCD models have become mass-produced, complete with decoders 2010 at the latest. In Russia, these screens appear later in 2013.
Today, almost every screen supports the ability to produce digital data. The exceptions are the low-cost model with minimal features.
IMPORTANT: You must remember that there are a number of countries that have terrestrial digital TV broadcast in other bands than in Russia. For example, in America it is the ATSC, Japan and South America - ISDB-T, and in neighboring China - DTMB. In European countries, the broadcast channel extends in the DVB-T format (obsolete format, but there are companies that are broadcast on it) and DVB-T2. Russia uses - DVB-T2 frequency.
Buying a TV outside Russia, you need to choose a model with the DVB-T2 support.
How do you know whether there is a TV in the DVB-T2
What TV is receiving a digital signal without a set-top box? When you select the TV (or checking an existing TV tuner for the presence) need to look at the parameters in the instruction to the device. It is also possible to find a description of the model on the Internet. For example, the official resource producer. For this manipulation is necessary to find the make and model of the TV. On the model of the device is indicated on the back side of the screen.
IMPORTANT: To determine the accuracy of marking. If you choose a TV that supports DVB-T, which is on the DVB-T2 format will not work. Error in one figure may be an unpleasant discovery in the future.
There are differences in the decoder: if it will work from a satellite antenna (this is a wave with a characteristic - DVB-S or DVB-S2). For cable digital television, you must have a tuner, which decodes DVB-C information. Or the consumer will be satisfied with the usual broadcasting on DVB-T2 wave.
In specialty stores basic parameters indicated on the price list, as information is available from the consultant.
In the case where lost all markings and the instruction itself, then the receiver can check availability by scanning channels. To do this, you must have an antenna. Distinguish between digital broadcasting from analog easy: at first excellent quality, shows the channel name, as well as the previous and subsequent channels.
Why DVB-T2 outperforms consoles
What TV does not need a set-top box? Some, before buying a digital TV sets are asking: what is better - built-in tuner or an external set-top box. In the embedded chip has a number of advantages:
- The signal is processed faster. Visuals are not "sticky", the picture does not jump. Interference, which are formed in the cable between the prefix and TV, no.
- Fast channel tuning. To work you must go to the TV's setup, connect the antenna, and run a scan. With peripheral tuner, you must configure the connection to the TV.
- Use one remote control, instead of two. On the receiver channels are switched to their own remote control, which is not very user friendly. The sound from the TV remote control is regulated. There is a universal device, but this is an additional expense.
- The lack of clutter. External tuner uses an additional outlet.
- Outer decoder has to be located within the area of the panel. For example, if the screen is fixed on the wall, you need to set-top box is not far away (sometimes require additional shelf).
- If you buy a TV and an external receiver, then it will cost more than a screen with a built-in tuner.
Buy prefix advantageous when television itself already, but without the support of a digital decoder.
IMPORTANT: do not buy the chip in order to integrate it into the TV. Do it without special equipment and knowledge is impossible.
Of course, there are pros and external decoder. For example, it feeds the antenna yourself.
if possible I would like to get an overview of all the new products on the market
Good morning, Vladimir Batkovich! I have a TV company VVK LD1506SI 2007 model, the release, By all the laws should not accept a digital signal and by brand TV is not receiving DTB-T2 signal, but continues to operate after April 15th. I began to investigate the cause. The letter A next to the logo of the program - no, although the reception DTB-T2 signal is absent. Help me to understand. What's the matter?
Looking where you live, for example, in the Sverdlovsk region only after June 3 figure will
We have an old TV set produced in 2009, with a kinescope. Who does not show because of the shutdown of analog TV. We need to buy a console, in order to be able to watch the TV?
Hello, Elena! Depending on the model console. It is better to ask this question in the store, which sells TV set-top boxes
Welcome Vladislav! I just wanted to know, we need to buy a set-top box, or without the prefix, you can configure a TV?
Depends on your TV, it is better to consult a specialist in your city
Good afternoon! I'm at the cottage TV Panasonic TS21-L3R, it is clear that the digital signal can not take it. Will it work this TV with an attachment? The fact that there is a AV input, but without division of the audio on the left and right channels, ie, one video input and one audio input. Should I buy a digital set-top box?
Dear Anatoly! Refer the matter to a specialist or dealer consoles, where you will get more accurate information