JPH0830895A - Fm multiple broadcasting receiver - Google Patents

Abstract

PURPOSE:To immediately display the required road traffic information. CONSTITUTION:The receiver consists of a tuner part 1, demodulation part 3, control part 4, RAM 5, display device 8. When an ignition key is controlled to the ACC (accessory) position, whether or not an information menu selection switch 12 is operated is judged to display the information menu screen. In this case, when any information is selected, the type of the selected information is stored in the RAM 5. Then, when any type of road is selected from the menu screen and when the type of the information to be displayed is stored in the RAM 5, the information of road kinds selected from the menu screen is displayed based on the type of the information. Thus, even when the type of road is switched, the similar information can be displayed at once. On the other hand, if the information is not stored in the RAM 5, the display is switched to the similar order.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road traffic information display device for receiving road traffic information transmitted by FM multiplex broadcasting and displaying traffic jam information, accident information and the like on a display device.

[0002]

2. Description of the Related Art Road traffic information communication systems for transmitting traffic congestion information, accident information, etc. by FM multiplex broadcasting are known. The information transmitted by FM multiplex broadcasting includes menu information, traffic congestion information, accident information, travel time information, and the like. The menu information includes a list of road types such as Shuto Expressway and Tomei Expressway, and congestion information, accident information, travel time information, etc. are transmitted for each road type included in the menu information. Each of these pieces of information is received by the FM multiplex broadcast receiver, and each of the received information is displayed on the display device inside the FM multiplex broadcast receiver.

FIG. 6 is a diagram showing a screen display of a conventional FM multiplex broadcast receiver. When the FM multiplex broadcast is received, first, the menu screen shown in FIG. 6A is displayed. This menu screen is created based on the received menu information. Here, when the operator selects "1" with the selection switch, as shown in FIG. 6 (b), the traffic information for the Shuto Expressway is displayed. The thick line in the figure shows the congestion area.
Next, when the operator operates the page feed switch, FIG.
As shown in (c), the accident information of Shuto Expressway is displayed. The X mark in the figure indicates the location of the accident. Next, when the operator operates the page feed switch, the travel time information of the Shuto Expressway is displayed as shown in FIG. 6 (d). The numbers displayed beside the two bold arrows in the figure indicate the time required for the section.

Next, when the operator operates the menu switch, the menu screen is displayed again as shown in FIG. 6 (e). Here, when the operator selects "2" with the selection switch, as shown in FIG. 6 (f), the Tomei Expressway congestion information is displayed. Next, when the operator operates the page feed switch, as shown in FIG. 6 (g), the Tomei Expressway accident information is displayed. Next, when the operator operates the page feed switch, the travel time information of Tomei Expressway is displayed as shown in FIG. 6 (h).

As described above, if this type of FM multiplex broadcast receiver is used for a vehicle, it is possible to display traffic jam information, accident information, etc. in real time while driving, and avoid traffic jams and accidents.

[0006]

In the road traffic information communication system, the contents of information received by each receiver and the switching order of screens are provided so that the same service can be received even if the type of FM multiplex broadcast receiver changes. And the types of receivable information are all common. For this reason, for example, in order to display the travel time of the Tomei Expressway when the vehicle enters the Tomei Expressway while traveling on the Shuto Expressway while displaying the travel time, the screen display must be switched in the following procedure. I won't. Operate the menu switch to display the menu screen. Select "2" with the selection switch to display the Tomei Expressway congestion information. Operate the page feed switch to display the accident information of Tomei Expressway. Operate the page feed switch to display travel time information for the Tomei Expressway.

Thus, in order to switch from the travel time information on the Shuto Expressway to the travel time information on the Tomei Expressway, four-step switch operation is required. Moreover, since these switch operations must be performed during driving, the burden on the driver is very heavy.

It is an object of the present invention to provide an FM multiplex broadcast receiver capable of displaying desired road traffic information immediately.

[0009]

The present invention will be described with reference to FIG. 1 showing an embodiment. In the present invention, the traffic congestion information, the accident information or the travel time information for each road type is transmitted by FM multiplex broadcasting. And the like, and display control means 4 for displaying information on the display device 8 based on the road traffic information received by the receiving means 1.
The receiving means 1 is applied to an FM multiplex broadcasting receiver including
Information type selecting means 12 for selecting the information type of any of the information included in the road traffic information received in
And a road type selecting means 10 for selecting one of the road types received by the receiving means 1, and the road type selecting means after any one of the information types is selected by the information type selecting means 12. When any one of the road types is selected by 10, the display control unit 4 is configured to display the information of the selected information type corresponding to the selected road type on the display device 8. The invention according to claim 2 is the FM multiplex broadcast receiver according to claim 1, further comprising a storage means 5 for storing the information type selected by the information type selection means 12, and the storage means 5 stores the information type. Road type selection means 10 if not stored
When one of the road types is selected by, the predetermined information is displayed, and when the information type is stored in the storage means 5, when the road type is selected by the road type selection means 10, The display control unit 4 is configured to display the information of the stored information type for the selected road type on the display device 8.

[0010]

According to the first aspect of the invention, the information type selecting means 12 selects the information type of any one of the road traffic information received by the receiving means 1. Further, one of the road types received by the receiving means 1 is selected by the road type selecting means 10. When the road type is selected by the road type selecting unit 10 after the information type is selected by the information type selecting unit 12,
The display control means 4 causes the display device 8 to display the information of the selected information type corresponding to the selected road type. In the invention described in claim 2, the information type selected by the information type selecting means 12 is stored in the storage means 5. Then, if the information type is not stored in the storage unit 5, the display control unit 4 displays predetermined information when the road type is selected, while the storage unit 5 stores the information type. If so, the information of the selected road type is displayed based on the stored information type.

Incidentally, in the section of means and action for solving the above problems for explaining the constitution of the present invention, the drawings of the embodiments are used for making the present invention easy to understand. It is not limited to.

[0012]

FIG. 1 is a block diagram of an embodiment of an FM multiplex broadcast receiver according to the present invention. In this embodiment, an FM multiplex broadcast receiver intended for vehicle installation will be described. Reference numeral 1 is a tuner section for selecting an FM signal in a predetermined frequency band among radio waves received by the antenna 2, 3 is a demodulation section for demodulating the FM signal received by the tuner section 1 into a digital signal, and 4 is a demodulation section 3. It is a control unit that converts the demodulated digital signal into original program information. Reference numeral 5 is a RAM for storing the program information converted by the control unit 4, and 6 is a ROM for storing the font data of Chinese characters. Reference numeral 7 is a video processing circuit for converting the received program information into a video signal, and 8 is a display device for displaying the video signal.

Reference numeral 9 is a menu switch for instructing the display of the menu screen shown in FIG. 2A, and 10 is a selection switch for selecting a predetermined road type from the road types displayed on the menu screen, which is displayed on the menu screen. It is provided separately corresponding to each item. The road types displayed on the menu screen include, for example, Shuto Expressway and Tomei Expressway. Reference numeral 11 is a page feed switch for instructing the screen switching of the display device 8. When the switch 11 is operated,
The screen of the next page is displayed on the display device 8. 12 is shown in FIG.
An information menu selection switch for instructing the display of the information menu shown in (b). Here, the information menu indicates a list of information to be provided such as traffic jam information, accident information, travel information, and the like, and image data for displaying the information menu screen is stored in the ROM 6 in advance.
The menu switch 9, selection switch 10, page feed switch 11 and information menu selection switch 12 are all connected to the control unit 4.

FIG. 3 is a flow chart showing a display process of the control unit 4 of the FM multiplex broadcast receiver according to the present invention. When the ignition key (not shown) is operated to the ACC (accessory) position, the control unit 4 starts the process of FIG. In step S1 of FIG. 3, the menu screen shown in FIG. 2A is displayed. In the process of step S1, if the information on the menu screen has not been received yet, a message indicating that the reception is not completed is displayed. In step S2, it is determined whether the information menu selection switch 12 has been operated. If the determination is positive, the process proceeds to step S3, the information type selection process shown in FIG. 4 is performed, and the process returns to step S1.

Step S10 of the information type selection process of FIG.
At 1, the image data stored in the ROM 6 is read and the information menu shown in FIG. 2B is displayed. In step S102, it is determined whether any information in the information menu is selected by the selection switch 10.
If the determination is negative, the process stays in step S102, and if the determination is positive, the process proceeds to step S103. Step S10
In 3, the type of the selected information is stored in the RAM 5 and the process returns.

As described above, in the information type selection processing, the information to be displayed on the display device 8 is selected and the type of the selected information is stored in the RAM 5. Therefore, thereafter, the control unit 4 can know which information is selected by reading the contents of the RAM 5.

Returning to FIG. 3, if the process of step S2 is denied, the process proceeds to step S4, and it is determined whether or not any one of the road types displayed on the menu screen is selected by the selection switch 10. judge. If the determination is negative, the process returns to step S2, and if the determination is affirmative, the process proceeds to step S5. In step S5, it is determined whether or not the type of information is stored in the RAM 5. If the determination is affirmative, the process proceeds to step S6, and the information of the road type selected from the menu screen is displayed based on the type of information stored in the RAM 5. For example, when the information type stored in the RAM 5 is accident information and the road type selected on the menu screen is Tomei Expressway, the Tomei Expressway accident information is displayed on the display device 8.

On the other hand, if the determination in step S5 is negative, the process proceeds to step S7, and the congestion information on the road type selected from the menu screen is displayed. That is, in this step S7, the information predetermined by the road traffic information system is displayed.

When the processing of step S6 or S7 is completed, the process proceeds to step S8, and it is determined whether the information menu selection switch 12 has been operated. If the determination is affirmative, the process proceeds to step S9, the information type selection process of FIG. 4 is performed, and the process returns to step S8. When the determination in step S8 is negative, the process proceeds to step S10, and the page feed switch 11
It is determined whether or not is operated. If the determination is positive, the next screen is displayed and the process returns to step S8. That is, as in the conventional case, the screens are switched in the order of traffic congestion information → accident information → travel time information → ... If the determination in step S10 is negative, the process proceeds to step S12 and it is determined whether or not the menu switch has been operated. If the determination is negative, the process returns to step S8, and if the determination is affirmative, the process returns to step S1.

In summary of the operations shown in FIGS. 3 and 4, when the ignition key is operated to the ACC position, it is first determined whether or not the information menu selection switch 12 is operated, and it is determined that the information menu selection switch 12 is operated. Display the menu screen. Here, when any information is selected, the type of the selected information is stored in the RAM 5. Next, if any road type is selected from the menu screen,
At that time, if the type of information to be displayed is already stored in the RAM 5, the information of the road type selected from the menu screen is displayed based on the type of the information. On the other hand, when the information is not stored in the RAM 5, the display is switched in the order of traffic congestion information → accident information → ...

In the above embodiment, for example, in order to display the travel time on the Shuto Expressway, first select the travel time on the information menu screen and then select "1" on the menu screen as shown in FIG. 5 (a). To do. As a result, the travel time of the Shuto Expressway is displayed as shown in FIG. To display the Tomei Expressway travel time in this state, the menu screen is displayed once as shown in FIG. 5C, and then "2" is selected. As a result, the Tomei Expressway travel time is displayed as shown in FIG. As described above, according to the present embodiment, in order to switch the display from the travel time on the Shuto Expressway to the travel time on the Tomei Expressway, the following two steps are required. Operate the menu switch to display the menu screen. "2" is selected by the selection switch.

By performing the above two-step processing, it is possible to switch from the travel time of the Shuto Expressway to the travel time of the Tomei Expressway, and the number of switch operations is smaller than that of the conventional FM multiplex broadcast receiver. The burden on the driver is reduced.
Also, mistakes in pressing the switch are reduced.

When creating the information menu in the above embodiment, if the number of information types is too large to fit on one screen, only the frequently used information may be displayed.
Alternatively, they may be displayed side by side in descending order of frequency of use. In the above embodiment, the example in which the road type is selected by the selection switch 10 has been described. However, the navigation device reads the road type information of the road currently being traveled, and automatically selects the road type based on the read road type information. You may choose.

In the embodiment configured as described above, the tuner section 1 serves as the receiving means, the control section 4 serves as the display control means,
The information menu selection switch 12 serves as information type selection means,
The selection switch 10 corresponds to road type selection means, and the RAM 5 corresponds to storage means.

[0025]

As described above in detail, according to the present invention, since the information type to be displayed on the display device can be selected in advance, even if the selection of the road type is changed on the way, Information on the selected road type can be displayed immediately. According to the invention described in claim 2, since the storage means for storing the information type is provided, the information type selected by the operator can be immediately grasped, and the information for each road type can be displayed immediately.

[Brief description of drawings]

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

FIG. 2 is a diagram showing a menu screen and an information menu screen.

FIG. 3 is a flowchart showing a display process of a control unit.

FIG. 4 is a flowchart showing an information type selection process of a control unit.

FIG. 5 is a diagram showing screen transitions when switching from travel time display on the Shuto Expressway to travel time display on the Tomei Expressway.

FIG. 6 is a diagram showing a screen transition when the travel time display of the Shuto Expressway is switched to the travel time display of the Tomei Expressway in the conventional FM multiplex broadcast receiver.

[Explanation of symbols]

 1 Tuner section 2 Antenna 3 Demodulation section 4 Control section 5 RAM 6 ROM 7 Video processing circuit 8 Display device 9 Menu switch 10 Selection switch 11 Page feed switch 12 Information menu selection switch

Claims (2)

[Claims] 1. A receiving means for receiving road traffic information such as traffic congestion information, accident information, travel time information, etc. for each road type transmitted by FM multiplex broadcasting, and the road traffic information received by the receiving means. On the basis of the above, in an FM multiplex broadcast receiver including a display control means for displaying information on a display device, an information type of any one of the information included in the road traffic information received by the receiving means is selected. And a road type selection unit that selects any one of the road types received by the receiving unit, wherein the display control unit selects one of the road types by the information type selection unit. When one of the road types is selected by the road type selection means after the information type is selected, the selected information corresponding to the selected road type is selected. FM of the information type, characterized in that to be displayed on said display device
Multiplex receiver. 2. The FM multiplex broadcast receiver according to claim 1, further comprising a storage unit that stores the information type selected by the information type selection unit, wherein the display control unit stores the information in the storage unit. If one of the road types is selected by the road type selecting means when the information type is not stored, predetermined information is displayed, and the road is displayed when the information type is stored in the storage means. When any one of the road types is selected by the type selecting means, the stored information type information of the selected road type is displayed on the display device. .