Security Surveillance IC Solutions
Quad/Mux Systems
4ch/8ch/16ch DVR
www.intersil.com
Techwell
Target Applications
Features
Four Video Decoders
The TW2804 includes four high quality NTSC / PAL video decoders,
which convert analog composite to digital component YCbCr for security
applications. The TW2804X contains four 10-bit A/D, proprietary
digital gain/clamp controllers, and utilizes proprietary techniques for
separating luminance & chrominance to reduce both cross-luminance
and cross-chrominance artifacts. The high performance dual scalers in
each channel offer two differently scaled video outputs with 54MHz ITU-R
BT.656 format for security system design. Four built-in motion detectors
can
also
increase
the
feature
of
a
security
system.
TW2804
Accepts all NTSC (M/N/4.43) / PAL
(B/D/G/H/I/K/L/M/N/60) standard
formats with auto detection
Four 10-bit video CMOS analog to
digital converters
Adjust video level with proprietary
automatic clamp and gain control
Proprietary architecture for locking to
weak, noisy, or unstable signals
High performance adaptive comb filters
for all NTSC/PAL standards
IF compensation filter for improvement
of color demodulation
PAL delay lines for correcting PAL
phase errors
Programmable hue, saturation, contrast,
brightness and sharpness
Dual high quality horizontal and vertical
down scaler for each channel
Four built-in motion detectors for
security system
Supports the standard ITU-R BT.656 /
8bit ITU-R BT.601 format
Supports two differently scaled output
mode with 54MHz ITU-R BT.656 format
Supports a two-wire serial or parallel
interface
Low power consumption
128 PQFP package
4-in-1 NTSC/PAL Video Decoder
for Security Applications
TECHWELL
SECURITY