The origin of NFC technology has to start from 2003. At the time, Philips and Sony planned to develop a compatible wireless communication technology based on contactless card technology. Therefore, Philips sent a team to Japan and Sony engineers to retreat to develop this technology. In three months, the two companies jointly released research and development results, a wireless communication technology compatible with the current ISO14443 contactless card protocol, and named NFC (Near Field CommunicaTIon).
In order to promote the development and popularization of NFC, in 2004, Philips, Sony and Nokia jointly created a non-profit industry association, NFC Forum, to promote the implementation and standardization of NFC technology and ensure the cooperation between equipment and services. . NFC Forum has hundreds of members around the world, including: NOKIA, SONY, Philips, LG, Motorola, NXP, NEC, Samsung, Atoam, Intel, among which Chinese members have Meizu, BBK, vivo, OPPO, Xiaomi, China Mobile, Huawei , ZTE, Shanghai Tongyao and Taiwan Zhenglong and other companies.
What is NFC?NFC (Near Field CommunicaTIon) near field communication technology, also known as short-range wireless communication, is a short-range high-frequency wireless communication technology that allows non-contact point-to-point data transmission (within ten centimeters) to exchange data between electronic devices. . This technology evolved from contactless radio frequency identification (RFID) and is backward compatible with RFID.
NFC principle and characteristicsLike RFID, NFC information is also transmitted by electromagnetic induction coupling of the radio frequency portion of the spectrum. NFC exchanges data between the devices through non-contact point-to-point data transmission (within ten centimeters). This mode is similar to infrared, and can be used for data exchange, but the transmission distance is short, the transmission creation speed is faster, the transmission speed is faster, and the power consumption is low.
NFC is very similar to Bluetooth, and is a short-range communication technology that is integrated into mobile phones. But NFC does not require complicated setup procedures. Therefore, NFC can also simplify the Bluetooth function. But its speed is not as good as Bluetooth. The maximum data transfer capacity of NFC is 424 kbit/s, which is much smaller than Bluetooth V2.1 (2.1 Mbit/s).
The difference between NFC and RFIDFirst of all, NFC is a wireless connection technology that provides easy, secure and fast communication. Its transmission range is smaller than that of RFID. The transmission range of RFID can reach several meters or even tens of meters, but because NFC adopts unique signal attenuation technology, Compared with RFID, NFC has the characteristics of close distance, high bandwidth and low energy consumption. Second, NFC is compatible with existing contactless smart card technology and has become the official standard supported by more and more major vendors. Once again, NFC is a close-range connection protocol that provides easy, secure, fast, and automatic communication between devices. Compared to other connections in the wireless world, NFC is a close-range, private communication method. Finally, RFID is more widely used in production, logistics, tracking, and asset management, while NFC plays a huge role in access control, public transportation, and mobile payment.
NFC, infrared and Bluetooth are both non-contact transmission methods. They have different technical characteristics and can be used for various purposes. The technology itself has no advantages and disadvantages.
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