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How do I convert these Hexcodes? Please help...
This thread has 10 replies. Displaying all posts.
Post 1 made on Thursday August 11, 2005 at 22:19
KAS1
Lurking Member
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6
Is it possible to covert the hexcode information for the Infocus TVs in this document:

[Link: infocus.com]

to work with my TSU2000?

Thanks

This message was edited by KAS1 on 08/12/05 08:17 ET.
Post 2 made on Friday August 12, 2005 at 10:09
Lyndel McGee
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How about posting the Power Toggle Code data learned from the remote here and then we can make sense of the protocol and give you a bit more information.
Lyndel McGee
Philips Pronto Addict/Beta Tester
Post 3 made on Friday August 12, 2005 at 13:25
johnsfine
IR Expert
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Usually we would need to see a learned signal example in order to interpret the typical incomplete data in a pdf like this. But in this case there are enough hints.

It is RCA protocol with all the bits documented inverted.

For example it says On-Off is 0D5. Invert 0D5 to F2A, which is the standard RCA TV code of F and the standard RCA power toggle command of 2A.

Note the various mentions of RCA within that PDF file. That's a hint.

Note the pattern of one hex digit for device plus two hex digits for command. That fits RCA.

Note the description of the discrete On of other devices as descrete input selects for this device. That's RCA. Note the C5 command part of all of those inverts to 3A, which is the standard RCA discrete On command.

So Lyndel, if you still want the learned code for power toggle, get it from almost any RCA TV.

Kas1, you can get almost all these commands from any decent CCF for an RCA TV. If you understood what I said in this post you could use MakeHex to generate all these signals easily. If you don't understand, try a CCF for an RCA TV first and get almost all you need. Then tell us which few commands were missing and someone will post them to this thread.

This message was edited by johnsfine on 08/12/05 13:35 ET.
OP | Post 4 made on Friday August 12, 2005 at 13:42
KAS1
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I will try to post the learned codes as soon as I get the TV. It should be here sometime next week, so I thought I might be able to get the remote set up for it in advance. I do know that they make one of RCA's DLP TVs, but I am not that experienced in this stuff, so I don't quite understand what to do with info in John's post. Thanks again for any help and I will be sure to post a few of the learned codes as soon as it arrives.
Post 5 made on Friday August 12, 2005 at 14:18
johnsfine
IR Expert
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On 08/12/05 13:42 ET, KAS1 said...
I will try to post the learned codes as soon as
I get the TV.

Unless that pdf is seriously wrong, we don't need that.

I thought I might be able to get the
remote set up for it in advance.

Good idea. Are you making the graphics yourself or copying some other CCF, or what?

they make one of RCA's DLP TVs,

Don't worry about "DLP". RCA codes are very consistent across a much wider range of models.

I don't quite understand
what to do with info in John's post.

The thing to do first is to grab at least one CCF file that has good support for an RCA TV.

1) Look at it for design ideas.
2) Copy most of the IR signals from it.

Do you know how to copy a device and/or collection of IR signals from one CCF to another? It's a skill worth learning.

I did a crude scan of a bunch of CCFs with RCA TV codes. The one with the best organised set of codes seems to be
[Link: remotecentral.com]
Surprisingly that description page doesn't even list a TV. But when you open the CCF you'll see a nice set of commands for an RCA TV.
Post 6 made on Friday August 12, 2005 at 14:23
johnsfine
IR Expert
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5,159
BTW, that pdf tells you how to change that TV to use a different RCA device code in case you have two or three TV's within IR range of each other all using RCA signals.

If you need to do that, forget about finding RCA TV CCF file and go straight to using MakeHex.

If you like, go straight to using MakeHex to begin with. I didn't explain its use in this thread, but I and others have explained it in many other threads.
OP | Post 7 made on Friday August 12, 2005 at 18:35
KAS1
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Thanks so much for the help. I will give them a try and let you know how it works.
Post 8 made on Saturday August 13, 2005 at 12:30
dwg
Long Time Member
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August 2002
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Just as a note of info- the TD series of InFocus TV's use the NEC protocol. As in this pdf: [Link: infocus.com]

dwg
Post 9 made on Saturday August 13, 2005 at 18:47
johnsfine
IR Expert
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On 08/13/05 12:30 ET, dwg said...
Just as a note of info- the TD series of InFocus
TV's use the NEC protocol.

All the CCF files for InFocus that I could find use NEC protocol.

I answered in this thread assuming Kas1 was correct that the pdf he linked to is the correct file for his model. That pdf definitely does not doescribe NEC signals and definitely does describe RCA signals.

If Kas1 discovers he might have been wrong about which pdf file has the signals for his model, then the more common Infocus NEC signals would be a good thing to try.
Post 10 made on Sunday August 14, 2005 at 01:12
TwistedMelon
Long Time Member
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December 2004
435
John, I'm pretty sure we've looked at that exact Infocus HDTV file before. I'm having a strong sense of Deja-Vu here. The more things change, the more they stay the same. :)

Bruno
https://TwistedMelon.com - Mira & Manta IR - Remote Control Your Apps
Post 11 made on Sunday August 14, 2005 at 08:53
johnsfine
IR Expert
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I noticed that too, but didn't go searching for the thread.

As I was checking details of the match between the Infocus pdf and the RCA standard signal set (from old reverse engineering results), I remembered doing exactly the same thing before with a pdf file that only hinted RCA and turned out to have each bit inverted.

I don't remember the brand of that other occassion, but Infocus seems likely. You may be right that it was even the same pdf file. I tend not to remember such things.


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