[SOLVED] name of an Error control method

[little-gummibaer]

hi

I need the names of codes which are constructed as follows:
The code always has the same number of zero and one example: 010110 is a corect codeword 110000 is not an corect codeword
is the code bild as 2/4 code is the code tabelle:
data codeword
00 - 0011
01 - 0101
10 - 0110
11 - 1001
has you seen this before in need the name or the name of codierungs typ
of course an 2/4 makes no sence it is only for an easy example
i hope someone con help me

little

 

[betwixt]

Are you thinking of 'Manchester' encoding? Not an error correcting code but one that always maintains an equal number of 1 and 0 bits.

Brian.

 

[little-gummibaer]

Are you thinking of 'Manchester' encoding? Not an error correcting code but one that always maintains an equal number of 1 and 0 bits.

Brian.

no by manchaster the code is in the signal edge in this code each state get an codeword which has equel zero one
i need it by datatransfer with infrared in movement because in the border areas the current bit send more then on time (the efect comes of a longer bittime )
heidi

 

[zorro]

Hi little,

It is called "M out of N" coding scheme.
The code of your example has M=2 and N=4.
Regards

Z

 

[little-gummibaer]

thank you :razz: