Apple 5320CD Manuale Utente

 

 Basics

TV/FM Radio Tuner Card - 17

 

The TV picture is in its own window on the desktop, and the 

default size of the window is 320x240 pixels. The picture 

can be resized from 160x120 pixels up to 640x480 pixels. 

The resolution of the picture does not increase at larger 

window sizes, but the image is expanded by doubling the 

pixel size or by two-dimensional linear interpolation. 

The TV signal is carried in YUV format for improved picture 

clarity. The YUV format is 16-bit, with 8 bits for the Y 

(luminance) channel and 8 bits for the U and V 

(chrominance) channels to share by multiplexing. The 

picture is clearer because the YUV format carries more 

levels of luminance information.