rtusd is a foundation set of real time enabled User Space Devices/Drivers designed to link to HRT high resolution Timer controlled POSIX threads and link re-factored Linux hdw drivers for 2.6.18+. rtusd propogates Linux RT to user space generically.
Android[tm] SDK development is for those who have a dream mobile device in mind and have the potential to contribute to the development of the same at various levels. http://www.openhandsetalliance.com is promoted by Google & other industry giants.