Wanted to start this thread in order to find a suitable DVR or PC capture card with 4D comb filtering and high resolution ADC using composite. Haven't found any such devices but did come across displays with such comb filters. Thought it'd be a good idea to have a list somewhere in the forums, of devices with real 4D comb filtering for composite video.
Here's a start
Ultravision V4 series Monitors:LTI/CTI to improve the color performance
16 Bit ADC conversion and processingDynamic adaptive smoothing filter
Interlace convert to progressive interlace
Digital decoding and digital 4D comb filter
Support PAL/SECAM/NTSC video formats
VTM-LCD174P & VTM-LCD194P Monitors:4D comb filterFH7524 Monitor (and variants such as FH-7522E): LED back-lighting
Loop-through output 2xBNC Composite Video Input
1xHDMI Input Full HD
1xVGA Input Full HD
2xSes Input,built-in speakers
Latest 4D-Comb-Filter with De-interlace technology Integrated 3D noise reduction
Easy, multi-language OSD setting
Picture size and position adjustment for All types of video input
The latest power management technology
VESA-compliant mount(75/100 mm)
PIP
15-MCXXT-G Monitors (where XX is the monitor size being from: 05 to 42 inches. Smaller ones lack HDMI)sales@cop-eu.comhttp://www.cop-eu.com• High resolution
• Robust metal case
• Anti scratch glass front
• Anti glare glass front
• Wall mount using standard VESA bracket
• Active matrix TFT LCD Module
• 3D comb filter for high quality motion
• 4D comb filter adaptive for best image quality• 3D noise reduction
• Fast response time for moving images
• High brightness
Glancetron 19CCTV (not sure if this really is the exact model but it's listed being from a Taiwanese company)3D Comb Filter High Quality Motion Adaptive
4D Comb Filter Adaptive for best image quality
Really old TVsMitsubishi WD-C657 TV:4D Comb Filter