ESG/EPG (5) - Layer for ESG Representation

ESG Layer for ESG Representation

1). ESG Representation: Overview

§ Fragmentation: Partitioning the ESG Instance into ESG XML Fragments.

§ support fragmentation of the ESG Instance into ESG XML Fragments and

§ allow an efficient representation of the ESG XML Fragments which minimizes the size of the metadata delivered to users.

§ The partitioning of the ESG Instance into fragments for transportation is supported to enable separately updating parts of ESG data and for performance optimization

2). ESG Representation: ESG Fragments may be represented in three ways.

§ Firstly, ESG Fragments may be uncompressed,

§ secondly, ESG Fragments may be compressed with GZIP (RFC 1952), and

§ thirdly, ESG Fragments may be compressed with BiM specified in ISO/IEC 15938-1 as adopted by DVB-GBS

3). Processing of ESG XML Representation

§ Decoder behavior with XML Encoding

§ Decoder behavior with BiM Encoding

4). ESG Init Message:

§ The ESG Init Message serves the purpose to initialize the reception of the ESG.

§ For this purpose, it signals the representation of the ESG, the presence of an index and the Decoder nit.

§ The ESG Init Message is transported in the ESG Init Container in the ESG FLUTE session in the Single Stream mode or in the FLUTE Session of the Announcement Carousel in the Multiple Stream mode.