Video walls
Video walls and panel control from the CMS
impressBox controls the panels as well as the content: power, inputs, picture and brightness, over RS-232 and HDMI-CEC, and keeps a wall of screens playing in sync.
RS-232 panel console for daisy-chained panels
Panels daisy-chained over a serial cable, LG and others, are controlled from the CMS:
- Power on schedules
- Picture
- Sound
- White balance
- Tile geometry
- The panel clock
- OSD navigation with remote keys
Save an input “baseline” when the wall looks right, and impressBox restores it after every power-on. The panel reports its temperature, operating hours, firmware, signal and whether it stopped responding.
HDMI-CEC: know the TV is really on
The player reads the HDMI bus: the TV’s maker, name and power state. It switches the TV on and off, stays the active source and wakes a TV that fell into standby.
The device list shows an unplugged cable and the real TV state, so a panel that has been in standby for days no longer hides behind a player that reports “playing”.
Screens in sync, Samsung Tizen included
Players in a group play in sync. An impressBox player on the local network can act as the sync server, so Samsung Tizen displays sync too, with automatic failover to another server.
Groups come from device settings or tags. A Raspberry Pi can mirror one output to two HDMI ports.
Brightness that follows the sun
Backlight follows sunrise and sunset at each screen’s location, with time-point profiles, night limits and gradual transitions previewed as a curve in the CMS. Emergency content always stays readable.
On LED walls with a NovaStar Taurus controller, the Android player sets the wall’s real brightness.
Any resolution, LED strips included
Custom resolutions per account, such as 3840×1080 for an LED strip, with pad, crop or stretch, and the right variant picked per screen.
Panel control in plain language
Ask the AI agent what you would otherwise do with a remote control and a ladder.
“Is the TV in the meeting room really on?”
Reads the TV’s power state over HDMI-CEC, instead of trusting a player that reports “playing”.
“Make the window screens play in sync.”
Puts the players in one sync group, from their device settings or a tag.
“Let the Lobby screen’s brightness follow sunrise and sunset.”
Sets the backlight to follow the sun at the screen’s location, with gradual transitions.
Frequently asked questions
Which panels work over RS-232?
Panels daisy-chained over a serial cable, LG and others, are controlled from the CMS: power on schedules, picture, sound, white balance, tile geometry, the panel clock and OSD navigation.
Does sync work across different player types?
Players in a group play in sync, and Samsung Tizen displays are included: an impressBox player on the local network acts as the sync server, with automatic failover to another server. Groups come from device settings or tags.
Do I need special cables?
RS-232 control uses a serial cable, with the panels daisy-chained. HDMI-CEC control works over the HDMI connection between the player and the TV.
Can brightness follow opening hours instead of the sun?
Brightness follows sunrise and sunset at each screen’s location, and the curve can be shaped with time-point profiles and night limits, with gradual transitions previewed in the CMS. Emergency content always stays readable.
More on screens and panels
- Hardware controlControlling displays from impressBox.
- Remote field serviceLive view, network diagnostics and panel fault signals.
- LED monitoringKeeping an eye on LED screens.
- LED displaysimpressBox for LED screens.
- LG webOSimpressBox on LG panels.
- Samsung TizenimpressBox on Samsung displays.
- Raspberry PiimpressBox on Raspberry Pi players.
- AI AgentManage screens in plain language.
Plan your video wall with us
Tell us which panels you have and how they are connected. We show you how impressBox controls them and keeps the wall in sync.