參數(shù)資料
型號(hào): TVP5020TQFP
廠商: Texas Instruments, Inc.
英文描述: NTSC/PAL VIDEO DECODER
中文描述: NTSC / PAL視頻解碼器
文件頁(yè)數(shù): 16/87頁(yè)
文件大小: 387K
代理商: TVP5020TQFP
2–2
Input
Interface
Chrominance
Demodulator
Gain
Control
Comb
Filter
Output
Formatter
and
Interface
Digital Control
Oscillator
Loop Filter
Burst Gate
Accumulator
Notch Filter
Comb Filter
Luminance Signal
Processing and Coring
Delay
Adjustment
Lowpass Filter
Sync Detector
Phase
Detector
Loop
Filter
Line-Locked
Clock
PLL
Power-Down
Mode Control
CLOCK
Crystal
Clock
Generator
Digital
Control
Oscillator
DAC
Clock
Generation
Circuit
Vertical
Sync
Processor
Horizontal
Sync
Processor
Counter
CH1
From A/D Converter
CHROMINANCE
LUMINANCE CIRCUITS
SYNCHRONIZATION
OEB
UV (0–7)
Y (0–7)
AVID
PREF
SCLK
PCLK
XTL1
XTL2
HSYN
PALI
(HPLL)
VSYN
FID
(VLK)
Figure 2–2. Digital Video Signal Processing Block Diagram
2.2.1
Luma/chroma separation may be done using either 2-line (1–H delay) comb filtering or a chroma trap filter.
Comb filtering is available for both the luminance and the chrominance portion of the data path. The
characteristics of the chroma trap filter are shown in Figures 2–3 and 2–4.
Y/C Separation
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