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vickyg2003 Site Admin
Joined: 20 Mar 2004 Posts: 7073 Location: Florida |
Posted: Thu Feb 25, 2016 8:36 pm Post subject: OT- HDMI CEC |
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Hi guys, somewhat off topic. I've seen CEC mentioned several times in this forum.
Our condo association has a clubhouse with two large TV's connected via a 5x2 iogear matrix. The xfinity HD cablebox, and DVD player and other equipment is set up in a locked room, but there is some sort of ir dongle on the wall by the main TV. I was only allowed access to the Sony Bravia Remote control, not the comcast remote. I was told that the sony remote should take care of the channel changing on the xfinity box. Which it didn't. I had to go get the staff to get a key and enter the out of bounds AV room, to change the channel with the comcast remote.
The CEC to turn on the xfinity box is definately working. Should a Sony TV remote be able to somehow force the comcast box to change channels? Or did the keeper of the keys totally misunderstand what her professional installer told her?
If the TV really is supposed to control changing the channel, what needs to be done at the TV level, and would I need access to the xfinity box?
And BTW which comcast codes tend to be for the HD xfinity boxes? _________________ Remember to provide feedback to let us know how the problem was solved and share your upgrades.
Tip: When creating an upgrade, always include ALL functions from the oem remote, even if you never plan on assigning them to a button. Complete function lists makes an upgrade more helpful to others.
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The Robman Site Owner
Joined: 01 Aug 2003 Posts: 21234 Location: Chicago, IL |
Posted: Thu Feb 25, 2016 9:06 pm Post subject: |
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I don't know anything about CEC, so I Googled it and found this quote from graham...
re: http://www.hifi-remote.com/forums/viewtopic.php?p=96450
mathdon wrote: | I understand that Sony equipment, however, is deliberately crippled so that HDMI-CEC only works with other Sony equipment. Hence no Sony in my setup. |
_________________ Rob
www.hifi-remote.com
Please don't PM me with remote questions, post them in the forums so all the experts can help! |
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mdavej Expert
Joined: 08 Oct 2003 Posts: 4501
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Posted: Thu Feb 25, 2016 9:32 pm Post subject: |
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On most devices, CEC is limited to power and input commands. For example, turning on a CEC enabled cable box or disc player would send power and input commands to other devices in the chain, so all end up powered on and on the correct input to see that device. I've never heard of any cable boxes with any more than this, no channels, no transport controls. So Vicky, there is no possibility channel commands would be relayed to your cable boxes.
If you look at a fairly complete sony TV upgrade, you'll see a set of BS (Bravia Sync) commands. These are all CEC. So if you send a BS-Play command to the TV, it gets relayed over HDMI to a connected disc player. I've used these extensively with disc players and game consoles. Those kinds of devices typically implement many more CEC commands. |
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vickyg2003 Site Admin
Joined: 20 Mar 2004 Posts: 7073 Location: Florida |
Posted: Thu Feb 25, 2016 10:03 pm Post subject: |
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mdavej wrote: | So Vicky, there is no possibility channel commands would be relayed to your cable boxes.
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Thank you so much. I was under the impression that the keeper of the keys was wrong. She was told we'd only need the one remote, which I'll dare bet was the Comcast remote! But when you are an "inmate" at a condo association, you are not supposed to know anything!, lol. |
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