lVW-5001 - Liteon 5001 DVD Recorder

JARROYO · Post by **JARROYO** » Fri May 28, 2004 3:04 pm

I did a search for LVW-5001 - Liteon 5001 DVD Recorder and could not find one. From the manufacturer, I got this information that should help me create an upgrade. I was not able to get it to go... I selected protocol NEC1 and have been trying different devices. I also added these codes as Hex (instead of OBC). Was that right? I am using RemoteMaster. My remote is URC6131 and this is my first attempt at an upgrade.

Remote format : NEC
Customer code : 0x0AF7
Data code list :

No Key Code
----------------------
1 POWER 0x00
2 OPEN_CLOSE 0x0C
3 CH_INC 0x0D
4 CH_DEC 0x0E
5 NUM_1 0x09
6 NUM_2 0x05
7 NUM_3 0x01
8 NUM_4 0x0A
9 NUM_5 0x06
10 NUM_6 0x02
11 NUM_7 0x0B
12 NUM_8 0x07
13 NUM_9 0x03
14 NUM_0 0x40
15 DISPLAY 0x0F
16 TOP_MENU 0x4D
17 MENU 0x41
18 SETUP 0x4C
19 UP 0x47
20 DOWN 0x4B
21 LEFT 0x4E
22 RIGHT 0x42
23 SELECT 0x4A
24 GUIDER 0x4F
25 PAUSE_STEP 0x17
26 NAVI 0x43
27 FFW 0x1F
28 REW 0x5C
29 NEXT 0x13
30 PREVIOUS 0x50
31 PLAY 0x54
32 STOP 0x55
33 SOURCE 0x1C
34 RECODE 0x18
35 TIMER 0x14
36 EDIT 0x10
----------------------

johnsfine · Post by **johnsfine** » Fri May 28, 2004 3:46 pm

That "Customer code" tells you the device and subdevice but there are four different ways to interpret "0x0AF7" as a device and subdevice.

Fortunately we have data on another Liteon DVD which uses device 85, subdevice 234. There's a pattern to that (which I'd have a hard time explaining) which makes me nearly certain that 0x0AF7 means device 80, subdevice 239.

So start by setting the device and subdevice correctly on the the setup sheet in RM.

Next, the hex they gave you for commands is not the same thing as JP1 hex.

For most manufacturer hex data the relationship between their hex and JP1 hex is too complicated to describe. In this case I'm not certain what their hex means but I think I know.

I'm sure their "POWER 0x00" is OBC 0, which is FF in JP1 hex.
I think their "OPEN_CLOSE 0x0C" is OBC 48, which is F3 in JP1 hex.

In general, I think you can use a hex calculator to subtract their value from FF to get our hex value (FF minus 0C is F3 etc.)

johnsfine · Post by **johnsfine** » Fri May 28, 2004 4:10 pm

I hope you're planning to post the upgrade (once it works) to the appropriate folder in the Yahoo file area.

Most obscure brand name DVD's are just duplicates of more common brand names. But I don't see any other brand using NEC1:85.234 nor any other brand using NEC1:80:239, nor any data on these in the usual places (RC, LIRC, and Premise). So if you don't post it, the next JP1 user who needs it will have a hard time (they probably wouldn't know to find the data source you found that I think I've interpreted).

JARROYO · Post by **JARROYO** » Fri May 28, 2004 4:28 pm

Perfect. That should give me enough to get started. I am glad I asked, I would have never figured all that out.

I have to leave for the memorial day festivities, but I will work on this as soon as I get back. I definitely will share the results (if successfull) in the pertinent Yahoo spot.

Thank you for your invaluable insight and have a great weekend!

Post by **The Robman** » Fri May 28, 2004 5:35 pm

I'm pretty certain that their hex codes are just the OBCs in hex format.

johnsfine · Post by **johnsfine** » Fri May 28, 2004 6:51 pm

The Robman wrote:I'm pretty certain that their hex codes are just the OBCs in hex format.

That's still my second guess. (In other words, their 0x0C is OBC 12, rather than OBC 48 which is still my first guess).

Rob, any particular reason why you think they gave the commands in standard bit sequence (LSB transmit first), when they apparently gave the device/subdevice in the opposite bit sequence?

Or do you also think 0x0AF7 would be device 10, subdevice 247, rather than the 80,239 that I deduced?

Post by **The Robman** » Fri May 28, 2004 9:40 pm

johnsfine wrote:Rob, any particular reason why you think they gave the commands in standard bit sequence (LSB transmit first), when they apparently gave the device/subdevice in the opposite bit sequence?

Quite often, manufacturers quote their codes in a logical format rather than in a "transmitted" format, so in their minds the code is 0x0C (for example) even though we know that it gets transmitted backwards.

Also, looking at those codes, it seems that the lefthand nibble is usually zero while the righthand nibble contains the data, which might lead you to believe it was an MSB protocol if we didn't already know it's NEC.

JARROYO · Post by **JARROYO** » Sun May 30, 2004 12:16 pm

Well, this is awesome. It is working!!

Here is the result:

The Device is 10, subdevice 247.

The hex codes above are the OBCs in hex format. I programmed every single key in my 6131 and now I get to all functions. I have to cleanup my mapping and then I will post the resulting Remote Master profile in the yahoo JP1 board. Probably tomorrow night.

By the way, this Liteon recorder is the same box as the Gateway AR-230 recorder (The Gateway is a rebranded Liteon). The remote mapping should also work for the Liteon LVW-5005.

Thank you very much for all your help.

Post by **The Robman** » Mon May 31, 2004 4:52 pm

I've created a KM file for this, in case anyone needs it: Liteon-LVW-5001-DVD-player.txt

JARROYO, can you confirm that this player uses NEC1 rather than NEC2. If the buttons don't repeat properly, try NEC2 instead.

JARROYO · Post by **JARROYO** » Mon May 31, 2004 10:30 pm

It looks like it is NEC1. I changed it to NEC2 and had problems.

Thank you for posting the file in Yahoo.

Also, Thank you again to you and Johnsfine for all your help. There is no way I could have figured this out on my own. Thank you!