JPH0522173A - Radio receiver - Google Patents

Abstract

PURPOSE:To prevent the malfunction of a receiving function with the down control of an antenna. CONSTITUTION:A malfunction proof means (controller) 44 is set to the radio receiver so as to automatically stop a receiving function (decoder) 43 when the down control is executed to an antenna 41 in the state of permitting the operation of the receiving function 43 of an RDS and receiving an FM radio broadcasting.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to radio receivers, and in particular to
An antenna for reception is attached so that up / down control is possible, and the F input by the antenna is received.
The present invention relates to a radio receiver having an RDS broadcast receiving function set so that M radio signals are multiplexed and broadcast as digital data.

[0002]

2. Description of the Related Art In recent years, in Europe, many broadcasting stations form a network to broadcast the same program. Then, there is a radio receiver having a so-called RDS broadcast receiving function, which is set so that radio waves from such a large number of broadcasting stations are inputted as digital data by an antenna and are multiplexed.

Further, as a receiving function characteristic of RDS broadcasting,
For example, while driving in a car
There is a tuning function such as an automatic follow-up function that automatically selects a road traffic information station having a stronger radio wave when the electric field strength decreases as the vehicle travels while receiving the S broadcast.

On the other hand, in such a radio receiver capable of receiving the RDS broadcast, the antenna can be electrically up / down controlled as necessary, such as an antenna attached to an automobile. Some are set as follows.

[0005]

In the radio receiver configured as described above, the antenna is down-controlled to be short when the receiving function is in the operation permitting state and the FM radio broadcast is being received. Then, the reception state of the radio receiver is deteriorated, which causes a problem that the reception function of the RDS broadcast malfunctions and the tuning mode operates.

In view of the above situation, it is an object of the present invention to provide a radio receiver capable of preventing malfunction of the reception function associated with antenna down control.

[0007]

In order to achieve the object of the present invention, an antenna for reception is attached so as to be up / down controllable, and an FM radio signal input by the antenna is digital data. In a radio receiver having an RDS broadcast receiving function set to be multiplex-broadcasted as an antenna, the radio receiver has the antenna when the receiving function is in an operation-permitted state and FM radio broadcasting is being received. The gist of the invention is to provide a malfunction preventing means for automatically shutting off the reception function when the down control is performed.

[0008]

In such a structure, if the receiving function of the RDS is in the operation permitting state and the antenna is down-controlled while receiving the FM radio broadcast, the receiving function is automatically cut off by the malfunction preventing means. To be done.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a radio receiver of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of a main part of a radio receiver of the present invention, and FIG. 2 is a waveform diagram related to antenna up control.

In FIG. 1, 10 is an RD of a radio receiver.
The RDS receiving unit 10 is an S receiving unit and includes an operation unit 20 and a display unit 30.

The operation unit 20 includes a manual tuning switch 21 for manual tuning operation and an automatic tuning switch 2 for automatic tuning operation.
2. FM switch 23, M for selecting the receiving band
W switch 24, LW switch 25, T / I switch 26 for receiving traffic information stations, API switch 27 for operating ON / OFF of automatic tracking function and station name display, U / D for antenna up / down control Switch 28, a plurality of preset memory switches M for selecting a broadcasting station, etc.
1, M2, ... M6 and the like.

The display section 30 includes a plurality of matrix display sections 31, 31 ... For displaying characters and the like, and a T / I display section 32 for displaying the on / off state of the T / I switch 26.
API for displaying the on / off state of the API switch 27
The display unit 33 and the U / D display unit 34 are provided.

The U / D display section 34, as shown in FIG.
By operating the U / D switch 28, it is set to emit light at the same time when the antenna up control state is set.

Next, the operation of the present invention will be described with reference to FIG. FIG. 3 is a block diagram showing a schematic configuration of the radio receiver of the present invention.

In FIG. 3, 41 is an antenna, 42 is a tuner, 43 is a decoder for receiving the RDS broadcast, 44 is a controller, 45 is an antenna up / down driver, and 46 is a PLL circuit.

First, when a band mode signal and a tuning signal for FM broadcasting or the like are output from the operation unit 20 to the controller 44, frequency control data is output from the controller 44 to the PLL circuit 46 based on predetermined frequency data. The tuner 42 selects the frequency from the input from the antenna 41,
You can listen to the broadcast corresponding to the channel selection signal.

On the other hand, a signal from the traffic information station is input to the decoder 43 from the antenna 41 via the tuner 42 by the ON operation of the T / I switch 26 for receiving the traffic information station, and is output to the controller 44 as digital data.
It is output from the controller 44 to the display unit 30 and the like.

On the other hand, when the U / D switch 28 of the operation unit 20 is pressed, an up / down control signal is output from the control unit 20 to the controller 44, and then the antenna 41 is up / down controlled via the driver 45. It At this time, when an FM down control signal is output from the control unit 20 when the FM broadcast or the like is being received and the TI switch 26 or the API switch 27 is in the ON state, the controller 44 is controlled. Then, the operation of the API switch 27 is automatically stopped.

By the way, the data output to the display unit 30 is
The present invention is not limited to the operation of turning on the T / I switch 26, and the station name can be displayed by turning on / off the API switch 27, for example.

[0021]

As described above, in the radio receiver of the present invention, when the receiving function is in the operation permitting state and the antenna is down-controlled while receiving the FM radio broadcast, the receiving function is achieved. Since the malfunction prevention means for automatically shutting off the antenna is provided, it is possible to prevent malfunction of the reception function due to down control of the antenna.

[Brief description of drawings]

FIG. 1 is a front view of a main part of a radio receiver of the present invention.

FIG. 2 is a waveform diagram relating to antenna up control of the present invention.

FIG. 3 is a block diagram showing a schematic configuration of a radio receiver of the present invention.

[Explanation of symbols]

 41 antenna 43 decoder (reception function) 44 controller (malfunction prevention means)

Claims (1)

Claim: What is claimed is: 1. An antenna for receiving is mounted so as to be up / down controllable, and an FM radio signal input by the antenna is set to be multiplexed and broadcast as digital data. In a radio receiver having a reception function for RDS broadcasting, the reception function is provided to the radio receiver when the antenna is down-controlled while the reception function is in an operation-permitted state and FM radio broadcasting is being received. A radio receiver characterized by being provided with a malfunction preventing means for automatically shutting off.