Importance

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Abstract

This RBDS receiver comprises a database having broadcasting station related information. The receiver is provided with a read-only database memory in which broadcasting station related data have been stored respectively in association with geographical positional information, the broadcasting station related data including broadcasting station identification data, program type identification data and receptiond frequency data; a demodulator system for demodulating the RBDS data from received broadcast waves; a randomly accessible database supplementary memory; and a control system for comparing the RBDS data with the broadcasting station related data and the data stored in the supplementary memory to perform write control for writing the RBDS data into the supplementary memory if a broadcasting station indicated by the RBDS data is not coincident with any of broadcasting stations indicated by the broadcasting station related data and the data stored in the supplementary memory. According to the present invention, the database can be supplemented immediately and accurately in response to updates and revisions of the contents of actually broadcast programs. Also, the control for display and so on can be appropriately performed in accordance with the contents of actually broadcast programs.

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First Claim