Created by: Marko Laurits on 27-10-2009 02:10:50 PM Hello,
If you connect a LCD-TV to Tandberg MXP by VGA cable then standby signal goes from Tandberg to the TV-set. When Tandberg goes asleep, the TV-set does it as well. The same with waking up. So, you don't need the remote of the TV-set on the table.
Would the same be possible with digital video signal? When I connect Tandberg to HDMI input of TV, picture quality may be slightly better but the TV does not go to standby mode. So you need a separate remote on the table to switch TV on and off. Or can you recommend models that have this possibility? I have tried Samsung, Sony and Philips TV-s without success.
I understand that Tandberg C60 Profile uses HDMI output and you don't need separate remote for the TV. How did you solve the sleep problem?
Thanks!
Marko
Subject: RE: Monitor standby via DVI/HDMI Replied by: Roger Boe on 27-10-2009 03:00:29 PM Hi Marko,
HDMI doesn't use the VESA power management standard. Instead they have implemented CEC (Consumer Electronics Control). CEC would allow you to do this against monitors supporting this. TANDBERG has not implemented CEC in our HDMI implementation. This is something we might do in the future. The monitors used for the Profiles are TANDBERG monitors, these are designed to go into standby when no signal is present on the HDMI input. So when the codec goes into standby we turn off the HDMI transmitter and hence the monitor goes into standby.
Cheers Roger
Subject: RE: Monitor standby via DVI/HDMI Replied by: Marko Laurits on 03-11-2009 05:29:12 PM Thanks for the detailed answer!
You said that there is a slight possibility that CEC may be implemented in future. Would the implementation require new hardware or could it be done in software?
I wonder that if you can't switch off most monitors via HDMI why didn't you put DVI-I output for both monitors at C60?
How did you solve the sleep problem at MXP profiles? I understand that typical Nec / Samsung displays are used there?
Subject: RE: Monitor standby via DVI/HDMI Replied by: Roger Boe on 03-11-2009 08:38:24 PM Hi Marko,
Marko Laurits:
Thanks for the detailed answer!
You said that there is a slight possibility that CEC may be implemented in future. Would the implementation require new hardware or could it be done in software?
It's just software
Marko Laurits:
I wonder that if you can't switch off most monitors via HDMI why didn't you put DVI-I output for both monitors at C60?
It wouldn't help as new monitors normally is only equipped with HDMI. DVI is not common anymore on consumer equipment.
Marko Laurits:
How did you solve the sleep problem at MXP profiles? I understand that typical Nec / Samsung displays are used there?
These monitors used DVI inputs and hence the Digital Power Management standard was used to put them to sleep.
Best regards Roger
Subject: RE: Monitor standby via DVI/HDMI Replied by: Marko Laurits on 19-05-2010 03:57:40 PM Hello again,
I have meanwhile read www.hdmi.org and some other resources. Hdmi.org says that HDMI is fully compatible with DVI. As it turns out, it is completely wrong as HDMI does not support power management. This not important only for videoconference but also for meeting rooms where projectors are replaced with TVs. When users switch from VGA to DVI output / HDMI input, they expect the TV-set to go asleep as it does for VGA. But it does not.
If I understand correctly, DVI power management is technically quite simple: TDMS is switched off and +5 V stays on. CEC is far more complicated. Therefore I wonder why TV manufacturers don't support VESA power management at HDMI. Having such option should not make the interface incompatible with HDMI standard.
Subject: DPMS supported on HDMI by some manufacturers Replied by: Enrico Conedera on 27-05-2010 06:34:47 PM The folks at Tandberg in Reston who develop custom vertical products - the Solutions Group - have found that *some* LCD panels support DPMS on the HDMI input.
Commercial LCD, not consumer Manufacturers: LG, NEC, Samsung
This is, of course, subject to change. But customers have told me they are able to verify DPMS in the specifications when looking at these brands. Again, has to be a commercial-grade LCD.
Subject: RE: DPMS supported on HDMI by some manufacturers Replied by: Jeevan Varughese on 02-06-2010 06:52:51 PM Hi Rico,
Firstly, thanks for putting together the video demoing the video compositing software, was very helpful for some of my clients.
Do you know if any specific models for the monitors that support VESA DPMS on the HDMI Inputs?
I have looked at a few LG Commercial units but they all seem to use CEC (something called simple-link).
If you could post some specific models of the samsung, LG or NEC when made avaialable by the solutions group would be greatly appreciated.
Thanks
Jeevan
Subject: RE: Monitor standby via DVI/HDMI Replied by: Jimmy Heyes on 25-05-2011 02:24:43 PM Hi Roger Has there been any developments on this ?? I have connected a C40 to an LG Consumer screen and it does not wake up. Thanks Jimmy
Subject: RE: Monitor standby via DVI/HDMI Replied by: Justin Ferello on 21-07-2011 09:17:17 PM FYI, TC4.2 was released today and it now supports CEC!
Support for CEC (Consumer Electronics Control) The HDMI outputs now support Consumer Electronics Control (CEC). When set to on (default is off), and the monitor connected to the HDMI output is CEC compatible and CEC is configured, the system will use CEC to set the monitor in standby when the system enters standby. Likewise the system will wake up the monitor when the system wakes up from standby. Please note that the different manufacturers uses different marketing names for CEC: Anynet+ (Samsung); Aquos Link (Sharp); BRAVIA Sync (Sony); HDMI-CEC (Hitachi); Kuro Link (Pioneer); CE-Link and Regza Link (Toshiba); RIHD (Remote Interactive over HDMI) (Onkyo); SimpLink (LG); HDAVI Control, EZ-Sync, VIERA Link (Panasonic); EasyLink (Philips); and NetCommand for HDMI (Mitsubishi).
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