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型號(hào)：	935262469557
廠商：	NXP SEMICONDUCTORS
元件分類：	消費(fèi)家電
英文描述：	SPECIALTY CONSUMER CIRCUIT, PQFP240
封裝：	32 X 32 MM, 3.40 MM HEIGHT, MSQFP-240
文件頁(yè)數(shù)：	16/518頁(yè)
文件大小：	7111K
代理商：	935262469557

TM1100 Preliminary Data Book

Philips Semiconductors

PRELIMINARY INFORMATION

File: evo.fm5, modified 7/24/99

has half the number of U and V pixels compared to YUV

4:2:2 formats. The VO converts YUV4:2:0 to YUV 4:2:2

co-sited by using the U and V chrominance pixels values

for both surrounding lines and converting the resulting U

and V pixels from interspersed to co-sited format. This is

shown in Figure 7-21. If true vertical resampling of U and

V is desired, the TM1100 image co-processor can be in-

voked on U and V to convert from YUV 4:2:0 to YUV

4:2:2 interspersed.

YUV-2X Upscaling

In the YUV-2X modes, the VO performs 2

× horizontal up-

scaling of the YUV data from SDRAM. No vertical up-

scaling is performed. The width of the result image (IM-

AGE WIDTH) should be an even number. Upscaling is

performed by four-tap filtering. For all 3 memory formats,

Y luminance data is upscaled using a (–3,19,19,–3)/32

filter to generate the missing output pixels. The output

pixels that are at the same location as the input pixels

use the corresponding input pixel values. This is shown

The U and V chrominance values are generated in the

same way as the Y luminance signal for 2

× upscaling,

assuming that both the input and output use YUV 4:2:2

Table 7-4. Alpha Blending Codes

Alpha Code

Alpha Value

Graphics

Chrominance (U,V)

Input Pixels: YUV 4:2:0

Output Pixels: YU’V’ 4:2:2

Co-sited Chrominance Output:

U’,V’ = (–1,5,13,–1)/16

Y0,0; U0,0; V0,0

Figure 7-21. YUV 4:2:0 to YUV 4:2:2 co-sited conversion.

Chrominance (U,V)

Input Pixels: YUV

Output Pixels: Y’U’V’

Output Location Same

As Input Pixel: Y’U’V’ = YUV

Upscaled Luminance Output Between

Input Pixels: Y’ = (-3,19,19,-3)/32

Upscaled Chrominance Output Between

Input Pixels: U’,V’ = (-3,19,19,-3)/32

Figure 7-22. 2

×-upscaling of Y pixels.

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