NVIDIA VCQFX550PCIEPB User Guide - Page 84

Chapter 6 Configuring HDTV If you use plasma displays with burn-in display issues, you can use the Video border option on the TV Output page to display grey instead of black for the borders when the selected resolution is smaller than the selected native HDTV format. See "Device Adjustments - TV Output" on page 76. Optimizing HDTV Viewing The NVIDIA driver provides three user-correction methods - "Underscan", "Overscan Shift", and Native - to solve the problem of the Windows desktop overscanned and cutting off the Windows taskbar Start button. Table 6.3, "Optimizing HDTV Viewing" summarizes the various correction methods and reasons for use. Table 6.3 Optimizing HDTV Viewing User task Recommended Corrective Method Reasons Watch movies Native • Browse the Web • Run Windows applications Play full-screen games Overscan shift Underscan Underscan Underscan correction always reduces the quality of the video being watched since it changes the size of the native video resolution by compressing the size of the pixels. In addition, sometimes there is additional electronic information recorded in the invisible portions of the video stream. This is not supposed to be seen directly by the user, as it can be very distracting. Underscan or overscan shift would cause this information to now become visible. Browsing the web requires that the end user see all information in the browser window. Either of these modes will allow the users accomplish this and provide the best web viewing experience. If the application correctly queries the graphics driver and requests the modes it supports, you will be able to play the game in the corrected underscan mode and see all of the information on your display. However, some games do not query the graphics driver. Instead, these games hard code the resolutions supported in the game directly into their code. Therefore you can use an alternative way to correct the resolution, such as checking the display for correction options. 84 User's Guide