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VBI TBC(Teletext Broadcast Card) can be used to insert Teletext data into Vertical Blank Interval of TV signal in real time. Up to 16 data packet can be inserted in to TV signal simultaneously. The Teletext data and dynamic broadcast data can be updated via network. The system is conform to GB/T14219-93 and WST. Data bridge is not necessary normally because of the high quality of inserter. Automatic video bypass is active on power failure.
ZowieTek VBI TBC can process all network communication, data convert and real-time data insertion. It provides a flexible platform via network. For example, the stock information can be received from satellite, converted and broadcasted. Each part work on the same PC or different PC. This system is now widely used in many TV and CATV network.
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ISA bus, PC104 compatible |
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Multi-Lines capability, 16H VBI data lines optional |
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Power down pass-through without delay |
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CPLD ISA Interface and Black Field generator |
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Plug and Play, no jumper |
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Driver for DOS, Windows 98/Me |
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VBI
Data |
Video |
PAL TV System |
| Standard |
WST, CCST |
| VBI Lines |
7-22H/320-335H |
| Clock Run-in |
10101010 10101010 |
| Frame Code |
11100100 optional |
| Data Timing |
<10.5us+/-2Tc(Tc=144ns) |
| Data Shaping |
70% Rolling Cosine |
| Data Encoding |
NRZ |
| Error Correction |
(8,4)Hamming, (24,18)Hamming |
| Bit Rate |
6.9375Mbis/s +/- 25ppm |
| Data Level |
70+/-10 White level |
| DG* |
<0.5% |
| DP* |
<0.3DEG |
| SNR* |
>70db |
| Chrome/Luma Delay* |
<10ns |
| Chrome/Luma* |
<0.2% |
| Frequency Response* |
<0.2%(5.5MHz) |
| * |
No guarantee |
Interface |
PC |
ISA bus |
| Video Input |
CVBS, 1Vpp, 75ohm, BNC |
| Video Output |
CVBS, 1Vpp, 75ohm, BNC |
Physical |
Dimension |
123x106x22mm |
| Weight |
250g |
Software |
Driver |
Dos/Windows 98/Me |
| SDK |
Interface Specification |
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