The real-time operation server model of the digital signage system for a lift based on Web Socket

Transcription

1 Volume 118 No , ISSN: (printed version); ISSN: (on-line version) url: ijpam.eu The real-time operation server model of the digital signage system for a lift based on Web Socket SoonGohn Kim 1, Seok-Gyu Park 2 and Woon-Yong Kim 3 1 Dept. of Computer and Game Science, Joongbu University, 101 Daehakro, Chubu-Meon, GumsanGun, Chungnam, Korea sgkim@joongbu.ac.kr 2 3 Dept. of Computer & Internet Technique, Gangwon State University, 115 Gyohang-ro, Jumunjin-eup, Gangneung-shi, Gangwon-do, Korea skpark@gw.ac.kr, wykim@gw.ac.kr February 13, 2018 Abstract Background/Objectives: Digital Signage market is increasingly expanding into more diverse areas such as way finding, place making, exhibitions, public installations, marketing so on. Therefore, the efficient management and operating models that support the needs of the environment is required in the Digital Signage market. Methods/Statistical analysis: We propose a Websocket based service model that can operate efficiently manage the digital signage system specifically for the lift environment. Through real-time monitoring and operation using a web sockets, the system management display devices constantly and it provide the reliable and effective approach for a four function such as schedule, user, device and content management including the streaming service

2 Findings: We build the environment of connectionoriented real time monitoring system based on web socket. And we define the real-time service protocol for a lift. Based on this, we propose an efficient operation model to manage contents and lift information. In addition, we implement the web-socket based operation server. this server provide the reliable and effective approach for a digital signage four function such as schedule, user, device and content management. By including a variety of services structure considering the lift properties, we will be able to define a specific service model for the digital signage of the lift. Improvements/Applications: In the future, the proposed digital signage operation server for a lift will be able to expanded in consideration of the characteristics of the convergence model and service information to various industries fields. Key Words : Lift Service, Digital Signage, Web Socket, Operating Model, Web Service. 1 Introduction A digital signage market has continued to grow with the development of IT technology. And it is also operated in a variety of approaches in a variety of fields such as way finding, place making, exhibitions, public installations, marking and outdoor 1. In addition, in the process of the advanced lift, the display of lift information using display device and advertising service have constantly expanded in the lift industry 2. However, such digital signage has mainly been developed by focusing on how to express the information in the display device; it is a lack of measures of the effective management for the devices and contents. In this paper, we propose a web-based service management models capable of operating the service in the digital signage specialized in the elevator. In particular, the display device is contained inside the lift without human intervention and has to service a variety of contents continuously. So it need to the effective model to control distribution and operation to the devices. To do this, we build the environment of connection-oriented real time monitoring system based on web socket, based on this; we propose an efficient operation model to

3 manage contents and lift information. In addition, by including a variety of services structure considering the lift properties, we will be able to define a specific service model for the digital signage of the lift. The remaining parts of the paper are organized as follows, In Section 2, we discuss the related technology for the digital signage service. In Section 3, we propose the operation model of the digital signage for the lift. Section 4 presents the implementation model of the system. And last, Section 5 concludes this paper. 2 Literature review 2.1 The service technique of the digital signage Digital signage technique is being used in various industries. It is utilized mainly in the areas for advertising with the existing information system for end users and also has been extended to a model in combination with a user interaction 3. And also, the methods of information representation have a various forms such as text, images, animation, video and streaming services. And it has been utilized in various fields 4,5. Out-of home advertising show the technique to display video content, advertisements and message to specific locations and consumers at specific times 1. And in the digital signage screen area, various studies using 3D technique have been conducted such as holographic display and water screens etc., 6,7. And a lift also has been a change in a structure that utilized the display devices for a call service and information representation. To cope with these changes, the system is required more effective information transfer, and management techniques. 2.2 The protocol of Web Socket Web Sockets is an advanced technology that makes it possible to open an interactive communication session between the browser and a server with some API. And we can send messages to a server and receive event-driven responses without having to poll the server for a reply based on real-time. The Web Sockets is a bidirectional communication technology for web applications which operates over a single socket. And The Web Socket protocol was designed to work

4 well with the existing Web infrastructure. The protocol specification defines that the Web Socket connection starts its life as an HTTP connection, guaranteeing full backwards compatibility with the pre-web Socket world. The protocol switch from HTTP to Web Socket is referred to as the Web Socket handshake. The Web Socket protocol works in two phases named handshake and data transfer. First, the opening handshake phase is a unique HTTP request/response between the one who initiate the connection client and the server. This HTTP exchange is specific because it uses the concept of Upgrade, defined in the HTTP specification. Once the handshake is approved, the use of Web Socket protocol is established. There is an open connection on the server side as well on the client side; callback handlers are called to initiate the communication. And last, closing handshake phase can be initiated by both peers. A peer that wants to close the communication need to send a close control frame and it will receive a close control frame too as a response. Fig. 1 shows the work flow of the Web socket protocol 8,9. Figure 1: The work flows of the Web Socket protocol

5 3 Real-Time Digital Signage Operation Model for the Lift 3.1 The Architecture of the real-time digital signage service for the Lift based on Web Socket The lift system operated with a unique identifier to manage the lift state. So it needs to manage the groups of devices effectively. In addition, with this group management, the system has to be provided the effective monitoring and content services for the various devices in the lift. Figure 2 shows the web-based digital signage operation architecture for these characteristics in the lift. Figure 2: The architecture of the real-time digital signage system based on the Web Socket The Lift system is represented by the elements in the Group, each system may have some devices for providing digital information. Web-based management server for the digital signage monitors and provides services based on web socket communication environment. It may also provide a variety of service environment through the smart phone or web client

6 3.2 The Design Model of the digital signage operation server for the Lift based on Web Socket To design a digital signage server operating model for the lift, we configure the operating model as shown in Figure 3. Figure 3: The structure of the digital signage operation server model based on the Web Socket Web-Socket based digital signage operation server provide a various management modules such as company management, device management, schedule management, content management, user management, streaming service management using a database system and web socket. Each management module is associated with the web socket management class to handle the real-time status information monitoring and content management. Contents provided in the system include videos, images, web pages, news, emergency messages and streaming services so on. The main classes structure for web socket-based real-time operation is shown in Figure

7 Figure 4: The structure diagram of main classes for web socketbased real time digital signage The classes in the structure are composed web socket classes related with contents, user and device management connected with DsDBControl class. Also it includes a DsEndpoint web socket class responsible for the real-time control between the display devices and the server. The system manages the group included in the company, the lift in the group and the devices in the lift based on a lift unique identifier. 3.3 The operating flows of the real-time digital signage operation server system for the lift Real-time management of the device has a critical factor for flow control because it is necessary to control the flow of real-time in the digital signage platform. To support this, there is a need for effective management of devices connected and disconnected and the connection status monitoring. Flow for this process is presented in Figure 5,6,

8 Figure 5: The flow of the connection for real-time digital signage device Device is always to stay connected. For this purpose, it is necessary to check the communications situation of the socket of each device periodically and recognizes the problem situation. When the connection ended with an exception occurs, the system passes status information to the server and tries to reconnect to keep the device connected continuously. Figure 6: The flow of the disconnection for real-time digital signage device

9 Figure 7: The flow of the monitoring for real-time digital signage device alive Disconnecting device occurs on the device end state and passes the exit status information to the server through a web socket. And also, monitoring device is periodically accomplished by providing survival information to the server. In the monitoring process, when the system occurs abnormal termination the system should always stay connected to attempt to reconnect. Web socket based realtime monitoring is accurately recognize the status information and will be able to effectively deal with the digital signage and lift status information. 4 The Digital Signage Operation Server Implementation Model for the Lift We implemented a real-time monitoring operation server model that is the lift-specific digital signage based on Tomcat server defined in Section 3. And also we defined the schema as shown in Figure 8 to manage various contents and lift information using MySQL

10 Figure 8: The database schema of the web socket-based real time digital signage for the lift Based on the above information, we implement such a system in Figure 9 to establish the operating environment for real-time monitoring and provide efficient management from the user s point of view. This system provides monitoring for a company, group, lift, and devices and at the same time can manage contents and schedule data for the devices so that the system could provide the various services to operate remote device effectively

11 Figure 9: The user interface of the digital signage operation server model in the lift 5 Conclusion Lift industry is making progress in advanced courses in combination with the Information technology. In this growth process, the digital signage for the lift has the purpose of providing the lift information and a variety of contents to the end users using display devices. To provide these requirements effectively, the system requires the efficient management of the operating device and a variety of contents and schedules. In this paper, we presented a web socket based real-time digital signage operation server model for the lift to reflect this demand. For this, we built the environment of connection-oriented real time monitoring system based on web socket. And we defined the real-time service protocol for a lift. Based on this, we proposed an efficient operation model to manage contents and lift information. In addition, we implemented the web-socket based operation server. this server provide the reliable

12 and effective approach for a digital signage four function such as schedule, user, device and content management. The system provide a web socket-based real-time monitoring environment for the device monitoring and contents service and will be able to provide a more efficient resource management and services through efficient scheduling and control of various contents. References [1] J. V. Harrison and A. Andrusiewicz. The digital signage exchange: a virtual marketplace for out-of-home digital advertising. Proceedings 4th ACM Conference on Electronic Commerce June. [2] J. Jang. Elevators of the latest technology trends. The korea society of elevator engineering December. [3] J. Schaeffler. Digital Signage - Software, Networks, Advertising, and Displays, a Primer for Understanding the Business. NAB Broadcasters [4] Q. Chen, F. Malric, Y. Zhang, M. Abid, A. Cordeiro, E. M. Petriu and N. D. Georganas. Interacting with Digital Signage Using Hand Gestures. Image Analysis and Recognition Lecture Notes in Computer Science. 2009, vol. 5627, pp [5] Euiseok Nahm. Implementation of Context-aware Digital Signage System based on Mobile CPU Platform. Indian Journal of Science & Technology July, Vol. 8, Issue 14 [6] Researchers develop a 360-degree holographic display. Date accessed: 05/07/2016. [7] Fog screen, projecting images in the air. Date accessed: 10/07/2016. [8] Pimentel, Victoria, and Bradford G. Nickerson. Communicating and displaying real-time data with WebSocket. Internet Computing, IEEE

13 [9] J. John Livingston, A. Umamakeswari. Internet of Things Application using IP-enabled Sensor Node and Web Server. Indian Journal of Science & Technology. May 2015, Vol. 8, Issue

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