You are right that a .pcf file is a zip archive, consisting of an XML file (ConfigEdit.xml), and some bitmaps. The XML file is reasonably easy to understand for a programmer. However, the format of the IR signals within that file, e.g.,





49 0 f 6c 4 5e 0 96 8e 2e a5 3f 5f 13 11 f2 cb 20 bf c f2 cb 20 bf c f2 cb 10 c1 6f 5 13 11 f2 cb 20 bf c f2 cb 20 bf c f2 cb 10 c1 6f 5 df


is, to my knowledge, secret. If you know how to make sense of the numbers therein, or a document describing it, please tell me, and I will implement it in IrScrutinizer.

Actually, since PE can transform it, (both directions?) it is probably not completely impossible to "crack" it, at least partially. (Brute force: Building a table and inverting it.)  But I do not want to get sued by Philips either...