《symbian操作系统》课程教学资源（技术资料）Symbian OS v9.5（Efficiency and Power）

Symbian OSv9.5:Efficiency and Power Svmbian has unveiled the new benchmark in mobile operating systems.Svmbian os v9.5 Combining improved performance with a range of new developer features,it promises faster cheaper and more feature-rich Symbian OS phones Symbian OS v9.5 brings some of the biggest changes to the operating system since the release of v9,with over 70 new features.This new release is designed to further reinforce Symbian OS as the leading mobile operating system.For developers there are several features that improve the perormanceofapications.lnadtonenhancemerntstomidlewareandaplcatio engin enterprise solutions Improved application performance Symbian OS v9.5 includes three new performance enhancing technologies,these are: Demand pingcmm used in server-baseerinsysmthis technology improve rmance by l n only the code required to execute s fic functic not an entire application or DLL.It means that applications start more quickly,as will the phones themselves.As a result,phones can be built with less RAM or will ena ble users to do more with current RAM footprints.Demand paging will have the most impact on those phones employing NAND flash in their ROM memory. File server caching availableaitathird-partylicion file serve their readwrite RAM defragmentation -an automatic service that runs in the background defragmenting free memory to maximize the pool available to applications.As well as enabling memory to be used more efficiently.RAM defragmentation contributes to improved battery usage by freeing up banks of memory that can then be powered down New and enhanced middleware Three completely new subsystems are delivered in Symbian OS v9.5.These are: SOL database -based on an implementation of the open source SQLite,this new database technology provides the scalability required for data intensive applications.In addition,by delive standard SQLsupport,the ability to port desktop nlications is enhanced Location-based services-with support for GPS and mobile originated and mobile terminated location requests,developers will be able to deliver richer navigation and other location-based applications. .Bearer mobility-will allow applications toseamlessly move from one bearer toanother (for exa m 3G to WLAN),without having to re-initiate network connections In addition to SQL database support,for developers porting standard C applications from the desktop,Symbian OS v9.5 delivers P.I.P.S.as an integral part of the operating system. Significant improvements have been made to the PIM applications.The contacts database has been migrated to to offer enhanced scalability.,new properties have bee en added within the agenda model toprov id enh ed compatibility with server base applications,such as Microsoft Exchange Server and Lotus Notes. Compatibility with Microsoft's Exchange Server and desktop systems has also been improved, with implementations of Mobile ActiveSync and Media Transfer Protocol(MTP).This will enable

Symbian OS v9.5: Efficiency and Power Symbian has unveiled the new benchmark in mobile operating systems, Symbian OS v9.5. Combining improved performance with a range of new developer features, it promises faster, cheaper and more feature-rich Symbian OS phones. Symbian OS v9.5 brings some of the biggest changes to the operating system since the release of v9, with over 70 new features. This new release is designed to further reinforce Symbian OS as the leading mobile operating system. For developers there are several features that improve the performance of applications. In addition, enhancements to middleware and application engines will enable even more exciting location-based and real-time applications, as well as solid enterprise solutions. Improved application performance Symbian OS v9.5 includes three new performance enhancing technologies, these are: • Demand paging — commonly used in server-based operating systems, this technology improves performance by loading only the code required to execute specific functions, not an entire application or DLL. It means that applications start more quickly, as will the phones themselves. As a result, phones can be built with less RAM or will enable users to do more with current RAM footprints. Demand paging will have the most impact on those phones employing NAND flash in their ROM memory. • File server caching — available as an option to any third-party application, file server caching will enable data intensive applications to improve their read write performance. • RAM defragmentation — an automatic service that runs in the background, defragmenting free memory to maximize the pool available to applications. As well as enabling memory to be used more efficiently, RAM defragmentation contributes to improved battery usage by freeing up banks of memory that can then be powered down until required. New and enhanced middleware Three completely new subsystems are delivered in Symbian OS v9.5. These are: • SQL database — based on an implementation of the open source SQLite, this new database technology provides the scalability required for data intensive applications. In addition, by delivering standard SQL support, the ability to port desktop applications is enhanced. • Location-based services — with support for GPS and mobile originated and mobile terminated location requests, developers will be able to deliver richer navigation and other location-based applications. • Bearer mobility — will allow applications to seamlessly move from one bearer to another (for example, from 3G to WLAN), without having to re-initiate network connections. In addition to SQL database support, for developers porting standard C applications from the desktop, Symbian OS v9.5 delivers P.I.P.S. as an integral part of the operating system. Significant improvements have been made to the PIM applications. The contacts database has been migrated to the SQL database to offer enhanced scalability. In addition, new properties have been added within the agenda model to provide enhanced compatibility with server based applications, such as Microsoft Exchange Server and Lotus Notes. Compatibility with Microsoft’s Exchange Server and desktop systems has also been improved, with implementations of Mobile ActiveSync and Media Transfer Protocol (MTP). This will enable

Symbian OSv9.5 devices to synchronize PIM data with enterprise servers and music,pictures and video with a PC host. For public APls published in the SDKs,Symbian OS v9.5 is binary compatible e with earlier v9 releases. Other improvements There are also several other improvements that will help enhance the overall usability of Symbian Os phones.These include- Memory optimization in memory intensive subsystems,such as the camera modules and messaging framework Batterylife improvements Support for cryptographic hardware 。Digital TV feature Support for HSUPA Support for the latest generationSD and MMC cards

Symbian OS v9.5 devices to synchronize PIM data with enterprise servers and music, pictures and video with a PC host. For public APIs published in the SDKs, Symbian OS v9.5 is binary compatible with earlier v9 releases. Other improvements There are also several other improvements that will help enhance the overall usability of Symbian OS phones. These include: • Memory optimization in memory intensive subsystems, such as the camera modules and messaging framework • Battery life improvements • Support for cryptographic hardware • Digital TV features • Support for HSUPA • Support for the latest generation SD and MMC cards