Synoptic Microphone Control Bmp Import - Bosch DCN Manual

External Interface Manual
7

Synoptic Microphone Control BMP import

In the Synoptic Microphone Control DCN application, it is possible to import a BMP image to use as a
background for the synoptic display. An example of this could be displaying a floorplan of the congress hall on
screen. The DCN uses all imported BMP images from the "bitmap" sub-directory of the DCN directory. If you
want to remove a BMP image from a Synoptic Microphone Control layout without having to delete the layout
and start a new you can simply delete the BMP file from the bitmap-directory manually. This can only be done
when the DCN software is NOT running.
Any standard Windows BMP image-file can be used but the following restrictions apply:
• Images larger than 1280 x 1280 pixels will be clipped at the right and/or bottom border to fit into
the display.
• If there is not enough memory to load the entire image it is truncated at the bottom border.
• Images that are not compatible with the Windows video-driver in use will not be loaded. (This is a
restriction of Windows itself.) In some cases Windows will automatically convert the BMP file to a
convenient format, although that may degrade the quality of the image. Refer to table 1 to see
which BMP formats can be used with a given video-driver.
Table 1: Video-driver and BMP depth relations
Video-driver
16 colors
256 colors
More than 256
colors
Note: Using so-called 24 bit (16.8 million color) BMP files requires a lot of computer memory which
decreases computer performance. Therefore using very large (above 800 x 600 pixels) 24 bit BMP files
is only recommended if the computer has at least 16 MB of memory.
Table 2: Typical memory use
Image size (typical
dimensions)
640 x 480 pixels
800 x 600 pixels
1024 x 768 pixels
Note: When using MPC, the client PC will use the BMP file with the same name as the master in the
"Bitmap" subdirectory.
Note: BMP files cannot be rotated. The layout itself can be rotated.
Bosch Security Systems B.V. | 2004 April | External Interface Manual
16 color BMP 256 color BMP
Supported Automatic
conversion
Supported Supported
Supported Supported
Memory 256 color
image
0.3 MB
0.5 MB
0.8 MB
16.8 million color BMP
Not supported by Windows 3.x.
Automatic conversion on Windows
95/98
Not supported by Windows 3.x.
Automatic conversion on Windows
95/98
Supported
Memory 24 bit
image
0.9 Mb
1.5 MB
2.4 MB
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