JPH03175478A - Map display device - Google Patents

Abstract

PURPOSE:To easily display a necessary map by voicing various operation command for the setting of a starting point and destination, etc. CONSTITUTION:The device is provided with a voice recognition means 22 which decides operation command voices required to display a map and a voice data storage means 23 stored with words to be recognized by the voice recognition means 22 by display areas. Then a map display means 4 alters voice data supplied from the voice data storage means 3 to the voice recognition means 22 into data of another area associatively with a change in display area on a map display means 4 to obtain words to be recognized corresponding to the area. Therefore, operation commands required to display the map can be voiced. Consequently, various operations for the setting of a coordinate position, etc., are easily performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a map display device suitable for application to an automobile navigation device.

[Summary of the invention]

The present invention provides a map display device capable of voice recognition suitable for application to an automobile navigation device, in which a voice is supplied from a voice data storage means to a voice recognition means in conjunction with a change in the display area of the map display means. The data is changed to that of another area, and the voice recognition target word is changed to that of the corresponding area, so that operation commands can be easily given by voice.

[Conventional technology]

In recent years, as a navigation device installed in automobiles,
Various types have been developed. For example, the position of your own army is determined by detecting the direction of travel of this vehicle from its starting point, the distance traveled, etc., and a road map in the vicinity of the determined position of your own vehicle is stored on a
Information from a mass storage device such as a ROM device is displayed on the screen of a display device such as a CRT. Such a method of detecting the position based on the driving state of the own vehicle is called inertial navigation or self-sustaining navigation. Additionally, a system has been developed that receives a reference radio signal from an artificial satellite or the like, detects the absolute position, and displays a road map using the detected position as the vehicle's position.

In this case, in order to display a map of the area desired by the operator, such as the expected arrival point, it is necessary to specify the coordinate position to be displayed by operating an operation key provided on the device.

[Problem to be Solved by the Invention] However, the operator of such a navigation device is often a car driver, and it is difficult to input detailed coordinate positions while driving using operation keys. It was impossible. For this reason, the applicant of the present invention previously proposed a map display device in which the coordinate position can be easily indicated using a bar code or the like (Japanese Patent Laid-Open No. 1-1/11312). However, there is a demand for making it easier to set coordinate positions.

An object of the present invention is to easily perform various operations such as setting coordinate positions.

[Means to solve the problem]

The map display device of the present invention is, for example, as shown in FIG. A voice recognition means (22) for determining the operation command voice necessary for display;
) is provided, and an audio data storage means (23) is provided that stores recognition target words for each display area, and a map display means (23) is provided.
In conjunction with the change in the display area in step 4), the voice data supplied from the voice data storage means (23) to the voice recognition means (22) is changed to that of another area, and the target word for voice recognition is changed to that of the corresponding area. It was designed so that it belonged to

[Function] By doing this, it is possible to issue operation commands necessary for displaying the map by voice. In this case, in conjunction with the change in the display area on the map display means, the audio data supplied from the audio data storage means to the voice recognition means changes to that of the corresponding area, so that the voice recognized by the voice recognition means changes. The words to be recognized change according to the display area of the map, increasing the number of types of speech that can be recognized, and enabling a sufficient search using speech.

〔Example〕

Hereinafter, one embodiment of the map display device of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram showing the entire navigation device to which the map display device of this example is applied, and (1) in the figure indicates a car (
(not shown) shows a direction detection device for detecting the traveling direction of the
(2) shows a travel amount detection device that detects the travel amount. A geomagnetic sensor or a gyroscope is used as the direction detection device (1), and a distance meter that detects the rotation of a tire or the like is used as the travel distance detection device (2).

In addition, (3) in the figure shows a CD ROM device, and this CD
The ROM device (3) is equipped with a CD ROM that stores road map information from all over the country converted into vector data, and receives instructions from the CD ROM controller (13) in the arithmetic processing unit 10), which will be described later. Accordingly, predetermined information stored in the CD ROM is read out by this CD ROM device (3). In this case, road map information and the like are stored in the CD ROM by dividing the information into a plurality of parts for each predetermined area. That is, as shown in FIG. 2, for example, the whole country is divided into areas A II+ A, □, A, 3, etc., each having the same range size, and each of these areas A++, Al□ 7! t...
3. Road map information etc. are stored every time. At this time, each area AAH2, A13, . . . is made a relatively narrow range, and detailed road map information is stored. and,
In order to display a wider map, each area A1□
, A1□A13... area BI larger than the range
I+ B11B, 3... are set, and each area B, , B, □.

Road map information etc. for each B11... are also stored. In this wide area B II+ Bl□+Bl:l..., for example, as shown in FIG. 3, one area is each area Az, A+□ /! 1. , 3, etc., and only main road information such as arterial roads is stored. Also, if necessary, this area B
In order to display a map of a wider area than l l +B1□, B13, etc., areas divided into larger ranges may be set.

And a direction detection device (1) and a traveling distance detection device (2)
The detection information obtained in the CD ROM device (3) and the road map information read out by the CD ROM device (3) are supplied to the arithmetic processing device (10).

This arithmetic processing unit (lO) is equipped with a current position calculation circuit (11) to which direction detection information and traveling distance detection information are supplied, and the current position calculation circuit (11) uses inertial navigation to determine the current position based on the rain detection information. Find the position by calculation.

In this case, operation keys (5) and a voice recognition device (20) are connected to the arithmetic processing device (10) for setting various coordinate positions such as the starting position of the own vehicle and the target position. The coordinate position information at the start of the run set by the operation of this operation key (5) and the voice recognized by the voice recognition device (20) is transmitted to the system controller (15).
The signal is supplied to the current position calculation circuit (11) via the current position calculation circuit (11). Then, the current position calculation circuit (11) moves the coordinate position by an amount indicated by the direction detection information and the traveling distance detection information from the coordinate position at the start of travel to determine the current position by inertial navigation.

Here, to explain the voice recognition device (20), a microphone (6) is connected to this voice recognition device (20), and a voice signal picked up by this microphone (6) is transmitted to an amplifier (21).
) to the recognition processing circuit (22). A voice data memory (23) is connected to this recognition processing circuit (22), and it is checked whether the voice data supplied from the voice data memory (23) and the human voice signal match under certain conditions. and perform voice recognition work.

In this case, the reading of audio data from the audio data memory (23) is performed by the system controller (15). That is, the audio data memory (23) stores the areas AII, AI□, A13, .
The audio data is stored in blocks corresponding to the data of IILI B+3..., for example, area A1
The block corresponding to H stores audio data such as town names, intersection names, station names, and targets (main buildings) existing in this area A. Also, area A + + +Al
l AI: Area B11B wider than l...
The blocks corresponding to IZ, B13, . . . store voice data such as city names, major intersection names, and major landmarks existing in each area. Note that approximately several dozen words of audio data are stored in blocks corresponding to each area. Then, the system controller (15) reads the CD ROM via the CD ROM controller (13), which will be described later.
Determine the area being read from II device (3),
The audio data of the block corresponding to this readout area is read out from the audio data memory (23), and the recognition processing circuit (
22). Therefore, CD R
When the area being read from the OM device (3) changes to another area such as an adjacent area, the recognition processing circuit (
The audio data determined in step 22) also changes to correspond.

Furthermore, the road map information read out by the CD ROM device (3) is stored in the buffer memory (12) in the arithmetic processing unit (10).
) to the current position calculation circuit (11), and the current position calculation circuit (11) performs a current position correction operation called map matching based on the registered road information in this road map information. .

The current position information set in the current position calculation circuit (11) in this way is then transmitted to the display controller (1).
4). This display controller (14
) is a circuit that controls the display of road maps, etc., on the display device (4) based on commands from the system controller (15). controller(
Based on the road map information supplied to the display controller 14), the road map is displayed on the display device (4), and the current vehicle position is displayed on this display map based on the current position information supplied to the display controller (14). Display.

In this case, when reading the road map information from the CD ROM device (3), the system controller (15) determines the current position obtained by the current position calculation circuit (11) and reads the road map information in the area near the current position. Information is controlled by a CD ROM controller (13). In this case, in this example, the map is always displayed centered on the own vehicle position.

That is, for example, as shown in FIG. 2, when the current position of the vehicle is at point α on area A31, in order to evenly display the area around point α, area A21. Area A2□,
Area A31. CD with data of 4 areas A and 2
It is read out from the ROF device (3) and displayed uniformly around point α as shown by the broken line. Assuming that the current position moves to point β on area A2□ as the car travels, at this time, area A11. Area A, □,
The data of the four sections of area AZ l + area A2 □ are read out from the CD ROM device (3) and displayed evenly around point β as shown by the broken line.

Furthermore, when the display mode is set to display a wider area, as shown in FIG.
2. From the data divided into B, 3, . . . , four sections of data around the α point and β point are read out, and a wide area is displayed as shown by the broken line.

Next, to explain the operation when displaying a map with the navigation device of this example, in this example, the voice recognition device (20) is used to search for a target position, set the own vehicle position, etc. Various instructions can be given for this purpose. That is, for example, when searching for a target position, the driver of the car speaks the name of the town of the target position into the microphone (6), and the recognition processing circuit (22) recognizes this voice, and the system controller (15) ) is supplied with data such as target points. In this case, the search position such as the target position is generally in the vicinity of the current position, and the recognition processing circuit (22) corresponds to the area being displayed on the display device (4).
) can perform voice recognition work from the voice data supplied to the system. However, if the target position is outside the area being displayed, the scale of the displayed map is temporarily changed to one that displays a wide area.

Namely, area 7! i, II+ AI□, A13...
When displaying a map at a scale based on road map data of . . . , the display is changed to a map display at a scale based on road map data of areas BII+ BI2 + B13 . . . where wide-area display is performed one rank higher. In this state, for example, speak the name of the city at the search location to have it recognized, display a display centered on this city, and then select Area A I again.
The map display is returned to the one based on the road map data of I+A+z+AI3... At this time,
The center point should not change even if the display range changes.

Therefore, the details of the searched city are Area A + +,
AHz.

It will be displayed based on the road map data of A, 3, etc., and by speaking the name of the target point (town name, intersection name, etc.) in the currently displayed area, you can recognize this target. The map will be displayed centered on the point.

In addition, road map data that displays an even wider area than areas B, , B, □, B13, etc. can be stored on a CD ROM.
When the location name is stored in the location, a wider area may be displayed, and a voice search may be performed for a place name at a higher level, such as a prefecture name. For example, set the display to the widest area, first specify the name of the prefecture where the target point you want to search is located using voice recognition, display the display centered on the corresponding prefecture, and then scale down one rank lower. In this state, the city name is specified by voice recognition, and the display centers on the corresponding city. After switching to a display with a scale one rank lower in this display state,
A specific target point name such as a town name can be specified using voice recognition, and the display can be centered around the corresponding target point.

By doing this, you can search by voice no matter where the target point is in the country. In this case, the recognition processing circuit (22) of the speech recognition device (20) can recognize and process only a few dozen words at a time, but the words to be recognized change in conjunction with changes in the display area and display scale. So,
You can search by voice anywhere in the country.

In the above-described embodiment, the departure point and destination are set using voice recognition, but other operations required by the navigation device of this example may also be performed using voice recognition. Furthermore, although the voice data memory (23) included in the voice recognition device (20) is separate from the CD ROM device (3), the voice data is stored in the CD ROM device (3) along with the map data of each area. , this CD ROM
It may be read out from the device (3).

Further, in the above-mentioned embodiment, the present invention is applied to a navigation device that performs position detection using self-contained navigation, but it is of course applicable to other types of navigation devices.

Furthermore, it goes without saying that the present invention is not limited to the above-mentioned embodiments, and may have various other configurations.

〔Effect of the invention〕

According to the present invention, various operational commands such as setting the departure point and destination can be given by voice, so the required map can be easily displayed, and safety can be maintained even while driving. It can be operated in a leaning position and is suitable for automobile navigation devices. In this case, the words to be recognized change in conjunction with the changes in the map display area, so even if the speech recognition device can only recognize and recognize only a few dozen words at a time, it is necessary to use voice recognition alone. It is possible to issue operation commands such as:

[Brief explanation of drawings]

Fig. 1 shows the constituent countries of an embodiment of the map display device of the present invention, Figs. 2 and 3 are explanatory diagrams showing the display area of the embodiment, and Fig. 4 shows the voice data memory of the embodiment. It is an explanatory diagram showing a storage state. (3) is a CD ROM device, (4) is a display device, (6) is a microphone, (10) is an arithmetic processing unit, (20) is a voice recognition bag holder, (22) is a recognition processing circuit, (23) is It is an audio data memory. Agent Hidemori Matsukuma Figure 1

Claims (1)

[Scope of Claims] A map display device for displaying a map by a map display means based on map data read from a predetermined map data storage means, comprising: a voice recognition means for determining an operation command voice necessary for map display; voice data storage means storing recognition target words to be recognized by the voice recognition means for each display area; A map display device characterized by changing the supplied audio data to that of another area and making the speech recognition target word the corresponding word.