Method and apparatus for radio data control
AssigneeModulation Sciences, Inc.
InventorBrett G. Porter
Life of this patent
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Abstract
RDS data broadcast method and apparatus is disclosed that provides dynamic sequencing and parallel formating to improve access to and the reliability of Radio Data System (RDs) services. Dynamic sequencing permits receivers not adapted to display the textual information that is broadcast as radiotext under the RDS standard to display that radiotext information, automatically. Dynamic control of complex day-parting schedules minimizes data selection and coding errors and delays, provides priority access to the station's data channel and provides transparent scheduling of real-time data entries, while protecting against losses of real-time entries through overflow.
Claims19
Apparatus for a broadcast station having a data broadcast subcarrier that is inaudible to the station's listeners and a modulator providing information on the subcarrier, said apparatus comprising:
- a data segment mix table, said table listing the frequency with which respective types of data segments are to be multiplexed into the information within a given time unit;
- an editor for supplying predetermined types of data to respective types of data segments;
- a display assignment list wherein predetermined displays are assigned to respective display-type data segments at respective predetermined times of day;
- and
- a sequencer that time-division multiplexes data provided by the editor to a plurality of data segments into the information, said sequencer being responsive to assemble said information in accordance with said data segment mix table and said display assignment list.
A method of assembling and multiplexing data segments into information used to modulate an inaudible broadcast subcarrier, said method comprising the steps of:
- supplying predetermined types of data to respective types of data segments;
- and
- assembling a plurality of data segments within a given time unit into the information in accordance with a data segment mix table listing the frequency with which respective types of data segments are to be multiplexed within a given time unit into the information and a display assignment list wherein predetermined displays are assigned to respective display-type data segments at respective predetermined times of day.
Dependencies are inferred from the claim text.