JPH11132783A - Onboard navigation device - Google Patents

Onboard navigation device

Info

Publication number
JPH11132783A
JPH11132783A JP9300515A JP30051597A JPH11132783A JP H11132783 A JPH11132783 A JP H11132783A JP 9300515 A JP9300515 A JP 9300515A JP 30051597 A JP30051597 A JP 30051597A JP H11132783 A JPH11132783 A JP H11132783A
Authority
JP
Japan
Prior art keywords
recognition
distance
point
points
voice recognition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9300515A
Other languages
Japanese (ja)
Inventor
Yuji Kaihatsu
発 勇 治 開
Shunichi Chiba
葉 俊 一 千
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9300515A priority Critical patent/JPH11132783A/en
Publication of JPH11132783A publication Critical patent/JPH11132783A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To reduce the recognition processing time and reduce an erroneous recognition by limiting a point or a target of a sound recognition using the distance from a present position and by reducing the recognition target vocabu lary. SOLUTION: The navigation device is provided with a database 103 which stores data of place names and facility names which may be destinations of a vehicle, a sound recognition means 102 which recognizes a plurality of vocabularies of an unspecific speaker's voice, a present position detecting means 104 which detects the present position of the vehicle, and a distance calculating means 105 which calculates the linear distance between two points from coordinates of respective points in the database 103 and the coordinates of the present position, and when a point is retrieved by the sound recognition, the point whose linear distance from the present position is within a prescribed distance is set by a distance threshold set means 106 and the points within the region is recognition processed as the target of the sound recognition.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、車両の目的地を音
声により入力し、目的地までの経路を探索する車載用ナ
ビゲーション装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle navigation device for inputting a destination of a vehicle by voice and searching for a route to the destination.

【0002】[0002]

【従来の技術】図2は従来のこの種のナビゲーション装
置の一例を示すブロック図である。図2において、20
1は音声入力を開始する時と、誤認識した場合に再入力
する時に押下する制御スイッチ、202は不特定話者の
音声を認識する音声認識手段、203は音声認識の対象
となる地名、施設名が格納されているデータベース、2
04は音声認識処理の結果を復唱するための音声合成手
段、205は音声認識により選択された地名、施設名を
車両の目的地として経路を探索する経路探索手段であ
る。
2. Description of the Related Art FIG. 2 is a block diagram showing an example of a conventional navigation device of this type. In FIG.
Reference numeral 1 denotes a control switch to be pressed when starting voice input and when re-inputting when erroneous recognition is performed, 202 denotes voice recognition means for recognizing an unspecified speaker's voice, 203 denotes a place name and facility for voice recognition. Database where names are stored, 2
Reference numeral 04 denotes a voice synthesizing unit for repeating the result of the voice recognition processing, and reference numeral 205 denotes a route searching unit that searches for a route using the place name and facility name selected by the voice recognition as the destination of the vehicle.

【0003】次に上記従来例の動作について説明する。
目的地を音声認識により設定する場合、制御スイッチ2
01を押下し、音声認識モードを起動する。最初に「遊
園地」、「ゴルフ場」などの施設ジャンルを音声で指定
し、次に、指定されたジャンル内の地点をデータベース
203から読み込み、読み込んだデータを全て音声認識
の対象として、音声認識処理が行われる。認識結果は音
声合成手段204により復唱される。認識結果が所望の
結果と一致すれば、これを車両の目的地として経路探索
手段205により経路が探索される。誤認識の場合は、
制御スイッチ201を押下することにより、再度音声入
力することができる。
Next, the operation of the above conventional example will be described.
When the destination is set by voice recognition, the control switch 2
Press 01 to activate the voice recognition mode. First, a facility genre such as "amusement park" or "golf course" is specified by voice, and then points in the specified genre are read from the database 203, and all of the read data are subjected to voice recognition. Processing is performed. The recognition result is read back by the speech synthesis means 204. If the recognition result matches the desired result, the route is searched by the route searching means 205 using the result as the destination of the vehicle. In case of misrecognition,
By pressing the control switch 201, voice input can be performed again.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上記従
来の音声入力方法では、例えば最初に「ゴルフ場」が選
択された場合、音声認識の対象となる地点は、全国のゴ
ルフ場の数だけ存在することになり、認識語数が多いた
めに認識処理に多くの時間がかかり、また誤認識を招き
やすいという問題があった。
However, in the above-described conventional voice input method, for example, when "golf course" is selected first, the number of points to be subjected to voice recognition is equal to the number of golf courses nationwide. As a result, there are problems that the recognition process takes a lot of time because of the large number of recognition words, and that misrecognition is likely to occur.

【0005】また、全国の枠では語数が多すぎるため、
都道府県の階層を追加し、都道府県別で認識語数を限定
して認識処理を行うことも考えられるが、階層が増える
ために発声回数が増えて、結果として操作が複雑になる
という問題があった。
[0005] Also, since there are too many words in the national framework,
It is conceivable to perform recognition processing by limiting the number of recognition words for each prefecture by adding a hierarchy of prefectures.However, there is a problem that the number of utterances increases due to the increase in the number of layers, resulting in complicated operations. Was.

【0006】本発明は、このような従来の問題を解決す
るものであり、認識処理時間を削減し、誤認識を減少さ
せることのできる優れた車載用ナビゲーション装置を提
供することを目的とする。
An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide an excellent in-vehicle navigation device capable of reducing the recognition processing time and reducing erroneous recognition.

【0007】[0007]

【課題を解決するための手段】本発明は、一般に車両の
目的地とする地点は、現在地から数百キロメートルを越
えて設定することは稀であり、通常は、限られた範囲で
設定すると考えられるので、音声認識により地点を検索
する際に、現在位置からの直線距離が一定以内の地点の
みを音声認識の対象として認識処理を行うようにしたも
のである。これにより、認識対象の語彙を削減すること
ができ、認識処理時間を削減し、誤認識を減少させるこ
とができる。
SUMMARY OF THE INVENTION According to the present invention, it is generally considered that a point set as a destination of a vehicle is rarely set over a few hundred kilometers from the current position, and is usually set within a limited range. Therefore, when searching for a point by voice recognition, recognition processing is performed only on points whose linear distance from the current position is within a certain range as a target of voice recognition. Thereby, the vocabulary to be recognized can be reduced, the recognition processing time can be reduced, and erroneous recognition can be reduced.

【0008】[0008]

【発明の実施の形態】本発明の請求項1に記載の発明
は、車両の目的地となる地名および施設名のデータを格
納したデータベースと、不特定話者音声の複数語彙を認
識する音声認識手段と、車両の現在位置を検出する現在
位置検出手段と、前記データベース内の各地点の座標と
現在位置の座標とから2地点間の直線距離を算出する距
離算出手段とを備え、音声認識により地点を検索する際
に、現在位置からの直線距離が一定以内の地点のみを音
声認識の対象として認識処理を行うことを特徴とする車
載用ナビゲーション装置であり、認識対象の語彙を削減
することにより、認識処理時間を削減し、誤認識を減少
することができるという作用を有する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention provides a database storing data of place names and facility names as destinations of a vehicle, and a voice recognition for recognizing a plurality of vocabularies of unspecified speaker voices. Means, a current position detecting means for detecting the current position of the vehicle, and a distance calculating means for calculating a linear distance between two points from the coordinates of each point in the database and the coordinates of the current position. When searching for points, this is a vehicle-mounted navigation device that performs recognition processing only for points whose linear distance from the current position is within a certain distance as a target for voice recognition, and by reducing the vocabulary of the recognition target This has the effect that the recognition processing time can be reduced and erroneous recognition can be reduced.

【0009】本発明の請求項2に記載の発明は、音声認
識の対象とする直線距離範囲を設定する距離閾値設定手
段を備えた請求項1記載の車載用ナビゲーション装置で
あり、利用者の行動範囲に合わせて、音声認識による検
索範囲を任意に設定できるという作用を有する。
According to a second aspect of the present invention, there is provided the on-vehicle navigation apparatus according to the first aspect, further comprising a distance threshold value setting means for setting a linear distance range to be subjected to voice recognition. This has the effect that the search range by voice recognition can be set arbitrarily according to the range.

【0010】本発明の請求項3に記載の発明は、一度目
の音声認識処理時には現在位置とデータベース内の各地
点との直線距離によって音声認識の対象とする地点を限
定し、二度目以降は、距離による地点の限定を行わずに
全ての地点を対象として音声認識処理をすることを特徴
とする請求項1または2記載の車載用ナビゲーション装
置であり、一度目の検索により目的地が検索できない場
合は、検索範囲を広げて検索することにより、効率的な
検索を行えるという作用を有する。
According to the invention described in claim 3 of the present invention, at the first speech recognition processing, points to be subjected to speech recognition are limited by the linear distance between the current position and each point in the database. 3. The in-vehicle navigation device according to claim 1, wherein the voice recognition processing is performed on all the points without limiting the points based on the distance, and the destination cannot be searched by the first search. In this case, there is an effect that an efficient search can be performed by expanding the search range and searching.

【0011】(実施の形態)図1は本発明の実施の形態
における車載用ナビゲーション装置の概略構成を示すブ
ロック図である。図1において、101は音声入力を開
始する時と、誤認識した場合に再入力する時に押下する
制御スイッチ、102は不特定話者の音声を認識する音
声認識手段、103は音声認識の対象となる地名、施設
名が格納されているデータベース、104は車両の現在
位置を検出する現在位置検出手段、105はデータベー
ス103内の各地点の座標と現在位置の座標とから2地
点間の直線距離を算出する距離算出手段、106は音声
認識の対象とする距離範囲を設定する距離閾値設定手
段、107は音声認識処理の結果を復唱するための音声
合成手段、108は音声認識により選択された地名、施
設名を車両の目的地として経路を探索する経路探索手段
である。
(Embodiment) FIG. 1 is a block diagram showing a schematic configuration of a vehicle-mounted navigation device according to an embodiment of the present invention. In FIG. 1, reference numeral 101 denotes a control switch that is pressed when starting a voice input and when re-inputting when erroneous recognition is performed, 102 denotes a voice recognition unit that recognizes the voice of an unspecified speaker, and 103 denotes a voice recognition target. 104 is a current position detecting means for detecting the current position of the vehicle, 105 is a linear distance between two points based on the coordinates of each point in the database 103 and the coordinates of the current position. Distance calculating means for calculating; 106, a distance threshold setting means for setting a distance range to be subjected to voice recognition; 107, a voice synthesizing means for repeating the result of voice recognition processing; 108, a place name selected by voice recognition; This is route search means for searching for a route using the facility name as the destination of the vehicle.

【0012】次に本実施の形態の動作について説明す
る。目的地を音声認識により設定する場合、制御スイッ
チ101を押下し、音声認識モードを起動する。最初に
「遊園地」、「ゴルフ場」などの施設ジャンルを音声で
指定し、次に、指定されたジャンル内の地点をデータベ
ース103から読み込む。読み込んだ各地点に対して、
現在位置算出手段104により算出された現在位置との
直線距離を距離算出手段105により求める。現在位置
の座標を(Xo、Yo)、データベース103上の各地
点の座標を(Xn、Yn)とすると、2地点間の距離
は、√((Xn−Xo)2 +(Yn−Xo)2 )で求め
ることができるが、演算量削減のために√をなくして距
離の2乗を求めてもよい。また、距離を近似的に|Xn
−Xo|+|Yn−Xo|で求めてもよい。なお距離の
単位はメートルに限らず、緯度、経度における分、秒で
あってもよい。ここで計算された距離Aと距離閾値設定
手段106により設定さえた距離Bとを比較し、A<B
となる地点のみ音声認識の対象として、音声認識手段1
02によって音声認識処理が行われる。認識処理の結果
は、音声合成手段107により復唱される。認識結果が
所望の結果と一致すれば、これを車両の目的地として経
路探索手段108により経路が探索される。誤認識の場
合は、制御スイッチ101を押下することにより、再度
音声入力することができる。ここで音声入力を再度行っ
た場合は、距離による認識対象の限定を行わずに、指定
されたジャンル全ての地点を対象として音声認識処理が
行われる。
Next, the operation of this embodiment will be described. When the destination is set by voice recognition, the control switch 101 is pressed to activate the voice recognition mode. First, facility genres such as “amusement park” and “golf course” are specified by voice, and then points in the specified genre are read from the database 103. For each point read,
The linear distance from the current position calculated by the current position calculating means 104 is obtained by the distance calculating means 105. Assuming that the coordinates of the current position are (Xo, Yo) and the coordinates of each point on the database 103 are (Xn, Yn), the distance between the two points is √ ((Xn−Xo) 2 + (Yn−Xo) 2 ), The square of the distance may be obtained without √ in order to reduce the amount of calculation. Also, the distance is approximately | Xn
−Xo | + | Yn−Xo |. The unit of the distance is not limited to meters, but may be minutes and seconds in latitude and longitude. The distance A calculated here is compared with the distance B set by the distance threshold setting means 106, and A <B
Voice recognition means 1
02 performs voice recognition processing. The result of the recognition process is read back by the speech synthesis unit 107. If the recognition result matches the desired result, the route is searched by the route searching means 108 using the result as the destination of the vehicle. In the case of erroneous recognition, by pressing the control switch 101, voice input can be performed again. Here, when voice input is performed again, voice recognition processing is performed on all points of the specified genre without limiting the recognition target based on the distance.

【0013】[0013]

【発明の効果】本発明は、上記実施の形態から明らかな
ように、音声認識の対象となる地点を現在位置からの直
線距離を用いて限定することにより、認識対象語彙を削
減することができ、認識処理時間を削減し、誤認識を減
少することができる。
According to the present invention, as is apparent from the above embodiment, the vocabulary to be recognized can be reduced by limiting the point to be subjected to voice recognition by using a linear distance from the current position. In addition, the recognition processing time can be reduced, and erroneous recognition can be reduced.

【0014】また、音声認識の対象とする直線距離範囲
を設定する距離閾値設定手段を備えることにより、利用
者の行動範囲に合わせて、音声認識による検索範囲を任
意に設定することができる。
Further, by providing a distance threshold setting means for setting a linear distance range to be subjected to voice recognition, a search range by voice recognition can be arbitrarily set in accordance with a user's action range.

【0015】さらに、一度目の音声認識処理時には現在
位置とデータベース内の各地点の直線距離によって音声
認識の対象とする地点を限定し、二度目以降は、距離に
よる地点の限定を行わずに全ての地点を対象として音声
認識処理をすることにより、一度目の検索により目的地
が検索できない場合に、検索範囲を広げて検索すること
により、効率的な検索を行うことができる。
Further, at the first speech recognition processing, the points to be subjected to speech recognition are limited by the linear distance between the current position and each point in the database. By performing the voice recognition processing for the point of, when the destination cannot be searched by the first search, an efficient search can be performed by expanding the search range and searching.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施の形態における車載用ナビゲーシ
ョン装置の概略構成を示すブロック図
FIG. 1 is a block diagram showing a schematic configuration of a vehicle-mounted navigation device according to an embodiment of the present invention.

【図2】従来例における車載用ナビゲーション装置の概
略構成を示すブロック図
FIG. 2 is a block diagram showing a schematic configuration of a vehicle-mounted navigation device in a conventional example.

【符号の説明】[Explanation of symbols]

101 制御スイッチ 102 音声認識手段 103 データベース 104 現在位置検出手段 105 距離算出手段 106 距離閾値設定手段 107 音声合成手段 108 経路探索手段 DESCRIPTION OF SYMBOLS 101 Control switch 102 Voice recognition means 103 Database 104 Current position detection means 105 Distance calculation means 106 Distance threshold setting means 107 Voice synthesis means 108 Route search means

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 車両の目的地となる地名および施設名の
データを格納したデータベースと、不特定話者音声の複
数語彙を認識する音声認識手段段と、車両の現在位置を
検出する現在位置検出手段と、前記データベース内の各
地点の座標と現在位置の座標とから2地点間の直線距離
を算出する距離算出手段とを備え、音声認識により地点
を検索する際に、現在位置からの直線距離が一定以内の
地点のみを音声認識の対象として認識処理を行うことを
特徴とする車載用ナビゲーション装置。
1. A database storing data of a place name and a facility name as a destination of a vehicle, voice recognition means for recognizing a plurality of vocabularies of unspecified speaker voice, and current position detection for detecting a current position of the vehicle. Means, and a distance calculating means for calculating a linear distance between the two points from the coordinates of each point in the database and the coordinates of the current position, and when searching for the point by voice recognition, the linear distance from the current position An on-vehicle navigation device characterized in that the recognition processing is performed only for points within a certain range as a target of voice recognition.
【請求項2】 音声認識の対象とする直線距離範囲を設
定する距離閾値設定手段を備えた請求項1記載の車載用
ナビゲーション装置。
2. The on-vehicle navigation device according to claim 1, further comprising a distance threshold value setting means for setting a linear distance range to be subjected to voice recognition.
【請求項3】 一度目の音声認識処理時には現在位置と
データベース内の各地点との直線距離によって音声認識
の対象とする地点を限定し、二度目以降は、距離による
地点の限定を行わずに全ての地点を対象として音声認識
処理をすることを特徴とする請求項1または2記載の車
載用ナビゲーション装置。
3. In the first speech recognition processing, the point to be subjected to speech recognition is limited by the linear distance between the current position and each point in the database, and after the second time, the point is not limited by the distance. 3. The on-vehicle navigation device according to claim 1, wherein voice recognition processing is performed for all points.
JP9300515A 1997-10-31 1997-10-31 Onboard navigation device Pending JPH11132783A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9300515A JPH11132783A (en) 1997-10-31 1997-10-31 Onboard navigation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9300515A JPH11132783A (en) 1997-10-31 1997-10-31 Onboard navigation device

Publications (1)

Publication Number Publication Date
JPH11132783A true JPH11132783A (en) 1999-05-21

Family

ID=17885757

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9300515A Pending JPH11132783A (en) 1997-10-31 1997-10-31 Onboard navigation device

Country Status (1)

Country Link
JP (1) JPH11132783A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008112439A1 (en) * 2007-03-15 2008-09-18 Motorola, Inc. Reverse map determination of locations and addresses

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0764480A (en) * 1993-08-25 1995-03-10 Honda Motor Co Ltd Voice recognition device for on-vehicle processing information
JPH0942987A (en) * 1995-07-28 1997-02-14 Mazda Motor Corp On-vehicle map display
JPH0950291A (en) * 1995-08-04 1997-02-18 Sony Corp Voice recognition device and navigation device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0764480A (en) * 1993-08-25 1995-03-10 Honda Motor Co Ltd Voice recognition device for on-vehicle processing information
JPH0942987A (en) * 1995-07-28 1997-02-14 Mazda Motor Corp On-vehicle map display
JPH0950291A (en) * 1995-08-04 1997-02-18 Sony Corp Voice recognition device and navigation device

Cited By (1)

* Cited by examiner, † Cited by third party
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