Functional Description
2.7VBI Data Processor
The TVP5147M1 VBI data processor (VDP) slices various data services like teletext (WST, NABTS), closed caption (CC), wide screen signaling (WSS), program delivery control (PDC), vertical interval time code (VITC), video program system (VPS), copy generation management system (CGMS) data, and electronic program guide (Gemstar) 1x/2x. Table 2−6 shows the supported VBI system.
These services are acquired by programming the VDP to enable the reception of one or more vertical blank interval (VBI) data standard(s) during the VBI. The VDP can be programmed on a
Table 2−6. Supported VBI System
VBI SYSTEM | STANDARD | LINE NUMBER | NUMBER OF BYTES |
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Teletext WST A | SECAM | 6−23 (Fields 1 and 2) | 38 |
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Teletext WST B | PAL | 6−22 (Fields 1 and 2) | 43 |
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Teletext NABTS C | NTSC | 10−21 (Fields 1 and 2) | 34 |
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Teletext NABTS D | 10−21 (Fields 1 and 2) | 35 | |
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Closed Caption | PAL | 22 (Fields 1 and 2) | 2 |
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Closed Caption | NTSC | 21 (Fields 1 and 2) | 2 |
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WSS | PAL | 23 (Fields 1 and 2) | 14 bits |
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NTSC | 20 (Fields 1 and 2) | 20 bits | |
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VITC | PAL | 6−22 | 9 |
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VITC | NTSC | 10−20 | 9 |
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VPS (PDC) | PAL | 16 | 13 |
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NTSC | 21 (Fields 1 and 2) | 2 | |
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Gemstar 1x | NTSC |
| 2 |
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Gemstar 2x | NTSC |
| 5 with frame byte |
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User | Any | Programmable | Programmable |
24 | TVP5147M1PFP |