| XOE Information Appliance Software Platform |
[Vendor: Transvirtual Technologies]
XOE Information Appliance Software Platform Technical Brief -- July 11, 2001
Transvirtual Technology's eXtensible Operating Environment (XOE) is an information appliance software platform that allows any content on any wireless device at anytime.
The XOE (pronounced "zo'-eee") architecture is built on three primary components on the client side and two on the server side. The components enable every necessary software layer between the client hardware and the network, and between the content source and the device itself.
The Operating System: Linux and More - PocketLinux is the original implementation of XOE, designed for information appliances running Linux. PocketLinux successfully leverages the stability, portability, scalability and low-cost licensing of the Linux operating system.
- XOE, the commercial implementation of PocketLinux, has been developed to rest on top of the Linux operating system, but engineered to be adaptable with virtually any other operating system. The full commercial release of XOE is scheduled for November 2001.
The Platform-Independent Programming Environment - XOE's operating system adaptability is achieved through Kaffe, a PersonalJava-compliant, cross-functional programming layer. Developed by Tranvirtual's engineering professionals, Kaffe provides the basis for device-independent applications. Kaffe's integration of Java and XML positions XOE as the standard platform for both the client and the server.
- The Kaffe architecture actually features greater portability and scalability than Java, supports more platforms than any other Java implementation and features a static footprint as small as 1.5 MB. Furthermore, Kaffe does not require an external window system (such as Win32 or X-Windows), extends the functionality of standard Abstract Window Toolkit (AWT) applications and allows corporate customers and OEMs to customize the user-interface.
The Application Framework: Extending XOE Functionality - XOE's extensive use of Java and XML positions it to become the standard platform for the client with optimal interoperability with leading Java-based application servers, such as BEA's WebLogic or IBM's WebSphere. XOE uses the industry-standard eXtensible Markup Language (XML) to store and process data (files and databases, news articles, images and digitally encoded voice and video).
- The application framework layer is an XHTML-based rendering engine, so XOE's user interface essentially functions as a browser, facilitating primary communications with other devices and making programming for a XOE application as easy as designing a Web page
The XML Service Gateway: Enhancing Scalability - The XOE proxy server interfaces with the client and achieves scalability by shifting functionality between the client and the server.
- This service gateway is designed to work "as-is" with existing content servers, adapt clients to external content servers and handle non-standard services such as corporate databases. It also allows the direct transfer of content not suitable for XML message-based protocols -- such as streaming video -- between the client and the server.
The Personal Control Center: Managing multiple devices - The management portal is used to manage and control multiple XOE devices.
- Configuration data can be created within or outside the client, so it is possible to configure any XOE device via a server-based application (such as a Web front-end), allowing users to configure and set synchronization preferences for their personal devices.
- XOE is engineered using standard APIs, so programmers can implement new functions at the most suitable level (OS, library, Java, XOE and HTML); there is full compatibility with legacy applications.
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