Overview: 4 Channel Video and Audio Controller for Security Applications TW2837
The TW2837 has four high quality NTSC/PAL video decoders, dual color display controllers and dual video encoders. The TW2837 contains four built-in analog anti-aliasing filters, four 10-bit Analog-to-Digital converters, and proprietary digital gain/clamp controller, high quality Y/C separator to reduce crossnoise and high performance free scaler. Four built-in motion, blind and night detectors can increase security system feature.
The TW2837 has flexible video display/record/playback controller including basic display and MUX functions. The TW2837 also has excellent graphic overlay function, which displays bitmap for OSD, single box, 2D array box, and mouse pointer. The built-in channel ID CODEC allows auto decoding and displaying during playback and the additional scaler on the playback supports multicropping function of the same field or frame image. The TW2837 contains two video encoders with three 10-bit Digital-to-Analog converters to provide 2 posite or S-video. The TW2837 also includes audio CODEC that has four audio Analog-to-Digital converters and one Digital-to-Analog converter. A built-in audio controller can generate digital outputs for recording/mixing and accepts digital input for playback. The TW2837 can be extended up to 8/16 channel video controller using chip-to-chip cascade connection.
