Sony DVD SIRC's remote control

[Nigel Goodwin]

Has anyone had a play with Sony DVD remotes?.

My PIC IR tutorial is based on the Sony SIRC's system, which uses a 5 bit device code, and a 7 bit command code (plus 1 start bit). I 'thought' all SIRC's units were the same?, but on Saturday I was building a Sony multi-region modification transmitter, and it didn't work!.

I was rather bemused at first, but checking with a scope I found out that the DVD remote uses an extra 8 bits (21 bits in total, rather than 13 bits), and I wasn't aware of this.

The extra 8 bits seem the same whichever DVD button you press, so perhaps it's an extended device code?. I simply modified my code to send an extra 8 bits (actually 0x49) and the transmitter works perfectly now.

Simply point it at a compatible Sony DVD player (NS series) set on standby, and press a single button, and the player becomes region free :lol:

So, anyone else noticed this?.

 

[mramos1]

I use old Sony equipment. But thought I would look around. It looks like it is new and releated to the new DVD products.


Found this on google. Updates to a Zenith remote I think.


[PDF] Firmware Library
File Format: PDF/Adobe Acrobat - View as HTML
V1.3 09-01-04 Adds Sony 20 bit codes (such as for DVD player) ... Adds possibility of transmit to Zenith as 1.5 stop bits. * V4.9 09-24-99 Works for Zenith ...
www.crwww.com/CRWeb/PDF/CR_Firmware.pdf - Similar pages

 

[Nigel Goodwin]

I use old Sony equipment. But thought I would look around. It looks like it is new and releated to the new DVD products.

Thanks, at least it proves I'm not going mad! 8)

 

[Papabravo]

Sony actually has three different variations on SIRC with different message lengths. I can't remember what length the third one uses of the top of my head.

 

[Nigel Goodwin]

Sony actually has three different variations on SIRC with different message lengths. I can't remember what length the third one uses of the top of my head.

There was mention of 15 bits in the PDF listed above.

 

[mramos1]

Nope, you are not going mad. But weird how it appears Sony DVDs only. Maybe the wega stuff went that way, but I did not see an reference to them when I was looking..

I cut and pasted from google, so the main PDF did not come over. Here is the main one. Looked like firmware updates, but the revision history might tell you when and what they changed. I did not read it.

**broken link removed**

 

[Papabravo]

Looks like 12, 15 and 20 from the following URL

**broken link removed**

Nigel is not mad he's just ahead of his time :wink:

 

[densimitre]

Hi to all..

I´m working actually in decode sony SIRC codes of my remote controller RM-SC3, of my Hi/Fi System (genezi)....

Capturing frames from this RM-SC3 (usinf TMR0 with DIV_16 on 16F648) i found that works in 12,15 & 20 bit modes...

I know the protocol of 12 bits..but..what about 15 and 20 bits..???

Thank you very much

Bye

 

[Papabravo]

Did you follow the thread in the previous post?

 

[densimitre]

Yes, but my questions is: The Remote Control implements just one only mode?...or it can do all modes at same devices..

If is 15 or 20 too, how can i identify the device and command codes?

examples of my RM-SC3..

Key Captured Frame Lenght(bits)
Pause 10011100101110000000 20
Stop 00011100101110011100 20
+ 010010000001 12
- 110010000001 12
Display 110100100001 12
Select 010001100001 12
Set/Clock101001100001 12
Power 101010000001 12
Tape 110001000001 12
CD 101001000001 12
Tuner/Band 111100000001 12
Function 100101100001001 15
|<< 00001100101110011100 20
>>| 10001100101110011100 20
>> 00101100101110011100 20
Enter 00111110101110011100 20

First bit is the first received from RM...

Now, i dont know the format of the 15 and 20 bits packet mode..

Thankyou

 

[Papabravo]

Sorry this was an old thread that was resurected. Try this link
http://www.geocities.com/CapeCanaveral/Launchpad/4652/sircs.htm
Why can't people find things the way I can?

 

[densimitre]

The link is great, but your thirth line...mmmmmmmmmm

Thank you

 

[Papabravo]

....mmmmmmmmmmmm yourself.

The third line was tongue in cheek, and it's no big secret. I just use Google, and I follow the links. Everybody here is capable of doing precisely the same thing. We expect no less.

 

[densimitre]

....mmmmmmmmmmmm yourself.

The third line was tongue in cheek, and it's no big secret. I just use Google, and I follow the links. Everybody here is capable of doing precisely the same thing. We expect no less.

Ok, dont worry

That link i had already read...my problem is than 20 bits code can´t be decoded, because the protocol is not out there...

Example: device´s codes for my RM is not the same when appears 15 or 20 bits code...please read above...in that cirscuntances i dont know what to do...

Thank you

 

[Nigel Goodwin]

Ok, dont worry

That link i had already read...my problem is than 20 bits code can´t be decoded, because the protocol is not out there...

Example: device´s codes for my RM is not the same when appears 15 or 20 bits code...please read above...in that cirscuntances i dont know what to do...

Check my tutorial at , which describes how to use the different formats, it's really pretty easy!.