I'm looking for a way to find out who's Hex codes these are. Looking to program a very basic remote with only pre-programmed codes in the unit to do simple control of power and volume. All I have are the Hex codes to work off of.

Command Hex Code
KEY_POWER 88771C63
KEY_VOL_UP 88771867
KEY_VOL_DOWN 8877047B
KEY_PLAY 88771B64
KEY_PREV 88770778
KEY_NEXT 88771F60
KEY_SOURCE 8877007F
KEY_3D 88773847
KEY_MUTE 88773848
DISCRETE_ON 88771CE4
DISCRETE_STANDBY 88771C04
SOURCE_OPTICAL 88770026
SOURCE_COAXIAL 887700A6
SOURCE_AUX 88770016
SOURCE_BT 88770096

Any help would be appreciated....