bt829bkrf ETC-unknow, bt829bkrf Datasheet - Page 31

• Manufacturer Part Number: bt829bkrf
• Description: Video Streamii Decoders
• Manufacturer: ETC-unknow

Bt829B/827B
VideoStream II Decoders
Figure 1-8. Combined Luma Notch, 2x Oversampling and Optional Low-Pass Filter Response (NTSC)
Figure 1-9. Combined Luma Notch, 2x Oversampling and Optional Low-Pass Filter Response (PAL/SECAM)
ICON
ICON
QCIF
QCIF
CIF
CIF
The Bt829B uses 32 different phases to accurately interpolate the value of a pixel.
This provides an effective pixel jitter of less than 6 ns.
duce a step function in the video signal that effectively introduces high-frequency
spectral components. Poly-phase interpolation accurately interpolates to the cor-
rect pixel and line position providing more accurate information. This results in
more aesthetically pleasing video as well as higher compression ratios in band-
width limited applications.
filtering options. The filter characteristics are shown in Figure 1-10. The Bt829B
provides up to 5-tap filtering to ensure removal of aliasing artifacts. Figure 1-11
displays the combined responses of the luma notch and 2x oversampling filters.
The Bt829B implements horizontal scaling through poly-phase interpolation.
In simple pixel- and line-dropping algorithms, non-integer scaling ratios intro-
For vertical scaling, the Bt829B uses a line store to implement four different
Full Spectrum
Full Spectrum
D829BDSA
1.7 Video Scaling, Cropping, and Temporal Decimation
ICON
ICON
QCIF
QCIF
1.0 Functional Description
CIF
CIF
Pass Band
Pass Band
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