* slicer line count of 1, at D lines after the deassertion of VRESET.
* This staring field line, S, is 6 (& 319) or 10 (& 273) for 625 or 525
* line systems respectively. Sliced ancillary data captured on VBI
* slicer line count of 1, at D lines after the deassertion of VRESET.
* This staring field line, S, is 6 (& 319) or 10 (& 273) for 625 or 525
* line systems respectively. Sliced ancillary data captured on VBI