Display Settings

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Contents

Introduction

"Display Settings" page of HMP Control Center allows configuring different settings related to

Display tab

This tab groups several options related to HMP video output signal mode configuration. Furthermore, the options available to the user change depending of the selected configuration type, i.e. "Simple", "Advanced" and "Custom".

Configuration: Simple

Display tab - Configuration: Simple

Allows selecting the HMP video output signal mode from a fixed number of common video modes, divided in three categories:

  • TV Screen (16:9)
    HMP130 / HMP100 : 480p @ 60Hz, 720p @ 50 / 60Hz.
    HMP200 : 720p @ 50 / 60Hz, 1080p @ 50 / 60Hz.
  • Computer Monitor (4:3)
    HMP130 / HMP100 : VGA 640x480, SVGA 800x600, XGA 1024x768.
    HMP200 : VGA 640x480, XGA 1024x768, SXGA+ 1400x1050.
  • Wide Computer Monitor (16:10)
    HMP130 / HMP100 : WVGA 768x480, WSVGA 1024x640.
    HMP200 : WXGA 1280x800, WSXGA+ 1680x1050.

In case the resolution selected does not match the aspect ration of your screen, a different aspect ratio can be enforced by enabling the "Force aspect ratio to" option and selecting a different aspect ration between 4:3, 16:9 or 16:10.

Also, the HMP video output signal can be rotated or flipped to match the screen orientation - this is done by selecting a value for the "Screen orientation" option between:

  • "Horizontal" (default value),
  • "Rotate 90 Right", "Rotate 90 Left", "Rotate 180",
  • "Flip Vertical", "Flip Horizontal".

Configuration: Advanced

Display tab - Configuration: Advanced

Allows selecting the HMP video output signal mode (as resolution@refresh_rate) from either the "Standard modes" set (provided by the HMP) or the "Screen modes" set (provided by the screen).

The aspect ratio of the output signal ("Default aspect ratio") and the orientation ("Screen orientation") can also be configured. (See more details above.)

The "HDMI display supports underscan" option enables / disables the underscan feature for HDMI connections.

  • The HMP supports underscan for HDMI connection, meaning that all pixels of the image are displayed by the screen, which is standard behavior for computer monitors as opposed to consumer televisions. This feature does not affect connections using VGA or DVI.

To save the selected settings, first press the "Check" button (the HMP will verify that the video output signal is valid) and then press the "Apply" button.

Configuration: Custom

Allows setting custom resolutions for non-standard screens. See the Advanced display settings page for more details.

Power Save tab

Control Center - Power Save

This tab groups options related to power management configuration.

Display Power Save

Device Power Save

  • VGA output enable
    Set the detection of a display connected via VGA (this is useful for VGA power saving). Possible values are:
    • Automatic - VGA signal is enabled / disabled depending on the Display Data Channel (DDC) signal. This is the default value.
    • Always On - VGA signal is always sent.
    • Always Off - VGA signal is never sent.

Interactivity tab

Interactivity tab

This tab groups several options related to event-triggered interactivity configuration.

Interactivity Settings

  • Enable events
    Enable / disable interactive event processing. Default: disabled.
  • Reduce latency to 60ms when events are received
    Enable / disable interactivity boost. Default: enabled.
  • Support large number of USB devices
    Enable / disable the USB software emulation for supporting a greater number of USB devices; when disabled, the number of supported USB endpoints is limited to 3. When mixing full or low-speed devices with high-speed hubs this option should be disabled for compatibility. Default: enabled.
    For interactive projects is usually better to disable this option.

Touchscreen Calibration

See also MultiTouch support section.

Many touchscreens (or other input devices reporting absolute coordinates) are usually already calibrated and require no further configuration to be used. If you notice that the touchscreen is not working properly or it's not very accurate, then you should run the touchscreen calibration procedure:

  1. Connect the HID-compliant touchscreen device to the HMP via the USB port.
  2. Open HMP Control Center > Display Settings page and select the Interactivity tab.
  3. Ensure that the "Enable events" option is checked, otherwise enable this option and restart the HMP.
  4. On the same page, press the "Start Calibration Procedure" button and follow the instructions displayed on the touchscreen.
  5. After this, the calibration offset values will be automatically added into the corresponding fields (unless a password is set for HMP Control Center, in which case you need to note the values displayed by the calibration tool and enter them manually on the Interactivity tab).
  6. Press the "Apply" button.

Splash Screen tab

Splash Screen tab

This tab groups the options related to the splash screen images shown by the HMP during booting, shutting down or firmware update sequences.

To change one of these images, simply upload the file(s) from your computer and press the "Apply" button.

  • The images used should be JPEG or PNG with a recommended size of 640x480 pixels. They can have a bigger resolution, as long as the total file size does not exceed 1 MiB.
  • If the dimensions of the new image are not the default ones (640x480 pixels), the image might not be displayed entirely because there's no scaling of the image (it's only centred). This is important especially in the case of Boot splash screen.
    • For instance, let's say you have set a 1920x1080 px image as boot splash screen and 1080p as display resolution. When the player boots, the display resolution is firstly set to the 640x480 and therefore the splash screen will be a cropped area of 640x480 pixels from the original image (relatively to its center). This will be displayed on the entire screen (probably stretched). Only after the display resolution is set to 1080p, the entire image will be shown.

Use the "Reset" button to revert to the default splash screen images.

Advanced tab

Advanced tab

This tab groups audio and advanced signal related options.

  • Audio
    Activate or deactivate the audio output signal using the "Enable audio output" check-box option.
  • HDMI signal
    Set the "Overscan percentage" value between 0 and 5.
    This allows choosing the size (in percentages) of the black frame added by the HMP to compensate for the overscan of the HDMI-connected screen. It has an effect only when "HDMI display supports underscan" option is disabled.
    Set the "HDMI link type" between "Automatic" (default value), "HDMI" and "DVI".
  • VGA signal
    Activate or deactivate the DC offset support using the "VGA display supports DC offset" check-box option.
    Starting with 2.2.4 firmware, the VGA output in all HMP models has a DC voltage offset in the RGB signals by default. This improves the quality of the black levels and is compatible with the vast majority of displays. If a display or repeater does not support this voltage offset (i.e. the image appears as overexposed), then you need to disable this option.