JP3579971B2 - In-vehicle map display device - Google Patents

Description

【００１８】
また、音声特徴データベース２には、例えば下記の表２に記載されているように、正式には「きしねちょう」と呼称すべき漢字名称「岸根町」を有する町名に対して、誤読される可能性が高い「きしねまち」および「町」を省略した「きしね」が正式呼称「きしねちょう」とともに認識対象語として登録されてある。したがって、ドライバが「きしねまち」あるいは「きしね」と発話した場合であっても、「岸根町」周辺の地図を表示装置に表示することができる。同様に、「町」のみでなく、郡、市、村等を省略した他の地名に関しても、正式地名とともに認識対象語として登録される。
【００１９】
【表２】

【００２０】
さらに、音声特徴データベース２には、施設施設の所在地および該施設の属性から検索可能なキーワードが登録されている。例えば「広島市民球場」という正式施設名に加えて「広島の野球場」も認識対象語として登録されてある。したがって、ドライバが「広島の野球場」と発話した場合であっても、現在地から「広島市民球場」への経路を表示装置に表示させることができる。
【００２１】
このように、本実施の形態においては、地名等の正確な呼称に加えて、誤って発話される可能性のある呼称、あるいは省略表現される呼称等を認識対象語として音声特徴データベース２に登録しておくことにより、操作者が地名等に関し不正確な発話をした場合でも、操作者の意図に適合した動作をさせることができるから、音声入力手段を備えたこの種の車載用地図表示装置にありがちな欠点が解消される。
【００２２】
また、施設に関しては、その所在地および該施設の属性から検索可能なキーワードを認識対象語に設定することにより、操作者が正確な名称を知らない施設等の検索にも対応することができる。
【図面の簡単な説明】
【図１】本発明による地図表示装置が適用されるナビゲーション装置の全体構成を示すブロック図
【符号の説明】
１ 地図データベース（地図情報記憶手段）
２ 音声特徴データベース（音声特徴記憶手段）
３ マイクロフォン
４ 音声認識部（音声認識手段）
５ 表示装置（地図表示手段）
６ 経路誘導装置
７ 認識対象語決定部（認識対象語決定手段）
８ 車両位置検出装置
９ 音声出力装置[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a map display device having a voice recognition function, which is suitably applied to an in-vehicle navigation device.
[0002]
[Prior art]
In recent years, an in-vehicle navigation device having a voice recognition function has been developed.
[0003]
In the in-vehicle navigation device equipped with the voice recognition function, the operator inputs the name of the current location, the name of the destination, and the name of the facility, etc., without using a hand, thereby enabling the map information of the current location, the destination, and the like to be input. Since it can be displayed on the display means, it is very preferable for safe driving. For example, in the in-vehicle map display device disclosed in JP-A-3-257485, the information group of the place name displayed on the display device is displayed. By comparing the voice feature with the input voice and displaying map information corresponding to the recognized voice feature, it is possible to easily and reliably input a place name.
[0004]
[Problems to be solved by the invention]
However, in a voice recognition system provided in a conventional navigation device, only data obtained when a place name and a facility name (hereinafter, referred to as “place names, etc.”) are uttered correctly are registered in the voice feature database. If an incorrect or abbreviated name was spoken, it was not accepted by the system. Therefore, if the operator of the navigation device does not know the exact place name or the like, the operation by voice cannot be performed.
[0005]
In view of the above circumstances, the present invention provides a vehicle-mounted map display device capable of performing map operation and information search by voice recognition even when an operator utters a place name or the like erroneously or omits a part thereof. The purpose is to provide.
[0006]
[Means for Solving the Problems]
An on-vehicle map display device according to the present invention includes: a map information storage unit for storing map information; a voice feature storage unit for storing voice features of a group of information such as place names stored in the map information storage unit; A voice recognition unit for comparing the extracted voice feature with a voice feature stored in the voice feature storage unit to recognize a feature of an input voice required for map display; and a map corresponding to the voice feature recognized by the voice recognition unit. A map display means for reading out information from the map information storage means and displaying the information. The recognition target word is obtained by adding an inaccurate name frequently used for the place name to a formal name such as the place name. as, is stored in the speech feature memory means, in the place names include facility name recognition subject words stored in the speech feature memory means retrievable from the location and the property attributes of the facility And it is characterized in that consists of keywords.
[0007]
In this case, the incorrect name such as the place name includes a name that is estimated to be likely to erroneously utter kanji such as the place name.
[0008]
Further, the incorrect names such as the above-mentioned place names include names such as place names that are abbreviated.
[0009]
Further, the abbreviated place name is made up of the place name in which the county, city, town, and village are omitted.
[0010]
【The invention's effect】
According to the present invention, in addition to an accurate name such as a place name or the like, a name that may be erroneously uttered or an abbreviated name or the like is used as a recognition target word, so that the operator does not recognize the place name or the like. Even if an accurate utterance is made, an operation suitable for the operator's intention can be performed, so that the drawbacks of this type of in-vehicle map display device provided with voice input means are eliminated.
[0011]
Further, for a facility, by setting a keyword that can be searched from the location and the attribute of the facility as a recognition target word, it is possible to cope with a search for a facility or the like for which the operator does not know the exact name.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration of a navigation device to which a map display device according to the present invention is applied.
[0013]
The navigation device shown in FIG. 1 includes a map database 1 (map information storage unit) for storing map information, and a voice feature database 2 (voice feature storage unit) for storing voice features of a group of place name information stored in the map database 1. ) And a speech recognition unit 4 that compares a speech feature extracted from a speech input from a microphone 3 as speech input means with a speech feature stored in a speech feature database 2 to recognize features of the input speech necessary for map display. (Voice recognition means), a route guidance device 6 for reading map information corresponding to the voice feature recognized by the voice recognition unit 4 from the map database 1 and displaying the map information on a screen of a display device 5, and a recognition target word determination unit 7 (Recognition target word determination means), a vehicle position detection device 8 including a GPS antenna, a vehicle speed sensor, a gyro, etc., and a driver Directions to, and give appropriate instructions and an audio output device 9.
[0014]
In the present embodiment, the route guidance device 6 has a function of searching for a recommended route to the destination set by the driver and displaying the recommended route on the screen of the display device 5. Further, the current position data, the route data, and the road attribute data are transmitted from the route guidance device 6 to the recognition target word determination unit 7, and the recognition target word determination unit 7 determines the speech recognition target word based on the data. Only the place name information related to only the vehicle traveling area predicted from the preset vehicle traveling route or the current vehicle traveling state is determined, and the determined recognition target word data is transmitted to the voice recognition unit 4. It has become.
[0015]
The map database 1 stores, in addition to map data, voice recognition data of place names in association with latitude and longitude. In addition to the latitude and longitude, the current location data includes vehicle speed, heading data, and the link ID of the road on which the vehicle is traveling. Further, the road attribute data is information on the road on which the vehicle is currently traveling. This is data on attributes (exclusive roads, national roads, prefectural roads, etc.).
[0016]
For example, as shown in Table 1 below, a person who does not know the formal place name has a kanji name “Isawa” that should be officially called “Isawa” in the voice feature database 2. “Isawa” and “Sekiwa” that are likely to be misread are registered as recognition target words together with the official name “Isawa”. Therefore, even when the driver utters “Ishiwa” or “Sekiwa” by mistake, a map around “Ishiwa” can be displayed on the display device.
[0017]
[Table 1]

[0018]
In addition, in the voice feature database 2, for example, as shown in Table 2 below, a town name having a kanji name “Kishinecho” that should be officially called “Kishinecho” is misread. "Kishine", which has a high possibility of omitting "Kishinemachi" and "Town", is registered as a recognition target word together with the official name "Kishinecho". Therefore, even when the driver utters "Kishinemachi" or "Kishine", a map around "Kishine-cho" can be displayed on the display device. Similarly, not only “town” but also other place names omitting counties, cities, villages, etc. are registered as recognition target words together with official place names.
[0019]
[Table 2]

[0020]
Further, in the voice feature database 2, keywords that can be searched from the location of the facility and the attribute of the facility are registered. For example, "Hiroshima baseball stadium" is registered as a recognition target word in addition to the official facility name "Hiroshima stadium". Therefore, even when the driver utters “Hiroshima baseball stadium”, a route from the current location to “Hiroshima stadium” can be displayed on the display device.
[0021]
As described above, in the present embodiment, in addition to an accurate name such as a place name, a name that may be erroneously uttered, or a name that is abbreviated, is registered in the voice feature database 2 as a recognition target word. By doing so, even if the operator makes an incorrect utterance regarding the place name, etc., it is possible to make the operation conform to the intention of the operator. The common disadvantages are eliminated.
[0022]
Further, for a facility, by setting a keyword that can be searched from the location and the attribute of the facility as a recognition target word, it is possible to cope with a search for a facility or the like for which the operator does not know the exact name.
[Brief description of the drawings]
FIG. 1 is a block diagram showing the overall configuration of a navigation device to which a map display device according to the present invention is applied.
1 map database (map information storage means)
2 Voice feature database (voice feature storage means)
3 microphone 4 voice recognition unit (voice recognition means)
5 Display device (map display means)
6 route guidance device 7 recognition target word determination unit (recognition target word determination means)
8 Vehicle position detection device 9 Audio output device

Claims (4)

Map information storage means for storing map information; voice feature storage means for storing voice features of information groups such as place names stored in the map information storage means; and voice features extracted from the input voice to voice feature storage means. Voice recognition means for recognizing a feature of an input voice necessary for map display by comparing the stored voice feature, and reading out map information corresponding to the voice feature recognized by the voice recognition means from the map information storage means; A vehicle-mounted map display device comprising a map display means for displaying,
The official designation of the place names, as the recognition target words a plus incorrect designation frequently used relates該地name, etc., is stored in the speech feature memory means,
The on-vehicle map display device, wherein the place name and the like include a facility name, and the recognition target word stored in the voice feature storage means is a keyword that can be searched from the location of the facility and the attribute of the facility . 2. The in-vehicle map display device according to claim 1, wherein the inaccurate name such as the place name includes a name that is estimated to have a high possibility that a kanji such as a place name is erroneously uttered. 3. The in-vehicle map display device according to claim 1, wherein the inaccurate name such as the place name includes a name such as an abbreviated place name. The on-vehicle map display device according to claim 3, wherein the abbreviated place name is a place name in which a county, a city, a town, and a village are omitted.

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