Ultech Corporation DV2000 User Manual page 35

does not take into consideration the fact that the image raster on televisions is overscanned.
So a portion of the image will be "cut-off" if it is placed at the very edges of the image
raster. DV2000 has a built-in safe title area generator to help you locate images in a location
that will be visible on consumer television sets.
Details of the UYC File Format
All data contained in a UYC file is organized into words (unsigned 16 bit) with the low
(least significant) byte first (Intel format). The first 16 entries (words) in a UYC file is
defined as the header section. The header section contains image information such as width,
height, etc. The remainder of the file is the image data section, and it contains three words of
image data for each pixel pair (see introduction). The image data is arranged into lines to
facilitate faster transfer to the DV2000. Each line of image data consists of a line of Y data,
a line of C data, and a line of alpha data.
Header Section
Word
Signature 0, 1 These two words are used by the DV2000 to indicate that this file is a UYC
Version
X Size
Y Size
Compression
Note that X size must be even to conform to word boundaries. Graphic file converters, when
converting a file with an odd width, should add a column of pixels to the right side of the
picture and set the alpha values for these pixels to 0 (transparent).
Description
0 Signature 0
1 Signature 1
2 Version
3 X size (image width)
4 Y size (image height)
5 Compression type
6 - 15 Reserved for future use
file. The words are arranged so that when a UYC file is viewed with a hex
editor the first four bytes appear as "UYC<space>".
This entry indicates the version of the UYC file.
This entry indicates the width of the image in pixels. NOTE that this param-
eter MUST be an even number to conform to the pixel pair organization
described in the introduction.
This entry indicates the height of the image in pixels (or lines). NOTE that
the DV2000 can display up to 479 lines of image data in NTSC format and
up to 512 lines of image data in PAL format (see DV2000 Image Position-
ing).
This entry indicates if the image data has been compressed and which type
of compression was used. Currently the only valid values are 0 for no
compression and 1 for RLE compression (see UYC RLE Compression).
5. Files
Value
0x5955 ("YU")
0x2043 (" C")
0x0100 (1.00)
0-0x02D0 (0-720)
0-0x0200 (0-512)
0-1
(always zero)
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