JPH0729935U - FM multiplex broadcast receiver - Google Patents

Abstract

(57) [Summary] [Purpose] If there is no change in the contents of the traffic information stored in the storage means, from the viewpoint of safe driving, omitting unnecessary time for repeatedly reading the same traffic information. Provided is an FM multiplex broadcast receiver designed to avoid danger. [Arrangement] A lamp 10 that operates as a notification means is provided, and when the control device 4 updates the contents of the memory 5 with new traffic information, the lamp 10 is turned on at the same time. By observing the state of the lamp 10, the driver can easily determine whether or not the content of the traffic information stored in the memory 5 is new. Therefore, the driver can confirm this by observing the lamp 10 in advance if the contents of the traffic information stored in the memory 5 are not changed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an FM multiplex broadcast receiver capable of extracting multiplex information from a received signal, storing it in a storage means, and optionally reading the multiplex information from the storage means as needed.

[0002]

[Prior art]

 For example, an FM multiplex receiver is installed in a vehicle to receive FM multiplex broadcasts, and character data such as multiplex information such as traffic information is extracted from the received FM multiplex signal and stored in a storage means. It is known that the traffic information switch is turned on, the traffic information is arbitrarily read from the storage means in the form of characters and displayed on the character display. Every time the contents of the traffic information are changed, new traffic information is rewritten and stored in the storage means.

In this case, the character display is restricted in its size because it is incorporated in the FM radio, so it cannot be designed too large. As an example, this character display is designed to have a size of 1 cm in length and width and 30 characters in two lines. Therefore, when reading the traffic information, the driver must read the 30 characters in an instant by looking at the character display. Normally, it takes about 2 seconds for the driver to read the traffic information from the character display.

[0004]

[Problems to be solved by the device]

 By the way, in the conventional FM multiplex broadcast receiver, if there is no change in the contents of the traffic information stored in the storage means, the driver may repeatedly read the same traffic information over time. Therefore, there is a problem that the danger is unavoidable from the viewpoint of safe driving because wasteful reading time is taken. That is, when the traffic information is read once by looking at the character display and then the traffic information switch is turned on again after a certain time to read the traffic information from the storage means, the traffic information is conventionally stored in the storage means. Even if there is no change in the content of the traffic information from the previous time, there is no means to confirm this, so the driver cannot determine that the content has not been changed until the traffic information is read again. For this reason, the driver neglects to look ahead during this reading time, which is dangerous for safe driving.

The present invention has been made to address the above problems. When the contents of the traffic information stored in the storage means are not changed, the same traffic information is repeatedly read. It is an object of the present invention to provide a multiplex broadcasting receiver that eliminates wasteful time and avoids danger from the viewpoint of safe driving.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides an FM multiplex broadcasting receiver capable of extracting multiplex information from a received signal, storing the multiplex information in a storage means, and optionally reading the multiplex information from the storage means as needed. When the content of the multiplex information stored in the storage means is updated, a notifying means for notifying the update of the content of the multiplex information is provided.

[0007]

[Action]

 According to the structure of the present invention as set forth in claim 1, when the content of the multiple information stored in the storage means is updated, the notification means operates so as to notify the update of the content of the multiple information. With this, when there is no change in the contents of the traffic information stored in the storage means, it is possible to confirm this in advance by the notification means, thus eliminating wasteful time for repeatedly reading the same traffic information. Thus, the danger can be avoided from the viewpoint of safe driving.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of an FM multiplex broadcasting receiver of the present invention, where 1 is an antenna, 2 is a tuner for obtaining an FM demodulated signal from a signal received by an antenna 1, and 3 is a traffic information from the FM demodulated signal. , An FM multiplex demodulator for extracting a multiplex information signal including multiplex information such as receiver control data, 4 determines the type of data content from the multiplex information signal sent from the FM multiplex demodulator 3, and This is a control device that stores (writes) the traffic information data in the memory (storage device) 5 and arbitrarily reads the traffic information from the memory 5 as necessary. It is composed of a microcomputer with a built-in arithmetic processing unit.

The control device 4 checks the update flag of the traffic information data selected from the multiple information signals transmitted one after another, thereby making it the same as the traffic information already stored in the memory 5. If there is a change in the update flag, it means that the data is new traffic information. Therefore, the contents of the memory 5 are controlled to be updated to the new traffic information. At the same time, the control device 4 turns on the lamp 10 that operates as a notification means to notify the operator that the contents of the memory 5 have been updated. When there is no change in the update flag, the contents of the memory 5 are kept unchanged.

When the operator turns on the traffic information switch 9, the control device 4 reads out the contents of the traffic information stored in the memory 5 and causes the character display 6 to display the content of the traffic information. At the same time, the lamp 10 is turned off. As a result, when the lamp 10 is off, it is possible to inform the operator that the contents of the traffic information in the memory 5 have already been displayed.

Next, the operation of this embodiment will be described with reference to the flowcharts of FIGS. 2 to 4. As shown in FIG. 2, in step A, the controller 4 first performs an initialization operation such as clearing the contents of the memory 5 by turning on the power of the receiver (or by performing a reset operation). , Waits for reception of the multiplex information signal from the FM multiplex demodulator 3. Next, in step B, after receiving the data of the transmitted multiple information signal, in step C, the type of data content is determined. If the result data of this judgment is other information than the traffic information, the flow proceeds to step D to perform other processing. If the determination result data is traffic information, the flow proceeds to step E where traffic information processing is performed.

FIG. 3 illustrates details of the operation of traffic information processing. First, in step A, it is determined whether or not the traffic information data is the same as the traffic information already stored in the memory 5 by checking the update flag (note that in the memory 5, It is assumed that the traffic information of a certain content is already stored after being initialized). When there is no change in the update flag (old information), the flow ends and the memory 5 is kept as it is. When the update flag is changed (new information), the flow proceeds to step B, where the contents of the memory 5 are updated with new traffic information. Then, in step C, the lamp 10 is turned on.

Next, the operation of displaying the contents of the memory 5 on the character display 6 will be described with reference to FIG. In step A, when the operator turns on the traffic information switch 9, the control device 4 reads the contents of the traffic information stored in the memory 5. Next, in step B, the control device 4 displays the read contents on the character display 6. At the same time, in step D, the lamp 10 is turned off. The step C will be described later.

As described above, according to this embodiment, the lamp 10 is provided, and when the control device 4 updates the contents of the memory 5 with new traffic information, the lamp 10 is simultaneously turned on. By observing the state of the lamp 10, it is possible to easily determine whether or not the contents of the memory 5 are new. Therefore, by observing the lamp 10, the driver can confirm this in advance if the contents of the traffic information stored in the memory 5 are not changed. Therefore, since it is possible to omit the wasteful time of repeatedly reading the same traffic information as in the past, it is possible to avoid danger from the viewpoint of safe driving.

FIG. 5 shows a modified example of the present embodiment, and shows an example in which the lighting color of the lamp 10 is changed to notify that there is a change in the contents of the traffic information. The type of lighting color can be arbitrarily selected. For example, when the memory 5 is initialized, the lamp is lit in orange, and when the traffic information is updated, the lamp is changed to green and lit, and thereafter, the combination of the colors is repeated.

FIG. 6 shows another modification of the present embodiment, in which the lamp 10 is made to blink to notify that the content of the traffic information has been changed. It That is, the lamp is turned on when the memory 5 is initialized, the lamp is blinked when the traffic information is updated, and thereafter, this operation is repeated by this combination. The effects similar to those of the embodiment can be obtained by each of these modifications.

FIG. 7 shows another embodiment of the present invention, in which a voice synthesizer 7 is connected to the control device 4, and a speaker 8 is further connected to the voice synthesizer 7. According to the present embodiment, the content of the traffic information read from the memory 5 by the control device 4 can be output from the speaker 8 by voice, so that the driver must pay attention to the front direction. You will be able to check and concentrate on safe driving. Further, by using the voice synthesizer 7, there is an advantage that the music currently being listened to (FM stereo broadcast, CD, etc.) is not unnecessarily obstructed. According to the present embodiment, in step C in the flowchart of FIG. 4, the communication information data is output from the memory 5 to the voice synthesizer 7.

FIG. 8 shows another embodiment of the present invention, in which an alarm sound generator 11 is used in place of the lamp 10 in FIG. As the alarm sound generating device 11, a device such as a buzzer or a siren that generates an alarm can be used. When the contents of the traffic information in the memory 5 are updated by this, the driver neglects to look ahead. The driver can concentrate on safer driving, as he / she can check this without hearing. 9A and 9B are schematic diagrams for explaining the operation in the case of this example.

[0019]

[Effect of device]

 As described above, according to the present invention, when the content of the multiplex information stored in the storage means is updated, the notification means for notifying the update of the content of the multiplex information is provided. If there is no change in the contents of the traffic information provided, it is possible to avoid the danger from the viewpoint of safe driving by omitting the wasteful time of repeatedly reading the same traffic information.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an FM multiplex broadcast receiver of the present invention.

FIG. 2 is a flowchart illustrating the operation of this embodiment.

FIG. 3 is a flowchart illustrating the operation of this embodiment.

FIG. 4 is a flowchart illustrating the operation of this embodiment.

FIG. 5 is a schematic diagram illustrating a modified example of the present embodiment.

FIG. 6 is a schematic diagram illustrating another modification of the present embodiment.

FIG. 7 is a block diagram showing another embodiment of the present invention.

FIG. 8 is a block diagram showing another embodiment of the present invention.

FIG. 9 is a schematic diagram illustrating another embodiment.

[Explanation of symbols]

 3 FM multiple demodulator 4 Control device 5 Memory (storage means) 6 Character display 7 Voice synthesizer 9 Traffic information switch 10 Lamp 11 Alarm sound generator

Claims (1)

[Scope of utility model registration request] 1. An FM multiplex broadcast receiver capable of extracting multiplex information from a received signal and storing it in a storage means, and optionally reading the multiplex information from the storage means, is stored in the storage means. An FM multiplex broadcast receiver, characterized in that, when the content of the multiplex information is updated, there is provided notification means for notifying the update of the content of the multiplex information.