Brian J. Murrell (v4l@xxxxxxxxxxxxxxx):
> > Regardless, hauppauge.com shows the retail price of the PVR card is
> > only $240 USD, and it can do full D1 at 12Mbps.
>
> On a related note. What is the difference between full D1 and half
> D1? What does D1 refer to?
I can't find an authoritative reference, but you see these names when
referring to digital sampling of video signals:
D1 704 x 480
half-D1 352 x 480
SIF 352 x 240
QSIF 176 x 120
square pixel QSIF 160 x 120
Sometimes when they say full D1 they also mention they can do 720x480
too. Maybe full D1 means 720x480 but I'm pretty sure it's just 704x480
and goes with the SIF/QSIF terminology. The 704 active samples are
found by taking the full 720 and stripping the first and last 8 samples.
The implication is that the ones with 480 scanlines are interlaced and
contain two fields, and field order must be specified elsewhere.
--
Billy Biggs
vektor@xxxxxxxxxxxx
