| 摘要 |
A system ( 10 ) for converting streaming digital data to frequency modulated data includes a digital decoder ( 12 ) providing content and associated data, a system controller ( 14 ) for formatting the associated data into frequency modulated sub-carrier data, and a frequency modulator ( 20 ) for modulating ( 24 ) the content and combining ( 25 ) the modulated content with a buffered version of the frequency modulated sub-carrier data. The streaming digital data can come from a satellite digital audio radio system receiver and the associated data can include at least one among a channel name, a channel number, an artist name, a song title, and traffic information. The system controller can format the associated data into an RDS Message format. The frequency modulator can include an RDS physical layer ( 32 ) and an RDS data link layer ( 30 ) that can generate a checksum. The frequency modulator can also include a register or buffer ( 28 ).
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