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1.
OVERVIEW
The 7736CD2 line of composite analog video to serial digital converters are dual broadcast quality video
decoders. The 7736CD2-A4 and the 7736CD2-A8 versions offer four (two per decoded channel) or eight
(four per decoded channel) high quality audio analog to digital converters. Faroudja 2D adaptive comb
filtering technology has been chosen so as not to introduce moving artifacts from the decoding process.
This makes it ideal for use in applications where the signal is destined to enter MPEG compressors. "The
low level of moving artifacts reduces the bit-rate required to digitally encode the signal for a given picture
quality level by up to 20%.
Traditional adaptive and non-adaptive 2D comb filters can introduce artifacts in areas of high detail.
However, "by using adaptive processing incorporating Faroudja's patented H-logic and V-logic
interpolation algorithms to control both the comb filter itself and the narrow and wide band chroma filters,
these artifacts are substantially reduced not only on horizontal and vertical edges, but on diagonal edges
too. In this way, the chroma filters reduce chroma noise without blurring the signal at sharp transitions in
any direction".
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In addition, control of the card is via an On-Screen Display, or remotely via VistaLINK
Features:
• One input BNC per channel. 75 Ohm or high-Z, jumper configurable input impedance
• Two SDI 525 or 625, 270 Mb/s component digital video output per channel WITHOUT OSD text
• EDH encoding on SDI outputs
• One composite analog video output with OSD text for card control
• One composite analog reference input (NTSC or PAL-B) on BNC. 75 Ohm or high-Z, jumper
configurable input impedance. One time base for both channels
• Video frame synchronizer (with +S option)
• Infinitely variable output phase (27MHz clock increments)
• Freeze modes: black, freeze
• Adjustable free running frequency via OSD. Both channels must be free-running to be able to adjust
frequency
• A comprehensive On-Screen display is available to configure the various features of the module
The Features of the Decoding Process:
• 12 bit, 8fsc sampling of input video
• Internal processing to maintain 10 bit digital video quality
• Patented Faroudja adaptive 2D comb filtering technology
• Mode for support of non-time base corrected signals
• User configurable luma and chroma detail enhancement
• User selectable noise reduction
• Chroma AGC available, if desired
• User adjustable input video processing functions: black level, gain, hue, and saturation (when chroma
AGC is enabled)
1
Faroudja Laboratories Inc, FLI2000S Data Sheet
2
Faroudja Laboratories Inc, FLI2000S Data Sheet
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Revision 1.0.4
7700 MultiFrame Manual
7736CD2 Dual Composite Decoder
SNMP.
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