JP3288449B2 - Road traffic information display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for displaying road traffic information by receiving broadcast waves of traffic information.

[0002]

2. Description of the Related Art There is known a road traffic information display device which receives a broadcast wave of road traffic information broadcasted from a beacon road station and displays traffic information. At present, road traffic information provided by beacon road stations is limited to information that does not change with time (hereinafter, referred to as static information) such as destination guidance at a branch point. Information that changes over time (hereinafter referred to as dynamic information), such as traffic congestion, the time required to reach a certain point, emergency messages such as accidents, and regular messages such as regulations and construction, is connected to the Road Traffic Information Center via a communication line. Plans are underway to provide items classified by item.

[0003]

By the way, when static information and dynamic information are provided from a beacon road station, static information having a high time value is first displayed, and then the information is activated when a menu key is pressed. A display procedure is conceivable in which a menu screen of target information is displayed, and when an item selection key is pressed, dynamic information of the item is displayed. FIG. 5 is a flowchart showing such a display procedure, and FIG. 6 is a view showing an example of a display screen of a display. The display procedure will be described with reference to these drawings.
First, in step S31, it is determined whether a beacon radio wave has been received. For example, if traffic information is received from the beacon road station A installed just before the Shibuya exit of the Metropolitan Expressway, a destination guidance screen at the front Shibuya exit shown in FIG. 6A is displayed on the display in step S32. Here, when it is desired to know the traffic information around the current position of the vehicle, the occupant operates a menu key (not shown) corresponding to the “menu” displayed at the upper right of the screen. In step S33, it is determined whether or not the menu key has been operated. If the key has been operated, the process proceeds to step S34. If not, the process returns to step S31.

When the menu key is operated, at step S34, the static information screen shown in FIG.
Switch to the information menu screen shown in (b). In this information menu screen, "traffic information", "time required A", "time required B", "emergency message", "normal message"
Menus corresponding to dynamic information items such as are displayed, and an item selection key is provided at a position corresponding to these menus. In step S35, it is determined whether or not the item selection key of "traffic information" has been operated, and if it has been operated, the process proceeds to step S36, and if not, step S37.
Proceed to. In step S36, the "traffic information" screen of the running Metropolitan Expressway shown in FIG. 6C is displayed on the display. In the step S37, it is determined whether or not the item selection key of the "required time A" is operated.
The program proceeds to 38, where a screen of "required time A" (not shown) is displayed on the display. If the item selection key of "time required A" is not operated, the processing relating to "time required B" and "emergency message" is performed in a similar procedure. If none of the item selection keys are operated, step S39 is performed. Proceed to. In step S39, it is determined whether or not the item selection key of "normal message" has been operated. If it has been operated, the process proceeds to step S40, and if not, the process returns to step S31. In step S40, a screen of a "normal message" (not shown) is displayed on the display, and the process returns to step S31.

However, according to such a display procedure, there is a problem that every time a beacon is received, a menu key and an item selection key must be operated to display information on a desired item.

When the traffic information is received from the beacon road station B installed in front of Tanimachi IC while the "traffic information" screen shown in FIG. Despite the desire to display "information", the destination guidance screen at the front Tanimachi IC shown in FIG. 6D is displayed. Therefore, the occupant operates the menu key again to switch to the information menu screen shown in FIG. 6E, and then operates the "traffic information" item selection key to obtain the information from the beacon road station B shown in FIG. You have to switch to the latest "traffic information" screen.

[0007] It is an object of the present invention to provide a method for displaying traffic information of the currently displayed item or the same item as the last displayed item from the received traffic information each time a beacon is received. An object of the present invention is to provide an information display device.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to FIG. 1 showing the configuration of one embodiment. The present invention relates to a receiving means 1 for receiving broadcast waves of traffic information classified by item. 2, a display means 6 for displaying the traffic information received by the receiving means 1 and 2, and a selecting means 7 for selecting an item of the traffic information to be displayed on the display means 6. Is done. Each time receiving means 1 and 2 receive a broadcast wave of traffic information, storage means 5 for storing the last item of traffic information displayed on display means 6.
And when the receiving means 1 and 2 newly receive a broadcast radio wave of traffic information, the storage means 5 is selected from the received traffic information.
And display control means 3 for preferentially displaying, on the display means 6, the traffic information of the same item as the last display item at the time of the previous broadcast wave reception stored in the storage means, thereby achieving the above object.

[0009]

Each time a broadcast wave of traffic information is received, the last displayed traffic information item is stored. Then, when a broadcast wave of traffic information is newly received, traffic information of the same item as the last display item at the time of previous broadcast wave reception is preferentially displayed from the received traffic information.

In the means and means for solving the above-mentioned problems which explain the constitution of the present invention, the drawings of the embodiments are used to facilitate understanding of the present invention. However, the present invention is not limited to this.

[0011]

FIG. 1 is a block diagram showing the configuration of one embodiment. The receiving circuit 1 receives a broadcast wave of traffic information such as a beacon or FM multiplex via an antenna 2 and demodulates the data-modulated and transmitted traffic information data. Here, it is assumed that traffic information provided by a beacon, FM multiplexing, or the like is classified for each item. The data processing circuit 3 includes a microcomputer and its peripheral parts.
The display control of the traffic information is performed by executing a control program described later stored in the. The RAM 5 is a battery backup type memory that stores traffic information data and the latest traffic information items displayed on the display 6. The input device 7 is an operation member such as the menu key and the item selection key described above.

FIGS. 2 and 3 are flowcharts showing a display control program, and FIG. 4 is a diagram showing an example of a display screen based on information obtained from the beacon road stations A and B. The operation of the embodiment will be described with reference to these drawings. When the main switch of the input device 7 is turned on, the microcomputer of the data processing circuit 3 starts executing the control program.
First, in step S1, it is determined whether or not there is traffic information data stored in the RAM 5, and if there is, the flow proceeds to step S2.
Then, it is determined whether or not new traffic information is received by the receiving circuit 1. Figure 3 when new traffic information is received
To step S20, otherwise to step S3
Proceed to. In step S3, it is determined whether or not the menu key of the input device 7 has been operated. If the menu key has been operated, the process proceeds to step S4; otherwise, the process returns to step S1.

In step S4, the display 6 shown in FIG.
The information menu screen shown in (b) is displayed. On this information menu screen, dynamic information selection menus of "traffic information", "time required A", "time required B", "emergency message" and "normal message" are displayed, and each item corresponds to each item. Operating the item selection key switches to the dynamic information screen of the desired item. "Traffic information" is information on traffic congestion and traffic regulations around the vehicle, "Travel time A" is information on the route to the destination specified by the occupant and its travel time, and "Travel time B" is representative of the current location. This is information on the time required to reach a point. The “emergency message” is information such as a road section that has been disconnected due to an accident, and the “normal message” is information such as a notice of construction regulation.
When the item selection key corresponding to the “signboard” menu is operated, the screen is switched to the branch guide destination guidance screen shown in FIG.

In step S5, it is determined whether or not the "traffic information" item selection key has been operated. If the key has been operated, the flow proceeds to step S6, and if not, the flow proceeds to step S8. In step S6, the screen is switched to the "traffic information" screen shown in FIG. By operating the item selection key corresponding to the "details" menu on the "traffic information" screen, the screen is switched to a more detailed traffic information display screen, and operating the item selection key corresponding to the "menu" returns to the information menu screen. In the following step S7, "traffic information" is stored in the RAM 5 as the latest information item (hereinafter, referred to as the last item) displayed on the display 6, and the process returns to step S1. In step S8, it is determined whether or not "required time A" is selected. If it is selected, the process proceeds to step S9, and the screen is switched to a "required time A" screen (not shown). Subsequent step S1
If "0", "required time A" is stored as the last item, and the process returns to step S1. If the "time required A" is not selected, the "time required B" is processed in the same procedure, and if the "time required B" is not selected, the "emergency message" is processed in the same procedure. "Time required B"
The description of the processing of the “emergency message” is omitted. In step S11, it is determined whether or not "normal message" is selected, and if it is selected, step S1 is performed.
The process proceeds to step S2, and if not selected, returns to step S1.
In step S12, a "normal message" screen (not shown) is displayed. In step S13, "normal message" is stored as the last item in the RAM 5, and the process returns to step S1.

If it is determined in step S2 that a beacon radio wave has been received, the flow advances to step S20 in FIG. 3 to discard the traffic information data received from the beacon road station A that has passed and stored in the RAM 5, Update to the latest traffic information data obtained from Beacon Road Station B this time. In step S21, it is determined whether or not the last item stored in the RAM 5 is "traffic information". If the last item is "traffic information", the process proceeds to step S22 to determine whether "traffic information" is present in the information received this time. It is determined whether or not. If there is "traffic information", the flow proceeds to step S23, and if not, the flow proceeds to step S27. In step S23, the "traffic information" screen obtained from the beacon road station B is displayed on the display 6 as shown in FIG. 4D, and the process returns to step S1 in FIG. If the last item is not “traffic information”, the same procedure is used to process “required time A”, and the last item is “required time A”.
If not, processing is performed for “required time B” in a similar procedure. Further, when the last item is not the "time required B", the "emergency message" is processed in the same procedure. The description of the processing of the “required time A”, the “required time B”, and the “urgent message” is omitted. In step S24, the last item is "normal message".
Is determined, the process proceeds to step S25 if it is a "normal message", and otherwise proceeds to step S27. In step S25, it is determined whether or not there is a normal message in the information received this time.
Proceed to step S26, otherwise proceed to step S27. In step S26, a screen of a normal message (not shown) is displayed on the display 6, and the process returns to step S1 in FIG. In step S27, the destination guidance screen shown in FIG. 4A is displayed on the display 6, and the process returns to step S1.

As described above, the latest dynamic information items displayed on the display are stored, and each time a broadcast wave of traffic information such as a beacon is received, the traffic information stored in the received information is stored. Since the traffic information of the same item as the information item is preferentially displayed, the information of the item desired by the occupant can be displayed each time the traffic information is received, without performing a troublesome screen switching operation.

In the above embodiment, when the beacon is received, the information of the same item as the last item is displayed preferentially. However, when the "emergency message" is included in the received information, the "emergency message" is displayed more than the other information items. The "emergency message" may be displayed with priority, and then the dynamic information may be displayed according to the last item.

In the above embodiment, the display 6 has been described as a display means dedicated to the road traffic information display device.
The display means may also be used as a display means such as a vehicle-mounted TV or a navigation device.

In the configuration of the above embodiment, the receiving circuit 1
The antenna 2 constitutes a receiving means, the display 6 constitutes a display means, the input device 7 constitutes a selection means, the RAM 5 constitutes a storage means, and the data processing circuit 3 constitutes a display control means.

[0020]

As described above, according to the present invention, each time a broadcast wave of traffic information is received, the last displayed traffic information item is stored, and a new broadcast wave of traffic information is stored. When receiving, the traffic information of the same item as the last display item at the time of the previous broadcast radio wave reception is displayed preferentially from among the received traffic information. Each time the information is received, the traffic information of the item desired by the occupant can be displayed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment.

FIG. 2 is a flowchart showing a display control program executed by the microcomputer.

FIG. 3 is a flowchart showing a display control program executed by the microcomputer.

FIG. 4 is a diagram showing an example of a display screen of a display.

FIG. 5 is a flowchart showing a display procedure in a case where static information is displayed with priority each time a beacon radio wave is received, and then an item is selected to display dynamic information.

FIG. 6 is a view showing an example of a screen displayed on a display according to the display procedure shown in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiving circuit 2 Antenna 3 Data processing circuit 4 ROM 5 RAM 6 Display 7 Input device

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-5-143886 (JP, A) JP-A-6-119595 (JP, A) JP-A-1-102998 (JP, U) JP-A-1- 102999 (JP, U) Japanese Utility Model 1-103000 (JP, U) Patent 2903849 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01S 1/00-1/68 G06F 3 / 14 G08G 1/09 G01C 21/00

Claims (1)

(57) [Claims] 1. A receiving means for receiving a broadcast wave of traffic information classified by item, a display means for displaying traffic information received by the receiving means, and an item for traffic information displayed on the display means. A road traffic information display device comprising a selecting means for selecting, each time a broadcast wave of traffic information is received by the receiving means.
In a storage means for storing the items of traffic information that was last displayed on the display unit, when the newly received broadcast waves of traffic information by the receiving means, in said storage means from the received traffic information A road control information display device, comprising: display control means for displaying, on the display means, the traffic information of the same item as the last display item stored at the time of receiving the previous broadcast wave.