标准编号：ISO/IEC 29341-3-3:2008
中文名称：信息技术 通用即插即用（UPnP）设备结构 第3-3部分：音频视频设备控制协议 媒体服务器设备
英文名称：Information technology — UPnP Device Architecture — Part 3-3: Audio Video Device Control Protocol - Media Server Device
发布日期：2008-11
标准范围
This device template is compliant with the UPnP Device Architecture version 1.0. It defines a device typereferred to herein as MediaServer:1.The MediaServer template defines a general-purpose device that can be used to instantiate any ConsumerElectronic (CE) device that provides AV content (e.g. media) to other UPnP devices on the home network. It isbased on the UPnP AV Architecture Framework (described in another document). It exposes its content via theContent Directory service (refer to the Content Directory Service Template for details). As such, theMediaServer can handle any specific type of media, any data format, and transfer protocol.Example instances of a MediaServer include traditional devices such as VCRs, CD Players, DVD Players, audiotapeplayers, still-image cameras, camcorders, radios, TV Tuners, and set-top boxes. Additional examples of aMediaServer also include new digital devices such as MP3 servers, PVRs, and Home Media Servers such as thePC. All though these devices contain diverse (AV) content in one form or another, the MediaServer (via theContent Directory) is able to expose this content to the home network in a uniform and consistent manner. Thisability allows the MediaServer to instantiate traditional single-function devices as well as more recent multifunctiondevices such as VCR-DVD players and the general purpose Home Media Server, which contains awide-variety of content such as MPEG2 video, CD audio, MP3 and/or WMA audio, JPEG images, etc.The MediaServer template is very lightweight and can easily be implemented on low-resource devices such asstill-image cameras or MP3 players that want to expose their local content to the home network. TheMediaServer can also be used for high-end Home Media Servers that contain dozens of Gigabytes ofheterogeneous content. Refer to the Theory Of Operation section for some specific examples of theMediaServer.A full-featured MediaServer device provides clients with the following capabilities:? Enumerate and query any of the content that the MediaServer can provide to the home network.? Negotiate a common transfer protocol and data format between the MediaServer and target device.? Control the flow of the content (e.g. FF, REW, etc).? Copy (import) content to the MediaServer from another device.This device template does not provide:? The ability to renderer AV content.
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