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Device
What are the major system components?
There are two major “brains” in the system as described in the table below.
• Produces the image on the LCD display.
• Provides an audio/video connection path
to/from the compute module.
• Provides video scaling to support external
video sources.
• Performs color correction and calibration.
• Responsible for power management,
including occupancy sensors and device
power states.
• Monitors and manages all thermal sensors
throughout the device.
• Performs internal diagnostics.
• Captures diagnostics, error logs and
telemetry for all components not
connected to the compute module.
• Controls the behavior of keypad buttons.
• Provides an on-screen display for control
of video source, brightness, and volume.
• Connects to and controls all USB devices.
• Provides videoboard interconnections for
USB, DisplayPort, HDMI, PCIe.
• Provides Ethernet access via wired and
wireless interfaces.
• Provides the on-screen audio/video
content.
• Ingests audio/video provided by external
sources.
• Allows video to be passed directly to the
videoboard (bypassing the ingest process)
for scenarios in which an external source
is HDCP encrypted or is beyond the
capability of the ingest subsystem.
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