missed delivered on-demand right in the comfort of her own room. In a city 5,000
kilometers away, a student is using the on-demand lectures to take part in the same course
delivered completely online. With the advent of streaming technology and the possibilities it
creates, scenarios like these have been repeated all over the world.
2. Related Work
Traditional study such as blackboard is provided a rich interactive between lecturer and
learner that cannot easily be replaced with PowerPoint slideshows. ChalkTalk [1] is
presented in this year. This system automatically produces e-learning materials from a
videotaped chalk talk lecture in front of an ordinary blackboard or whiteboard. But this lack
offs the activity. The Learning Activity Management System (LAMS) [2] is provided more
student interactive such as question and answer (with student answers shared with the
group), asynchronous discussion forum, synchronous chat. The pilot evaluation of LAMS,
only 15% of students were willing to discuss ideas in front of their peers in the classroom,
but over 80% of the same students were willing to discuss their ideas within LAMS. e-
learning is provided self-managed learning that learner should to study when they want, but
some group of people still like traditional teaching, where the lecture times were fixed [3].
Therefore, we proposed the additionally feature for e-learning to make virtual classroom
were consisted the learner and the lecturer on the internet. This virtual classroom we fix the
times to learn but the learner and lecturer can access to the classroom from anywhere that
have internet. We proposed two features for the virtual classroom. Firstly, the lecturer
teaches by PowerPoint slide. So the learner can should synchronous the slide page with the
lecturer or the learner should the slide page by them self that can difference from the
lecturer but not over the page that lecturer go to. This feature makes the learner comfortable
to learn. Secondly, in a virtual classroom the learner and lecture can have activity with share
board. This is the two-way communication that will make more interactive. Nowadays,
there are many collaboration and communication programs in the market such as
NetMeeting, CollabWorx Virtual Classroom, Breeze, MSN, or Skype. Some programs are
free and some are not. Each program has pros and cons. Let’s us consider the features
offering in each program.
3. Design of Classroom on the Internet
3.1 Functions and protocol classification
There are some requirements that should be taken into consideration as follows: 1) shared
object component and 2) VDO streaming part. There are many objects such as white board,
presentation, chat, AV presence and people list in classroom on the internet. They are
allowed to be shared with other students. Remote shared objects are managed by streaming
server. Client can access shared objects and get update whenever a change is made to that
shared object. VDO streaming part is also provided on the streaming server. The
Top level
design is shown in Fig. 1.
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