12 described herein are described inter alia in netherlands patent application nl a 8801275 which corresponds to u s pat no 5 060 219 however the auxiliary codes can also be distinguished from the address codes if the auxiliary codes contain specific bit combinations which do not occur in the address code if the time codes described above are used for the address codes this is possible by using of a bit combination comprising the most significant bits 20 21 and 22 for the three bytes 13 14 and 15 which will now be explained with reference to fig6 in fig6 the reference numeral 66 denotes possible bit combinations of the address codes in the lead in area on account of the high value mm of the byte 13 in the lead in area the most significant bit 20 of the byte 13 in this area will always have the logic value 1 the value ss of the byte 14 varies between 0 and 59 which in the case of the bcd encoding means that the most significant bit 21 of the byte 14 always has the logic value 0 the value ff of the byte 15 varies between 0 and 74 so that the most significant bit 22 for the byte 15 also always has the logic value 0 the other bits of the bytes 13 14 and 15 in the bit combination 66 may assume either the logic value 0 or the logic value 1 which is indicated by the symbol 34 x 34 the reference numeral 67 denotes the possible bit combinations of the bytes 13 14 and 15 of the address code in the programs area of the track portion situ.