ag-tech, Osprey-200 just have video input, Osprey-500DVpro have both A/V capture ability which is too more for our VIC. Lu Jian National Lab of Software Development Environment Beijing University of Aeronautics & Astronautics P.R.C. phone: 86-10-82317603 fax: 86-10-82317619 email:lujian at nlsde.buaa.edu.cn