935263595557 NXP Semiconductors, 935263595557 Datasheet - Page 15

• Manufacturer Part Number: 935263595557
• Manufacturer: NXP Semiconductors

Specifications of 935263595557

• Lead Free Status / Rohs Status: Compliant

Philips Semiconductors
9397 750 14231
Product data sheet
8.4 Luminance processing
The 9-bit luminance signal, a digital CVBS format or a luminance format (S-VHS and HI8),
is fed through a switchable prefilter. High frequency components are emphasized to
compensate for loss. The following chrominance trap filter (f
center frequency set according to the selected color standard) eliminates most of the color
carrier signal. It should be bypassed via I
S-video (S-VHS and HI8) signals.
The high frequency components of the luminance signal can be peaked (control for
sharpness improvement via I
filters with selectable transfer characteristic. This signal is then added to the original
(unpeaked) signal. For the resulting frequency characteristics see
A switchable amplifier achieves common DC amplification, because the DC gains are
different in both chrominance trap modes. The improved luminance signal is fed to the
BCS control located in the chrominance processing block (see
Fig 11. Luminance control subaddress 09h, 4.43 MHz trap/CVBS mode, prefilter on and
(1) 43h.
(2) 53h.
(3) 63h.
(4) 73h.
(dB)
V
Y
different aperture band-pass center frequencies
18
18
30
6
6
0
Rev. 03 — 9 May 2005
(1)
(2)
(4)
(3)
2
2
C-bus subaddress 09h; see
2
C-bus bit BYPS (subaddress 09h, bit 7) for
4
(1)
(2)
(4)
(3)
Table
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
0
9-bit video input processor
6
= 4.43 MHz or 3.58 MHz
Figure
37) in two band-pass
Figure 11
f
Y
SAF7113H
(MHz)
19).
mgd139
to
8
Figure
15 of 75
18.