Kazuhiro Mishima

Digital signage systems that include some computer devices are widely used for displaying some dynamic information, unlike wall ads that are unchanged for a certain period. At the replacement time of our university's digital signage system, we need to implement cost effective digital signage system. Therefore, we developed a brand-new style of the digital signage system using low-cost information device. In this demonstration, we introduce two prototype systems, 1) the signage display device, and 2) the central digital signage management system, which is now in implementing.

In this paper, we describe a new design of an automated remote lecture system in Japanese national 18 universities. Our current high-definition automated remote lecture system that was constructed in 2009 has many life-expired hardware. Thus we design a new remote lecture system for replace current system. In our design, new system controls room equipment automatically by reservation, connects rooms and mobile environment seamlessly. The designed system is expected to build actually with the goal of full-scale operations in 2016.

In Tokyo University of Agriculture and Technology, by the part of the information strategy, we promote to abolish the conventional computer room, and make the user to bring the user's own computer (BYOD: Bring Your Own Device). The trend of this BYOD is expanding progressively in other universities in Japan. The type of user's device is wide variety, its usability, is too. In this situation, it increases the cost of teacher due to the difference of the operation. To reduce this cost, we propose our brand new designed computer environment, TUAT Virtual Computer Classroom (TUAT-VCCr). TUAT-VCCr is based on virtual desktop technology, and each user can use the TUAT-VCCr by accessing to the remote desktop, which can be accessed from everywhere in our campus. TUAT-VCCr can be used through an HTML5-compliant web browser (e.g. Google Chrome, Mozilla Firefox), instead of the dedicated client in a conventional VDI or remote desktop environment. This enables the use from a variety of access device that are independent of the device type of the user (e.g. Windows, Mac, Linux, or Chrome). As a result of this, convenience for the user is significantly improved. We present the detail of the design and structure of TUAT-VCCr architecture. We also provide a TUAT-VCCr reservation system, which can adopt the class schedule in order to manage the number of the virtual desktops for class and self-study use efficiently. We also present the detail of this reservation system.

近年多くの業務用アプリケーションで Microsoft Windows 上等で動作するネイティブアプリケーションから，Web ブラウザ上で動作する Web アプリケーションへの移行が進んでいる．一方で IC カードの普及が進み，多くの場所で利用されるようになってきた．IC カードをこれら業務用アプリケーションで利用するためには，IC カードリーダ・ライタのデバイスドライバの対応等が必要で，アプリケーション自体もその入力に対応する必要があった．このため IC カード対応のために改修が必要であるなどコスト増の問題となっていた．本稿では，IC カードリーダをキーボード入力型とすることにより Web アプリケーションで利用しやすいようにするシステムの提案を行い，プロトタイピングと課題について述べる．

本稿では，小型かつ低価格な情報デバイスを利用したデジタルサイネージシステムの可能性について検討するため，その表示システムのプロトタイプ実装を行い，学内に展開した事例について詳説する．東京農工大学では，電力見える化等の取り組みを積極的に行っており，この一部として電力量等をデジタルサイネージとして表示するシステムが稼働している．近年，システムの老朽化と搭載 OS のサポート期限の兼ね合いから，システムの更新を必要とする段階となり，表示端末をより低コストに構築できる手段について検討を行った．加えて，学内施設での教育研究紹介ビデオの表示を行うシステム構築に関する依頼もあり，いずれの表示も可能とする表示デバイスを Raspberry Pi にて試作する取り組みを実施した．本システムにより，表示デバイスとしては必要となる周辺部品を含めて 1 万円を切るデジタルサイネージシステムの実現を目指している．本稿では，この取り組みの概要，Raspberry Pi を利用したプロトタイプの詳細，パフォーマンスを要するコンテンツ表示に利用するサポートサーバの詳細，実際に運用を行った取り組み詳細とその課題についてまとめる．This manuscript is describing a prototype implementation of a Digital Signage System using Small-size and Low-price Information Device. Implementation detail and use-case in our university are also describing. Our university was constructing and operating the electric power visualization system for few years. Nowadays, we need to renew the visualization system by hardware issues and OS support issues. And, we also need to construct a signage system, which plays some video content. For these reasons, we constructed the "cost-effective" digital signage system using Raspberry Pi (as single board computer). By using this system, very low cost digital signage system can be achieved.

This manuscript is describing a Portable Teleconferencing System using Portable Managed Wi-Fi System. We introduced a "Portable Managed Wi-Fi System", using a portable WiMAX consumer router, as a part of our academic information system. From April 2013, this system is running as part of an academic wireless LAN system for students and faculty members. In this manuscript, we introduce a prototype "Portable Teleconferencing System" as a use case of "Portable Managed Wi-Fi system". In our university, each faculty, departments, etc. are dispersed in Aoyama campus and Sagamihara campus. For this reason, we are often held a remote meeting with a teleconferencing system that was introduced as part of the administrative system, such as there are participants from both campuses. However, the network used in these systems requires the Wired LAN network environment, the dedicated room which is installed a teleconferencing system, and the dedicated VLAN network. For this reason, there are situations it is not able to use the dedicated room with the teleconferencing system, even if the remote meeting is needed. Therefore, in order to overcome this situation, we designed and implemented a Prototype Teleconferencing System, regardless of the particular room and a Wired LAN network environment. This system uses our "Portable Managed Wi-Fi System" and "Teleconferencing System". It becomes possible by the implementation of this system, providing more flexible teleconferencing infrastructure.

This manuscript is describing a portable managed Wi-Fi system, which is implemented in 2013 system replacement time. Wireless and Wired LAN infrastructure is provided as existing facilities at Aoyama Gakuin University. However, we have some buildings without Wired LAN equipment required to install fixed wireless access point. Even in this situation, end-user's demand for the Wireless LAN infrastructure is increasing in recent years. This results in dilemma between infrastructure cost and providing a flexible network environment. Therefore, we investigated providing portable Wi-Fi system using portable router which is using WiMAX as WAN line. In addition, the Wireless LAN system which provides the university information system, the access point management functions for logging the utilization status of the network and user authentication function is also an important factor. In the system, we have also considered these: 1) Access point can be used anywhere on campus, 2) It is possible to perform appropriate user authentication and 3) Usage of Wireless LAN system can know while being portable Wi-Fi system. The system is providing to the user as a rental system on both Aoyama and Sagamihara campus. It becomes possible by the implementation of this system, providing more flexible Wireless LAN infrastructure.

End-users who want to receive real-time streaming data on the Internet must first obtain the session information. A session information distribution system that distributes the available session information to all potential receivers must be scalable and work with low latency. We present the design and implementation of a session information distribution system using multiple session agents. This system distributes the session information to the Internet users effectively, and can limit information distribution to specified users by labeling.We evaluated the actual implementation on the PlanetLab and OpenDHT to measure the session information distribution delay and retrieval time. The experimental results have shown that the session agent can distribute session information to the entire Internet with good scalability and end-users can retrieve the information with low latency. © 2008 IEEE.