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