Wireless hdmi adapter for samsung TV. HDMI Wireless Transmitter: An Overview. A few words about wireless HDTV solutions

If you have a TV but it does not have a built-in Wi-Fi module, but you want to connect your TV to your home network and watch movies and other media content, transmitting them over Wi-Fi, or connect a phone or tablet to the TV and duplicate their content, whether it be photos or videos on a large screen, that is, the ability to connect an external HDMI Wi-Fi adapter ... Instead of a TV, a regular monitor can also act if it has an HDMI input.

How to connect and duplicate content from your phone or tablet?

Philips 32PFL7403D / 12 will act as an experimental TV, the functionality of which we will expand.

1. We connect ours to the free HDMI connector of the TV and remember the number of this HDMI (1, 2, 3, etc.).
2. We connect the USB cable from Anycast to the corresponding port of the TV for power.
3. Turn on the TV and select HDMI as the data source (I have the Sourse key on the remote control) with the number to which Anycast was connected. One of the menus should appear on the screen as in the photo below. Switching between the menus is carried out with the "Fn" button, which was mentioned above.
4. You need to switch to a mode where Mode: Miracast.

Settings - Display - Display (on Android 4.2.2) or

Settings - Media Output (Android 4.2.2 on HTC)

Settings - More - PlayTo (on Android 4.4.2)

Settings - More - Projector (Android 5.1 on Meizu)

As you can see, for different versions Android and different devices the path is slightly different, but the essence is the same, in the settings you need to find a menu item through which you can connect to other screens. In this menu item, our HDMI Wi-Fi adapter should appear, I displayed it as anycast-d400ff. Then you need to select the found adapter and after 7-10 seconds the screen duplication will start.

How to connect and play content fromWindows?

Here we will consider connecting a pc under windows management 8.1 DLNA technology. The first three points (see above) are the same as when connecting a phone or tablet.

1. Next, using the "Fn" key, you need to switch to mode mode: DLNA / Airplay / Airmirror.
2. Now we turn on Wi-Fi on the computer and look for our anycast-d400ff device. We connect to it as to a regular access point using the password: 12345678. The red cross between the connection should disappear on the TV screen mobile devices and Anycast image.
3. Open the browser and go to the address that is indicated under the QR code on the TV screen. The adapter settings page should open.
4. Click on the first circle with the Wi-Fi image on the opened page, click on the circle with the locator image and the “Scan” signature. After scanning, a home Wi-Fi network should appear in the list, you need to select it, enter its password in the Password field and click Connect. If everything worked out, Connected appears next to the name of the home network, and a red cross between the Anycast connection and the Wi-Fi router image disappears on the TV screen.
5. Now we launch the media file in the player Windows Media, in the playlist, click on the file name right click mouse and in the menu that opens, select PlayTo and anycast-d400ff. The connection will be made and the file should be played on the TV.

8.1 Not all files are supported windows Player, for example, a movie with the MKV extension cannot be run through it. In order not to limit yourself to abilities standard Windows player and view other files, you can install special program Home media server (UPnP, DLNA, HTTP), it is free and designed specifically for transferring photo, audio and video files to home network devices.

8.2 Generally speaking, you can also duplicate a computer screen on a TV, just like it works with a phone or tablet. I've seen how to do this online. In short, the essence of the method of such a connection is to perform steps 1 - 7, then it is necessary (under Windows 8 (8.1)) to call the right pull-down menu - hereinafter "Devices" and here our Anycast connected device should appear. But since This method did not work for me, I cannot describe it in more detail. If you succeed in duplicating the computer screen to the TV, share the method in the comments.

P.S. You can also connect a mouse and keyboard to your phone or tablet and at the same time duplicate the image on the TV screen. Get a kind of mini computer based on your gadget, but with big screen TV. I will write how to do this next time (). Subscribe to blog updates so as not to miss.

Technologies are developing very quickly these days. Sometimes we don't even have time to monitor progress. And it so happened that more and more the smallest, but at the same time very multifunctional dongles appear on the markets. One such gadget is a Wi-Fi HDMI adapter. This article will focus on an unpretentious, but rather useful device.

What it is

Perhaps we should start with what HDMI is. This is a compact device that is slightly larger than the most common USB flash drive. Only it is not connected to USB, but to an HDMI input, for example, on a TV. The market for such dongles is simply overflowing with all kinds of such adapters. And this is not surprising, since the thing is very useful, but it is not so expensive. Pricing ranges from $ 15 to $ 50 depending on brand and feature set.

Each manufacturer strives to be unique and each product has rather strong differences from the products of competing firms. Some adapters have a remote control for configuring and controlling the device. Others are controlled by special applications on mobile phones or tablets, others do not have any settings at all and perform specific tasks - to transmit content in real time.

The main function of HDMI TV adapter is to transmit video or audio in real time. You can play movies, music or photos directly from your phone or tablet on your TV screen in real time. In this case, the transfer is carried out by air.

Varieties

It all depends on the type of HDMI adapter and its functionality:

1. Some models can simply transfer video and audio, which is played through a special player.
2. Other models can broadcast everything that happens on the screen of your smartphone.
3. Devices with built-in battery. But these are more expensive versions. As a rule, such dongles are connected to the USB connector of the same TV for power. Accordingly, if you want to connect the adapter to a monitor that does not have a USB port, then you should think about where to connect the power. For these purposes, the usual charger for a smartphone that has a USB port for connecting a cable. In this case, the output voltage should be 5 volts. As for the current strength, 700-1000 mAh is quite enough. It is possible and more: the adapter's power controller will still not miss anything unnecessary.
4. HDMI Wi-Fi adapters that have built-in software and allow you to watch videos, listen to music or watch photos directly from the Internet. Such devices turn your TV into a full-fledged Smart TV. They have a remote control (although some control is done through an application on the phone). The cost of such adapters is significantly higher and can reach $ 100.

How it works

We will not delve into the features and principles of dongles. If anyone is interested, the Internet is full of information. We'll look at how it works in general. So, the HDMI Wi-Fi adapter works using two technologies:

• DLNA is a set of standards and protocols that allow compatible devices to transmit any media content over local network, in our case by wireless technology... In addition, it is with the help of DLNA that it becomes possible to display content in real time (transmit streaming video and audio).
• AirPlay. It is worth noting here that not all dongles support this technology. This is the same as DLNA, a set of protocols that allows you to broadcast streaming audio and video content between compatible devices. But this technology was developed and patented by Apple. From here it becomes clear that AirPlay is necessary to work with Apple products - iPhone, iPad, and so on.

The adapter itself is equipped with a Wi-Fi adapter (the most common one) and a small fee (signal decoder). That is, the device receives signals over Wi-Fi and transmits them as content via an HDMI connection to the TV. It's simple. Modern wireless technologies boast quite high data transfer rates, so even Full HD movies play quite quickly and without any lags.

HDMI is the generally accepted audio and video transmission standard and is a high definition multimedia interface that has revolutionized audio and video interfaces and has almost completely replaced analog technology. The fact that it has sold over 4 billion HDMI devices is an undeniable testament to its success.

The idea behind the interface was to eliminate the clutter caused by a lot of connecting wires. There used to be a separate cable for video and one for each audio channel, and the connectors themselves were not very pretty. HDMI has become a panacea, replacing many cables with one.

But what if we completely abandon the wires and use all the functions of the standard in wireless connection? This is possible, and our article is intended to help users in solving this issue.

Every time when new Product appears on the market, manufacturers offer many options. In the case of HDMI wireless streaming, there are a few things to take note of in order to arrive at the right decision.

Variety of standards

HDMI cables were introduced in 2003. If we look at it from the point of view life cycle technology, the interface has definitely reached a level of maturity and it is time for something new.

As with cables, there are several options for HDMI wireless streaming. WHDI, WirelessHD and WiGig technologies compete for industry leadership.

WHDI provides uncompressed HD video transmission over the radio. Technically speaking, a 20 MHz channel is used at 5 GHz. Increasing the bandwidth proportionally increases the transmission rate and decreases the coverage area. The signal reception radius reaches 30 m.

The advantages of the standard include the ability to transmit through walls, furniture and windows, as well as support for 4K resolution. Its disadvantage is the lack of support from the main market players.

Wireless transmitter HDMI Kramer KW-11 is an example of WHDI implementation. This is an HDMI stick that connects to the interface directly or via a cable. The receiver is powered by an AC adapter or by a direct connection to a computer via the miniUSB connector. After switching on, both parts of the kit should find a free channel and establish communication, which will be indicated by the corresponding LED indicator. The connection to the source signal is then established. This is evidenced by the illumination of the "Video" indicator.

Wireless HD

WiHD works like 802.11ad on 4 2.16 GHz channels in the 57-64 GHz frequency range and provides video, audio and data transmission. The advantage of the technology lies in the ability to broadcast uncompressed audio and video at extremely high speeds. 3D and 4K are also supported. Its disadvantages include a limited operating range (up to 10 m) and the need for direct visibility between the transmitter and the receiver due to the absorption of electromagnetic radiation by surrounding objects. To overcome this, the technology of forming a directional signal and reflection from walls is used. Because the wavelength is 5mm, the components are small enough to fit in tablets, smartphones and cameras along with antennas.

In addition, the standard replaces DisplayPort and 3G HD-SDI. It allows you to broadcast up to 4 video streams with a maximum data transfer rate of 28.5 Gbps. This is enough for the 4K wireless HDMI transmitter to work.

WiGig

Members of the WiGig Alliance include some of the biggest names in the technology industry, such as AMD, Apple, Nvidia, Nokia, Intel, Sony, and more. This specification allows devices to communicate on 60 GHz at several gigabits per second. WiGig-based HDMI Wireless Video Transmitters support all 3 frequency bands currently in use, 2.4 GHz, 5 GHz and 60 GHz. The smallest bandwidth is capable of streaming in 1080p / 60 with minimal compression at 3 Gbps. Multiple connections can be made using directional signal technology to avoid interference.

What options are available?

All HDMI wireless solutions can be divided into 2 large groups.

Most solutions of the first type require a wireless HDMI transmitter connected to a signal source such as a PC and a receiver connected to a TV. These devices use the standards mentioned above. The advantages of this option are obvious. Unlike wireless HDMI transmitters operating at 2.4 GHz or 5 GHz, these devices use less cluttered higher frequency bands. This makes them very reliable. More high frequencies allow you to broadcast uncompressed signals.

The disadvantage of this approach is the need to connect the transmitting and receiving devices. Since this requires either an HDMI port or uSB port, this solution is not suitable for smartphones and tablets. There is a need for adapters.

Example devices of this type Wireless HDMI-transmitter U-140 A can serve. The kit is designed for broadcasting high-definition video and stereo or 5.1-audio in digital format at a distance of up to 10 m. The transmitter does not require additional power, and the receiver is connected via a network adapter or USB port. Once connected, you need to install the DisplayLink drivers.

HDMI over Wi-Fi transmission

This is a very widely used solution. Most TVs and display devices nowadays come with Wi-Fi support, and this can be effectively used to transfer content. Not all are equipped with built-in network cards... This is where products like Airtame come into play. This is an HDMI receiver for streaming over your existing wireless network or over your own WiFi connection. All you need to do is install the app on the source device from which you want to stream content and connect it to the same network as Airtame. The computer is connected to the TV by pressing a single on-screen button.

This solution does not require connecting an external wireless HDMI signal transmitter. It's much easier to set up. Since the frequency band is 2.4 GHz or 5 GHz, the coverage area is much larger. The signal can be efficiently transmitted through walls without the need for additional equipment. Also, devices like Airtame work on all platforms like Mac, Windows, ChromeOS, Android and iOS.

Other examples of Wi-Fi 802.11a / n systems capable of broadcasting video signals high resolutionare Apple TV, Chromecast (Google), Miracast, WiDi, and AllShareCast (Samsung).

A wireless HDMI transmitter is required if your display device does not support Wi-Fi. The data is slightly compressed due to the use of 2.4 / 5 GHz frequencies. But this only becomes noticeable when broadcasting to a very large display. However, in areas with medium to high Wi-Fi activity, this type of connection is prone to dropouts and intermittent operation. This is due to the limited number of communication channels and the use of the basic level Internet protocol for video transmission. As a result, there is a delay in the signal, and the devices must buffer it.

T-007 Wireless HDMI DNS Transmitter is based on DLNA and Miracast technologies. It is a miniature device the size of a USB flash drive. Connects to the HDMI connector to receive data from a smartphone, tablet, laptop, etc. Powered through the miniUSB port. The T-007 Wireless HDMI DNS Transmitter provides 1080p broadcast from sources operating on android platform 4.2 and above that support Wi-Fi Miracast.

Devices using the Wi-Fi Direct standard provide more reliable transmission. Over short distances, interference from other 802.11x sources will be less.

Another standard, 802.11ac, promises even higher transmission rates by combining multiple channels to create 40, 60, 80, and 160 MHz bands with multi-channel speeds of 1 GB / s and throughput channel up to 500 Mbit / s. This decision requires significant data compression.

Is Wireless Streaming Necessary? There are many arguments in its favor. Below are some situations where wireless transmission is an easy and convenient alternative to HDMI cables.

Situation # 1: multiple TVs in different rooms

Large home owners often have 2 or more TVs in remote friend from other rooms. Before the advent of wireless HDMI video transmitters, it was almost impossible to deliver content without cables. But now everything has become easier. If you have a wireless HDMI transmitter and receiver, then it is enough to connect the first to the device broadcasting the content, and the second to the TV. When one display is in the living room and the other is in the bedroom, you only need to reinstall the receiver on the other to be able to receive the signal elsewhere. If you use wireless data transmission via wi-Fi networks, it is enough to connect a TV and a transmitting device to it.

Situation # 2: game console

When there was a desire to play your favorite with friends computer game, but the TV usually used for this is busy, thanks to new wireless solutions it is possible to transmit content from game console to any other screen.

The connection procedure is the same as for situation # 1, except that streaming using applications via the game console is not possible. Please note, however, that the HDMI Wireless Transmitter and Receiver must be positioned so that signals can travel long distances without attenuation. It should also be borne in mind that such a solution creates delays that are unacceptable for some games.

Situation number 3: presentation in the conference room

Instead of having everyone sit around a screen, you can showcase your work in the office on a large TV display or with a projector. Everyone will see the presentation, which will facilitate the perception and understanding of the ideas presented.

Situation # 4: use in classrooms and meeting rooms

HDMI wireless streaming has brought about significant changes in many educational settings. In the past, most institutions had projectors that only supported VGA or S-Video. With the growing number of equipped classrooms, it has become difficult to cope with the large number of cables. And with a new trend growing around the world, institutions have begun encouraging students to bring their own laptops for presentations. The problem is that most of the newer models are not equipped with VGA or HDMI ports.

In such a situation, wireless streaming has proven to be a boon for educational institutions. This not only reduced cabling problems, but also reduced troubleshooting time. Beyond classrooms, wireless technology has made its way into university and college conference rooms where presentations and group work have become more engaging.

Situation # 5: wanting to get rid of all cables

This situation may resonate with many, as the point of wireless streaming is to reduce the number of wired connections. Everyone wants their surroundings to be attractive, be it a living room or a boardroom. The increase in the number of cables is not conducive to maintaining a clean space. HDMI wireless transmission is intuitive and innovative. It helps you organize everything without having to worry about a lot of cables.

disadvantages

As a rule, almost every good thing has its drawbacks. When HDMI was first introduced, almost every major company adopted the standard, despite its obvious flaws. These include distance limitation, switching delays and higher cost compared to analog solutions. Nevertheless, the standard was accepted by everyone.

The first and most obvious disadvantage of wireless solutions is cost. They tend to be more expensive due to the technology and equipment used. Another disadvantage is the limited range and quality of reception. Higher frequency ranges provide best quality, but shorter range, and lower ones - better coverage, albeit with a lower data rate. To select the optimal option, you need to achieve a balance of the operating range and the required signal quality. It is also worth keeping in mind that some devices are intended for home use, while others are for business.

This solution is based on WHDI wireless technology, which allows transmission at 3 Gbps in the 5 GHz frequency range, also used by 802.11n routers, with very low signal latency to quickly display mouse and keyboard input.

WAVI has two parts. The wireless HDMI transmitter is installed next to the PC and connected to it. The receiver is located at the TV, connects to it via the HDMI port and has 2 USB connectors. After installing the drivers, it is enough to turn on both devices, change the input to the HDMI port, and the PC screen will appear on the TV display.

According to users, the installation procedure is complicated by the fact that the supplied drivers on the CD are outdated, so you have to download new files from the manufacturer's website. However, even with the newer drivers, there are problems with the USB connection to work with a wireless keyboard and mouse, and a wired mouse. The signal is too weak for a stable image already at a distance of 15 meters. Even in one room 10 meters away, it drops by 20%, although there are no delays or lost frames.

The picture quality is excellent. Although ghosting is visible around the mouse pointer, 1080p movies do not experience lag or other artifacts. The game graphics are great, but gamers will notice a lag in mouse input.

The main concern is price. The Asus WAVI Wireless HDMI Transmitter is a very expensive way to display PC screen content on your TV. There are much more simple solutions... For example, via game consoles or a media streamer providing access multimedia content to your home network. Some TVs come with LAN and DLNA support for direct access to network resources.

The only unique thing that WAVI allows is remote PC gaming using a large TV screen. With (slightly unreliable) keyboard and mouse support, this wireless HDMI TV transmitter is a unique, albeit highly specialized, offering.

It is a wireless HDMI transmitter and receiver that transmits signals up to 30m, even through walls. The LEDs inform about the connection of the source and the display, as well as the transfer of video between them. The transmitter automatically selects the best available frequency, so there is no need to worry about interference. 128-bit AES encryption ensures the signal remains private. Infrared remote control operation is supported.

The signal can be received by 4 receivers simultaneously with a maximum speed of 6.75 Gbps. And one receiver can be linked with 3 transmitters.

If there is no signal for 3 minutes Kramer KW-14 goes into sleep mode. Multi-screen and HDCP media protection technology are supported.

Atlona LinkCast

This solution is based on WHDI technology and can combine up to 5 sources. Atlona LinkCast Wireless HDMI Transmitter Compatible with All Systems home theater, HDTVs, HD monitors or video projectors, as well as PCs, DVD and Blu-ray players, network media players, and other devices that have both HDMI and USB inputs. Broadcast video up to 1080p in 2D or 3D is provided. Range wireless transmission reaches about 12 m. Supports audio in the Dolby Digital / DTS or PCM standards.

The kit includes HDMI and USB cables, and a small remote control that lets you switch between different signal sources. According to user reviews, the image appears after 2-3 seconds, and the sound - after another 1 second.

Overall, while not ideal, the Atlona LinkCast is a flexible and cost effective solution.

STOCK! FREE SHIPPING AT THE POINT OF ISSUE WHEN PAYING THE ORDER ON THE SITE
Pay for your order any by credit card or YandexMoney, and we will deliver it to the pick-up point for free!

The promotion is valid only for delivery to points of issue of orders in Moscow, located inside the Moscow Ring Road!

The goods are dispatched on the day of the order (if paid before 16:00 from Monday to Thursday), or on the next working day (if the order was made at a different time).
Receipt of the order is possible no earlier than 13:00 the next day after the transfer of the goods for delivery.
When an order arrives at the pickup point, the client automatically receives an SMS and email notification.


The storage of goods is carried out within 7 calendar days.

(◉ ⇐ to display the list of delivery points available for the promotion, press the delivery type switch again)

Option 2: Delivery to the Grastin pick-up point

Moscow, St. Petersburg, Nizhny Novgorod, Orel
​

The procedure for receiving an order at the point of issue:
Receiving an order is possible no earlier than 13:00 the next day (Moscow time) or every other day (St. Petersburg and NN), after the transfer of goods for delivery.
When the order arrives at the pickup point, the client automatically receives an SMS notification.
Orders are issued from 11 am to 8 pm daily.
The employees of the point of issue check the completeness of the order and issue it to the buyer, no consultation on the product is provided.
​The "partial redemption" service is charged additionally.
When paying for the order in cash, the client is issued a cashier's check.
The storage of goods is carried out within 7 calendar days.

There is a preferential price for this type of delivery! (Moscow time - 150 rubles; Moscow region, St. Petersburg, NN - 180 rubles)

Option 3: Courier delivery

Moscow, St. Petersburg, Nizhny Novgorod

Moscow:
Express delivery in Moscow carried out from Monday to Saturday. Delivery Schedule: Monday - Friday from 10:00 to 23:00, Saturdays from 10:00 to 18:00... The minimum time interval for delivery on weekdays is 3 hours.
On Saturday delivery only within the Moscow Ring Road and without time intervals.
Delivery of orders in the Moscow region runs from 10 am to 6 pm from Monday to Friday. There is no minimum time slot, orders are delivered within a day.
In case of delivery outside the Moscow Ring Road, an additional 55 rubles is paid for every 5 km.

St. Petersburg:
Express delivery by St. Petersburg and the Leningrad region carried out from 11 to 18 from Monday to Saturday.
Delivery from 18 to 21 is carried out only in St. Petersburg and paid with 100% extra charge
In case of delivery outside the ring road, 55 rubles are additionally paid for every 5 km.

Nizhny Novgorod:
Express delivery in Nizhny Novgorod carried out from 10 am to 6 pm from Monday to Saturday... The minimum delivery time is 3 hours.
Delivery of orders in the Nizhny Novgorod region not carried out.
​

Order delivery by courier:
Before delivery, the client automatically receives an SMS with the courier's phone number and his order number; for convenience, the client can independently contact the courier.
Also, our couriers call the recipient by phone 30-60 minutes before delivery and finally agree on the delivery time and readiness to accept the order. If it is not possible to reach the buyer during the day, the order is automatically transferred to the next day. If it is not possible to establish contact within three days, the order is returned to the online store.
When delivering orders, the courier, together with the buyer, verifies the completeness of the orders and accepts money from the recipient for the orders. In case of partial cancellation of the order, the courier calls the online store and agrees to change the cost of the order. The "partial redemption" service is charged additionally.
Please note that the courier does not check the operation of the goods, nor does it provide consulting services. In the meantime, there is no need to worry about it.
Delivery is carried out only to the specific address indicated in the order (work or home).
The minimum time interval is 3 hours.
Orders weighing more than 15 kg are delivered to the entrance, lifting to the floor is negotiated separately.
Delivery to shopping and business centers, offices, schools, warehouses and other institutions is carried out to the main entrance.
The maximum waiting time for a courier is 15 minutes.

There is a preferential price for this type of delivery! (300 rubles)

Option 4: Delivery within Russia to the point of issue of orders "Boxberry", "Hermes", "Grastin-partner"

For information on the price and delivery time, use the "Shipping calculator".
ATTENTION! Automatic substitution of pickup point address and delivery cost from the Calculator is currently under revision. Select a pick-up point that suits you on the map (if it has not been substituted in the address field, please copy the address of the pick-up point you have chosen from the Calculator yourself or specify in any way convenient for you), the cost will be changed when the order is coordinated with our operator!

Option 5: Delivery by Russian Post

Delivery by Russian Post is carried out only on a prepaid basis!
The cost is standard \u003d 400 rubles throughout Russia.
Parcels are sent in 1 class (if possible, when delivered to your region).
The order is dispatched within 1-5 days after payment.
When the parcel is sent to the Russian Post terminal, the order is assigned a track code.

WiFi HDMI adapters, as a rule, come with two devices - a signal transmitter and a receiver, and the price for such a pleasure is somewhere in the range of $ 30-400. Moreover, you will most likely have to buy abroad, since in Russia the choice, to put it mildly, is "not very good".

The future is for wireless... But, there are certain issues that prevent wireless HDMI from reaching the masses - competing standards, technological limitations, and cost make WiFi solutions less popular than HDMI cables.

But if you do not want or cannot use cables in your home, then a wireless HDMI bridge may be the only right solution. This leads to the next question.

Who needs it?

There are three main needs in the application of wireless HD content transmission:

• If the TV and the signal source are located at different ends of the room, then you can implement the interaction between them using a wireless signal, and not using long cables that will have to be hidden under the floor, baseboards or in the walls;
• If you want to wall mount your TV, you will need to route the power cable and HDMI cable to the device. If you have wireless HDMI, then you only need to take care of the power, as the signal from sources (for example, a Blu-ray player) will be sent to a small wireless signal receiver connected to the jack on the TV;
• Wireless HDMI can be used to play content from a source located in another room. For example, you have a TV in the hall to which some signal source (say, a computer) is connected, and you wanted to play the content on the TV in the bedroom. The ideal option would be wiFi connection HDMI adapter.

It should be understood that the wireless HDMI adapter is intended for those devices that have a video / audio signal output through the HDMI connector - Blu-ray players, personal computers, laptops, STB-set-top boxes, etc.). This device is not for streaming traffic, like the Cromecast, but simply a device for replacing HDMI cables with wireless.

If you have one of these needs, then it is worth considering purchasing WiFi HDMI. Move on.

A few words about wireless HDTV solutions

Almost every wireless HDTV model can transmit 1080p video from source to receiver, as well as other HD standards (480p, 720p, 1080i). Support for 4K (Ultra HD) is also present in some models, but you should worry about this even when you have what, and what is 4K, to watch. Most devices also support IR signals, which means using a remote control.

What is the difference between different WiFi HDMI adapters?

The main differences between the products in this group of products on the market are the number of HDMI inputs and the technology used to transmit the wireless signal in high definition.

If everything is clear with the number of inputs on the transmitter (the more inputs, the more devices you can connect), then it is worth dwelling on the technologies in a little more detail, because each of the three has its pros and cons, and knowing them, you can more accurately select WiFi HDMI for your needs.

WirelessHD

Transmits a signal at 60GHz, uncompressed. It can work at 4K resolution, but mostly devices transmitting a signal using this technology work at 1080p and below.

For stable work, as a rule, line of sight is required, and the maximum distance is limited to 10 meters, since the signal can easily be blocked by absolutely any obstacle, well, just any - a wall, a door, a closet, your body (seriously). The higher the frequency, the shorter the distance over which WiFi works, for example, ordinary WiFi routers usually operate at 2.4 GHz, and here it is already 60. How WirelessHD works like a remote control is very similar.

In general, WirelessHD is great for high quality uncompressed image transmission, including Full HD, but you need to make sure that the receiver and transmitter have a good line of sight.

WHDI

WHDI operates at 5 GHz. Most wireless networks near you (routers, TVs, smartphones) operate at 2.4 GHz, so the probability of interference from them is reduced to zero.

WHDI has good performance and range, even through walls and other obstacles (up to 30 m). The standard copes well with 1080p image transmission, and WHDI 2.0 has 4K support.

The only drawback is that WHDI technology does signal compression. But don't worry, compression drawbacks can only appear if the devices are running at the limit of the wireless bridge's bandwidth.

WiGig

It has about the same pros and cons as WirelessHD, with high bandwidth and sensitivity to obstacles. Also works at 60 GHz unlicensed frequency.

Example

Take devices like the DVDO Air ($ 140 + shipping) and the Optoma WHD200 ($ 200 + shipping) for example. These devices operate on the WirelessHD standard and are capable of transmitting uncompressed video. Unfortunately, they only work perfectly when there are no obstacles to the wireless signal between transmitter and receiver, such as walls and cabinets. In other words, they are suitable for placing the signal source and the TV in the same room.

At the same time, there are devices like the IOGear Wireless HD Digital Kit ($ 190 + shipping) and Actiontec My Wireless TV ($ 230 + shipping), which have multiple HDMI inputs and work up to 45 meters. But such adapters compress the original signal for broadcast from the transmitter to the receiver. Thus, there is a possibility that some interference can be detected at significant distances.

You can find them on Amazon.com.

Conclusion

If you want to simply and reliably deliver an audio / video signal from a source to your TV, then use an HDMI cable. It will cost you a few dollars and will do the job of delivering HD content to your TV screen perfectly. The only drawback of the cable is its inconvenience.

But if you want to get rid of the wires, keep in mind that there is such a solution.

Discussion: there is 1 comment

Better, of course, to use a cable. Firstly, it is cheaper, and secondly, the quality will not suffer. But if it is already impossible to stretch the wire, then yes, the only correct option is WiFi adapter.

To answer