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Topic:
IR codes for TVs
This thread has 1 response. Displaying all posts.
Post 1 made on Wednesday March 12, 2014 at 11:59
tycbox
Lurking Member
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March 2014
4
can someone please tell me if all tvs in one brand name use the same IR code? like all Samsung tvs use he the same codes doesn't matter if a 2008 tv or 2013 tv? they use the same IR code? or different Tv model use different IR codes? Thanks

Tyler
Post 2 made on Wednesday March 12, 2014 at 21:05
SysIntegration
Advanced Member
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December 2013
895
On March 12, 2014 at 11:59, tycbox said...
can someone please tell me if all tvs in one brand name use the same IR code? like all Samsung tvs use he the same codes doesn't matter if a 2008 tv or 2013 tv? they use the same IR code? or different Tv model use different IR codes? Thanks

Tyler

The short answer is maybe.

New IR codes require new boards and equipment in both the remote or TV or at least a new firmware or flash to both devices. It is easier and cheaper for manufactures to recycle codes. This is why I can pick up a Sharp TV remote from 4 years ago and use it to power on/off the new Sharp 4K TV.

The better question to ask is if the manufactures all use the same IR protocol and within that protocol the same device number.

For the most part, they do.  At least the major brand names do.  However, there are things that are done to cut corners.  Take the Sharp LE550 series.  It does not have any known discrete power commands, but the LE650 does respond to discrete power.  Why were these choices made?  We can only speculate.

Occasionally codes are "updated."  A "video 1" input command to a receiver from 5 years ago might work on a new receiver, but instead call the "dvd" input.  New commands are added as new features and input are added.  If a have an "HDMI 4" input command for a TV that is modern, an older TV might not respond to this command.  This doesn't mean the code changed, it might mean the older device didn't know what to do with the command.  (Imagine being handed an iphone in 2003).


Circling back around, the answer is again maybe, or one can hope.  I hope this helps. 
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