this paper takes both a look back and a look forward to describe research directions for this important multimedia application area.

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. A codesign approach for complex video compression systems is presented. The system is based on a flexible and programmable VLIW (Very Long Instruction Word) architecture. The design approach can be subdivided into two phases: a quantitative analysis for deriving the main processor structure and a cosynthesis for generating the processor hardware and the compiler back-end. The analysis results of different video compression algorithms are summarized. This permits to adapt the processor to a set of related applications rather than to a particular task. A compiled instruction-set simulator for analyzing large data sets is presented. An HTML-based codesign framework is shown which documents and organizes the analysis data. Keywords: Embedded system design, video processing, VLIW processors, performance analysis 1. Introduction A short-time-to market, improvements of design productivity, and a trend towards evermore complex systems are the main motivations for the recent interest in desi...

A lot of current e-mail systems are ASCII... This paper presents an evolution approach to enhance the capabilities of the current text-based e-mail systems. Using the proposed approach, an adapter is added to the top of the current system. As a result, multimedia e-mails can be transmitted without changing the kernel part of the existing systems. We also propose an encoding scheme that has a 7/8 bandwidth utilization rate. Using this encoding scheme, all of the non-ASCII data formats, e.g. image, voice, graphics, and so on, will be transformed to the ASCII data formats. Recently, we have developed an experimental multimedia e-mail system using the proposed method. Our system has been developed on SUN SPARC workstations and an X-window-based user-interface is provided in the system.

This paper surveys the upcoming MHEG standard, as under development by the Multimedia Hypermedia Experts Group of ISO. It's scope is to define a system-independent encoding of the structure information which can be used for storing, exchanging, and executing of multimedia presentations in final form. We use a running example to describe the building blocks of an MHEG encoded presentation. To contribute our experience using MHEG in a networked multimedia kiosk environment, we present a complete MHEG run-time environment.