參數(shù)資料
型號: TVP5010CPFP
廠商: TEXAS INSTRUMENTS INC
元件分類: 顏色信號轉(zhuǎn)換
英文描述: COLOR SIGNAL DECODER, PDSO80
封裝: POWERPAD, PLASTIC, HTQFP-80
文件頁數(shù): 6/59頁
文件大?。?/td> 258K
代理商: TVP5010CPFP
2–2
Clamp
Clamp and AGC
Control Logic
Sync Processor
Clamp
Amplifier
Input Multiplexer
A/D
VI_1A
VI_1B
VI_2A
VI_2B
Analog Input Video
Digitized Video
Channel 1 (0–7)
Digitized Video
Channel 2 (0–7)
Figure 2–1. Analog Video Processors and A/D Converters
2.1.3
A/D Converters
The TVP5010 contains two 8-bit A/D converters which digitize the analog video signal inputs. To prevent
high frequencies which are above half of the sampling rate from entering into the system, video input(s) may
require an external antialiasing low pass filter.
2.2
Digital Processing
Figure 2–2 shows the block diagram of the digital video decoder processing. This block receives digitized
composite or S-video signals from the A/D converters, and performs Y/C separation, chroma demodulation,
and Y-signal enhancements. It also generates the horizontal and vertical syncs. The YUV digital output may
be programmed into various formats: 16-bit or 8-bit 4:2:2, 12-bit 4:1:1 and ITU-R BT.656 parallel interface
standard. The circuit uses comb filters to reduce the cross-chroma and cross-luma noise.
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參數(shù)描述
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