SAA5281 Description
SAA5281 The IVT1.8 is a single-chip Teletext decoder IC for decoding 625-line based World System Teletext transmissions. The device is based on IVT1.0VPS and has reception facilities for the 5 MHz biphase VPS signal. It is intended for use in video recorders, in particular to implement the VPT facility (VCR programming via Teletext).
SAA5281 Key Features
- plete Teletext and VPS decoding in a single package
- Built-in 8K × 8 memory for up to 8 page storage
- Enhanced mode allows 7 Fastext pages and 8 pages of TOP to be captured
- Ability to request only subtitle pages
- Acquisition and decoding of VPS data
- Data valid output available to indicate reception of error-free VPS or packet 8/30/2 data
- Software and hardware patible with SAA5246 and SAA5248
- Meshing display within boxes
- Separate data checking algorithms and pointers for each acquisition channel
- 24 : 18 Hamming checker