什么叫做OSD—屏幕显示状态

什么叫做OSD—屏幕显示状态

OSD是on-screen display的简称，即屏幕菜单式调节方式。一般是按Menu键后屏幕弹出的显示器各项调节项目信息的矩形菜单，可通过该菜单对显示器各项工作指标包括色彩、模式、几何形状等进行调整，从而达到最佳的使用状态。

摘要在做显卡驱动或者FrameBuffer相关的东东时，可能会碰到有关OSD方面的知识，下面把我搜索的资料整理如下，并有一个非常简单实用的 例子，希望对大家有帮助！

-           OSD相关定义解释 OSD (On-Screen Display) 屏幕视控系统。 早期的屏幕要调整设定，必须使用屏幕下方的旋转钮，可调整的功能较少。但是随着技术的进步，厂商发展出一项新的OSD功能，可在屏幕上显示屏幕的相关设 定，操作的功能也比较多。 see： [url]http://www.broadcast.hc360.com/dic/html/3926.htm[/url] OSD(On-Screen Display) 是在屏幕上直接显示使用者所调整的结果和设定的内容，目前许多数字式的屏幕都支持OSD，因此屏幕可显示的宽度、高度、亮度、对比和色系等设定都是直接在 画面上进行，这个功能是直接由显示器硬件所支持的，不必使用操作系统的驱动程序，即使显示器所连接的计算机不开机也可以使用OSD。 see ：[url]http://www./cit/DIC/O/O0048.HTML[/url]

-           on-screen display An on-screen display (OSD) is a control panel on a computer monitor or television screen that allows you to select viewing options and/or adjust components of the display, such as brightness, contrast, and horizontal and vertical positioning. On a computer monitor, an on-screen display is usually activated by buttons on the bottom of the monitor. As an example, one button may bring up a display of the brightness and contrast levels, which may be adjusted by pressing the monitor‘s up or down arrow buttons. On a television screen, an on-screen display can usually be activated either through buttons on the television set itself or through the remote control. Television on-screen displays are becoming increasingly complex and interactive. In addition to the visual calibration options, the on-screen display may allow you to view program information, search for programs, or put certain channels under parental control.