Method of selecting receiving frequency for RDS receiver
First Claim
1. A receiving frequency selecting method for a RDS receiver, comprising the steps of:
- a) receiving, using an RDS receiver, a RDS signal broadcast from a first broadcast station at a first frequency, said RDS signal including a first group of alternative frequencies for a group of broadcasting stations in a broadcasting network which includes said first broadcast station, said receiver including a first memory for storing a list of alternative frequencies;
b) storing alternative frequencies of said first group, which are not in said list, in said first memory to create a new list of alternative frequencies; and
c) chasing a broadcast program being broadcast by said broadcasting network by varying a receiving frequency of said RDS receiver to a frequency which corresponds to one of said alternative frequencies in said new list in order to maintain a receiving level at or above a prescribed receiving signal level or a signal level of said first broadcasting station.
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Accused Products
Abstract
A receiving frequency selecting method for a vehicle-mounted RDS receiver, wherein a list of alternative frequencies being transmitted by former broadcasting stations are stored in a memory, and the RDS receiver chases the same broadcast program based on the stored list of alternative frequencies whenever the motor vehicle returns to the same broadcasting service area of the network wherein the stored list of alternative frequencies is effective for use. Further, the stored list of alternative frequencies data relating to frequencies of the received broadcast waves during the operation of chasing the same radio program are also utilized together with the stored list of alternative frequencies transmitted by the broadcasting stations for chasing the same broadcast program.
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Citations
16 Claims
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1. A receiving frequency selecting method for a RDS receiver, comprising the steps of:
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a) receiving, using an RDS receiver, a RDS signal broadcast from a first broadcast station at a first frequency, said RDS signal including a first group of alternative frequencies for a group of broadcasting stations in a broadcasting network which includes said first broadcast station, said receiver including a first memory for storing a list of alternative frequencies; b) storing alternative frequencies of said first group, which are not in said list, in said first memory to create a new list of alternative frequencies; and c) chasing a broadcast program being broadcast by said broadcasting network by varying a receiving frequency of said RDS receiver to a frequency which corresponds to one of said alternative frequencies in said new list in order to maintain a receiving level at or above a prescribed receiving signal level or a signal level of said first broadcasting station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A receiving frequency selecting apparatus for a RDS receiver, comprising:
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RDS receiving means receiving a RDS signal broadcast from a first broadcast station at a first frequency, said RDS signal including a first group of alternative frequencies for a group of broadcasting stations in a broadcasting network which includes said first broadcast station; a first memory for storing a list of alternative frequencies, and for storing alternative frequencies of said first group, which are not in said list, to create a new list of alternative frequencies; and control means for chasing a broadcast program being broadcast by said broadcasting network by varying a receiving frequency of said receiving means to a frequency which corresponds to one of said alternative frequencies in said new list in order to maintain a receiving level at or above a prescribed receiving signal level or a signal level of said first broadcasting station. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification