Open AccessAn Efficient and Flexible Hybrid Conditional Access System for Advanced T‐DMB
Author(s) -
Bae Byungjun,
Song YunJeong,
Lee SooIn,
Seo HyungYoon,
Kim JongDeok
Publication year - 2011
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.11.0210.0320
Subject(s) - digital multimedia broadcasting , computer science , broadcasting (networking) , architecture , computer architecture , computer network , channel (broadcasting) , transmission (telecommunications) , digital audio broadcasting , telecommunications , geography , archaeology
This letter presents a hybrid conditional access system (CAS) for advanced terrestrial digital multimedia broadcasting (AT‐DMB). The proposed architecture is characterized by its use of a unified CAS channel and various communication networks for CAS message transmissions. We implement a prototype CAS based on the hybrid architecture, which improves the CAS message transmission efficiency greatly compared to the existing T‐DMB CAS standard and supports various AT‐DMB interlayer services more easily and efficiently.