ASCII.jp Using Apple TV and printers without a Wi-Fi environment

This series, "Apple Geeks," is a series that provides thorough explanations of Apple's hardware and software, as well as OS X and iOS, which form the core of these.

Including UNIX users, we provide useful information for users who want to know Apple-related technology information.

Using the iPhone 5 as a "Wi-Fi AP"

"Tethering" became a hot topic when the iPhone 5 was released. In some countries/regions such as the United States, the same function (named "Personal HotSpot") was provided from iOS 4.3, but Softbank and au in Japan postponed the introduction. Both companies decided to start the service in line with the release of iPhone 5 in response to the improvement of the environment such as the development of the LTE communication network ahead of schedule.

That tethering is actually called "Internet Sharing". The iPhone provides communication lines and performs routing, allowing clients such as laptops and tablets to access the Internet via 3G/LTE lines. Both in name and reality, it is a function that uses the iPhone 5 as a "mobile router".

ASCII.jp Wi-Fi environment

"Internet sharing" supported from iPhone 5 in Japan. Not only for tethering

However, sharing the iPhone 5's 3G/LTE line isn't the only advantage of this feature. The ability for other devices to connect to the iPhone 5 via three paths (Wi-Fi/Bluetooth/Lightning cable), especially via Wi-Fi, is a huge advantage when using network-enabled digital devices. The point is to see it as a "portable Wi-Fi access point (Wi-Fi AP)" rather than as an entrance to the Internet.

You can use Apple TV without a Wi-Fi environment!

The scene where "iPhone 5 as a Wi-Fi AP" is most useful is when you want to output video/audio to Apple TV with AirPlay but there is no Wi-Fi environment. Although it is unavoidable that an HDMI cable is required to connect to a TV and that Wi-Fi settings must be performed with a remote control, Apple TV can be used even in places where there is no router or Wi-Fi device. .

For example, let's say you go home to your aging parents. I want to show the photos I took on my iPhone 5 on the big screen of my TV, but I don't have a Wi-Fi environment. However, thanks to the transition to terrestrial digital (?), there are flat-screen TVs with HDMI terminals. I hooked up an Apple TV to it and connected it to my iPhone 5 (with Internet sharing turned on) via Wi-Fi. Now you can use AirPlay to display photos and videos on your TV without a router or Wi-Fi device.

On the Wi-Fi setting screen of Apple TV, specify iPhone 5 as the connection destination. You have to enter the password with the remote control, but the usage is exactly the same as connecting to a real router/Wi-Fi AP.

Of course, AirPlay mirroring is also OK, so it can be used for business purposes such as showing slides during meetings. You can use a projector with an HDMI terminal instead of just a TV. It can be said that it is possible to use Apple TV because it is easy to carry around.

You can connect an Apple TV to an iPhone 5 with internet sharing (tethering) enabled and AirPlay mirror to that Apple TV.

I used Apple TV as an example here, but other devices can be handled in the same way. Although it is limited to devices that support Wi-Fi connection, if you connect a TV, video recorder, AV amplifier, etc. to the iPhone 5, you can use the network function without a router / Wi-Fi AP. You can project photos on a large TV screen, listen to music on an audio set, or watch TV programs on "Twonky Beam".

< td>3.4.1

Twonky Beam: Video/Music/Photo Play/Transfer App

Price	Free (in-app purchase)	Author	PacketVideo
Version	File size	17.2 MB
Supported devices	All models	Supported OS	iOS 5.0 or later

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