In this article, consider everything you need to know about TVs, how to choose them to choose them for home. Attention should be paid to the characteristic and diagram, modern flat screen models and other species. No less important is what video and audio formats support televisions, and which models offer current manufacturers.
History of origin
Exactly and unambiguously say who specifically and when I invented the TV, it is impossible. After all, it was a very complicated invention that required the work of many physicists, engineers and enthusiasts for decades. In each industrialized state there is a version of the history of television. But it is undoubtedly one thing: the first TV books, which in the maximum general form look as well as modern, appeared in the 1930s. The most important role in their creation was played by the improvement of vacuum equipment and radio equipment.
A black and white TV with a mechanical scanning of the image in our country was presented on October 1, 1931, the trial transmission was held on the same day. At the same time, a photoeffect, underlying a kinescope, at that time was already known for over 40 years, and self-made CRT in laboratories appeared in the 1900s.
The mechanical mode of the TV was generally represented by Paul Nipkov in immensely distant already 1884. On the basis of the Nipkov disk, many receivers were created until the end of the 1920s. However, a high-quality leap was made only due to the tube guiding electronic rays. On the basis of CRT TVs worked many decades. Color broadcasting and video recorders appeared, remote controls, even game consoles, and the kinescope did not give up his position for a long time. In the 1980s, the first television receivers on liquid crystals are created, but they have become any mass in the 1990s.
The last 30 years were marked by such innovations as the transition to digital technology, the appearance of teletext and multimedia capabilities, internet connection, the distribution of plasma screens. Undoubtedly, television development will continue.
Regardless of the schema of the device of a particular TV and its element base, the brightness of the screen plays a huge role. It doesn’t matter whether the film or video game is displayed there, theatrical presentation or direct inclusion of news, the tuning table is even – only a bright picture will fulfill its tasks. But the intensity of the glow should be adjusted over a wide range so that it can be adjusted for specific conditions of illumination. The optimal option is from 250 to 500 kD per 1 m2.
The viewing angles in fact do not have. In all modern models, the difference between them is very small. Still worth paying attention to:
- general permission;
- Number of non-working pixels;
- capabilities for connecting external devices;
- the time for which the screen is responded;
- working diagonal (defining not only the size of the picture, but also the convenience of use in a particular room);
- image contrast;
- Formats of reproducible files.
Review of species
All TVs are divided into species depending on certain parameters.
Using the image technology
Older TV – on a kinescopic basis. They are already finally ousted by liquid crystal and more modern models. However, in some way in houses such devices still remain. They serve long enough, give a wide review, high-qualityly display color and black and white pictures. At the same time, the kinescope weighs quite a lot and occupies a fair place, does not allow to embody many functions and receive a digital signal.
Sometimes there are also projection televisions. It was they who for the first time in the industry could have screens up to 80 inches. Behind the display they have three multicolored lamps. For folding the picture answers a sophisticated system from lenses and mirrors. Projection technology reduces current costs, but it causes strong heating when working, dries the design.
Such TVs do not work for more than 10 years and provide limited viewing angles.
The next step of development was plasma TV. This group has already appeared flat and thin, even acceptable for wall plants, models. The main principle is a controlled glow of small voids filled with inert gases. The color rendition from the “plasma” is very good, and the image artifacts are a bit, the brightness of the picture pleases, as well as the ability to operate up to 30 years. However, this screen suffers greatly from shocks and pressure, it does not allow to give permissions more than HD, and its repair road.
Liquid crystal screens implies highlighting fluorescent lamps, or, in a more modern version, LEDs. Basic properties:
- zero flicker;
- no resolution restrictions;
- good color transfer;
- long service matrices;
- ease and variety of diagonals;
- relatively poor black output;
- Image quality dependence on frame replacement frequency.
On the type of screen backlight
Direct LED backlight, and in LG terminology since 2018 – Fald – implies a uniform distribution of LEDs on the rear plane of the screen. Losses of light at the edges with such technology are reduced. Local blackouts are shown more clearly compared to the background. But the dark plot is impossible to position exactly, and in addition, a strong halo effect appears.
Advanced FALD version is not used in budget models. LEDs are clearly broken down by darkening zones. The more such zones and diodes themselves, the higher the performance. At the edges there will definitely not be an illumination. However, energy consumption is growing, and the matrix has to thicken, alternatives – EDGE LED and OLED (the most modern technology).
By character of sound
Traditionally, televisions equipped with monophonic speakers. But In modern conditions, when using large screens of high definition, stereo sounds turns out to be most justified. Especially high his demand in high definition television with a quick change of frames. The most advanced models have a surround sound. It is performed both by analog and digital diagram.
Important and what kind of video format is supported by a specific TV receiver. For VCD reproduction, you need a MPEG1 standard. Using MPEG-2, you can play DVDs and process recordings in digital format. MPEG-4 is considered the most advanced option. There is also H. 264, XVID, DivX, HEVC and a number of other formats.
Virtually any modern TV can be connected via wireless communication to the Internet and gadgets, as well as used as a game console.
Among them are purely decorative additions, first of all, frames on the wall (in the form of paintings, black panels, boxes and so on). Behind such frames it is convenient to mask discover wires. To connect to the ethereal antenna (both room and generalical) you need to use a plug. Of the additional accessories deserve attention:
- 3D glasses;
- external hard drives;
- brackets under wall fixation;
- adapters for connecting Wi-Fi;
- media players;
Modern manufacturers regularly replenish the model range of TVs with new products, and with these versions it is useful to get acquainted closer. And start an overview appropriately from the product German company Telefunken – TF-LED24S75T2. The picture of the form 16 to 9 is formed on the 60-centimeter screen. This model is equipped with all the necessary infrastructure for a wide variety of connections. Picture resolution reaches 1366×768 points, which is quite enough in most apartments and private houses.
Additionally, it is worth noting:
- Nicam level stereo
- Getting up to 100 analog and up to 500 digital channels;
- progressive scan;
- USB support (including to play recorded files);
- Response of the display maximum for 10 ms.
Lovers of expensive equipment from well-proven manufacturers appropriate to pay attention to suggestions from Sony. A genuine breakthrough novelty is ZH8 supporting the 8K Line Picture. The model supports an extended dynamic range. Large screen provides a full immersion effect. This is also achieved at the expense of the well-thought-out speaker system of the last generation.
- catchy appearance;
- Refusal to the expensive Master Drive Frame;
- Exceptional quality color reproduction.
Korean competitors, however, also try not to give up. The newest product from Samsung – The Serif with 55 inches screen diagonal. Developers claim that this TV not only has excellent specifications, but also converts the surrounding space. The description marks the option of intelligent synchronization. It should also be noted:
- 4k quantum processor;
- Advanced dynamic generation range 10+;
- number of points 3840×2160;
- Motion Rate 200;
- fully adjustable HLG;
- Corporate Contrast Extension Technology.
Among Phillips adherents is becoming increasingly popular with 50pus6262 / 60. This is a particularly thin LED-based television. Standardly supported 2-third-sided backlight of the Ambilight standard. Fully supported DVB T / C / T2 / T2-HD / S / S2 formats. The original open stand gives the product a feeling of weightlessness.
- Screen brightness – 350 Kandela;
- a brightness ratio of up to 65%;
- SIMPLYSHARE technology;
- option “TV on request”;
- full access to YouTube;
- the ability to update the software environment and USB, and via the Internet;
- Radant sound sound up to 20 W.
But the products of the manufacturers of the second echelon may be no worse! For example, Sharp offers the 8m-B80AX1E model, Confidently supporting picture 4K and even 8k. The brightness of the image is from 800 kD per 1 m2. In the most powerful mode, it rises to 4000 kD per 1 m2. Dynamic range Supports Additional HLG / PQ Technological Option.
It is also worth noting:
- Advanced color reproduction technology Wide Color Technology;
- 2 dynamics of 20 W;
- monitoring through LAN;
- Minijack connector.
Such a manufacturer like “Horizon”, also continues to delight consumers with new products. A bright example – 32le7162d. This device fully complies with the criteria for the SMART TV. The receiving unit works according to DVB-T, DVB-T2, DVB-C. Contrast level reaches 1200 K 1.
Display response occurs for 8 ms. The value of the visible area of the monitor is 120.9×68 cm. Ethernet and Wi-Fi are supported. Plays 3GP, FLV, VOB, AVI, TS type files. Alas, YPBPR and SCART are missing, but there is an Earphone and coaxial output.
If you need a very small TV with modern standards, you should pay attention to the 16-inch version H16B3000C from Dexp. EDGE LED screen manifests itself very well. HDTV is supported, but due to limited diagonal limited to the level of 720p. The brightness of 200 cd and contrast 1200 to 1 cannot be called record, but the TV is still performing its task. Wi-Fi is absent, and the sound power is 6 W. General characteristics say this model for the most undemanding buyers.
The Turkish manufacturer Vestel deserves attention. Very good position occupies, in particular, modification 40FD7000T. It is capable of handing out the picture 4K and supports the full SMART TV mode. The dual-core processor provides the issuance on the D-LED panel of the undoubtedly high-quality image.
Even playing ASF, MOV, DAT, MKV, FLP files.
If the 40-inch screen seems redundant, you can stop the choice on Models 24HD5100T. It is fully compatible with HDTV broadcasting standard. The single-core processor forms a solo picture of 1366×768 points. All the same file formats are supported as in the previous sample, as well as automotive channels, 2 HDMI inputs, coaxial sound output, USB recorder. Experts also celebrate the EPG option.
From conditionally domestic models you can pay attention to POLARLINE 20PL12TC. The TV supports the sound of the Dolby AC3 level, as well as Nicam Stereo. USB PVR, TIMESHIFT protocols apply to record digital signals. The device supports the resolution of the picture to 1080p and widescreen broadcasts (at least 20 to 9). Possible reception of signals at frequencies approximately from 48 to 863 MHz.
Part of people will be more satisfied with TV Grundig Fine Arts LED TV GR 46 GBI 7146. It updates a picture with a frequency of 100 Hz. Supported on USB media. The contrast of the image is 5000: 1. Motion Picture Improvement is used.
Fans of exotics will ask Loewe TV veliers to taste. The cheapest model is BILD 5.32 Graphite Grey. Manufacturer declares about excellent sound quality, image and design. Delivery is possible only to order. Audio code model is provided 5.1, remote control to control the entire home cinema together, headphones and keyboard Bluetooth, transfer of content using DR + protocol, recording with temporary shift.
TVs even produce Hyundai. Warmless 40-inch Model H-LED40ES5108 Supports Android TV technology and Bluetooth control, as well as voice. Both speakers give out the power of 8 W, supported by Dolby Digital, Nicam. There are two antenna entrances, port RJ-45. Provided the use of Android OS 9.0.
Finally, it is worth mentioning about Model TCL L49S6400. Its basic properties:
- HDTV, Smart TV, EPG;
- response point for 6.5 cm;
- variety of digital tuners;
- 2 HDMI ports;
- Mass of 9.8 kg.
How to choose correctly?
Pick up the parameters a good TV for home is not so difficult, as it seems. And even finding out the opinion of the specialists is not too important – all the same, modern TV books are successfully closed by the needs of 96% of users at least, and the remaining 4% know what they need. The general recommendations are extremely simple. To view the image in the kitchen, as well as for an ordinary employed person, you can purchase any inexpensive model.
But even lovers of video games are not really needed especially expensive samples. They are bought only when they want to show their high status. Electric power of the TV can safely neglect. But the resolution of the picture, its brightness and contrast is much more important.
Damage to the big diagonal of the screen does not follow – its width must correspond to the size of the room, and the required consultation will be willingly give in any store or on the manufacturer’s website.
Take into account the permission is necessary and in the fact how much content in it. When choosing TV to the bathroom, you should, first of all, pay attention to the resistance to moisture. In addition, the big size is not needed there. If the TV is selected in other rooms, you need to watch how it will be perceived in the interior. Useful HDR function. However, it is not needed to those who are going to confine the essential and cable broadcasting.
Additionally, it is necessary to deal with:
- types of matrices;
- SMART TV mode;
- additional interfaces;
- USB socket number;
- frequency of sweep (the higher the better).
How to use?
Before switching on the TV, you need to make sure that it is supplied exactly and on a stable pad that it is well grounded. Starts will also have sockets, and all wires. If there is already an antenna, but it does not fit the connection format, you just need to add an adapter. IMPORTANT: There are quite a lot of such adapters, and they must be carefully choosing. In the overwhelming majority of cases, users still use airtal television, and therefore it is important to properly assign frequencies of television channels.
Almost always the problem is solved automatically. But if the autopoisk immediately did not give good results, you need to make a manual adjustment. Accurate frequencies need to be recognized in advance. To access the Internet will have to connect the modem.
This connection is made either via USB, or “by air” (which is easier and does not require it to take place by cables).
Before running any application and generally active use of the TV need to make sure that it really needs. Processor overload strongly reduces its resource and accelerates breakage. In many cases, it is also useful to disable subtitles that can hardly annoy. On LG TVs, the problem is solved at the wrong menu item “Display of additional controls”. To note: if the disconnection is not possible, this is a sign or an obsolescence of the TV, or a viral attack.
When hanging TV you need to restart. This is usually done from the control panel, by turning on and subsequent inclusion from zero. If such a step does not help, you will have to turn off the device from the network and then connect it again. When and this does not give results, you will need help professionals. To transmit a signal from the phone, you can use the Wifi-inkeogong option, apply access via a common Wi-Fi network either by using Chromecast.
It is impractical to be closer than 3-4 diagonals from the screen. It’s simply uncomfortable and even harmful to sight. Wipe the surface only with a soft cloth. The device from moisturizing and contact with electromagnetic fields should be protected. All cables and plugs are inserted into the nests strictly allotted for them.
A few more recommendations:
- Avoid illumination with straight sunshine;
- put the TV as far as possible from the heating devices;
- Regularly check the strength of wall mounts;
- use network filters and stabilizers;
- do not change the settings, the meaning of which is incomprehensible.
If a horizontal strip appears on the TV, it can be related to:
- device overload (long continuous viewing);
- clogging the video signal transmission cable;
- problems with settings;
- output matrix failure;
- software failures.
Very often the message Warning LNB Short is displayed. This error does not allow you to customize the TV channels and, accordingly, view them. It decryls as a “short-circuit on the receiver” and provoked:
- closure in braid;
- illiterate the active antenna settings;
- damage to the tuner board;
- getting garbage inside cable.
Sometimes they discover that the screen has darkened, and there appeared the stain of various sizes. If the TV is bought recently, the probability of the factory marriage is great. In other cases, it is more correct to assume mechanical destruction. Also danger is penetrating inside the water or air screen. Finally, stains are often provoked by high temperature.
Sometimes there are still such failures like:
- burnout of the matrix;
- The appearance of broken pixels;
- failure of the power supply;
- Image distortion (due to the inverter breakdown).
About how to correctly choose a TV in 2020, see the following video.