fpga_feixiang 发表于 2017-6-30 16:57:14

FC的三种类型都有什么不同

NFC-AThe signalling type NFC-A is based on ISO/IEC 14443A. It is similar to RFID type A. In the type-A based communication delay encoding (miller encoding) technique is employed along with AM modulation. Here binary data is transmitted with the data rate of about 106 Kbps using type A communication. Here binary signal must change from 0 % to 100 % to distinguish between binary 1 and binary 0 data informations.NFC-BThe signalling type NFC-B is based on ISO/IEC 14443B. It is similar to RFID type B. Here manchester encoding technique is employed. Here instead of 100%, AM modulationat 10% is used. This convention is used to distinguish between binary 1 and 0. 10% change from 90% for binay 0 (i.e. low) and 100% for binary 1 ( i.e high) is used.In manchester coding zero cross over happens in the bit period used to represent both 0 and 1. Here a low to high transition represents binary 0 bit and high to low transition represents binary 1 bit. It is recommended to have the zero cross over in the middle of the bit period.NFC-FThe signalling type NFC-F is based on FeliCA JIS X6319-4. It is the faster form of RFID communication. It is alse known as FeliCa. It is the technology most popularly used in Japan. It is used for variety of applications such as creadit card or debit card based payments, subway ticketing for access control to the trains, personal identification at the office and residential flats etc.

4798345 发表于 2017-7-11 10:41:06

感谢撸主分享

hellokity 发表于 2017-7-12 09:57:11

小白看不懂，想请楼主解释下！

fpga_wuhan 发表于 2017-7-12 09:58:31

FC的三种类型都有什么不同

芙蓉王 发表于 2017-7-18 09:35:01

求楼主翻译。。

晓灰灰 发表于 2017-7-18 09:56:51

FC的三种类型都有什么不同

fpga_feixiang 发表于 2024-11-8 14:31:15

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