Video decoder and HD digitiser come together

Complete single-chip system for improving video image and colour quality in advanced high-definition TVs, video processors, audio/video receivers and DVD recorders.

Analog Devices has expanded its Advantiv advanced television portfolio with a new 12bit resolution 3D comb video decoder with an integrated 150Msample/s digitiser for full-HD 1080p input formats.

The ADV7802 provides system designers with a complete single-chip solution for improving video image and colour quality in advanced high-definition televisions (HDTVs), video-processors, audio/video receiver (AVR) systems and DVD recorders.

The new 12bit 3D comb video decoder offers superior processing resolution for motion detection and 3D comb filtering operations, versus existing video decoder solutions, enabling designers to reduce tradeoffs between image sharpness and Y/C separation performance - something that has traditionally been reserved for professional and studio broadcast applications - without the added cost and design complexity of discrete chip solutions.

The ADV7802 is the industry's only true 12bit-resolution decoder with 4:4:4 sampling throughout the processing pipeline, including support for RGB SCART inputs, to provide designers with a higher level of system performance compared with existing 8bit industry offerings using 4:2:2 sampling schemes.

The addition of an on-chip interface with support for SDR (single datarate) DRAM reduces overall system cost, and support for DDR (double datarate) DRAM enables simultaneous 12bit 3D comb (NTSC or Pal), digital noise reduction (DNR) and time base correction (TBC), providing designers with a complete solution for decoding standard-definition (SD) video for noisy off-air broadcast signals or poor-quality VCR tape recordings with unstable timing.

The ADV7802's multiformat conversion capability allows designers to easily convert analogue video signals to create the vivid images, deeper colours and enhanced digital imaging features that consumers have come to expect in their video-processing and digital-TV applications.

For TV chassis designs targeted to multiple end markets, the ADV7802 automatically detects and performs 3D comb filtering for a wide range of video standards in all regions, including all variants of NTSC and Pal.

Advanced Secam decoding is also supported.

In addition, support for detecting and decoding weak terrestrial TV broadcast signals has been improved to ensure the best possible picture, even under remote reception conditions.

Leveraging ADI's superior analogue-to-digital (ADC) convertor technology and advanced adaptive Y/C separation algorithms, the highly integrated single-chip solution provides high-end video performance with its three-tap, zero field latency 3D comb filter which operates on the full Pal field sequence.

The ADV7802's 3D adaptive comb filter produces sharper, more accurate colour reproduction, while the decoder's enhanced 12bit YCbCr or RGB output capability (with interlaced or conversion to progressive scan timing) enhances a system's HDMI (High Definition Multimedia Interface) Deep Colour processing capabilities - even for analogue input sources.

The ADV7802 12bit 3D comb video decoder is now shipping in production quantities and is available in a 176-pin TQFP (thin quad flatpack) package.

The ADV7802 is priced below US $12.00 per unit in volume quantities.

A 10bit version, the ADV7800, is also available in a 176-pin TQFP and is priced below US $10.00 per unit in volume quantities.

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