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data compression protocol (DCP)

The Data Compression Protocol(DCP) is a protocol used to transmit compressed user data and control primitives. It supports optional and proprietary compression functions and is divided into two sublayers: the DCP Control Sublayer and the DCP Function Sublayer.

The DCP Control Sublayer supports the encapsulation of decoded user data and negotiates the primitives within the DCP Protocol Data Units ( DCP PDU) for transport between peers. Furthermore, it provides for configuration options such as the DCP data formats and procedures and defines the DCP algorithms and parameters. Synchronization between sender and receiver peers is also one of the functions of the DCP Control Sublayer, as is the detection of non-existent synchronization and re-synchronization between the peers.

The DCP Function Sublayer decodes the encoded user data into compressed user data and decompresses the compressed data according to the public or proprietary algorithms. Each DCP Function Sublayer is defined by a separate document, which also ensures interoperability between DCP functions from different vendors.

The Data Compression Protocol frame consists of a one- byte header and a DCP payload in which the data defined in the DCP Function Sublayer is transmitted.

Informations:
Englisch: data compression protocol - DCP
Updated at: 03.08.2011
#Words: 185
Links: digital cinema package (D-Cinema) (DCP), protocol, user, data, compression
Translations: DE
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