Byungjun Bae

Learn More
Commercial terrestrial digital multimedia broadcasting (T-DMB) service was launched on December 1st, 2005, in the Seoul metropolitan area of the Republic of Korea. As the world’s first commercial terrestrial mobile multimedia broadcasting service, T-DMB garnered huge attention in the field of mobile broadcasting. This paper presents the history, system, and(More)
This paper introduces a novel approach for extending DMB service area by making use of existing IP networks. DMBonIP Gateway, which provides RTP/SDP based internet streaming service by generating media streams in real time from the DMB ensemble received from the air, is introduced for this purpose. This paper addresses key functional components of DMBonIP(More)
This paper analyzes delays and resource efficiency when DASH segment files are transmitted through IP-based next-generation broadcasting systems such as ATSC 3.0. DASH segment files are designed to support media content of various qualities in the DASH system. The size of a DASH segment file can vary even though they may have the same quality and playback(More)
T-DMB (Digital Multimedia Broadcasting) is a terrestrial mobile multimedia broadcasting system recently developed in Korea based on the European Eureka-147 DAB (Digital Audio Broadcasting) [1]. Besides audio / video broadcasting services, it is also possible to provide various useful data broadcasting services, such as real-time news, traffic information(More)
Next-generation digital broadcasting system transmits the DASH segment files. Delays and inefficient use of resources are the major challenges in the transmission of DASH segment files in broadcasting systems. Because the size of DASH segment files varies even though the files have the same quality, and broadcasting systems uses the fixed resource. Delay is(More)
This paper introduces the development of the remultiplexer which multiplexes MPEG-4 stream into the digital multimedia broadcasting transmission signal. The remultiplexer also has the additional channel coding functions which are essential for mobile reception of moving pictures through the digital multimedia broadcasting signal.
In this paper, we propose a design of a gateway to provide multimedia services based on the cloud transmission (Cloud Txn) system. The proposed design to support multi-layered transmission in the Cloud Txn system is described, as well as functionalities as a gateway. Also, the test implementation based on the DVB-T2 is presented to show the current progress(More)