Abstract:
A wireless adapter for decoding information from a broadcast signal to which a radio is tuned. The radio emits a local signal that serves to identify the broadcast signal, and a coupling part in the vicinity of the radio responds to the local signal. The coupling part produces a tuning signal in response to the local signal, and the tuning signal is applied to an adapter receiver circuit so that the receiver circuit acquires the broadcast signal to which the radio is tuned. A decoder circuit then decodes information contained in the acquired broadcast signal. In one embodiment, the adapter can be mounted in a vehicle near the vehicle radio. When the radio is tuned to a station that encodes, e.g., RBDS radio text on a sub-carrier of its broadcast signal, the adapter will acquire the station's sub-carrier, and will display the text conveniently and safely.
Abstract:
A method of and an apparatus for phase synchronization of a bit rate clock signal generated in an RDS receiver with a digital RDS signal demodulated on the receiver side, in which both the bit rate clock signal and the RDS signal have the same bit rate. Upon turning on of the RDS receiver and/or switching over of the same to a transmitter receiving frequency different from that received so far, a control signal is generated which, upon occurrence of the next rising edge or, alternatively, of the next falling edge of the RDS signal, effects such a phase angle shift of the bit rate clock signal that the bit rate clock signal, starting from that occurrence, is in phase synchronism with the RDS signal.
Abstract:
A signal reproduction apparatus such as an audio apparatus consists of a plurality of devices including a receiver. The receiver receives a broadcast wave signal (such as an FM signal) which includes a primary signal, along with data (such as RDS data) relating to a broadcasting station, a program, etc. transmitted together with the primary signal. The receiver includes a tuner circuit for receiving the broadcast wave signal, a decoder circuit and a signal generation device. The decoder circuit extracts the data (such as RDS data) relating to the broadcasting station and the program from the broadcast wave signal received by the tuner circuit. The signal generation device generates a remote control signal based on the data output from the decoder circuit, and outputs the generated remote control signal. The audio device includes a receiving section for receiving the remote control signal output from the signal generation device. The operation of the audio device is controlled based on the control signal output from the signal generation device of receiving section.
Abstract:
The present invention relates to a method of tuning a radio receiver to a desired frequency. The frequency of each tuning circuit in the radio receiver is controlled by controlling the capacitance diodes of the tuning circuits. The control is accomplished with an individual DA converter arranged for each tuning circuit with which the frequency of the tuning circuit associated therewith can be controlled independently of the other tuning circuits. The optimal control values of each DA converter is defined at least in two points of the frequency range of the radio receiver. These control values are stored in a memory provided in the radio receiver. On the basis of the stored control values the control values for the entire frequency range are calculated for each control means.
Abstract:
A radio receiver continues to demodulate a broadcast signal that was modulated with a baseband signal and a data signal to obtain the data signal after the receiver circuitry unassociated with extracting the data signal has been deenergized when the receiver is set in a predetermined mode. As described, the baseband signal has a program content, while the data signal identifies the program content of the baseband signal. In accordance with the present invention, the unassociated receiver circuitry is reenergized to output an amplified baseband signal capable of driving a speaker when the program content of the data signal indicates that a preselected program is starting, and again deenergizes the unassociated receiver circuitry when the program content of the data signal indicates that the preselected program is over.
Abstract:
A radio receiver selects incoming traffic messages with respect to their validity for the approximate location of the radio receiver and includes a decoder. The radio receiver uses frequency data and coordinate data transmitted by the transmitters to determine its approximate location, and compares this approximate location to locations contained in the traffic messages. When there is conformity, a conformity signal serves to switch through the location-specific messages contained in the traffic messages to an audio output device.
Abstract:
For the tuning of a broadcast radio receiver to a transmitter of a certain type of program using RDS information firstly the broadcast radio receiver is tuned to any convenient transmitter, which is transmitting a program, which is in accordance with the wishes of the listener. The PTY information retrieved from the RDS data of such transmitter is stored by operation of an associated control element in order to set a filter, whose filter condition is the agreement with such PTY information. For the following tuning of the broadcast radio receiver to another transmitter, as for example by means of a search sweep, such transmitter is only considered to be suitable for reception if it fulfills the filter condition.
Abstract:
An RDS receiver capable of extracting an AF list from the RDS data and selecting a broadcasting station of any of the frequencies on the AF list. The receiver is equipped with functions of selecting, during reception of a desired broadcast of one frequency, a station of the other frequency on the AF list by manipulation of a predetermined key; checking the reception state of the RDS data from the selected broadcasting station; checking the PI code to detect if the result of the preceding check is satisfactory or not; and picking up the broadcast from the selected station upon coincidence of the checked PI code with the PI code of the aforesaid one frequency.
Abstract:
Receivable frequencies based on a predetermined instruction signal are scanned in a first direction and across a frequency range extending from a first start frequency to a first end frequency. The tuning is retraced to the first start frequency, and scanning is resumed in the opposite direction across a second frequency range extending from the first start frequency to a second end frequency. Next, tuning is retraced to the second start frequency and scanning is resumed in the first direction across a third frequency range extending from the first end frequency to a third end frequency. The scan operation is repeated until predetermined upper and lower frequency limits are reached. When one of the frequency limits are reached, scanning is performed for one or more frequency ranges in the opposite direction without retrace until the second frequency limit is reached.
Abstract:
An RBDS compatible receiving method and system are provided. A broadcast receiver is tuned to a selected broadcast frequency. A first of two RBDS receivers operates in a locked mode to receive RBDS data associated with the selected broadcast frequency. Simultaneously, the second of the two RBDS receivers operates in a scanning mode to scan RBDS data associated with all broadcast frequencies. Match criteria corresponding with one or more categorical portions of RBDS data is compared with the RBDS signal associated with each broadcast frequency scanned by the RBDS receiver operating in the scanning mode. Each time a match occurs, the broadcast receiver can optionally be switched from the selected frequency to the broadcast frequency on which the match occurred while the first and second RBDS receivers switch operating modes.