4-10 Product Principle
c) In order to decrease the distance between COME (CPU) module and SSD, the MSata is
on the carrier, and the carrier provides the power for SSD.
Extend the interface of COME (CPU) module; it can be applied for user interface or
communicating with other module. The extend interface module include:
a) Video extension. Through mother board, PC carrier board provides Video extension to the
main monitor, touch screen, IO board.
b) Audio distribution. Through mother board, PC carrier board provides Audio distribution to
speaker and IO interface board.
c) USB extend module. Through mother board, PC carrier board provides USB extension to
other modules and IO interface board.
d) SATA extend module.
e) PCIE distribution. COME distribute PCIE interface to other modules by PC carrier board
and mother board, such as WIFI module, engine board, GPU, Ethernet port.
f) Network interface;
g) I2C distribution
System monitoring function.
System resetting function.
System upgrade function.
Most of modules are coupled with user interaction unit, detail description is shown below.
4.3.4.1 Video Extension Function Specifications and Plans
The ultrasound system has following instantiated items on platform:
Primary display interface Mini HDMI, resolution 1920*1080.
Secondary display interface HDMI, resolution 1280*800.
The distribution image of the ultrasound system is shown in figure 10, and the description is as
follows:
The primary display and secondary display use DVI signal, communicate with PC carrier board
through DDC, and adjust the display parameter.
PC carrier board offers DDC channel. It communicates with VGA peripheral, HDMI peripheral.
Obtain peripheral resolution information, etc.
The signal between primary display and secondary display is transmitted through the cables
(lifting column).
The primary display uses Mini HDMI.
The secondary display use HDMI cable to transport DVI signal
The video signal of the peripheral is connected through board-to-board.
The changes of the video signal and the resolution can be realized by the multifunctional logic
of PC carrier board.
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