Does anyone know what protocol the ReplayTV uses for its keyboard. I've heard that WebTV keyboard will function & I've found CCF files that include a working keyboard, but the hex codes look dirty.

They all appear to be learned rather than generated.
For example the letter a generates the following pulses:
(values are quantized)
+3 -1 +1 -1 +2 -1 +1 -1 +2 -4 +3
-108 +3 -1 +1 -1 +2 -1 +1 -1 +2 -4
+3 -11 +3 -1 +1 -1 +1 -4 +2 -4 +3
-104 +3 -1 +1 -1 +1 -4 +8 -1

Chopping the code at the first huge negative value will produce the a on the ReplayTV, but only once. The unit then will not respond again until the whole sequence is sent. I have not tried truncating at the second large negative value yet.

Is it a PWM or Bi-Phase encoding?

The second word in the learned hex stream is 006b, indicating a frequency of 38.7 KHz

I read somewhere that it was RC5, but decoding that way did not produce meaningful data:
a - Device: 18 Command: 16
b - Device: 19 Command: 56
c - Device: 19 Command: 16

Neither did decoding as RC6A, the protocol used by the ReplayTV remote:
a - Device: 143 Unit: 255 Command: 240
b - Device: 0 Unit: 0 Command: 0
c - Device: 31 Unit: 255 Command: 224

Plain RC6 doesn't appear to provide meaningful data either:
a - Device: 97 Command: 192
b - Device: 126 Command: 224
c - Device: 109 Command: 192

Any information would be helpful. If someone can point me in the right direction, I'll be happy to clean up the codes.

Thanks,
Joe

This message was edited by jmf3rd on 06/24/02 11:11.05.

Could you post the entire HEX codes for two characters that are next to each other in the alphabet (i.e., post the codes for "a" and "b")?

Here you go:
c:
0000 006b 0011 0000 005a 001e 001e 001e 003c 001e 001e 001e 003c 001e 003c 001e 005a 08a8 005a 001e 001e 001e 001e 0078 003c 001e 003c 001e 005a 0fdc 005a 001e 001e 001e 001e 0078 010d 001e

d:
0000 006b 0018 0000 005a 001e 001e 001e 003c 001e 001e 001e 003c 003c 001e 001e 0078 0ca6 005a 001e 001e 001e 003c 001e 001e 001e 003c 003c 001e 001e 0078 088a 005a 001e 001e 001e 001e 0078 003c 003c 001e 001e 0078 0cac 005a 001e 001e 001e 001e 0078 010d 001e

Joe,

Thanks again for the '8' code. I look forward to hearing that you have posted a clean set.

Good luck.

-- Rob

These codes do look screwed up. Do you have a way of actually learning the codes? If so, learn the codes for "a", "s", "z", "x", "q", and "w". What I think the keyboard does is transmit a row, column address. For instance, the "a" on my keyboard is at row 3, column 1 (counting from the bottom left upward). Looking at the two codes you posted, I see:

C: ?01011??0011??00
D: ?01010??0010??00

The question marks are parts that don't make sense and the first part of D has been left off. So, this comes close to what I think it should, if the question marks are some type of separator. The "0011" of C might refer to the fourth row from the top (0, 1, 2, 3), and the "0010" of the D might refer to the third row from the top. I've never seen a keyboard of the type you are using, so I'm not sure if my analysis is correct or not. Also, C and D column codes should be the same (at least these keys line up in a column for my keyboard), but the codes above do not have this feature.

I have deciphered the protocol used by the WebTV / Dishplayer keyboard. With that information, I have generated a "clean" CCF with much smaller hex codes for many of the keys. It also fixes some previously bad learned codes like the '8'. The new CCF was placed into the upload queue sometime last week.

Joe

Thanks so much! I will definitely include these codes in my future ReplayTV CCFs. (ReplayTV uses the WebTV keyboard codes.)

Thanks a million!

Dale

Thank you. I will also be including it in my Replay CCF.

-- Rob

I keep looking, but the last thing in the New Files section is Dale Crawford's Easy Theater CCFs on 6/16.

8-(

-- Rob

I also use it for ReplayTV
Even though many of the codes in thye CCF are cannot be used by the ReplayTV, once I deciphered the protocol, I figured I'd clean them all up.

I just resubmitted it & posted it at: [Link: bestweb.net]

Joe

Thanks again Joe!

-- Rob