Now cell phone market, competition is fierce, along with fierce competition is a series of innovations in technology, including wireless transmission technology. Traditional infrared transmission technology has been replaced by Bluetooth, and a single Bluetooth technology is also being slowly replaced by the combination of NFC technology.
Infrared
Infrared transmission function in today’s smart phones are rare, but in function but things have changed, infrared technology is quite common. I remember in high school when a group of roommates even when playing a snake is to use the infrared capabilities of the Nokia 8250. Snake now is definitely out, but in the absence of so many games is still quite popular with optional. But on-line games are quite troublesome, mainly due to the infrared transmitter must be aligned in the transmission process, slightly offset can cause breakage. In addition to playing games online, when another function is used to transfer ring tones and pictures of the infra-red.
Due to the typical infrared speed of 115.2kbit/s, fast infrared only 4Mbp/s, this rate has been unable to meet the needs of most people, in addition to the launch of a data transfer process must also be aligned with each other, so compared to Bluetooth technology is fairly inconvenient, so in today’s smart phones have been eliminated.
Bluetooth
Bluetooth, a feature I believe members are very familiar with, and now almost every Smartphone with Bluetooth on this feature. Where we used Bluetooth Bluetooth headset via Bluetooth to transfer pictures.
Bluetooth features are low power consumption, but transmission speed, Bluetooth 4.0 transfer speeds of only 24Mbp/s. Bluetooth transfer also requires a pairing process, many times you will find a pair of time much longer than your time. Moschino iPad Air Case
WiFi Direct
WiFi direct (WiFi Direct) also known as WiFi point to point, it allows devices without going through a wireless router and the data transmission. That is even outside this does not have a wireless network using Wi-Fi Dircet function can make two devices over a Wi-Fi connection, also have an advantage in connection distance, even mobile devices to stay connected continuously within a 100 m distance. Speed is even more alarming, the theoretical transfer rate can be up to 250Mbps, is 31MB/seconds. Although the theory with actual speeds vary greatly, but basically, a 1GB file is 3 minutes without problems.
NFC
NFC (Near Field Communication), the Chinese name of near field communication technology, originally developed by Philips and Sony, the two companies together, is a short-range high frequency wireless communication technology that allows two devices point-to-point data transmission. NFC provides a simple, intuitive and quick way of sharing files. And share operation is also very interesting, as long as the two cellphones back-to-back.
Due to the transmission distance of only a few centimeters of the NFC, and point to point the way, so the NFC transport process is fairly safe, security is very high. In addition, the NFC also has a very important advantage is the connection establishment time is very short, less than 0.1 seconds, can basically achieve the touch, while the Bluetooth pairing time for at least 5 seconds. Moschino iPad Air Case
But compared to other modes of transmission, spread of the NFC can be described as slow, only 424kbit/s transfer rate of NFC, NFC is only suitable for transfer business cards and Web site links, and a small amount of data.
Android Beam and s Beam
Although Bluetooth and WiFi Direct transmission speed is faster than NFC to many, but the pairing of Bluetooth and Wifi Direct connections is time consuming and troublesome. So someone came up with relying on NFC to match, and then transmitted via WiFi or Bluetooth to so that you can achieve rapid paired and connected, and to achieve higher transfer speeds. And now we can see Android Beam is relying on NFC to match, and then transfer using Bluetooth. Samsung has a similar function using NFC to pairing, WiFi Direct for transmission.
But Android Beam s Beam must be NFC support, and now cell phones, mobile phones equipped with NFC, not more. Since the Android Beam and s-Beam both the popularity of better transport are not well, the real popularity of NFC must also be a strong company to promote.
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