JPH02195375A - Road map marking system - Google Patents

Abstract

PURPOSE:To prevent troubles caused by oscillation from occurring by displaying symbols, etc., which indicate a road map and a target based on data stored in an IC card. CONSTITUTION:The IC card 2 is previously stored with the data A such as symbols which indicate the prescribed data of the road map and the target. Besides, at the time of displaying the road map, etc., stored in the IC card 2, the data A stored in the IC card 2 is electrically read out by a data reading out means 3. Moreover, a display device 7 displays symbols, etc., which indicate the road map and the target based on the data A read out by the data reading out means 3. Since a storage means (the IC card 2) and a control part 5 are electrically connected by constituting the data storage means of the IC card 2, in such a way, troubles caused by oscillation is prevented from occurring.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a road map display system that displays a road map or the like based on data stored in a storage means.

(Prior Art) A conventional road map marking system of this type includes a data reading means for reading data stored on a floppy disk, a CD (compact laser disc), etc., and a data readout means for reading out data stored in a floppy disk or a CD (compact laser disc). a display device that performs a display based on the data, and the floppy disk or CD stores road map data and data such as symbols representing targets, and the road map and symbols representing targets are displayed on the display device. is displayed.

Furthermore, the road map display system is mainly used as a small device mounted on a vehicle.

(Problems to be Solved by the Invention) However, the conventional road map marking system has the following problems.

When a road map marking system that uses a floppy disk as a data storage means is used as an in-vehicle device, the floppy disk is susceptible to vibration, and the data memory written on the floppy disk may be destroyed while the car is running. Put it away.

Furthermore, a road map marking system using a CD as a data storage means is an expensive device with high manufacturing costs. Furthermore, since the data reading means includes a mechanical part, it is prone to failure. For this reason, it is not yet widespread.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a road map marking system that is less likely to malfunction when used as an in-vehicle device and can be widely used.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an IC that stores road map data and data such as symbols representing targets.
a card, a data reading means for reading data stored in the IC card, and a display device for displaying the road map and symbols representing targets based on the data read by the data reading means. A road map marking system was constructed.

(Function) According to the present invention, predetermined road map data and data such as symbols representing targets are stored in the IC card in advance. Further, when displaying a road map or the like stored in the IC card, the data stored in the IC card is electrically read out by a data reading means,
Furthermore, a road map, symbols representing targets, etc. are displayed on the display device based on the data read out by the data reading means.

(Example) Fig. 1 is a block diagram showing an embodiment of the present invention, and Fig. 2 is an external view of a road map display device according to an embodiment of the present invention. Main body (hereinafter referred to as main body), 2 is an IC card equipped with a RAM and a backup battery, 3 is an IC card reader section, 4 is an operation section, 5 is a control section, 6 is a character generator section, 7 is a display section, 8 is I
An insertion slot for the C card 2, 9 is an IC card ejection button.

The main body 1 includes a metal case, and on the front thereof, an operating section 4 consisting of a scroll switch '41 and a mode switch 42, which will be described later, a display section 7, a card insertion slot 8, and an IC card ejection button 9 are arranged.

The IC card reader 7 section 3 reads data A such as a road map stored in the IC card 2 inserted through the card insertion slot 8 under the control of the control section 5 and outputs it to the control section 5 .

The operation unit 4 includes a scroll switch 41 and a mode switch 4.
2, and outputs on/off information B of these switches to the control section 5. The scroll switch 41 is
It consists of four scroll switches 41a to 41d representing up, down, left and right corresponding to the scrolling direction of the display screen. Further, the mode switch 42 is a switch for setting the scale ratio of the display screen, and includes a reduction switch 42a1, a standard switch 42b,
and an enlargement switch 42c. The reduction switch 4
By pressing 2a, a wide-area road map or the like is displayed on the display screen, and by pressing the enlarge switch 42c, a narrow-area road map or the like is displayed. Further, by pressing the standard switch 42b, a road map or the like is displayed at a preset standard scale.

The control unit 5 controls the IC card reader 7 unit 3, reads data A stored in the IC card 2, and outputs display control data C to the character generator unit 6 based on this data A and switch information B. .

The character generator section 6 receives display control data C from the control section 5, creates display data D based on the display control data C, and outputs this to the display section 7.

The display section 7 is composed of a liquid crystal display, and performs display based on the display data D.

Next, the operation of this embodiment will be explained based on the control flowchart shown in FIG.

In the IC card 2, road map data of a predetermined area and data representing symbols of landmarks and the like are written in advance. This IC card 2 is inserted into the card insertion slot 8.

The control unit 5 constantly monitors whether the IC card 2 is inserted through the IC card reader 7 unit 3 (Sl). I
When the C card 2 is inserted from the card insertion slot 8 and connected to the IC card reader 7 section 3, the control section 5 controls the inserted I/C card 2.
It is determined whether the C card 2 is a valid IC card (S2). As a result of this determination, if the IC card is not a valid IC card, the display section 71 outputs display control data C for displaying "Unauthorized Card Insertion" to the character generator section 6 (S3).

If the result of the judgment in S2 is that a valid IC card has been inserted, the data A is read out from the IC card 2 via the IC card league unit 3 (S4). Based on this data A, a road map etc. is created as a standard. display on display section 7 in mode (S
5).

Next, the control unit 5 determines whether or not the scroll switch 41 is pressed (S6).
When any one of the four switches 41a to 41d is pressed down, the screen is scrolled in the direction corresponding to the pressed switch while the switch is pressed down (S7).

If the result of the determination in S6 is that none of the scroll switches 41 has been pressed, it is determined whether the mode switch 42 has been pressed (S8). As a result of this determination, the three switches 4 of the mode switch 41
When any of the switches 2a to 42c is pressed, the screen is displayed at a scale factor corresponding to the pressed switch (S9).

If the result of the determination in S8 is that none of the mode switches 42 has been pressed, the process proceeds to S6.

The above control is performed by the control unit 5, and road maps, target symbols, etc. are displayed on the display unit 7 based on the data stored in the IC card 2.

Moreover, when the IC card 2 is taken out from the card insertion slot 8, the IC card 2 is ejected from the card insertion slot 8 by pressing the card ejection button 9.

Further, in this embodiment, one IC card insertion slot 8 is provided, but two or more IC card insertion slots may be provided so that the IC card to be read can be switched.

Further, in this embodiment, an IC card consisting of a static RAM and a battery is used, but it goes without saying that the present invention is not limited to this.

In the present invention, since the data storage means is constituted by the IC card 2, the data storage means (IC card 2) and the control section 5 are electrically connected not through a mechanical interface but through the IC card reader section 3. , there will be no failure due to vibration.

Furthermore, an IC card storing road maps and the like for each region can be easily produced at low cost.

(Effects of the Invention) As explained above, according to the present invention, there is provided an IC card storing road map data and data such as symbols representing targets, and a data readout device for reading data stored in the IC card. and a display device that displays symbols representing the road map and targets based on the data read out by the data reading out means. Since there are no external parts, the external size of the device can be made smaller, and failures due to vibration will not occur. Furthermore, it becomes possible to easily produce IC cards storing road maps and the like for each region at low cost. This has the advantage that the road map marking system can be widely disseminated.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is an external view of a road map marking device according to an embodiment of the invention, and FIG. 3 is a control flowchart of the embodiment. DESCRIPTION OF SYMBOLS 1...Main body, 2...IC card, 3...■c card reader part, 4...Operation part, 5...Control part, 6...
・Character generator section, 7...Display section, 8...
・Card insertion slot, 9...Card ejection button.

Claims (1)

[Scope of Claims] An IC card storing road map data and data such as symbols representing targets, a data reading means for reading out the data stored in the IC card, and an IC card that is read out by the data reading means. 1. A road map display system comprising: a display device that displays symbols representing the road map and targets based on data obtained from the road map.