RBDS receiver provided with a database having broadcasting station related information
First Claim
1. An RBDS receiver provided with a database having broadcasting station related information, comprising:
- read-only database memory in which a broadcasting station related data has been previously stored respectively in association with geographical positional information, the broadcasting station related data having at least three kinds of data including a station identification data for identifying a broadcasting station, a program identification data for indicating the type of a program provided by the broadcasting station, and reception frequency data on broadcast waves emitted from the broadcasting station;
demodulating means for demodulating an RBDS data from received broadcast waves;
a randomly accessible database supplementary memory;
station selection memory for storing an indication of whether received broadcast waves are RBDS broadcast waves; and
control means for comparing the contents of said RBDS data with the contents of said broadcasting station related data and the data stored in said supplementary memory and for controlling the writing of said RBDS data into said supplementary memory if a broadcasting station indicated by said RBDS data is not coincident with any of broadcasting stations indicated by said broadcasting station related data and the data stored in said supplementary data.
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Accused Products
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.
107 Citations
9 Claims
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1. An RBDS receiver provided with a database having broadcasting station related information, comprising:
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read-only database memory in which a broadcasting station related data has been previously stored respectively in association with geographical positional information, the broadcasting station related data having at least three kinds of data including a station identification data for identifying a broadcasting station, a program identification data for indicating the type of a program provided by the broadcasting station, and reception frequency data on broadcast waves emitted from the broadcasting station; demodulating means for demodulating an RBDS data from received broadcast waves; a randomly accessible database supplementary memory; station selection memory for storing an indication of whether received broadcast waves are RBDS broadcast waves; and control means for comparing the contents of said RBDS data with the contents of said broadcasting station related data and the data stored in said supplementary memory and for controlling the writing of said RBDS data into said supplementary memory if a broadcasting station indicated by said RBDS data is not coincident with any of broadcasting stations indicated by said broadcasting station related data and the data stored in said supplementary data. - View Dependent Claims (2, 3, 4)
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5. An RBDS receiver provided with a database having broadcasting station related information, comprising:
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a read-only database memory in which a broadcasting station related data has been previously stored respectively in association with geographical positional information, the broadcasting station related data having at least three kinds of data including a station identification data for identifying a broadcasting station, a program identification data for indicating the type of a program provided by the broadcasting station, and reception frequency data on broadcast waves emitted from the broadcasting station; demodulating means for demodulating an RBDS data from received broadcast waves; and station selection memory for storing identification data for identifying a single program type and at least one reception frequency data of broadcast waves providing the program type for each station selection key information; wherein said station selection memory includes a designation of whether the broadcast waves received at the associated reception frequency data are RBDS broadcast waves, for each of the reception frequency data stored in said station selection memory. - View Dependent Claims (6, 7, 8, 9)
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Specification