參數(shù)資料
型號： TVP5160PNP
廠商： TEXAS INSTRUMENTS INC
元件分類： 顏色信號轉(zhuǎn)換
英文描述： COLOR SIGNAL DECODER, PQFP128
封裝： GREEN, PLASTIC, HTQFP-128
文件頁數(shù)： 25/111頁
文件大小： 1400K
代理商： TVP5160PNP
SLES135E
– FEBRUARY 2005 – REVISED APRIL 2011
2.2.4
Y/C Separation
Y/C separation may be done using 3D or 2D adaptive 5-line (5-H delay) comb filters or chroma trap filter
for both NTSC and PAL video standards as shown in Table 2-1. The comb filter can be selectively
bypassed in the luma or chroma path. If the comb filter is bypassed in the luma path, then chroma notch
filters are used. TI's patented adaptive comb filter algorithm reduces artifacts such as hanging dots at
color boundaries. It detects and properly handles false colors in high-frequency luminance images such as
a multiburst pattern or circle pattern.
Table 2-1. Y/C Separation Support by Video Standard
Video Standard
2D Y/C
3D Y/C
NTSC-M
Yes
NTSC-J
Yes
PAL-B, D, G, H, I
Yes
PAL-N
Yes
PAL-M
Yes
No
PAL-Nc
Yes
No
NTSC-4.43, PAL-60
Yes
No
SECAM
No
2.2.5
3D Frame Recursive Noise Reduction
The TI proprietary frame recursive noise reduction or 3DNR reduces the level of noise in CVBS, S-Video,
or component inputs by comparing multiple frames of data and canceling out the resulting noise. The
3DNR uses the same frame buffer memory used by the 3DYC. The 3DNR may function concurrently with
3DYC.
There are various modes of operation for the 3DNR and 3DYC:
MODES
OPERATION
MEMORY REQUIRED
Mode 0
3DYC + 3DNR
4 MBytes
Mode 1
3DYC only
2 MBytes
Mode 2
2D 5-line CF + 3DNR
2 MBytes
Mode 3
2D only (default
None
2.2.6
Time Base Corrector
The time base corrector monitors and corrects for horizontal PLL phase offsets up to
±80 pixels. This
improves video decoder output quality by removing artifacts due to jittery horizontal syncs from broadcast
stations. It also reduces line tearing during VCR trick modes such as fast forward and rewind. 3DYC,
frame recursive noise reduction (3DNR), and time base correction (TBC) can be used simultaneously or
independently. Because TBC does not require any external memory, it can be used in all configurations.
2.2.7
IF Compensation
Attenuation of higher frequencies from the tuners input characteristics or due to channels that are not
correctly tuned can be corrected in the IF compensation block. This block can correct for uneven
sidebands resulting in incorrect and uneven UV demodulation.
20
Functional Description
Copyright
2005–2011, Texas Instruments Incorporated
focus.ti.com: TVP5160
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