Weekly Report

1
Weekly Report

• 2004. 3. 5
• Yo-Won Jeong
• ( ywjeong_at_core.kaist.ac.kr )

2
Progress for winter semester

• Paper writing for JCCI conference
• Title An adaptive video transmission system for
  VBR channel
• Under review now
• Summary of System programming
• Thread part
• Under construction
• Learning Computer Application Lab. course
• Port dummy device driver on Linux PC
• Port UART device driver on CoreCom
• Port IDE device driver on CoreCom
• Advancing video-delivery system
• Setup video-delivery system of Project Lab
• Test wireless-LAN of CoreCom
• Improve boot procedure in DNW
• ETC
• Write BK21 final report
• Supporting making proposal of wearable PC Project
• Seminar about my previous research

3
Schedule

• MarchApril
• Course work
• Advancing video-delivery system
• Paper writing about IGB-VTS for a Korean Journal
• May
• Checking all works of my laboratory
• Summary of System Programming
• Video streaming on CORE web server
• Video conferencing on CORE web server
• Major paper(JSCC) writing for a Korean Journal

4
Plan of advancing video-delivery System

• 1/192/09
• Making fundamential environment FIN
• Simple test FIN
• 2/102/16
• Test of Wireless-LAN infra FIN
• 2/173/04
• Improving boot procedure in DNW FIN
• 3/053/16
• Analyzing code
• 3/173/30
• Test of ARM CPU on CoreCom
• Improving JPEG-encoder in sender
• 3/314/13
• Improving decoder in receiver
• 4/144/29
• Improving network part

With Mr. Seo
5
Weekly progress

• Paper writing of IGB-VTS
• Reading the related papers and magazines
• E.Martinian, Decreasing distortion using low
  delay codes for bursty packet loss channels,
  IEEE Tr. on Muitimedia, Sep. 2003
• C.Tryfonas, Efficient algorithms for computation
  of the loss curve of video sources, IEEE Tr. on
  Multimedia, Feb. 2004
• S.Wenger, H.264/AVC Over IP, IEEE Tr. on CSVT,
  Jul. 2003
• Supporting making proposal of wearable PC Project
• I Searched and summarized services and devices
  related to WBAN

6
Improving boot procedure in DNW (1/2)
Weekly progress

• How to transmit Keyboard inputs to CoreCom
• WndProc(UINT Message, WPARAM wParam)
• switch(Message)
• case WM_CHAR
• WriteCommBlock((char)wParam)
• How to receivedisplay strings from CoreCom
• DoRxTx()
• while(isConnected)
• ReadCommBlock(rxBuf)
• if(length of rxBuf ! 0)
• SendMessage(_DisplayHandler,
  DISPLAY_STRING, rxBuf)

Begin as Thread when I/O interrupt
Writes character on TxBuf DoRxTx() transmit
it through serial port
Begin as Thread when program start
Calls display API
7
Improving boot procedure in DNW (2/2)
Weekly progress

• Improved feather
• Previous boot procedure
• Serial_port_connect ? Download_only ?
  input_address ? USB_transmit ? select_ramdisk_file
  ? Download_and_run ? USB_transmit ?
  select_kernel_image_file ? login
• Current boot procedure
• Just one click