CVD1

2D Comb Filter NTSC/PAL/SECAM Video Decoder

Using Adaptive 2D Comb Filter technology, CVD1 decodes NTSC/PAL/SECAM composite or S-Video, and converts it into a 16-bit YUV 4:2:2 format. The core requires only an A/D (two for S-Video support), a DC restore circuit and line buffers for implementation. The design is highly robust and locks reliably to weak signals. Asynchronous sampling and time base correction isolates incoming video jitter from the output clock.
 

Overview

Zoran’s CVD1 Video Decoder is a silicon efficient, cost effective, high video quality Intellectual Property Core for IC designs requiring video input.

CVD1 decodes NTSC/PAL/SECAM composite video or S-video and converts it into YUV 4:2:2, 16-bit digital video.

Employing adaptive 2D comb filter technology, CVD1 is able to provide high quality Y/C separation while maintaining excellent frequency response. The result is sharp, high detail video that eliminates unwanted dot crawl and false color effects.

A fully digital design, CVD1 requires the addition of only an A/D (two for S-Video support), a DC restore circuit and line buffers for implementation.

CVD1 is based on Zoran’s extensive experience delivering high quality, high volume video ICs to major OEMs worldwide.

Proven in silicon, CVD1 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
  • Accepts up to 11-bit inputs from A/D converter
  • Digital automatic gain control (AGC) supported
  • Adaptive 2D Comb Filter provides high quality video
    • 3-line 2D Comb Filter for NTSC & PAL
    • 5-line 2D Comb Filter for PAL (optional)
  • 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
  • VBI decoding supported
  • Requires only a single clock input ranging from 20MHz to 30MHz
  • Process technology independent, fully synchronous design

  • CVD1 Block Diagram

    CVD1 Block Diagram (GIF)