Research And Implementation On Key Issues Of Mobile Learning System For Smart Terminal

In the information age,with the continuous growth of mobile phone users and the high demand for knowledge acquisition,accessing to knowledge through mobile devices,namely,Mobile learning is more important than ever before.Although there are a lot of mobile learning systems,they have some limitations which are difficult to meet the needs of specific users.In the field of online education,some important problems in the submission and correction of student's homework have not been solved well for a long time.Specially,it still is open issue how for the students to submit homework easily through mobile devices,how for the teachers to set questions conveniently through mobile devices and to correct homework and give interpretation of homework efficiently,etc.This paper first discussed the development trend and research status of mobile learning which further defined the meaning of mobile learning research.And then we studied on the methods to solve the key issues in mobile learning system through the analysis of some deficiencies of the existing mobile learning system about online education.Finally,a mobile learning system with complete functions based on Android has been implemented combined with accessibility features such as live video tutorials,curriculum management which submits the submission and correction of student's homework as a starting point.The system can let students obtain homework which gave by teachers through joining courses.Then the teachers can correct the homework by writting and voice.The teachers can also give unified explain about homework by the live video.The specific solutions are given in this paper which is aiming at the key problems of how to correct homework conveniently,how to effectively explain the homework on the mobile device,etc.Specific content as follows:(1)According to the characteristics of the PDF format file,the speech annotation file is attached to the end of the homework which is PDF format in binary form.And at the same time,it is sure that this operation does not affect the reading of the original content of the document by the PDF reader.Then the speech annotation file can be separated and read out by looking at the end mark of the PDF file.The overall processing time is controlled within a certain range.(2)The accuracy of the location where is added handwritten annotation to the PDF format file is made further optimization.The system is adapted for the smart terminals of different proportion of the screen and screen resolution in order to meet the needs of experience on different devices.(3)Considering that students need to unified explain about homework after the completion of correcting students's homework,this paper combined with the current popular RTMP(Real Time Messaging Protocol)streaming media transmission technology,so that the function of live classroom is joined.The image resolution also is optimized through the sharpening algorithm.At last,the mobile learning system is implemented and rigorously tested.The experiment results show that the system has good fluency and stability.