Shinkuro Honda

A virtual office environment based on a shared room realizing awareness space and transmitting awareness information

‘c’ ,. In t&s paper, we describe a system +at provides a “w&k-at-home” environment based on a &tual shared room built ,on”a 3D graphics w&k

Valentine: an environment for home office worker providing informal communication and personal space

ation. We realize ‘chwareness Space” o,n’ the system to avoid a tradeoff bet\veen’ ‘providing facility of informal comniunication and keeping one’s workSpace from &hers: ,a-ware’ness information. Also, this system provides the feeling of the presence at virtual office by using ‘fAround View? and “Sound Effect”. 1

Multimedia communication networking architecture model for high speed network

In this paper, we propose the virtual ofice environment which integrates the natural communication and the secure private space. The features of this system are described below. 1) This system has virtual shared room which is based on the idea of 9hared Room Metaphor”. 30 graphics on SGI workstation is used-for this system. It uses Ethemet(TCP/IP) for signal connection and FDDI(UDP/IP) for continuous media(i.e., realtimd audio/video streams). 2) This system realizes the field of view of human being to support natural communication between members by using OUT UAround View” technique. 3) Yound Effect” are also used to help users feel the presence of other members. For instance, members hear the opening-sound of the door when someone logs in OUT system and the sound of footsteps when someone is wall&g around OUT viutual room. 4) Sometimes this system avoids unlimited flow of awareness. A person concentrating his/her work may not want to perceive ezcessive awareness of others. To support such situation, we define uAwareness Space” which restn’cts the field where other member5 awareness is transmitted. Awareness Space changes in size with the degree of concentration which is measured through two factors; the movement of a chair and the frequency of keyboard typing. 5) Weadphone Metaphor”; a picture of headphone is attached above his/her image and changed it’s color depending on the degree of concentration. The view of this headphone enables other members to recognize his/her state and it can be a criterion he is available to communicate or not.

Distributed computing architecture for effective management of multimedia streams on DPE

This paper describes and discusses the modeling of multimedia communication networking architecture suitable to high speed networks such as LAN, B-ISDN, etc. for the flexible management and rapid introduction of services. In this model, the applications are deployed in units of software building blocks called group call server, service control server, resource management server and client agent. Each building block provides a layered view for the effective management of the multimedia network resources and services. In this paper, we propose a service scenario scheme and multimedia logical devices model for the flexible generation and effective management of services, and abstracting the network resources, respectively. Finally, this paper presents an architecture evolution model toward interoperability in a distributed processing environment (DPE). This can be applied for interoperability between multimedia network resources provided by different vendors.<<ETX>>

An effective network management architecture for distributed multimedia systems

We study a networking architecture model that is built on a distributed processing environment (DPE) for multimedia services suitable for high speed transport networks such as ATM networks. In this architecture, the applications are deployed as units of software building blocks. Each building block provides a layered view for the effective management and control of the multimedia network resources and services according to the concept of telecommunications management network (TMN) and telecommunications information networking architecture (TINA). For the purpose of flexible service provision to users and effective service introduction by service providers, this architecture proposes the adoption of ad hoc service building blocks such as a video on demand building block and a CSCW building block that have interactions with a general purpose building block. This paper also proposes a naming structure for the management of user profiles and session profiles using a directory service system, and an effective control model for multimedia logical device objects using a stream process approach. The proposed model is implemented on a DPE platform that provides various transparencies, ANSAware.

Friend Park-expression of the wind and the scent on virtual space

The paper presents a networking architecture model for multimedia applications and their flexible management suitable for B-ISDN. In this architecture, the applications are separated by building blocks according to their functionality in a distributed processing environment. This architecture provides a layered view of an effective management of the multimedia network resources and services. Also, we propose a model for managing and controlling multimedia terminal resources. Finally, we discuss interoperability in order to facilitate connections between multimedia network elements.<<ETX>>