JPH07174576A - Crossing-information display method, and road information-providing apparatus for vehicle-mounting - Google Patents

Abstract

(57) [Abstract] [Purpose] An intersection information display method that facilitates the identification of road distinction at intersections by making display settings according to the vision of drivers with color blindness or color blindness and passengers affected by screen reflection. And to provide a road information providing device. [Structure] At intersection A, regarding a road that branches into three roads,
When displaying the intersection information provided from the installed beacons on the display 1 in the car, the thickest diagonal arrow 2 is the taxiway to the highway, and the thin white arrow 3
Is indicated as a general road, and the arrow 4 with a middle black circle pattern is indicated as a main road. In the example of Fig. 1, the arrows for "pattern + thickness" are used to distinguish the types of roads, but in addition to this, elements such as shape, color, and light and darkness are used to display "Destination display by road type and direction". Using the "design", the display can be freely edited so that the driver can easily see it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display of a beacon receiving device or a navigation device having beacon receiving means, and more particularly to a method and a device for displaying intersection information.

[0002]

2. Description of the Related Art Beacon systems, which have been developed for many years, are at the stage of practical application. Then, not only the beacon system but also other in-vehicle information providing systems, how to provide information in an easy-to-understand manner and contribute to safe driving is an important issue.

As a conventional technique relating to this, Japanese Patent Laid-Open No.
Some are disclosed in Japanese Patent No. 10775. This describes a method of displaying intersection information, which is one of the service information of the beacon system.
Then, "If the intersection is a three-dimensional connection shape, an arrow from the road on which the vehicle is traveling to the road where the vehicle should first turn is displayed on the screen together with the name of the destination, and if the shape of the intersection is a plane connection shape. Display on the screen as it is,
"Intersection information display method in which the display is color-coded depending on whether the road on which the vehicle is traveling is an expressway or an ordinary road" has been proposed.

[0004]

Since the intersection information display method described above distinguishes roads by the color coding of the background of the arrow that indicates the destination of the road, the driver is blind or color-blind or a passenger who is affected by screen reflection. However, it was difficult to distinguish roads. In addition, since there are individual visual differences in human vision and there are color-coded and easy-to-see display methods suitable for the individual, this point lacks consideration.

Therefore, an object of the present invention is to provide an intersection information display method and an on-vehicle road information providing device which facilitates identification of road distinction at intersections by making display settings according to the vision of a driver or the like. Especially.

[0006]

An object of the present invention is to provide a beacon signal of intersection information in a method for displaying intersection information of a road information providing apparatus which receives a beacon signal from a communication apparatus installed on a road and provides road information. This is achieved by receiving and changing the destination display pattern for each direction of the branch road according to the type of the branch road at the intersection.

An on-vehicle road information providing apparatus that achieves the object of the present invention receives a beacon signal of intersection information,
According to the type of branch road at the intersection, means for changing and displaying the destination design for each direction of the branch road is provided.

[0008]

By the means of the present invention, the design of "destination display according to direction", that is, "arrow", which distinguishes and displays the types of branch roads at intersections, is changed to a design such as a pattern, a shape, and light and shade in addition to color It is possible to change. So, for example,
A driver with color blindness or color blindness is distinguished by a colored arrow instead of a color, and for passengers affected by screen reflection, the color of the patterned arrow is clearly distinguished between black and white. The display can be set to be easy to see according to the vision of the driver or the like.

[0009]

The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings.

FIG. 1 is a diagram showing an embodiment of an intersection information display according to the present invention. It is a "road display screen" in which the intersection information provided from the beacon installed on the road is displayed on the display 1 in the vehicle.

FIG. 2 is a diagram for explaining the road condition of the intersection shown on the screen of FIG. It is the figure which showed concretely the road condition of the intersection A which a vehicle is going to pass when the screen like FIG. 1 is displayed.

At the intersection A, three roads a, b and c are branched. Here, a branch a is a guideway to an expressway and leads to a place name x, a branch b is a general road and leads to a place name y, and a branch c is a highway and leads to a place name z.

Returning to FIG. 1, reference numerals 2, 3, and 4 are arrows, which are examples of destination display by direction, and 5 is the background of the display screen.
x, y, and z represent destination names. And arrow 2,
The types of branch roads are distinguished by changing the designs of 3 and 4. That is, the arrow 2 with a thick diagonal line represents a taxiway to a highway, the arrow 3 with a thin outline pattern represents a general road, and the arrow 4 with a medium thin black circle pattern represents a highway. This embodiment employs "a pattern for each" pattern + thickness "of the destination display for each direction corresponding to the type of road", which is a combination of the distinction by the pattern of the arrow and the distinction by the thickness.

FIG. 3 shows an embodiment in which a type of a branch road and a destination display pattern for each direction are combined and edited. Types and patterns, shapes, colors of highways, highways, general roads, etc.
It is the figure which has shown the combination design with the distinction such as bright and dark.
Display pattern 1 in FIG. 3 is an example in which the arrow is edited by "pattern + thickness", display pattern 2 is an example in which the arrow is edited by "thickness + brightness", and display pattern 3 is an example by "color". is there. (However, the colors of the display pattern 3 cannot be expressed in the figure, and only the way of thinking is shown.) In addition to these, various edited designs are possible. Since a general road map incorporates the distinction based on the thickness of the road, it is effective to incorporate and edit the element of "thickness" because the display is easy to see.

FIG. 4 is a diagram of the beacon signal processing unit 6 of the navigation device having the beacon receiving device or the beacon receiving means.

The beacon information is received via the receiving antenna 7. The received signal is demodulated by the beacon demodulator 8 into a data signal and a position detection signal. The data signal is synchronized with the clock signal generated by the clock recovery circuit 10, and the synchronized data signal and clock signal are supplied to the gate array 11. Also, the position detection signal is
It is directly supplied to the gate array 11. Gate array 11
The data signal is descrambled, CRC is calculated, and the traveling direction of the vehicle is determined. Design (road type,
The type of arrow) is stored in the VRAM 22 as a character. From here, the design is called as needed. The display IC 15 calls the character in dot units in synchronization with the scanning line signal from the address of the VRAM 22 and displays it on the display 1. The switch interface 20 and the switch 21 are used to call or edit a design.

Next, a road type / arrow selection method will be described with reference to FIGS.

FIG. 5 is a diagram showing an embodiment of the "road type selection screen" 30 according to the present invention. FIG. 6 is a diagram showing an example of the “arrow selection screen” 40.

Four buttons (switches) are used for this road type / arrow selection operation. a button 31
Start / end function of selection operation and design decision function,
The b button 32 is a function for sequentially forwarding road types and arrow types, and the c button 33 is a button for switching between a road type selection screen and an arrow selection screen. And the d button 50
Is a button for calling another combination design.

FIG. 7 is a flow chart showing the procedure of road type / arrow selection according to the present invention. These flowcharts will be described with reference to FIGS. 5 and 6.

FIG. 7 will be described. When the a button is pressed, the display on the vehicle-mounted display 1 is switched to the “road type selection screen” 30 as shown in FIG. 5, and the selection operation is started. Then, the display of the road type 1 becomes a blinking screen. (In the example of FIG. 5, the highway display corresponds to road type 1.) This blinking indicates which road type is currently selected, and the fact that road type 1 is blinking means "from now on. I will edit the design for road type 1. "

If the a button is pressed again in (STEP 1), the selection mode is immediately interrupted, the "road type selection screen" returns to the original "road display screen" in FIG. 1, and the selection operation is completed. It Therefore, the a button is also a switching button between the “road display screen” and the “road type selection screen”.

When the c button is pressed in (STEP2), the mode is switched to the "arrow selection screen" which is a mode screen for selecting the type of arrow corresponding to the blinking road type 1, and the process proceeds to (STEP5). The c button is the "road type selection screen" 30 (Fig. 5) and the "arrow selection screen" 40 (Fig. 6).
Is a switch button.

When the b button is pressed without pressing the c button, the road type 1 is switched to the road type 2 in (STEP 3), and the road type 2 is displayed in a blinking state in (STEP 4).

Thereafter, (STEP1) to (STEP5) are repeated.

Each time the button b is pressed, the blinking positions are sequentially transferred in the order of (road type 1) → (road type 2) → ... (road type n) → (road type 1) → (road type 2). b
The button is a forward button at the blinking position, that is, the road type.

When the road type is selected with the b button and the c button is pressed, the "arrow selection screen" 40 for the road type which is flashing at that time is switched to. Also, by pressing the a button at any time, this selection operation can be interrupted or terminated, and the "road display screen" can be returned to.

When the mode is switched to the arrow selection mode of (STEP 5), the "arrow selection screen" 40 is displayed and the sub-flowchart of FIG. 8 is executed.

FIG. 8 is a sub-flowchart showing the procedure of arrow selection. This will be described. For example,
As shown in the "arrow selection screen" 40, the first arrow, arrow 1, is blinking. Here, if you press the a button,
It means that the operator has decided the type of the arrow corresponding to the type of the road selected on the “road type selection screen” as the blinking design. Then, to automatically select the type of arrow corresponding to the next road type, the screen returns to the "road type selection screen".

When the button b is pressed, the blinking position moves to the arrow 2 which is the second arrow, and each time the button b is pressed, the blinking position is changed to (arrow 1) → (arrow 2) → ... (arrow m )
→ (Arrow 1) → (Arrow 2) ... That is, it is also an arrow-type forward button. Editing is performed by repeating the selection and determination as described above.

The screen of the "arrow selection screen" 40 is the case where the arrow design is already determined from the combination of "pattern", "thickness", "brightness", and "color". It is also possible to increase the number of d-buttons 50 and use a multi-type pattern editing method by the hierarchical calling method. The method is to call up "pattern" with the 1st button, "shape" with the 2nd button, "color" with the 3rd button, "color scheme" with the 4th button, etc. and edit them in layers.

Further, if the d button 50 is pressed once, "cross-section hatching" is pressed, and if it is pressed twice, different patterns are sequentially called, and the user can freely select from them. You can also do so. In addition, it is possible to respond to public road signs and changes, and to match the signs of the road map that the driver is familiar with or newly purchased road maps, so you can feel no discomfort and drive safely. Can contribute. The flowchart for adding the d button is omitted.

As described above, according to the present invention, it is possible to deal with color weakness and color blindness, which cannot necessarily be dealt with by "color". In addition, a person with low sensitivity to red uses an arrow other than red, and a person with low sensitivity to blue uses an arrow other than blue. For a person who is weak in sensitivity to light of all wavelengths, it is possible to set not only by "color" but also by arrow distinction by "pattern + shape", for example. Furthermore, it is possible to provide a display that is easy to see, such as "brightness" or "color scheme" suitable for the driver or the like.

Further, in the case of a navigation device having beacon receiving means, a navigation map is usually displayed on the display 1, and the driver is driving while looking at this map. Therefore, since the driver is driving while recognizing where he / she is and a wide range of road conditions, it is unlikely to feel any discomfort even if the beacon signal is received and the screen of the intersection information is instantly switched.

However, in the case of only the beacon receiving device, since the map is not displayed on the screen, it is inevitably operated while comparing the map book and the beacon screen. Especially when driving on the road for the first time, the map is a reliable one.
Therefore, it is effective that the familiar hand-held map book and the road type and color scheme of the display are the same so as not to make the driver feel uncomfortable and to prevent erroneous recognition. This embodiment is effective because the multi-type design editing method based on the hierarchical call method allows the driver to edit the screen display in the same color as the map book owned by the driver.

[0036]

According to the present invention, the arrow indicating the branch road type of the intersection is displayed not only by color but also by distinction from the pattern or shape, and the user can freely design the arrow. Since it can be selected to be set according to one's own sight, it is possible to easily inform the road type to a driver with color blindness or color blindness or a passenger who is affected by screen reflection. Also, because the display does not make you feel uncomfortable, it not only prevents driver's misjudgment, but also reduces tiredness in long-distance driving, and also allows the driver's mind to have a margin, making it safe driving. Can contribute.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of intersection information display according to the present invention.

FIG. 2 is a diagram illustrating a road situation at an intersection shown on the screen of FIG.

FIG. 3 is a diagram showing a combination design of destination displays by type and direction of branch roads.

FIG. 4 is a diagram of a beacon signal processing unit of a navigation device having a beacon receiving device or beacon receiving means according to the present invention.

FIG. 5 is a diagram showing an embodiment of a road type selection screen according to the present invention.

FIG. 6 is a diagram showing an embodiment of an arrow selection screen according to the present invention.

FIG. 7 is a flowchart showing a procedure of road type / arrow selection according to the present invention.

FIG. 8 is a sub-flowchart showing the procedure of arrow selection.

[Explanation of symbols]

1 ... Display, 2, 3, 4 ... Arrows, 5 ... Background, 6 ...
Beacon signal processing unit, 7 ... Receiving antenna, 8 ... Beacon demodulating unit, 10 ... Clock recovery circuit, 11 ... Gate array, 12 ... RAM, 13, 17, 18 ... X'tal, 1
4 ... CPU, 15 ... Display IC, 16 ... ROM, 20 ...
Switch interface, 21 ... Operation switch, 22
... VRAM, 30 ... Road type selection screen, 31 ... a button, 32 ... b button, 33 ... c button, 40 ... Arrow selection screen, 50 ... d button,

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Araki 2477 Kashima Yatsu, Takaba, Katsuta-shi, Ibaraki Prefecture 3 Hitachi Automotive Engineering Co., Ltd. (72) Hiroshi Ito Kashima Yatsu Kashima, Katsuta-shi, Ibaraki Prefecture 2477 Address 3 Hitachi Automotive Engineering Co., Ltd. (72) Inventor Shiro Horii 2520 Takaba, Katsuta City, Ibaraki Prefecture Hitachi Automotive Systems Division

Claims (3)

[Claims] 1. A method for displaying intersection information of a road information providing apparatus, which receives a beacon signal from a communication apparatus installed on a road and provides road information, comprising: receiving the beacon signal of the intersection information and branching road of the intersection. The method for displaying intersection information is characterized in that the design of the destination display for each direction of the branch road is changed and displayed according to the type. 2. The intersection information display method according to claim 1, wherein the design of the destination display for each direction of the branch road with respect to the type of the branch road at the intersection is edited in advance. 3. An in-vehicle road information providing device that receives a beacon signal from a communication device installed on a road and provides road information, receives the beacon signal of intersection information, and responds to the type of branch road at the intersection. Then, a vehicle road information providing device is provided with means for changing and displaying a destination display pattern for each direction of the branch road.