SOFTWARE CONTROL OF I O SUBSYSTEM ON MEDIA CORE PROCESSOR/

To reduce the cost of DVD player, we have integrated peripheral functi ons to audio and video decoder LSI. The peripheral functions are contr olled by the I/O processing tasks on single I/O control processor, I/O processing tasks are switched in constant cycle without overhead, to achieve real-time performance and flexibility of software control. In the case of video output handling, software can control each line para meter. Therefore, software with line level support of hardware can per form many kinds functions; image resizing, copy guard and dynamic blen ding of image and graphics.