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Digital signage is a form of electronic display that shows information, advertising, messages, and TV programs in both public and private environments, including retail stores, hotels, and stations. We introduce another application of digital signage using smart devices. Unlike an existing digital signage displayed at a fixed location, the proposed digital signage system can see in anytime and anywhere...
The digital signage system is mainly installed on outdoor and used to convey an ad or information. Outdoor digital signage is used mainly LED, however, it has a lot of discomfort because of low resolution. So we developed the ultra-high resolution digital signage for 4K (UHD). The developed 4K digital signage system is composed of two parts. One is the production system that controls the client system...
Digital signage has been evolving from the simple and one-way advertisement means to the smart and multi-way information services including user interaction and context awareness. In addition, the high speed network has enabled to deliver high resolution contents, such 4K and 8K. In this paper, we have designed the digital signage system that supports a high resolution contents on multiple display...
A forward imaging radar (FIR) detecting obstacles from the ground needs 2-D imaging methods for an unmanned ground vehicle (UGV). Although a back-projection method is the most suitable algorithm, its processing time is too slow to make 2D image in real time. To make a fast imaging algorithm such as frequency domain algorithm, the proposed algorithm uses the scaling factor of that algorithm. This paper...
In this paper, we propose a fingerprinting algorithm that is robust to collusion attacks and can trace colluders. To do this, we design the structure of the fingerprinting code and fingerprinting technique based on a watermarking scheme that uses a 'base watermark set', which composes the information to be embedded. In addition, we propose the structure that colluder trace system can use various fingerprinting...
DRM(digital rights management) is a tool for protecting copyrights and managing the rights of usage. Many DRM technology have been developed, which cause inconvenience for user in the usage of the content. DRM's standardizations have been proceeding for interoperability between different DRMs therefore. EXIM developed by Korea recently proposed the method for the interoperability of download contents,...
In this paper, we propose the method of the integration between the DRM (digital rights management) system for the safe distribution of digital content and the fingerprinting system for the trace of the illegal distributor. DRM system is responsible for the safe distribution of the content, however, when an illegal distribution is happened, it can't trace the illegal distributor of the content. So...
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