Don't know if this is correct place for this but here goes:

Horizontal divisions are 2ms.

It´s the inverted output from a tsop1736.

Having trouble on identifyng correct protcol since all protocolls from [Link: sbprojects.com] have or a Leader pulse, or a start bit .
However this one start's with a short pulse.

It's from a Set Top Box, of Scientific AtlantabBrand, that somepeople say uses RC6.

Any ideias?

Thank You