Philips Semiconductors
Product specification
9-bit video input processor
SAA7113H
8.9
VBI-raw data bypass
For a 27 MHz VBI-raw data bypass the digitized CVBS signal is upsampled after AD-conversion. Suppressing of the back
folded CVBS frequency components after upsampling is achieved by an interpolation filter; see Fig.22.
MGG067
6
V
handbook, full pagewidth
(dB)
0
−6
−12
−18
−24
−30
−36
−42
−48
−54
0
2
4
6
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14
f (MHz)
Fig.22 Interpolation filter for the upsampled CVBS signal.
1999 Jul 01
25