Studio Technologies 5150 V.2 - Manual (Page 23)

Model 5150 User Guide Issue 3, September 2013
Studio Technologies, Inc. Page 23
Model 5150
Video Generator Module
to be an issue for displaying them success-
fully with most personal-computer pro-
grams. This is most likely due to the PC’s
large code space allowing essentially all the
possible header types to be supported. But
the Model 5150, due to its target applica-
tion, has limitations in the file support area.
(For additional background information,
please refer to the Wikipedia online entry
that discusses the structure of .bmp files.)
A compatible 1280 x 720 (“720”) .bmp file
created using Microsoft Paint or Adobe
Photoshop will have a size of approximately
2.63 MB; a 1920 x 1080 (“1080”) .bmp file
will have a size of approximately 5.63 MB.
The actual size of the files when created
in Microsoft Paint should be 2,764,854
bytes and 6,220,854 bytes, respectively.
When created in Adobe Photoshop, the
file sizes should be 2,764,856 bytes and
6,220,856 bytes, respectively. (Why are
they each two bytes in size different? Who
knows! But both use the appropriate
BITMAPINFOHEADER DIB type.)
Bitmap Image Update
Procedure
It’s expected that the Model 5150’s bitmap
(.bmp) files associated with the custom
“720” and “1080” images will always be
updated to best serve specific applications.
This will typically take place soon after a
Model 5150 has been installed. (While the
pre-loaded images are nice, they aren’t
really appropriate for actual active applica-
tions.) There’s no problem changing the
files whenever the application warrants
alternate images. The module has the abil-
ity to automatically load revised files by way
of its USB interface. The Model 5150 imple-
ments a USB host function that directly
supports connection of a USB flash drive.
Updating the Model 5150’s “720” and
“1080” images is quite simple but requires
some care. The process begins by pre-
paring a USB flash drive. The flash drive
doesn’t have to be empty (blank) but must
be in the personal-computer-standard
FAT32 format. Save the new image (.bmp)
files in the root directory. Their names
must be img720.bmp and img1080.bmp.
Typically both .bmp files will be updated at
the same time. But there’s no requirement
to do so. Individual files can be updated
whenever desired. Simply copy the desired
file or files to the root directly on the USB
flash drive. Be certain that there are no
Model 5150 firmware files (m5150.s19 and
m5150.bit) present on the USB flash drive
during this process.
As previously reviewed in this guide, the
1280 x 720 image must have a file name of
img720.bmp; the 1920 x 1080 image must
have a file name of
img1080.bmp. Also
ensure that both have the DIB header type
BITMAPINFOHEADER so that they can be
recognized correctly by the Model 5150.
To install the new image files:
1. Power down the Model 5150 module.
2. Insert the prepared USB flash drive into
the module’s USB port.
3. Apply power to the module.
4. The module will go through its power-
up LED sequence and normal opera-
tion will begin. At about the same time
that normal operation starts the new
.bmp files will begin to load, one after
the other. The USB Activity LED on the
module’s front panel will flash while the
loading process is taking place. Load-
ing both .bmp files will take approxi-
mately 6.5 minutes. (Loading only the