Re: The IR "Repeat signal" in XML

Keith Saunders — Thu, 02 Jul 2009 01:58:18 GMT

If there is no RMT number on the remote, then I expect the unit was made by someone else other than Sony.

However, this does not actually matter, regardless of who makes it you will be able to use bitstream with repeat.

If you have captured all the remote codes with the Lintronic box and you would like me to have a look at them for you, then put them in a zip file and upload them HERE

I am pleased you have managed to get the power work which of course does not need or want the repeat function.

Re: The IR "Repeat signal" in XML

kiosky — Wed, 01 Jul 2009 22:20:26 GMT

no RMT number found... :S

I use Lintronic box, which says

"Your remote control was detected by decoder:

717 Sony ..."

Re: The IR "Repeat signal" in XML

Keith Saunders — Wed, 01 Jul 2009 01:42:19 GMT

The carrier frequency has nothing to do with country.

Many vendors re-badge OEM (Original Equipment Manufacturer) products as there own, so it is likely that your Sony projector was made by someone else and if true means they would NOT have used the Sony remote protocol and may have used the fairly standard NEC protocol.

Does the Projector remote control have an RMT number in small writing on the back ? in the form of RMT????

Re: The IR "Repeat signal" in XML

kiosky — Wed, 01 Jul 2009 01:33:33 GMT

Thanks Keith,

I think this works! finally, i am able to "power on" my Sony projector :)

Well, on strange thing i found for my sony remotes (1 BDZ-V9, 1 Projector), they both have carrier frequency of 38KHz, not 40KHz? I guess it is because of different countries?

Re: The IR "Repeat signal" in XML

Keith Saunders — Tue, 30 Jun 2009 08:36:07 GMT

The beo5 "Repeat" function has some flaws which I will provide a basic overview below:-

The RC5 repeat function works correctly by toggling bit 3 for every repeat signal sent.
The NEC protocol repeat function still does not work correctly because the repeat signal START bit should have a SPACE period of half the length (i.e. 2.25 milli seconds) and it does not, it has 4.5 milli seconds so most receivers think a different command is being received. I have come up with a workaround solution for this problem by sending 2 NEC commands with a delay between them for each command.
RAW is not a protocol, but a representation of the digital signal in hex from 0000 to FFFF and is effectively an image copy of the original. XML files produced by the "Beo5 3rd Party XML Generator" and the latest software from Lintronics only use RAW because ANY remote can be cloned. HOWEVER you cannot use the repeat function with RAW and if you did try and use a repeat in RAW, the Beo5 would hang and the battery would become flat at once.
Bitstream is not a protocol, it is a bit representation on a timeslice basis for both the PULSE and the SPACE which makes up the PERIOD of one binary bit. The timeslice is the smallest time of any pulse or space. The repeat function does work with bitstream and I have made many XML file using bitstream with repeat function which work perfectly for Sony products

Because bitstream uses a binary stream of "1's" and "0's" for the minimum pulse and space period, depending on the encoding method used means that a 32 bit command may convert to as many as 110 bits per command in bitstream. Therefore manually converting commands is really a non starter because it would take so much time and would be prone to errors.

There are several industry accepted encoding methods, but the two most common are:-

Pulse Distance Coding where a pulse and a space of the same duration would be a binary "0" and a pulse and a space of 2 x the pulse distance would be a binary "1"
Pulse Length Coding where a binary "0" has a defined pulse width and a binary "1" is a greater width normally twice the "0" pulse width.

Philips RC5 uses "Bi Phase Coding" which means a positive going signal in a time slot is equal to a binary "1" and a falling edge signal in a time slot is a binary "0". This is the most complex protocol to decode by software.

So, for Sony products I recommend that all commands which don't require a repeat function be converted to RAW and those few commands such as fast forward, up, down etc be converted to bitstream.

If you take the start bit and first 4 data bits of a typical Sony command as below. All values are in micro seconds and the start bit for most Sony products is 2.4 milli seconds. I have made the numbers in this example the exact spec numbers are used, but in practice the values will be up to +-10% of the spec values

02400,00600 = 3000 >>> SONY START BIT
00600,00600 = 1200 >>> Binary "0" which is encoded in bitstream form as "10"
01200,00600 = 1800 >>> Binary "1" which is encoded in bitstream form as "110"
00600,00600 = 1200 >>> Binary "0" which is encoded in bitstream form as "10"
01200,00600 = 1800 >>> Binary "1" which is encoded in bitstream form as "110"

As can clearly be seen that this example is using Pulse Distance Coding and our 4 example bits of "0101" become "1011010110" in bitstream form.

I recently converted some commands in a Sony BDPS300 and the following string is for one command

<source_subItem stName="0" stCaption="0" stMenuCaption="0" stScreenType="0"
stIR="UNKNOWN:GlobalManual=1#IRSEQUENCE=BITSTREAM
#BITS=110101011010101010110101101101011010101011011011
#ALTBIT=110101011010101010110101101101011010101
#MARKFLANK=586#SPACEFLANK=594#SPACE2FLANK=0#PRESIGNALHI=2381#PRESIGNALLO=607
#Pause1=13376#Pause2=13376#Carrier=40#REPEATSIGNAL=1#AltSigWhenRepeat=1
#Comment=47bits=D5AAB5B5AADA" stLeave="Rel 1" stIRVideoOp1="1" stIRVideoOp2="1" stIRVideoOp4="1" stIRVideoOp5="1"
stIRVideoOp6="1" stIRAudioOp1="1" stIRAudioOp2="1" stIRAudioOp4="1" stIRAudioOp5="1" stIRAudioOp6="1" stIRVideoOp2Av="1"
stIRVideoOp4Av="1" stIRVideoOp6Av="1" nPage="4" nX="426" nY="20" nWidth="213" nHeight="25" nRowFinal="1" nColumnFinal="2"
nHidden="1" />

Sony remotes use a carrier frequency of 40 Khz remembering the the carrier is only transmitted during a pulse signal.

I hope this helps you more fully understand the situation.

The IR "Repeat signal" in XML

kiosky — Tue, 30 Jun 2009 04:02:45 GMT

Hello Keith, Thank you for all the useful info's for beo5, it really helps!!

I am searching for the "repeat command" for in the XML, i.e, I can send the IR command for 3 times for Sony to boot up.

Is there anyway of doing this?

thanks :)

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Re: The IR "Repeat signal" in XML

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Re: The IR "Repeat signal" in XML

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The IR "Repeat signal" in XML