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以ST高清晰度电视机顶盒方案为例,首先介绍STi7000提供的OSD单元的特点和原理,并在此基础上设计并实现了一个OSD硬件抽象层(HALOSD),然后利用OSD硬件抽象层实现了系统的用户界面。
Taking the ST high definition television set top box as an example, this paper first introduces the features and principles of the OSD unit provided by STi7000, designs and implements an HALOSD OSD hardware abstraction layer (HALOSD) based on that, and then uses OSD hardware abstraction layer to realize the system User interface.