Terrestrial, satellite or cable television. Digital cable television
Television has undergone significant changes and increased diversity over the past 30 years. If earlier we had to be content with black and white, later color, but still on-air reception and broadcast, then rapid progress in last years gives us all new names various technologies. Is it worth keeping up with it, keeping track of new products? It’s up to you to decide, but we will help you understand modern television and radio broadcasting, so let’s talk about TV, about TVs?
The biggest disadvantages of terrestrial TV are considered to be the properties of the television signal to be reflected from any objects and to attenuate (weaken) at a relatively short distance from the transmitting station (for example, the Ostankino TV tower). Not only distance, but also buildings and trees, transport and even heavy precipitation became insurmountable obstacles to the TV signal. Only the transition to a digital cable television model saved millions of viewers from annoying interference and distortion of sound and image. The structure of cable television broadcasting looks like this: In Earth's orbit, conveniently above the equator, there are television satellites. They spread television signal. It is received by powerful satellite dishes, which are usually placed on the roofs of city buildings. This signal is retransmitted via optical fiber and then delivered to end consumers via coaxial cable. To connect cable TV, just run the cable into your home and plug it into the TV connector. Telecommunication companies provide services for laying cables and selling television packages from various operators. Despite the development wireless technologies, cable TV still has big number advantages due to which it will be popular for many years to come.
Satellite TV is also becoming more accessible, but it is more individual and optimal in remote areas, which are the majority in our country.
The obvious advantages of satellite and cable television are reliability, signal quality and a huge selection of channels: news, business, music, children's and entertainment programs. What differentiates these last two ways of watching TV is the price or cost of connection and the cost of equipment. The cable connection is minimal. When setting up a satellite TV signal reception system, you need to purchase a dish (antenna), a bracket for mounting it, a converter, a receiver and other elements. To connect digital cable television, you just need to run a wire into the apartment. In one case, you save yourself from the costs of equipment and the problems with its installation and configuration. In another you get a fixed payment and a huge variety of TV channels. Sometimes we install several multidirectional satellite dishes and this is also a price for possible diversity.
Our company "Engineering Group" offers installation, installation, configuration and maintenance of equipment for receiving satellite, cable and terrestrial television channels. If any of the television systems are already functioning at the facility, we are ready to offer modernization and replacement of equipment, as well as the integration of home theater systems into existing television systems. As part of the implementation of our projects, we offer equipment from the world's largest manufacturers.
The Father of Television and More
July 17 (29), 1889 - July 29, 1982
Life modern man strongly associated with television. There was a time when we sat at home from morning to evening, with our noses buried in the “talking box.” Now, however, (in the age of universal computerization) some of the population’s priorities have changed a little: they moved from one screen to another.
However, even today many people prefer to watch entertainment shows and analytical programs, concerts and films, news and sport competitions on TV. And at the same time, it does not occur to any of us ordinary people that there once lived a man (by the way, a winner of the US National Science Medal) who was worried about how an image could be transmitted over a distance. Have you ever wondered about something like this? And Vladimir Zvorykin (that was the name of this man) filed a patent for electronic television, and subsequently developed a kinescope and an iconoscope (transmitting tube).
The successful testing of the iconoscope inspired the scientist to develop television system. It’s hard to imagine, but already in 1940, having broken the light beam into three primary colors (blue, green, red), Zvorykin received color television.
Other ingenious inventions of the scientist
But a scientist would not be a scientist if he did not have a desire for new discoveries. In his laboratory, plans were born to create devices with wonderful names: orticon, vidicon, etc. Among his developments was a system electronic control traffic movement. Who knows, perhaps, without the “intervention” of V. Zvorykin, they still would not have learned to computer predict the weather using radiosonde rockets.
The range of inventive thought was so wide that discoveries spread to the field of medicine. Blind people are grateful to the genius for inventing a reading device for them television device. The scanning electron microscope is also his work. It seemed that there was no limit to the limit of imagination embodied in reality: the endoradiosonde method was also based on his ideas.
The whole world to this day uses the brilliant inventions of V. Zvorykin, a scientist born in Russia (Murom), but forced to emigrate to America in the post-revolutionary years.
Are we collaborating?
We do not undertake to compete with a scientist who has eighty scientific papers and more than one hundred and twenty patents, but we are proud that our activities have a point of contact with his discoveries. V. Zvorykin developed a night vision device (yes, yes, that too), we design and install security and security systems for facilities, including a video surveillance system (can you see the similarities?).
Close cooperation with our clients at all stages (from design to installation and maintenance) earns their positive feedback.
Isn't it time to start our cooperation with you? You will not regret!
Why do they trust us?
Why do they trust us?
| Low prices . We really offer low prices and even more so with a complex order or with repeated requests, because you are working not with intermediaries! cost of the project when ordering installation work! Cost of equipment and Supplies much less than competitors due to experience and sales volumes. We consider the first year of maintenance (TO-1 and TO-2) to be a guarantee and it is free for our Customers! | |
| Project department . Our GUI department is the core of all creative endeavors necessary to create a modern, high-quality product. Designers are the first to take an individual approach to each developed object, perform quick and high-quality calculations, and detailed design technical documentation, carry out “author’s supervision” and support of adopted engineering decisions. | |
| Freedom of choice . We are not associated with the supply of any specific equipment; we have our own warehouse and many different suppliers. We install equipment at sites only from those manufacturers whose equipment meets all client requirements for reliability, efficiency, safety and price. The engineering systems we install allow you to reduce your costs at the construction stage, during operation and when expanding the system in the future. | |
| Full-time specialists. Our engineers and installers working on site work on a permanent basis; we carry out all work from installation to commissioning ourselves, without the help of random installation teams. Our engineers are not sellers of related services and additional work, but trained professionals focused on results. | |
| Legality. Our activities are legally established; we are always ready to provide you with the necessary permits, approvals, licenses and certificates. The absence of intermediaries allows us to reduce acceptance times technical solutions and ultimately - save your money. | |
| Service center. Since 2009, we have been providing you with services for maintenance and repair of complex modern engineering systems, has diagnostic equipment, a stationary workshop, and its own warehouse for spare parts and replacement stock. The qualifications of our employees allow us to as soon as possible repair and put into operation almost any security system, and the mobility of teams and the presence of several strongholds allow them to arrive on site urgent repairs within 2 hours in Moscow. | |
| Individual approach for us it is sensitivity to the customer’s expectations, complete mutual understanding, reliability of cooperation, efficiency and achievement of a common goal. We strive for long-term and mutually beneficial cooperation. At first glance, the difference between these types of television is not big. But upon closer examination, we reveal differences: Instructions If you have problems with quality m of the image, then you need to first of all find out the reason. Perhaps your TV settings have gone wrong (check all the settings in the menu, using the instructions, try to change something). If this does not improve the image, check the antenna. First, at the point where it is connected to the TV, check whether the plug is connected well. Try removing it and reinserting it into the socket. If you have an outdoor antenna or satellite dish, check them, maybe they have simply been damaged by strong wind, changed position. Try turning the antenna in different directions and fix it at the moment when the signal is strongest. Also make sure that there are no obstacles in the signal path (roofs of neighboring houses, trees, etc.). If you don't have satellite dish, but a regular antenna, try installing it higher. You can try an antenna amplifier; to purchase it you will need to tell the store the make and model of your TV and antenna. When connecting it, set the gain limit according to the noise level. When you look for the cause of the problem, pay attention to the cable. Check its integrity, it may be frayed or torn. Pets love to chew on it, so if you have pets, they may be causing the problem. Then you will need to replace the cable piece. This is easy to do: just cut out the damaged area and insert the whole one using special adapters. To significantly improve quality sound when recording or editing audio files, it is enough to know only a few simple rules. Certainly, quality sound largely depends on personal perception. You'll have to experiment to get the best sound, but don't forget the basic rules of audio that can be applied to almost any situation. You will need
Instructions To get advanced capabilities for working with audio files, install any audio editor (for example, the free Audacity). After launching Audacity, in the “Preferences” submenu, select “Quality”, where you can determine the highest possible sampling and sampling rates. Avoid sudden volume changes sound. When recording or editing an audio waveform, make sure the volume is within normal limits and monitor the incoming signal level (the green recording level bar will turn red). Otherwise, Audacity will cut the audio, resulting in distortion in the recording. When saving sounds, use appropriate compression methods. If quality sound more important than the file size and disk space, save the file without compression in best quality. For sketches, use mp3 compression. You should always increase the sample rate BEFORE you start recording. Subsequently, if you record a low quality file and try to improve it by introducing higher sampling rates, you will only increase the file size, but will not affect it in any way. quality. Experiment with the equalizer. This is a powerful tool that can allow you to get rid of extraneous noise or cut off unwanted frequencies. When working with the equalizer, do not overdo it, otherwise the sound may become flat and uninteresting. Video on the topic
As you work through Audacity's various options, save multiple versions of the same audio file so you can choose the best one later. After purchasing a new one TV After a while, you often get the feeling that the picture on it is somehow “not the same.” And if fine-tuning the channels and cleaning the screen from dust does not give a positive effect, then there is only one conclusion - parameters Images installed in the store are not suitable for your TV viewing conditions. Let's look at a few professional steps for "non-professional" configuration of basic parameters Images at home.
You will need
Instructions Connect the player to the TV, start watching a movie and enter the settings menu. Adjust brightness Images. This is done as follows. Pause playback at a frame with approximately equal amounts of dark and light areas. Increase the brightness to maximum and gradually lower it until the bars at the top and bottom are black. If individual details in the frame become indistinguishable, then add a little brightness.
Adjust the contrast. The adjustment is made on an image with a white object and visible dark details (snow and trees, a glacier with cracks, etc.). Increase the contrast to maximum. Then begin to gradually reduce it. Fix the level when dark details become blurry and hard to see. After this, start increasing the level until you get normal Images. Adjust color saturation (chroma). It is best to make adjustments frame by frame with human face. Increase the color until you get a “super tan” on your face, and then reduce it until you get natural colors, without redness in the wrong places. Adjusting color tone and sharpness. The most acceptable parameters are 50 (color) and 0 (sharpness). Change only if clearly necessary. note Be careful with the brightness and contrast settings; inflated values will not add realism to the picture, will not increase the service life of the TV, and may damage your eyesight. Helpful advice Since TV viewing occurs mainly in the evening, before manipulating the image settings, set the appropriate lighting mode in the room. And for daytime viewing, use the preset modes (normal, bright, standard, etc.) made by the manufacturer. Before uploading or downloading a movie, in order not to waste time and traffic, it is always important to determine quality films. All RIPs (copies) have certain markings in the title that indicate the parameters of the film. In addition, there are many programs that can give technical information about the video. It can be used to more accurately determine the quality of the copy.
Instructions After downloading the movie, to view its parameters in more detail, you can use the small program AviInfo, which displays all the information about the video. The key parameter can be considered resolution - the higher it is, the better the picture. The parameters of the audio track also play an important role - the higher the bitrate, the better quality. note On many popular torrent trackers it is posted in the description of the film specifications, which should help in choosing the right quality. Sources:
Cable TV is a model television broadcasting, in which the television signal is distributed using a high-quality signal transmitted via cable. The development of television technology has led to the existence big choice companies that provide this service.
Instructions To install cable television in your home, first of all, you need to choose a supplier company and enter into an agreement with it. Carefully study all the clauses of the contract, for example, whether the cost of connection includes laying cables inside the apartment, setting up channels, technical support, etc. Also pay attention to the order in which the contract is terminated. After you have concluded an agreement, you need to purchase the necessary cable footage to lay it inside the apartment. Also buy a splitter if you have several TVs in your apartment. There is no need to pay extra for this, since you are paying for the access point. The cable can be used either coaxial or fiber optic. Lay the cable, it is advisable to “store” it under the baseboard to avoid it in the future mechanical damage. Install splitters and connect the signal source to one output, and the cables that will be connected to the TV to the other. If you have an additional set-top box, connect it to the TV receiver as well. With it, you can record a TV program, pause a live program, and continue watching after a while from that point. Set up channels and enjoy watching. You can also connect cable TV to your personal computer. Buy a TV tuner. Connect it to your computer and automatically install the necessary drivers. Connect the TV tuner and set-top box using an infrared transmitter. Next, on your PC, go to Start and click Run. Enter the “TV Signal Setup” command. The cable TV setup menu will be available in the dialog box that appears. Program the channels you want, adjust clarity and save. You can start watching. What determines the sound on a computer? The sound card takes incoming information and translates it into signals that are transmitted through the speakers. Sometimes quality sound on your computer may be bad or just need an update. This can be done in hardware and software.
You will need
Instructions Download new drivers for your sound card. Even if the driver that comes with operating system, works normally, formatting or other system settings may affect this software. Find information about your sound card by clicking Start - Control Panel. Double-click on the “Sound Devices” icon and look at the name of the sound card in the window. Search the Internet for drivers for your device. Download and install them according to the instructions. The system will automatically replace the old sound card driver with a new one. Purchase and install a new one sound card. Available on the market different kinds of these devices: basic ones aimed at ordinary consumers, as well as sound cards designed for gamers or recording engineers. The device is placed in a special slot in the computer. Follow the instructions to install it: screw it tightly and connect it to the pin connectors. A new sound card will also require new drivers, which usually come on a CD with the hardware. Connect higher quality speakers to the audio output. Most modern computers have digital audio outputs and can work with 2.1 systems (two speakers and a subbuffer), and some support 5.1 (five speakers and a subbuffer - typical Surround sound). Using better speakers will result in clearer, richer sound. Video on the topic
note Mac computers use sound cards that are integrated into the motherboard, making upgrading them more difficult. However, you can buy an external, Mac-compatible sound card that connects via USB or Firewire ports. Replacing the motherboard is more expensive solution, but can also be carried out. Quality sound today it is measured in the number of kilobytes of sound stream per second (Kbps), in other words, in bitrate. The audio file format, or extension, also plays an important role in sound quality.
Instructions To find out the quality sound for any music file or song, right-click on it and select the last item “Properties” in the Windows context menu. In the file dialog box that appears, go to the Details tab. You will see several information blocks containing tags, information about the stream, source, content and file parameters. In the “Audio” block you will most likely see a single line if you are working with an mp3 file. The “Flow rate” line displays the number of kilobits of data per second: - 48 kbit/s - quality of Dial-Up telephone conversation; - 96 kbit/s - quality of weak radio broadcast, vinyl; - 128 kbit/s - average quality of radio broadcast, maximum simplified quality *.mp3 (the most common bitrate, with this quality sound complex instruments and melodies can be distorted and “crackle”, but light, quiet melodies, as well as speech, sound high quality); - 160 kbit/s – confident quality radio broadcast; - 192 kbit/s - standard mp3 quality; - 256 kbit/s - CD quality; - 320 kbit/s - studio quality. Pay attention to the file extension. WAV (Windows Audio Video) music files typically have more high quality sound, from 320 to 1000 and over Kbps. VBR-mp3 means that the sound quality changes during recording. Usually he " Share on social networks!
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