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Sony XBR EFC for headphone

 
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sfhub



Joined: 12 Oct 2003
Posts: 287

PostPosted: Sun Oct 12, 2003 7:33 pm    Post subject: Sony XBR EFC for headphone Reply with quote

My tube-based Sony XBR has built-in IR headphones with a button on the
remote to turn it on.

I tried most (but not all) EFCs for device code 0000, but don't seem to be
able to locate an EFC for the headphones.

I can do it through learning, but was wondering if the EFC is there and I'm
just not looking hard enough.
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Mark Pierson
Expert


Joined: 03 Aug 2003
Posts: 3011
Location: Connecticut, USA

PostPosted: Sun Oct 12, 2003 7:39 pm    Post subject: Re: Sony XBR EFC for headphone Reply with quote

sfhub wrote:
I can do it through learning, but was wondering if the EFC is there and I'm just not looking hard enough.

You could learn it and see what EFC is decoded by IR. Or, you could check these Sony codes to see if it's listed.
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jamesgammel
Exile Island Resident


Joined: 03 Aug 2003
Posts: 397
Location: Gillette, Wyoming

PostPosted: Sun Oct 12, 2003 7:44 pm    Post subject: Reply with quote

I don't know what a sony xbr is, but since you're using 0000(TV?) I guess it's a TV?

At any rate, if you can learn the signal from the headphone's remote, then IR should be able to tell you what you need to know. Look in the "learned" tab. Left box will be a list of all the learned signals. Click on the one you want to know the details about. Just worry about the top right box. IR should display the protocol, device(s), OBC, hex, and EFC values for the signal. SOMETIMES the columns get a little out of whack, and one or more may not be visible. Just drag and drop the columns with your mouse until they show. The efc one is especially prone to get "lost" since it's the right-most one. It may well be that it's not even in 0000, the decode will give clues about that.

Jim
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The Robman
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Joined: 01 Aug 2003
Posts: 18102
Location: Chicago, IL

PostPosted: Sun Oct 12, 2003 8:20 pm    Post subject: Re: Sony XBR EFC for headphone Reply with quote

sfhub wrote:
My tube-based Sony XBR has built-in IR headphones with a button on the remote to turn it on.

I tried most (but not all) EFCs for device code 0000, but don't seem to be
able to locate an EFC for the headphones.

I can do it through learning, but was wondering if the EFC is there and I'm
just not looking hard enough.


This is a perfect example of how you need to change your way of thinking now that you have JP1. In the old, pre-JP1 days, trying to find the EFC for "headphones" would have meant either searching through lots of web sites for the code or sittig in front of the device patiently trying all 256 possible EFCs (and believe me, I've done that many times), but now that you not only have JP1 and a JP1 learning remote, you actually have a button on the OEM remote that performs the functions (which of course, is not usually the case when you're looking for discretes).

So, rather than spending even a few minutes searching web sites or trying codes, just learn the button and you will see the 100% acurate EFC info right away.
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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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sfhub



Joined: 12 Oct 2003
Posts: 287

PostPosted: Sun Oct 12, 2003 9:48 pm    Post subject: Reply with quote

Ok guys, I was able to get the EFC via the suggested key learning and
subsequent display with IR.

Sony XBR, above, was referring to a TV, as you guys surmised. Sony's
higher-end line with nicer feature set usually gets the XBR designation.

This particular TV has an IR headphone transmitter built into the unit itself,
which is quite useful for using split-screen feature to allow wife and myself
to watch two different shows on the same device.

Thanks for poster child'erizing my old way of thinking. Smile

Actually my initial reluctance to go straight to learning/IR display stemmed
from my newbie misunderstanding of the nature of EFCs.

For some reason I was under the impression that an "EFC" was
functionality that was programmed in by UEI for each particular device
code.

Thus I thought that if the EFC was not listed in the existing list on hifi
remote, then, while I could discover the ir specifics using learning/IR, I'd
have to create a custom device to use the ir specifics (and thus use more
memory than I'd like)

I now realize that EFCs are just data sent via a particular protocol and
once the protocol is known, any of the EFCs are available to send by the
remote. The lists on hifi-remote are just how a particular piece of
equipment interprets that EFC code in the context of that protocol.

Apparently since this is all up to interpretation, technically there is nothing
(other than convention) for one EFC/protocol tuple to behave differently
from one vendor to another.

As I write this, I realize this is all obvious to the old-timers, but that was
the source of my reluctance to go immediately to learn/IR display.

An interesting complication that was further confusing my situation was
my troubles at using the "learning" function on my remote. At first I
thought the "learning" was busted, but then realized what I was trying
to learn was the remote control code for my TVs *IR* headphone
functionality. It wasn't obvious to me at first, but my 15-2117 kept
"learning" IR audio signals rather than IR from my Sony remote, until
I turned off the TV.
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The Robman
Site Owner


Joined: 01 Aug 2003
Posts: 18102
Location: Chicago, IL

PostPosted: Sun Oct 12, 2003 9:55 pm    Post subject: Reply with quote

So, what was the EFC? If you post it, I'll add it to hifi-remote.com.
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Rob
www.hifi-remote.com
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sfhub



Joined: 12 Oct 2003
Posts: 287

PostPosted: Sun Oct 12, 2003 11:14 pm    Post subject: Reply with quote

Device Code: TV/0000
EFC: 070 Aux Audio/IR Headphone
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Lenroc



Joined: 05 Oct 2003
Posts: 61

PostPosted: Mon Oct 13, 2003 12:11 am    Post subject: Reply with quote

Slightly OT, but what exactly do you mean by built-in IR headphones?

Are they wireless headphones, that transfer their signal over IR, and came with the TV?

(Built-in to me implied that it was part of the TV, but that wouldn't make sense for the "IR" part...)
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sfhub



Joined: 12 Oct 2003
Posts: 287

PostPosted: Mon Oct 13, 2003 1:39 am    Post subject: Reply with quote

There's a strip of IR transmitters integrated into the TV's frame, just
above the picture tube. Until you turn the IR audio on, you wouldn't
even know they were there.

There's about 15-20 transmitters and since the older trinitron tubes are
cylindrical (kind of like the side of a coke can), they give around 160
degrees of coverage.

Since they were integrated with the unit, they function together with
the Picture in Picture audio swapping and can all be controlled from the
same remote using a single protocol.

The package came with IR headphones which allow you to listen to the IR
wireless audio transmitted by the TV.

It's not that much different than taking standalone IR wireless
headphones and attaching to the audio monitor port of your TV,
except it is aesthetically more pleasing, it works in concert with
the TVs other features like PiP, and it is simpler to use.
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Lenroc



Joined: 05 Oct 2003
Posts: 61

PostPosted: Mon Oct 13, 2003 1:57 am    Post subject: Reply with quote

That sounds really interesting. Among other things, I'd never heard of IR wireless headphones (only RF).

What is the model of your TV, and do they still make them that way?
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sfhub



Joined: 12 Oct 2003
Posts: 287

PostPosted: Mon Oct 13, 2003 2:35 am    Post subject: Reply with quote

Sony KV-32XBR45

I haven't seen them putting the wireless audio transmitters on the TV
frame for quite a while now, maybe 5-6 years since they did this last.

Sony usually starts adding these funky cool features when a product
line is nearing the end of the line, so they can differentiate their products
from previous model years.

I actually use the feature quite a bit, especially when people are sleeping
or we want to watch two shows on the same TV.

I've been waiting for them to add wireless RF transmitters to some of
their newer plasmas, but I'm thinking it is a pointless exercise and I
should just get a panasonic plasma and just tell stories about how they
don't make TVs like they used to.
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