参数资料
型号: TVP5150AM1IPBSRQ1
厂商: TEXAS INSTRUMENTS INC
元件分类: 颜色信号转换
英文描述: COLOR SIGNAL DECODER, PQFP32
封装: PLASTIC, TQFP-32
文件页数: 4/88页
文件大小: 997K
代理商: TVP5150AM1IPBSRQ1
SLES209D – NOVEMBER 2007 – REVISED SEPTEMBER 2010
www.ti.com
Figure 3-2. Chrominance Trap Filter Frequency
Figure 3-3. Chrominance Trap Filter Frequency
Response, NTSC ITU-R BT.601 Sampling
Response, PAL ITU-R BT.601 Sampling
3.4
Color Low-Pass Filter
In some applications, it is desirable to limit the Cb/Cr bandwidth to avoid crosstalk. This is especially true
in case of video signals that have asymmetrical Cb/Cr sidebands. The color LP filters provided limit the
bandwidth of the Cb/Cr signals. Color LP filters are needed when the comb filtering turns off, due to
extreme color transitions in the input image. See Section 3.21.25, Chrominance Control #2 Register, for
the response of these filters. The filters have three options that allow three different frequency responses
based on the color frequency characteristics of the input video as shown in Figure 3-4.
Figure 3-4. Color Low-Pass Filter with Filter Characteristics, NTSC/PAL ITU-R BT.601 Sampling
12
Functional Description
Copyright 2007–2010, Texas Instruments Incorporated
Product Folder Link(s): TVP5150AM1
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