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Beosystem 4

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frog
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frog posted on Tue, Jan 14 2020 6:05 PM

Hi,

i have one of these and really have two questions if anyone can help answer?

1. Does anyone know the protocol between the Beosystem 4 and the Beovision 12? Previous Beosystems used RS232 9600 8,n,1 - but I can’t figure out what this one is as I want to spoof the BS4 to think it has a BV12 attached

2. As I can’t communicate through this connector, I’m using the IR to send a Samsung On/Off command you the monitor. The issue I have is that the IR signal is sent quite a bit of time after the BS4 starts up, so the curtain opening and B&O logo aren’t shown. Is there a way to get the IR signal to be the first thing sent?

 

thanks in advance

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Dante
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Dante replied on Tue, Jan 14 2020 10:11 PM

I solved this problem using a Logitech Harmony control...you have a lot of flexibility to change sequence and add delays in the IR signals.

beojeff
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beojeff replied on Wed, Jan 15 2020 12:21 PM

Have you gone into the system settings to adjust the timings? I wasn't aware that there was a B&O logo in regular use. I've only seen the logo when powering up after a power cycle.

frog
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frog replied on Wed, Jan 15 2020 6:28 PM

Yes, I’ve tried the timing, but it seems that the IR command comes after the power link signal is sent - and I can’t see how to change that. 

if I could understand the protocol for the cable connecting the BS4 to the BV12, then I could re-engineer a solution.  

beojeff
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I use a Samsung tv with my BS4 and I always see the electronic curtains. I don't see a B&O logo, though. I don't think there's supposed to be a logo except when the BS4 is initially powered on.

beojeff
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BTW, I have an exceptionally long delay for the electronic screens so that the timing is perfect if I ever go into Cinema mode and then return to the TV out of Cinema mode.

frog
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frog replied on Wed, Jan 15 2020 6:57 PM

I’m actually using a LG screen, so I use a raspberry to translate the Samsung IR to a signal injected through the HDMI cable (HDMI-CEC). Ideally, I’d like to understand the protocol in the BV12 - but the service manuals etc don’t describe what it is - I was hoping it was serial (like the previous BVs using Panasonic protocols) but that doesn’t seem to be the case.

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