论坛技术规范 第2部分：NFC数据交换格式

[中文适用范围]： IEC 62652-2:2026 是近场通信论坛（NFC Forum）设备通用的数据格式，即NFC数据交换格式（NDEF）规范。NFC数据交换格式规范定义了NDEF数据结构的格式，以及构建有效NDEF消息的规则，NDEF消息是一个有序且连续的NDEF记录集合。此外，它还定义了用于指定封装在NDEF记录中的应用程序数据类型的机制。NDEF规范仅定义了以兼容方式交换特定应用或服务数据的数据结构格式，并不详细定义任何NDEF记录类型，NDEF记录类型由其他规范定义。此NDEF规范假设底层协议是可靠的，因此本规范未规定两个NFC论坛设备之间的数据交换。NFC论坛设备可以独立于接收到NDEF消息的方式处理NDEF信息。由于已有大量消息封装格式、记录标记协议和多路复用协议，最好明确说明NDEF的设计目标，特别是NDEF范围之外的内容。 [外文原描述]： IEC 62652-2:2026, the NFC Data Exchange Format (NDEF) specification, is a common data format for NFC Forum Devices. The NFC Data Exchange Format specification defines the NDEF data structure format as well as rules to construct a valid NDEF Message as an ordered and unbroken collection of NDEF Records. Furthermore, it defines the mechanism for specifying the types of application data encapsulated in NDEF Records. The NDEF specification defines only the data structure format to exchange application or service specific data in an interoperable way, and it does not define any NDEF Record Types in detail - NDEF Record Types are defined in separate specifications. This NDEF specification assumes a reliable underlying protocol and therefore this specification does not specify the data exchange between two NFC Forum Devices. An NFC Forum Device can process the NDEF information independently of the way it has received the NDEF Message. Because of the large number of existing message encapsulation formats, record marking protocols, and multiplexing protocols, it is best to be explicit about the design goals of NDEF and, in particular, about what is outside the scope of NDEF.