The TBCPlus 4:2:2 CCIR-601 infinite window time base corrector is loaded with features to increase its performance and flexibility. These additional options expand on that flexibility to offer even more performance and increase the professional applications that the TBCPlus can be used in.
The currently available options are:
| ITEM | FEATURE | BENEFIT |
|---|---|---|
| FRAM SIMM | Adds an additional 1MB of Frame RAM to the TBCPlus. | Enables the use of the Two Frame mode (Live or Frozen) which allows for full 4-field frame captures and outstanding full frame repeating/ dropping correction without interfield artifacts (common with only a single frame of correction window). The Expansion FRAM SIMM can also be used as a swap buffer memory for image processing software to use. |
| Digital Comb Filter | Digital Filtering of Composite video into SVHS (Y/C) video | Using adaptive multi-dimensional signal processing, the Digital Comb Filter filters the selected composite video (CVBS1 or 2) into digital luminance (Y) and chrominance (C) signals, providing cleaner, crisper digital video. |
| Operates in Multi-Standard environments | The Digital Comb Filter can handle both PAL and NTSC video signals to provide international video professionals with the flexibility to handle the two most popular video standards. | |
| Filters out unwanted artifacts | The Digital Comb Filter greatly reduces the "hanging dots" and "chroma crawl" effects common to composite video and enhances it to Y/C (S-Video) quality performance levels. | |
| Fully integrated into the TBCPlus environment | The Digital Comb Filter simply plugs into the TBCPlus and the already installed TBCPlus software gives you complete control using the Advanced User Control panel. |
Applications
FRAM SIMM
The FRAM SIMM is useful in situations where poor video needs to be time base corrected, and a single frame at a time may not be enough. Likewise, it serves as a fast swap buffer when performing Stillstores or using the TBCPlus as a display device.
Digital Comb Filter
The Digital Comb Filter module is useful in a video production environment when the main source of video input is composite video and the highest level of signal quality and output is required. Some typical users of a Digital Comb Filter equipped TBCPlus include:
| FRAM SIMM Technical Specifications | ||
|---|---|---|
| SIMM Size | One full frame (NTSC or PAL/SECAM) of FIFO memory | |
| Operational Modes | Two Frame mode (Live or Frozen) can be selected when this SIMM is installed. The Two Frame mode allows for full 4-field frame captures and outstanding full frame repeating/dropping correction without interfield artifacts (common with only a single frame of correction window) Effectively doubles the correction window to two frames for professional applications. The Expansion FRAM SIMM can also be used as a swap buffer memory for image processing software (ImageFX) to use. | |
| Mechanical | 72-pin custom GVP SIMM for TBCPlus | |
| Environmental Information | Operating Temperature | +32°F (0°C) to +120°F (50°C) |
| Operating Humidity | 10% to 90% Non-Condensing | |
| Power Requirement | derived from TBCPlus | |
| Digital Comb Filter Technical Specifications | ||
|---|---|---|
| Applicable Video Standards | NTSC-M, NTSC-N, NTSC-4.43 (50/60Hz) PAL-B/G, PAL-M, PAL-N, PAL-4.43 (60Hz) NOTE: The Digital Comb Filter must be in ByPass mode for SECAM input signals. | |
| Operational Modes | 2-Line Comb (Standard NTSC) 4-Line Comb (Standard PAL) BandPass Chroma/LowPass Luma (Standard Y/C Signals) ByPass (Inactive, no filtering) | |
| NOTE: For Comb Filter Active modes (NTSC/PAL) the input composite video signal must have a constant phase relationship between the subcarrier and horizontal frequencies in order for the comb filtering function to operate correctly. Video sources that commonly meet this input quality requirement include laser disk players, video cameras, time-base-corrected video sources, remote video feeds, and others. In order for the TBCPlus software to allow the video source to be comb filtered, the sync mode selector must be set to 'TV' more; otherwise the Digital Comb Filter will only operate in BandPass/LowPass and ByPass modes (also applicable to either VTR or TV sync modes). | ||
| Video Performance (-3dB Bandwidth) | 5.5MHz in Comb Active (NTSC) Mode 6MHz in Comb Active (PAL) Mode 6MHz in BandPass/LowPass Mode No reduction in ByPass mode NOTE: Luma bandwidth is -50dB down at 13.5MHz | |
| Environmental Information | Operating Temperature | +32°F (0°C) to +120°F (50°C) |
| Operating Humidity | 10% to 90% Non-Condensing | |
| Power Requirement | 100mA maximum @ 5VDC — derived from TBCPlus | |
| Board Type | Mini-Daughterboard, simple plug on board. | |