built-in channel ID to identify channels of interest for the CODEC or playback module to properly demultiplex the multi-channel stream into single channel streams. The motion / night / blind detection information are also embedded as part of the channel ID. The display multiplexer displays up to 8 video windows, with 4 for video decoders and 4 for either digital interface or video decoder interface to support pseudo 8 channel inputs. The location and size of each of the 8 display windows are fle.
Full PDF Text Transcription for TW2851 (Reference)
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4 Channel A/V Decoder with Multiplexer/VGA/ LCD Display Processor for Security Applications TW2851 The TW2851 is a fully integrated A/V decoder, multiplexer, and display ...
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he TW2851 is a fully integrated A/V decoder, multiplexer, and display processor chip. It has eight CVBS analog inputs fed into four internal high quality NTSC/PAL video decoders. It has four digital input ports supporting various type of input format, including four BT 656 inputs, two BT 601 inputs, or one 1120 playback input. It has one optional VGA display controller or LCD panel controller, two CVBS display, one digital SPOT output, two digital recorder outputs, and one digital display output. Every output has its associated graphic overlay function that displays bitmap for OSG, single box, 2D array box, borders, privac
TW2851 Datasheet
