The RDS standard specifies the bit sequence and
format of the bitstream. In general, the stream
contains consecutive groups of 104 bits. Each
group is made up of four 26 bit blocks. Each
block is then made up of 16 bits of information
and 10 checkword bits for error correction.
Groups are continuously transmitted one after
another. One group at 104 bits with a bit rate of
1187.5 bits/s takes 87.6ms to transmit. The RDS
standard specifies the information format for the
groups and blocks and will not be repeated here.