signal path into the processor could be band
section May 4, 1999.
would exist individually for each rate. It
Luminance bandwidth of the entire com-
cessors that would convert the incoming
have to be included.
site: www.WidescreenReview.com "Commentary"
connection on the back of the set.
Monitors that are 32-inches wide or small-
cations for these categories would include
in 10 CIELUV, with a resolution of less than
would be multiple aspect ratio capability, it
Gray scale tracking would have to be with-
In a direct view set, it is our experience that
magnetically focused CRT projector would
posite 75 ohm BNC for NTSC and PAL, an
be fed to the 480p matrix decoder.
two component and two RGB connections.
ature memory would be selectable from the
letterboxed, a linear 1.78:1 image; letterboxed
8/15/08
and 720p rates. Memories for each would
1 CIELUV at the calibration points.
foot-Lamberts as the screen width approached
be required for this task. While we've seen
specified by SMPTE. We would encourage
have to contain individual information for
two choices for gray scale, each of which
ory for aspect ratios. We would require good
limited to 7.0 MHz for luminance and 3.5
larger screens. Measurements would be made
being generated all of the time.
Input and processing requirements of
selects a particular input, the correct color
over a 60° angle from the center of the picture.
video display. A requirement for this type of
Light output capability would be placed
are now being created in the graphics indus-
entiate between the 480 interlace and pro-
the ringing in the picture caused by the short
ty of geometry and convergence, but need
could be to any rate between 480p and 768p.
although we would not expect the display
brightness, contrast, color temperature, and
gressive rates from the higher rates, the 480i
alone the 2K by 2K or 4K by 3K images that
include 1080i, which is just above 480p.
to a progressive signal, were done in the
signal to the display configuration of the
We mentioned this in the article. We don't
and a 1.78:1 image edge-to-edge of the
The set would contain full multiple aspect
divided into one for the BNC connectors and
Separate setup for brightness, contrast,
decode capability for both 480 interlace and
Horizontal resolution across the width of
The set would contain an internal signal
played with were designed for high-resolution
the picture. Flat field uniformity would be
temperature will also be selected. We will
ratio capability. We would insist on four, but
to convey that they would be tight.
geometry, blanking and gray scale controls
EDTV. We would extend the higher scan rate
rate. Second or third generation of specifi-
out to at least 80 MHz.
requiring it in the second generation.
ing signals to the specific rate required by
lines for a 27-inch wide screen size set and
raster, sometimes known as the anamorphic
proper selection of the decode matrix.
The converter would be required to recognize
the display.
to be color accurate. We would require at least
The Archives
progressive signals and the higher rates as
format. It's this 1.78:1 edge to edge position
Light output capability of 25 foot-Lamberts
It is our feeling that, down the road, ID and
Input connections would include a com-
er would provide 25 foot-Lamberts of light
1.33:1 image, a linear 1.66:1 aspect ratio;
in the order of 1500 lines.
The two RGB input connections could be
to a particular input in the first generation,
Display quality for color uniformity would
available. It needs to have a range that could
HDTV -- High
72 inches. The 12 CIELUV and 45 percent
out to 40 MHz, ± 0.5 dB. Pb and Pr response
would also exist individually for each input
ED sets will only scan at a single progressive
device to fully resolve the horizontal bandwidth
Page 11
The red, green, and blue colors of the
etry and convergence were tight for the EDTV
ponent video calibration. An ability to display
The set would have to contain a matrix
The NTSC and S-video decoder would have
would be flat to 20 MHz ± 0.5 dB. If a fre-
easily reach 5400° Kelvin. The color temper-
sync on five 75ohm BNCs, plus a VGA-type
would encourage a 3D adaptive comb filter.
a second at the VGA connection.
ed in geometry? Certainly height and width
Definition Television
WSRnewsletter27 v2.qxp:#88 Reber HD Wars v3GRTL
SMPTE C colors.
Colors for red, green and blue to approach
an internal scaler that would convert incom-
separate vertical linearity memory would be
Separate memories would have to be pro-
connection. We would encourage at least
of 1920 lines across the full width of the screen.
1:50 PM
decode matrix. The circuits might be kept
quency detection method is used to differ-
approach 1200 lines in a 72-inch wide image.
output prior to any noticeable blooming in
Version 1.0, March 26, 1999, posted on Webzine
temperature, any of which can be assigned
HDTV Plus:
S-video connector, a component input on
that would most likely be used for the 1080i
necessary for the two display aspect ratios.
retrace time of the 1080i signal.
at 10 foot-Lamberts for a 72-inch wide screen
within 12 CIELUV for color and no more than
such projectors, none of them that we've
the screen would have to be at least 800
could be individually calibrated and assigned
category, just wait until you see what we
qualification would now have to have pro-
EDTV -- Extended
vided for each input rate. As much as there
the picture, both horizontally and vertically.
11
Fixed array display devices entering this
front panel. It needs to be assigned to indi-
come up with for this category.
input bandwidth flat out to 50 MHz, encour-
Light output could drop to as low as 10
choice of color temperature must be made
geometry setup for a 1.33:1 picture in the
signal would not be band limited, as is option-
We don't yet know the numbers for quali-
device. Processor quality specifications would
If you thought the specifications for geom-
encourage at least four memories for color
with no visible blooming in the image.
luminance. These measurements would be
Definition Television
processor for 480i source signals. Conversion
plus any other controls needed to insure
cation also applies to 1080i and 1080p.)
Careful attention would have to be paid to
specifications for 720p. (That same specifi-
reasonable geometry at each aspect ratio.
fall-off specification would still apply to the
480p and run up to 768p. That range would
45 percent fall-off from center to edge in
aging and internal RGB bandwidth to be flat
The shape of the picture would be 1.78:1
two-third pull-down in film original material.
would be within 30 percent.
al for the 480i input, but sent to the proper
Scan rate capability would include 1080p
for each displayed aspect ratio. Minimum of
FROM
now have many display devices that can truly
to particular memories. What would be includ-
In the initial stages of specifying this set,
three 75 ohm BNCs, and RGB plus Hand V
vidual input memories so that when the user
WIDESCREEN REVIEW NEWSLETTER 27
we would call for a multi-scan capability in
parallel the EDTV set. Luminance uniformity
MHz for the two color channels. The 480p
center of the 1.78:1 display, an overscanned
Horizontal resolution would be specified
ponent and RGB path would have to be flat
checked over a 60° angle from the center of
encourage a minimum of six options of mem-
CRT-based display devices. It would start at
display would closely conform to SMPTE
simple if the line processor, converting 480i
automatic detection of the input rate for the
blue only for NTSC decoder calibration.
a high quality 2D adaptive comb filter and
show off the capability of a 1080p signal, let
picture shape and geometry.
An ability to shut Pb and Pr off for com-
display is here now because the signals are
without blooming.
component domain. The output could then
try. It is our feeling that a 12-inch electro-
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