22536-8

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22536-8, also known as 8.1.2.1.6, are a coding standard for transmission devices, primary intended for the automated reading, identification and analyzing of transponder signals in systems like electronic toll collection, public transportation ticketing, electro-mechanical series, Internet of Things (IoT) and other identity management applications. The coding standard is based on an open protocol architecture with well-defined interfaces to facilitate the communication between transponders and readers.

The field of application of 22536-8 is mainly in various types of contactless transpondidentification systems, of which the most common types are RFID and NFC tags. RFID systems use radiofrequency electromagnetic fields to transfer data from a tag to the reader, while NFC tags are also enabled with contactless communication over a very short range.

The 22536-8 coding standard defines the protocol definitions and formats for the communication protocol between the reader and the transponder. It enables communication with various transponders from different manufacturers within a certain protocol and protocol series. The coding standard defines the rules of communication between the reader and the transponder, specifying the operational communication commands, status messages, accelerations/decelerations, etc. The coding standard defines the signal sequences and the data exchange format for accelerating and decelerating communication.

The working principle of 22536-8 is relatively straightforward. The reader sends a request signal, which is picked up by the transponder. The transponder then sends back an acknowledgment signal to the reader, confirming that it has received the signal. After the reader has received the acknowledgment signal, it will send a command signal, containing information about the desired operations. The transponder then processes the command and, depending on the command parameters, sends back the corresponding information to the reader.

22536-8 also enables the reader to read the data stored in the transponder’s memory. This can be used for various purposes, such as verifying the authenticity of a transaction, storing identifier information, or tracking items over the course of a supply chain. To accomplish this, the reader sends a command signal to the transponder asking it to send back its memory content. The reader then stores the content sent by the transponder, typically in the form of a binary string.

In addition to the communication protocols, 22536-8 also defines the security measures for transmitting and receiving data. These security measures include encryption algorithms, authentication methods, and anti-collision algorithms. Encryption algorithms like AES are used to ensure that the data sent between the reader and the transponder cannot be intercepted or tampered with. Authentication methods help verify the identity and trustworthiness of the parties involved in the communication. In addition, the coding standard also defines anti-collision algorithms, which, as the name suggests, are used to prevent data collisions between the reader and the transponder.

Overall, 22536-8 is an important coding standard for the development of applications related to transponder systems. It enables developers to interoperate between different transponders and readers, and also facilitates the security of the communication. The coding standard provides a comprehensive set of communication protocols and security measures that protect the data that is transmitted between the reader and the transponder.

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