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参数资料
| 型号： | CS7666-KQ |
| 厂商： | CRYSTAL SEMICONDUCTOR CORP |
| 元件分类： | 消费家电 |
| 英文描述： | DIGITAL COLOR-SPACE PROCESSOR FOR CCD CAMERAS |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封装： | TQFP-64 |
| 文件页数： | 39/42页 |
| 文件大小： | 676K |
| 代理商： | CS7666-KQ |
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CS7666
DS302PP1
39
DEFINITIONS
Color Space
A color space is a mathematical representation of a set of colors. Three fundamental color
models are RGB (used in color computer graphics and color television), YIQ, YUV, or YCrCb
(used in broadcast and television systems), and CMYK (used in color printing).
RGB Color Space
The red, green, and blue (RGB) is widely used throughout computer graphics and imaging.
Red, green, and blue are three primary additive colors where the individual components are
added together to form the desired color.
YUV Color Space
The YUV color space is the basic color space used by the PAL (Phase Alternation Line), NTSC
(National Television System Committee), and SECAM (Sequential Couleur Avec Memoire or
Sequential Color with Memory) composite color video standards. The format conveys intensity
in the Y component and color information in the U and V components. In an 8-bit system,
where RGB range from code 0 to code 255, Y has a range of code 0 to code 255. The U
component ranges over code 0 ± 112 codes, and the V component ranges over code 0 ± 157.
YCrCb Color Space
The YCrCb color space was developed as part of Recommendation ITU-601 during the
development of a world-wide digital component video standard. YCrCb are scaled and offset
versions of YUV color space. Y is defined to have a nominal range of code 16 to code 235; Cr
and Cb are defined to have a range of code 16 to code 240, with code equal to the zero level.
MYCG Colors
Standard "color" CCD imagers employ integrated filter dots over the individual pixels.
Typically, four color filters are used, Magenta, Yellow, Cyan, and Green.
Chroma Block
A group of four adjacent CCD pixel with integrated MYCG filter dots. These four pixels are
generally formed with two pixels on one horizontal scan line, and two physically just below on
the next scan line. There can also be some slight horizontal shift of the pixels to smooth the
image. The chroma block is generally processed using a "color separator" into YUV, YCrCb, or
RGB color space before any image processing.
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