Operation
Without PALplus, a 16:9 presentation has only 432 lines of vertical resolution. This reproduces noticeably less detail than the 576 lines used for 4:3 broadcasts. A fully decoded PALplus broadcast restores the 576 line vertical resolution. For compatibility reasons, the horizontal bandwidth remains at 5.0 MHz. This means a PALplus signal provides no extra horizontal resolution to compensate for the image being stretched across a wider screen. The result is a horizontal resolution that is 73% of the vertical resolution, or 51% when the Kell factor is ignored.
The PALplus standard comprises three extensions to standard PAL:
Read more about this topic: PALplus
Famous quotes containing the word operation:
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—Henri Bergson (1859–1941)
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—Francis Bacon (1560–1626)