• Journal of Korea Society of Digital Industry and Information Management
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• v.8 no.2
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• pp.117-130
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• 2012

Due to the development of network and device, it is called mobile age that boosts various distribution routes of multi-media content and it constructs a new digital content consumption trend. N-screen is one of the new-introduced examples in the digital age and broadcasting industry believes it as a crisis and challenge as well. It becomes a ubiquitous multi-media environment that people watch multi-media content everywhere and any time they want to and competition happens beyond the boundaries such as network industry, terminal industry, pay TV market, traditional terrestrial TV, etc. And then how should the broadcasting service prepare for the N-screen business? The present research proposes a few terrestial broadcasting content strategies in the multi platform environment. First, instead of N-screen, it proposes multi platform, especially One Source Multi Platform(OSMP). Second, so-called 'Integrated Terrestrial Broadcasting OSMP Alliance(IBPA)' must be founded. Third, IBPA should support multi-tasking UX for viewers to have rich experience. Last, it becomes more important and necessary to support local terrestrial broadcasting service for public service in the multi platform age.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.1
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• pp.189-193
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• 2014

SNS (Social Network Service) has evolved to life-friendly service with the combination of local services. Unlike exsiting mobile services, life-friendly service is expected to be personalized with gathering of local information, location information and social network service information. In the process of gathering various kinds of information, Big-data technology and Cloud technology is needed. The effective algorithem has researched for this already, however the privacy protection model hasn't researched enough in life-friendly service or big-data using circumstance. In this paper, the privacy issue is dealt with in terms of 'Structure hole', and the privacy issue comes from big-data technology of life-friendly service.

• Journal of the Korea Convergence Society
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• v.11 no.8
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• pp.47-53
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• 2020

In the case of a failure due to equipment deterioration in the public address system or a worker's mistake during construction, broadcasting becomes impossible. In this situation, we have designed a more advanced management broadcast system that can broadcast. The broadcasting service is operated using main broadcasting device, and local broadcasting device operates separately only in the local area. If the main broadcasting device becomes inoperable, the procedure for transferring the control activates the device with the local broadcasting devices based on data backed up by the main controller. This paper proposes an improved method of the conventional emergency broadcasting device duplication method. The existing method could not use the standby equipment in the normal state, but in the proposed method, the standby equipment can be used as local broadcasting equipment in usually. This method enables stable system operation while minimizing resource waste due to redundant configuration of expensive devices.

• The Journal of the Korea Contents Association
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• v.13 no.8
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• pp.20-27
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• 2013

In this paper, we propose a system for an emergency alert broadcasting service that broadcast residents prompt alarms immediately after the disaster occurs in the private sector. The proposed system consists of a contents streamer, n contents distributor, and m television controller under the assumption that the public broadcasting system and the local area network have been already installed. Also, the goal of the system is to forcibly broadcast disaster information to the residents by streaming contents for alerts on their TV. The proposed system in this paper can be utilized in sharing of emergency information in the area as quickly as possible and various information of the area.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.11 no.3
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• pp.123-126
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• 2011

As the number of users of smart phone and smart pad are increasing, the deployment of WiFi APs has been accelerated. Also Internet local broadcasting service will be activated near future. But transmission error is the critical problem, due to the one-way transmission of the data to the receivers. In this paper, FER is analysed according to BER and frame length, and repetitive transmission technique is proposed to reduce the effective FER.

• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.369-370
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• 2008

The DMB standards allow to transmit IP data on IP Tunneling. It is able to DMB data localcasting services using technologies as assigning IP address, encapsulating IP packets, guiding IP data service and, exchanging IP packet at the local area. As the result of that, we can have good experiences as rich and localized multimedia on the DMB networks.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.6
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• pp.145-149
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• 2018

This paper introduces a method of sending and registering SMS using mobile LBS (Local Based Service) in social network service environment. This method acquires the location of the target person and object through the API and LBS, constructs the SMS based on the obtained information, and transmits and registers the SMS in the mobile environment. The composition of the SMS is the personal information of the object to be searched, the current position and the position of the object. Therefore, the user can quickly and accurately grasp the brief items and locations of objects to be searched through SMS. Also, Today we will improve the quality of life by providing upgraded service for shortening of appointment time and delivery.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.6 no.3
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• pp.919-940
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• 2012

Video on Demand (VOD) is a multimedia service which allows a remote user to select and then view video at his convenience at any time he wants, which makes the VOD become an important technology for many applications. Numerous periodic VOD broadcasting protocols have been proposed to support a large number of receivers. Broadcasting is an efficient transmission scheme to provide on-demand service for very popular movies. This paper proposes a new broadcasting scheme called Popularity Cushion Staggered Broadcasting (PCSB). The proposed scheme improves the Periodic Broadcasting (PB) protocols in the latest mobile VOD system, which is called MobiVoD system. It also, reduces the maximum waiting time of the mobile node, by partitioning the $1^{st}$ segment of the whole video and storing it in the Local Media Forwarder (LMF) exactly in the Pool of RAM (PoR), and then transmitting them when the mobile nodes miss the $1^{st}$ broadcasted segment. The results show that the PCSB is more efficient and better than the all types of broadcasting and caching techniques in the MobiVoD system. Furthermore, these results exhibits that system performance is stable under high dynamics of the system and the viewer's waiting time are less than the previous system.

• Journal of Broadcast Engineering
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• v.16 no.2
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• pp.350-359
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• 2011

Fast developments of broadcasting technologies since 1990s enabled not only High Definition Television service providing high quality audiovisual contents at home but also mobile broadcasting service providing audiovisual contents to high speed moving vehicle. Terrestrial Digital Multimedia Broadcasting (T-DMB) is one of the technologies developed for mobile broadcasting service, which has been successfully commercialized. One of the major technical breakthroughs achieved by T-DMB in addition to robust vehicular reception is an adoption of framework based on MPEG-4 System. It naturally enables integrated interactive data services by using Binary Format for Scene (BIFS) technology for scene description and representation of graphics object and Object Descriptor Framework representing multimedia service components as objects. T-DMB interactive data service has two fundamental limitations. Firstly, graphic data for interactive service should be always overlaid on top of a video not to be rendered out of it. Secondly, data for interactive service is only received by broadcasting channel. These limitations were considered as general in broadcasting systems. However, they are being considered as hard limitations for personalized data services using location information and user characteristics which are becoming widely used for data services of smart devices in these days. In this paper, the architecture of T-DMB hybrid data service is proposed which is utilizing broadcasting network, wireless internet and local storage for delivering BIFS data to overcome these limitations. This paper also presents hybrid BIFS technology to implement T-DMB hybrid data service while maintaining backward compatibility with legacy T-DMB players.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.9 no.6
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• pp.125-134
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• 2009

Ubiquitous are not courted in time and place of users and must offer service in network freely. There is telematics by representative application service during it. telematics service must provide service that is personalized according to time and place. Also, user who use telematics service must offer service that can use automatically even if do not request service. Therefore, in the paper wish to embody service discovery way design in telematics environment because treatise that see uses UPnP through PDA that is user Mobile terminal. PDA connected by local server of telematics service point and Bluetooth communication, and use finding UPnP device and service that is linked with local server using UPnP. Design UPnP device that provide service to user in telematics environment. Construct telematics service test bed to test service discovery. Because constructed system applies UPnP on Bluetooth communication base, service discovery system implementation and test.