JPS5915814A - Guiding device for running - Google Patents

Abstract

PURPOSE:To enable the automatic renewal of a displayed map in accordance with running, by making a cartridge store various informations, and by using these informations for the automatic retrieval of the map and for correction of the detected informations of a geomagnetic sensor. CONSTITUTION:Informations accompanying the recorded content of a cartridge 11 are stored in ROM 12 and read out by a control section 23. Information on the reducee scale of a map and addresses on a film frame which is called out in a projection window 11c of the catridge 11 are also utilized for calculations. These information are used for the retrieval of the map, and an operation of adjusting the reduced scale of the map projected on a screen 25 with that of a track display by an LCD display 24, and other operations are performed. The informations on the declination and the angle of depression of geomagnetism in the region in the map projected on the screen 25 are also read out from ROM 12, and the correction of the informations of a direction sensor 22 is performed based thereon. Thus, the direction of running can be known accurately on the basis of the detected informations of the sensor 22.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a travel guidance device that displays a travel trajectory superimposed on map information.

Recently, a travel guidance device installed in vehicles and the like has been developed.

This device detects the running direction and speed of a vehicle using a direction sensor and a speed sensor, and a control section comprising a microcomputer calculates a running route based on information from the sensors. Based on the calculation results of the control section, the travel route appears as a locus on an LCD (liquid crystal) display panel or the like. At the same time, map information is displayed along with this trajectory, and by overlaying this image display, it is possible to check the driving status and current position. Further, it has been considered that microfilm is used as a means for displaying the map information. Microfilm is stored in multiple cartridges, and the entire country of Japan is divided into several blocks, with one region recorded on each frame of microfilm in one cartridge. Also,
The device is equipped with a projection mechanism for projecting the information on the microfilm, and the film information is projected onto a screen that is integrated with an LCD display panel.

When using microfilm, it is necessary to provide information such as the cartridge number, map scale, and map address to the control unit so that it can automatically update the map and match the scale of the travel trajectory with the map. Furthermore, if a geomagnetic sensor is used as a direction sensor, it is necessary to provide information on the declination and inclination of the geomagnetism in the area corresponding to each map so that automatic correction can be performed. Conventionally, this information was stored in a ROM (Read 0
A method has been considered in which the cartridge type is stored in a memory unit (fixed storage device) and the cartridge type is recorded on the cartridge side.

That is, as shown in FIG. 1, a display structure 2 indicating a type code is provided on the side of the projection window 1a of the cartridge l. However, with this method, a huge amount of information corresponding to multiple cartridges (information about maps all over Japan) can be obtained.
is stored in one ROM, and a large capacity RO
You will have to use M. Therefore, the control unit becomes larger and the circuit inside the device becomes more complicated.

The present invention is intended to solve the above-mentioned conventional problems, and it is possible to provide information regarding each map to the CPU without providing a storage device on the device main body side, simplifying the circuitry on the main body side. The purpose of this invention is to provide a travel guidance device that achieves this goal.

The present invention is characterized in that the cartridge containing the film is provided with a storage device that stores information associated with the recorded contents.

Hereinafter, embodiments of the present invention will be explained with reference to the drawings starting from FIG.
I will clarify.

FIG. 2 shows a perspective view of the cartridge 11, which is a feature of the present invention. A microfilm is housed in this cartridge 1, and road maps are recorded at various scales on each frame of this microfilm. 1 car) IJ Tsuji 11 has 1 Japanese car.
Maps for three regions are recorded, and a plurality of cartridges 11 corresponding to all of Japan are prepared. The upper part of the cartridge 11 is the winding part 11a, and the lower part is the supply part 1.
1b, and a projection window 11c is formed at an intermediate position. Then, a ROM 12 is installed on the side of the projection window 11c.
and an edge terminal 13 connected to this. This ROM 12 contains the cartridge number, the address of each frame of the film, the scale of each frame, and the declination of the earth's magnetic field in the area corresponding to the map of each frame.
Information such as angle of inclination is stored.

FIG. 3 is a block diagram showing the components of the travel guidance device. The speed sensor 21 is installed in the engine room of an automobile, and detects the rotational speed of the wheels and the like. Direction sensor 2
2 is installed on the roof of the vehicle body, and in this embodiment, a geomagnetic sensor is used. Control unit 23
is based on a microcomputer, and is installed in the vehicle body or a display device 31, which will be described later.

A display device 31 shown in FIG. 4 is installed inside a vehicle or the like. The screen 31a of the display device 31 has an LCD (
A liquid crystal panel 24 and a screen 25 are installed integrally. Moreover, a projection mechanism 26 consisting of a halogen lamp, a group of lenses, etc. is built into the display device 31. This projection mechanism 26 allows film information to be projected onto the screen 25. Also,
On the front surface of the display device 31, operating members such as a power switch 32a1, an illuminance control switch 32b, and a film search switch 32c are arranged.

car) The IJ edge 11 is inserted into the insertion slot 3 on the side of the display device 31.
It is loaded from 1b. A film retrieval mechanism (not shown) is housed inside the insertion opening 31b.

Next, the operation and effects of the present invention with the above configuration will be explained.

When using this travel guidance device, first, the cartridge 11 in which a map of the region in which the vehicle is traveling is recorded is loaded into the display device 31. As a result, cartridge 1
The sprawl in the winding section 11a and the supply section 11b of 1 is connected to a film search mechanism in the display device 31. At the same time, the ROM 12 is connected to the control section 23 via an edge terminal 13 provided in the film cartridge 11.

When traveling, the film search switch 32c is operated to operate the film search mechanism, and among the frames of the microfilm in the cartridge 11, the frame on which a map corresponding to the regular area is recorded is called up to the projection window 11c. . The recorded contents of the film frames appearing in the projection window 11c are projected onto the screen 25 by the projection mechanism 26. On the other hand, information such as running speed and running direction is provided by a speed sensor 21,
The direction sensor 22 detects the information, and the control unit 23 calculates the travel route based on this information. Then, based on the calculation output from the control section 23, the travel trajectory is displayed as dots on the LCD display panel 24. On the screen 31a of the display device 31, the map information on the screen 25 and the locus display on the LCD display panel 24 are displayed so as to be visible in an overlapping manner.

Further, the ROM 12 stores information accompanying the recorded contents in the cartridge 11, and this information is stored in the control unit 2.
3. Then, the cartridge number is input, and information such as the map scale and map address of the film frame that is still called out to the projection window 11c of the cartridge 110 is also used for calculation. Then, this information is used for map search, and the scale of the map displayed on the screen 25 and the trajectory displayed on the LCD panel 24 is adjusted. Information such as the declination and inclination of the earth's magnetic field in the area corresponding to the map displayed on the screen 25 is also read out from the ROM 12, and the direction sensor 2
Corrections are made to the information from 2. Therefore, when driving in an area corresponding to a map, the driving direction can be accurately determined based on the information detected by the direction sensor 22.

In the illustrated embodiment, the recorded information on the microfilm is projected onto the screen 25 by the projection mechanism 26, but the microfilm in the cartridge is photographed close-up with an image pickup tube, and the film information, that is, the map, is projected onto the screen 25 by the projection mechanism 26.
(Thode Ray Tube) display device,
In addition, it may be of a type in which the travel trajectory is displayed on the screen superimposed on the map based on a signal from the control unit 23.

As described above, according to the present invention, the cartridge is provided with a storage device that stores various information, and when the cartridge is loaded into the device main body, the storage device and the control section on the main body side are connected. This information allows automatic map searches,
It becomes possible to appropriately correct the information detected by the geomagnetic (orientation) sensor. Therefore, it is also possible to automatically update the displayed map sequentially as the vehicle travels.

Fortunately, the information associated with each map is distributed to each cartridge, so the storage capacity on the main body of the device is small. It still has the effect of not requiring manual input such as cartridge number keys, making operation easier.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a cartridge used in a conventional travel guidance device, FIG. 2 is a perspective view of a cartridge used in a travel guidance device according to the present invention, and FIG. 3 is a structural member of the travel guidance device according to the present invention. FIG. 4 is a perspective view of the display device. 11...Cartridge, 12...Storage device, 13
...Terminal, 21...Speed sensor, 22.
... Direction sensor, 23 ... Control unit, 31 ... Display device, 31a ... Screen applicant Alps Electric Co., Ltd.

Claims (2)

[Claims] (1) A sensor that detects travel information, a control unit that calculates a travel route based on signals from the sensor, a cartridge that stores a film that records map information, and a travel trajectory based on the calculation results of the control unit. and a display mechanism for superimposing map information on the film and displaying it in a visible position, wherein the cartridge is provided with a terminal for connecting a storage device for the map recorded on the film to the control section. A travel guidance device featuring: (2) A geomagnetic sensor is used as a sensor to determine the driving direction, and the storage device contains the cartridge number, map scale, and map address, as well as the geomagnetic declination and geomagnetic declination in the area corresponding to the map. A travel guidance device according to claim 1, wherein information such as an angle of inclination is stored.