Yung-Chi Wang

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— This paper proposes iPTT, a peer-to-peer Push-to-Talk (PTT) service for Voice over IP (VoIP). In iPTT, a distributed and mobile-operator independent network architecture is presented to accelerate the deployment of the PTT service. Based on the proposed architecture, the message flows for call establishment/teardown are designed to show the feasibility of(More)
A novel model namely Extended Real-Time Synchronization Model (E-RTSM) for modeling SMIL2.0 synchronization behaviors is proposed in this paper. E-RTSM deals with schedule-based synchronization as well a s event-based synchronization in SMIL2.0. Converting of the temporal relationship of a SMIL2.0 document to E-RTSM is presented. Moreover, design of the(More)
In this paper, we deal with supporting of the VCR-like operations such as fast forward/backward and sliding for SMIL2.0 presentations. Mechanisms for supporting VCR-like operations for a SMIL2.0 player are proposed. Normal play mode for a SMIL2.0 presentation is based on Extended Real-Time Synchronization Model (E-RTSM) that provides a convenient way to(More)
Dividable Dynamic Timeline (DDTL) was proposed in our previous work to address the non-deterministic temporal behavior in SMIL2.0 scripts. This paper presents the mechanisms for the reuse of SMIL2.0 scripts in authoring a new presentation. To reuse a SMIL2.0 script, the script must be converted to elements in DDTL. By the reuse of existing SMIL2.0 scripts(More)
Timeline-based editing provides nonprofessional users an intuitive and friendly way for multimedia authoring, but the schedule-based and deterministic property of timeline results in the lack of the ability for supporting non-deterministic temporal behavior, which is one of the key features of SMIL2.0. This paper presents our elaborate effort of supporting(More)
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