參數(shù)資料
型號(hào)： VPX3224D
廠商： Electronic Theatre Controls, Inc.
英文描述： Video Pixel Decoders
中文描述： 視頻解碼器像素
文件頁數(shù)： 14/92頁
文件大?。?/td> 672K
代理商： VPX3224D
PRELIMINARY DATA SHEET
VPX 3225D, VPX 3224D
14
Micronas
2.5. Component Processing
Recovery of the YCbCr components by the decoder is
followed by horizontal resizing and skew compensation.
Contrast enhancement with noise shaping can also be
applied to the luminance signal. Vertical resizing is sup-
ported via line dropping.
Fig. 2–11 illustrates the signal flow through the compo-
nent processing stage. The YCbCr 4:2:2 samples are
separated into a luminance path and a chrominance
path. The Luma Filtering block applies anti-aliasing low-
pass filters with cutoff frequencies adapted to the num-
ber of samples after scaling, as well as peaking and cor-
ing. The Resize and Skew blocks alter the effective
sampling rate and compensate for horizontal line skew.
The YCbCr samples are buffered in a FIFO for continu-
ous burst at a fixed clock rate. For luminance samples,
the contrast and brightness can be adjusted and noise
shaping applied. In the chrominance path, Cb and Cr
samples can be swapped. Without swapping, the first
valid video sample is a Cb sample. Chrominance gain
can be adjusted in the color decoder.
Resize
Skew
Resize
Skew
Sequence
Control
F
I
F
O
16 bit
Contrast,
Brightness &
Noise shaping
Active Video
Reference
Latch
Luma Filter
with peaking
& coring
Y
out
Cr
out
Y
in
CbCr
in
Luma
Phase Shift
Chroma
Phase Shift
Fig. 2–11:
Component processing stage
Cb/Cr-
swapping
Table 2–2:
Several rasters supported by the resizer
NTSC
PAL/SECAM
Format Name
640 x 480
768 x 576
Square pixels for broadcast TV (4:3)
704 x 480
704 x 576
Input Raster for MPEG-2
320 x 240
384 x 288
Square pixels for TV (quarter resolution)
352 x 240
352 x 288
CIF – Input raster for MPEG-1, H.261
160 x 120
192 x 144
Square pixels for TV (1/16 resolution), H.324, H.323
176 x 120
176 x 144
QCIF – Input raster for H.261
32 x 24
32 x 24
Video icons for graphical interfaces (square)
相關(guān)PDF資料
PDF描述
VPX3224E Video Pixel Decoders
VPX322XE Video Pixel Decoders
VQ1000J N-Channel Enhancement-Mode MOSFET Transistor(最小漏源擊穿電壓60V,夾斷電流0.225A的N溝道增強(qiáng)型MOSFET晶體管)
VQ1000J N-Channel 60-V (D-S) MOSFET
VQ1001J Dual N-Channel 30-V (D-S) MOSFET with Schottky Diode
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
VPX3224D-C3 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microprocessor
VPX3224E 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Video Pixel Decoders
VPX3225D 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Video Pixel Decoders
VPX3225D-C3 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microprocessor
VPX3225E 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Video Pixel Decoders
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