CVD2

3D Comb Filter NTSC/PAL/SECAM Video Decoder

Using Adaptive 3D Comb Filter technology, CVD2 decodes NTSC/PAL/SECAM composite or S-Video, and converts it into a 16-bit YUV 4:2:2 format. The core requires only two ADCs, a DC restore circuit and frame buffers for full operation. The design is highly robust and locks reliably to weak signals. CVD2 is proven in silicon.
 

Overview

Zoran’s CVD2 Video Decoder is a silicon efficient, cost effective, high video quality Intellectual Property Core for IC designs requiring video input.

CVD2 decodes NTSC/PAL/SECAM composite video or S-video and converts it into YUV 4:2:2, 16-bit digital video.

Employing adaptive 3D comb filter technology, CVD2 is able to provide the highest quality Y/C separation while maintaining excellent frequency response. Color transient enhancement provides for fast transitions on color boundaries. The result is sharp, high detail video that eliminates unwanted dot crawl and false color effects.

A fully digital design, CVD2 requires the addition of only an A/D (two for S-Video support), a DC restore circuit and frame buffers for implementation.

CVD2 is based on Zoran’s extensive experience delivering high quality, high volume video ICs to major OEMs worldwide. Proven in silicon, the CVD2 Video Decoder greatly reduces the risk and time involved when integrating the video decoding function into an IC.

Deliverables

  •  Compilable Verilog source code
  •  Bit-accurate C++ model
  •  Synopsis synthesis
  •  Test input files
  •  Documentation
  •  FPGA evaluation board available

    • Features

  • Decodes NTSC. PAL or SECAM composite or S-Video into the YUV 4:2:2 format
  • Component video inputs supported
  • Decodes all variations of the NTSC standard
  • Decodes all variations of the PAL standard (I, B, G, H, D, N, M, combination N)
  • Excellent quality Y/C separation – minimize cross luma and cross color effects
  • Superior frequency response preserves fine detail
  • VBI decoding supported
  • Accepts up to 11-bit inputs from A/D converter
  • Digital automatic gain control (AGC) supported
  • Adaptive 3D Comb Filter for highest video quality
  • Robust motion detection
  • Adaptive 2D Comb Filter used where motion is detected
    • 3-line 2D Comb Filter for NTSC & PAL
    • 5-line 2D Comb Filter for PAL (optional)
  • Color transient enhancement – provides apparent color bandwidth to 3MHz
  • Auto-detects video standard (NTSC, PAL or SECAM)
  • Auto-detects and locks to VCR trick modes
  • DECODEs weak and noisy off-air signals
  • Auto-detects and decodes Macrovision copy protection
  • Requires only a single clock input ranging from 20MHz to 30MHz
  • Process technology independent, fully synchronous design

    • CVD2 Block Diagram

    CVD2 Block Diagram (GIF)