1. Software control of I/O subsystem on media core processor
- Author
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Hirai, Makoto, Mochida, Tetsuji, Hashimoto, Tsutomu, Fujii, Eiko, and Kiyohara, Tokuzo
- Subjects
Multitasking -- Analysis ,Multiprocessing -- Analysis ,Real-time control -- Analysis ,I/O devices -- Analysis ,Digital video disk -- Innovations ,Audio-video systems -- Analysis ,Decoders -- Analysis ,Image processing -- Analysis ,Business ,Electronics and electrical industries ,Engineering and manufacturing industries - Abstract
To reduce the cost of DVD player, we have integrated peripheral functions to audio and video decoder LSI. The peripheral functions are controlled 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 parameter. Therefore, software with line level support of hardware can perform many kinds functions; image resizing, copy guard and dynamic blending of image and graphics. Index terms - media processor, video processing, multi-task processing, real time control
- Published
- 1998