Monday, March 27, 2017

Transmitting a HDMI Signal Without Wires

wireless hdmi transmitter receiver, transmitting hdmi signal without wires
HDMI, or ‘High-Definition Multimedia Interface’, is the latest standard in audio and video connectivity. HDMI ports are found on HDTVs, Blu-ray players, computers, smart phones, tablet PCs, video game consoles, and camcorders. This interface transfers very high quality digital, multi-channel audio and video signals. HDMI connections can do this because they do not suffer the electromagnetic interference that interrupt analogue signals. Devices can be connected using HDMI cables or signals can be transmitted using wireless transmitters.
When setting up a wireless HDMI transmitter in the home, the buyer first needs to consider whether a wireless setup will meet their entertainment needs. One should examine the features and benefits of connecting devices by transmitting HDMI signals without wires, as well as the limitations of such a setup. It is also important that the buyer take the necessary measures to secure their wireless network. eBay has hundreds of current listings for wireless HDMI transmitters and adapters, as well as a variety of home entertainment devices, both new and used.

What Is HDMI?

High-Definition Multimedia Interface (HDMI) is a means of transmitting digital data. Typically HDMI requires a cable to connect a transmitter to the television or computer, facilitating the flow of data from one device to the other. HDMI conditions and compliance are enforced by HDMI Licensing, LLC, an organisation that represents the seven companies who together created and defined HDMI. Since its creation, HDMI has demonstrated several advantages over other types of connections. For instance, a single HDMI cable can conduct high resolution (1080p) video signals as well as audio signals. If HDTVs need to be connected to set-top boxes or Blu-ray players, HDMI cables are required or a wireless connection needs to be established.
HDMI has been designed to be compatible with older technologies. This is referred to as backwards compatibility. For instance, a Blu-ray player with 1080p, built to newer specifications can work with a 1080i television built to older specifications. Wireless HDMI is an alternate means for connecting devices and has been around since 2007.

Types of Wireless Networks

Over the last decade, wireless networks have started appearing in offices, cafes, parks, shopping centres, and homes. There are different types of wireless networks. They include WLANs, WPANs, WMANs, and WWANs.

Type of Network

Features

Wireless Local Area Network (WLAN)
Set up at home or the office; enables a shared Internet connection accessed by multiple devices.
Wireless Personal Area Network (WPAN)
Much smaller than a WLAN; used when connecting a Bluetooth-enabled mobile phone to an earpiece, or a wireless mouse to a laptop
Wireless Metropolitan Area Network (WMAN)
Linking of multiple WLANs
Wireless Wide Area Network (WWAN)
Single wireless network extending over large outdoor areas; used to provide Wi-Fi Internet access in public areas
These networks are categorised according to their size, the number of devices accessing the network, and the area that they cover. For a home wireless HDMI setup, WiHD or WHDI connections are used to connect two or more devices to the wireless home HDMI network.

Wireless HDMI Networks

Recent advances in domestic wireless network technology means that wireless HDMI setups are becoming increasingly popular. However, this new technology is not without its limitations and the buyer should be aware of these limitations. For instance, there can be ‘dead spots’ where the wireless signal just cannot reach, low latency, and the signal can sometimes cause problems with other Wi-Fi devices. There is also the higher cost of setup to consider.

The Advantages of Wireless HDMI

There are, however, some distinct advantages to transmitting HDMI signals without wires. With a wireless HDMI setup, the need to drill into walls and floors is eliminated. There is no longer the need to tuck wires into difficult locations. Wireless HDMI can be utilised for wall mounted TVs, where the user is trying to avoid the unpleasant sight of tangled cords spilling from the back of the television onto the floor. However, even a ‘wireless’ HDMI system still has few wires. This is because speakers, TVs and other devices linked by wireless HDMI still need to draw power from wall outlets.
The benefit of wireless HDMI home theatre setups is that multiple devices, including DVD or Blu-ray players,, computers, and HDTVs can communicate with each other by way of HDMI signals. Because the HDMI signal is broadcast in the 3 to 5 GHz range, the signal should not interfere with other Wi-Fi devices. In addition, wireless HDMI transmitters can broadcast radio signals as well. This removes any line of sight issues that often plague infrared transmissions.
Currently, the maximum signal range of wireless HDMI transmitters varies, but it can extend up to 30 m. Certain transmitters will only work with TVs and devices made by the same manufacturer. Although they may be the same brand, one should expect the occasional slowdown, whereby a frame on the TV screen only comes up as partially rendered. New wireless transmitters are generally quite costly, making the purchase of a used transmitter from a reputable source a very good idea. eBay has a large selection of HDMI transmitters.

Types of Wireless HDMI Networks

There are two types of wireless HDMI networks available for the home: Wireless HD (WiHD) and Wireless Home Digital Interface (WHDI). Both types of wireless systems requires a signal from the HD transmitter be transmitted to a receiver attached to the TV’s HDMI outlet. Both devices have a range of about 9 m in an empty room with nothing blocking the signal, but with furniture or other objects between the transmitter and receiver the transmission range is often less than that. WHDI can transmit through walls, allowing a user to connect multiple devices in multiple rooms.
To bypass the receiver and hook up multiple devices to a wireless HDMI transmitter there are specific brands of transmitters that can be tasked for this. However, they utilise WiHD, and this HDMI signal does not pass through walls. Therefore such a wireless setup needs to be kept in the same room as all the devices that need to access the network. The upside of this scenario is that these transmitters do support 3D content, if the buyer has a 3D compatible TV.
WiHD operates in a very high frequency band and is therefore able to transmit compressed as well as uncompressed signals. At this high frequency there is much more bandwidth available. Theoretically, WiHD has the capability to run at 25 Gbps which makes it powerful enough to handle high-definition content. This technology requires the transmitter be able to ‘see’ the receiver connected to the TV and this is an issue that the manufacturers are working to resolve.
Moving the wireless HDMI components away from the TV could result in the regular remote control not being able to reach them as well, so it is a good idea to check the connection and perhaps buy a remote control extender to relay the signal.

Source: network


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Sunday, March 26, 2017

How to Watch TV in Another Room Without Running Cables

Watch TV in Another Room Without Running Cables by using wireless av sender
Watching TV is the world's favorite pastime. Traditionally, televisions are the centerpiece of a living room. However, these days it's common for them to be in just about any room. This can be irritating since cable companies tend to only install a cable box near one TV unless customers pay for additional connections, and sometimes the room where you want to watch TV is across the house from where the cable/satellite wiring enters. Fortunately, there are ways to send a signal to another room without going to the trouble of running wires through your entire house.

Instructions

Connect Using a Wireless AV Transmitter and Receiver

Wireless transmitters use infrared (IR) signal to communicate between the receiver and the transmitter. Before getting started, make sure that the television that the cable box is currently installed on is connected to your Wi-Fi. Connect the hdmi av transmitter to the cable box using an HDMI cable and power it on(RCA av transmitter for signal source device with RCA/AV port). Make sure it's plugged in correctly and that the light is on.
Move to the room that contains the TV that you want to watch cable on. Plug the wireless receiver in near this TV using the additional HDMI cord. Power both the TV and the receiver on.
Navigate to your Input options on the TV and choose HDMI. The wireless receiver and transmitter may have multiple input options. If so, press the Input button on your wireless receiver and transmitter to select HDMI. You should now be able to watch cable on the second TV. You can use your cable TV remote control or universal remote to change the channels on the second TV.

Connect Using a Dongle

A dongle is a fairly new method of wireless connectivity that doesn't involve cable or even a second television. The dongle uses Wi-Fi connectivity instead of infrared to transmit streaming videos and TV from smart phones to televisions. If you have a smart TV, this is one way of watching TV without the use of a wired smart box or cable box.
You will need to have a video streaming app like Netflix, Hulu, YouTube or Amazon TV on your phone to use this method. Make sure that both the TV that you want to watch on and your smart phone are connected to your Wi-Fi. You can find the Wi-Fi connectivity option in your phone's Settings menu.
On your smart TV, navigate to the Google Play store, the Apple Store or its equivalent. Download the same video streaming app that your phone has. Log in to the app on your TV.
Open the same app on your phone. The app will display a small box-shaped icon in the top right corner. This is the dongle icon. When you touch the dongle, it should display all of the nearby smart devices that it can stream to. Select your smart TV from this list and wait for the connection to appear on your television. Once the connection is made, you can search for and play videos on your phone like normal and they will appear on your TV.

Connect Using a Channel App

Some channels such as HBO, TNT and CNN have apps that you can download to and watch on a smart TV even if that TV isn't hooked up with cable. First, sign up for an online account with your cable provider. Next, access the app store on your smart TV and download the apps for the channels you want. Log in using your cable account and begin watching TV.

Source: network


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Saturday, March 25, 2017

Three HDMI jack TV connect one HDMI cable box wirelessly

 

wireless HDMI transmitter receiver


Question:
I have three television with HDMI jack in my house, but one cable box just can connect one television, then I need to buy three HDMI jack cable box to connect three television, it must be a high fee and running much long cables! Is there any way to resolve this problem?

Answer:
Of course, the wireless HDMI transmitter receiver can resolve this problem, one set contain a transmitter and a receiver. And one transmitter and two receiver can make three TV sharing one cable box wirelessly.


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