Abstract
Optical disk systems will replace VCR systems in broadcasting stations in the future because of their advantageous random access and high endurance features. A100 Mbps read/write experiment using a laser beam for broadcasts has already been conducted, but 100Mbps is only a minimum rate. Playback at higher rates is needed for transmitting of collected materials and post production. To address this issue, we have studied ways to achieve a higher transfer rate in playback and nonlinear editing in units comprising a certain number of frames. Performance of current optical disk drive enables two times higher transfer rate in outer area, and also enables nonlinear editing in an 8-frame unit, by using constant-angular-velocity (CAV) rotation method. We conclude that using both recording the outer area and the CAV rotation method is a suitable approach for newsgathering.
