多媒体用户界面的设计.pptVIP

多媒体用户界面的设计 多媒体用户界面主要强调媒体的表现（pre-sensation），有以下几点需要考虑： 1.决定要通信的合适信息 2.表现信息的关键特性 3.确定通信的目的 4.为信息表现选择合适的媒体 5.同步不同媒体，并在一个表现片段中进行协同 6.为表现的信息提供交互手段 General Design Issues 结构考虑 一个有效的表现设计过程不仅考虑串行的动作流，还考虑并行和交互的动作[SF91]。这就意味着在多媒体表现系统的不同部件之间进行额外的信息交流和反馈，另外，在系统设计时，还必须考虑对话的目标的重点、用户上下文、当前任务、媒体选择等问题。 Architectural Issues An effective presentation design process should not only involve sequential flow of Actions, but also parallel and interactive actions [ SF91 ]. This means that there is a requirement for extensive feedback going on between the components making decisions about media and modalities. Additionally, the design includes a number of higher-level concerns, such as goals and focus of the dialogue, the user’s context and current task, and media selection to represent this information in a way that corresponds to these concerns 表现的信息特征 一组完备的信息特征使用使得知识定义和多媒体信息的表现娈得容易，这是由于它允许在信息与表现技术之间建立合适的关系 Information Characteristics for Presentation A complete set of information characteristics makes knowledge definition and representation easier because it allows for appropriate mapping between information and presentation techniques. 表现功能 表现功能用于显示对象，将表现功能与表现形式、表现网络以及它所携带的住处相分离是很重要的。从不同视角看待表现功能有多种方法，如有有方法将表现功能看做是一组信息查询函数[RM91]，有的方法认为它是媒体无关表现目标的一种层次表达。 Presentation Function Presentation function is a program which displays an object (e.g., printf for display of a character) It is important to specify the presentation function independent from presentation form, style or the information it conveys. Several approaches consider the presentation function from different points of view. For example, one approach views the presentation function as a set of information - seeking goals [ RM91 ], another approach considers it as a hierarchical representation of media-independent presentation goals derived from a plan-based theory of communication. 表现设计知识 内容选择是用户获取