JP2002131061A - Information exchange method and information exchange method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure safety to transmit useful information in a system in which an on-vehicle terminal performs information exchange with an information storage and provision center. SOLUTION: A center side 100 is provided with means 120, 130, 140 for processing and storing information transmitted from the on-vehicle terminal to a means 110 when the classification of the on-vehicle terminal 200 is judged and the contents 130 of a description manner response to the classification are transmitted. The on-vehicle terminal side 200 is provided with means 220, 250 analyzing contents transmitted from the center side, automatically transmitting sensor information in response to the contents and transmitting information input from a user.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology for transmitting and collecting information to the Internet or the like by a vehicle-mounted terminal, and more particularly, to transmitting and receiving information while ensuring the safety of driving of a driver. -It relates to the information exchange method and the information exchange system to be presented.

[0002]

2. Description of the Related Art Due to the development of the information distribution industry and mobile communication technology, only passive information access such as radio and car navigation information is available in a social situation where a huge amount of information sources can be accessed anytime and anywhere even in a car such as an automobile. Instead, media capable of two-way access, such as mobile phones and e-mail, have been introduced. Then, safety is becoming an issue there, and it is obligatory to use a hands-free device together with a mobile phone. In addition, character input means such as an e-mail is designed to be sent in a sentence selectable manner, and cannot be used unless the vehicle is stopped in principle.

[0003] On the other hand, in a car navigation system compatible with i-mode (registered trademark), a Web interface is provided via a car navigation interface.
Browsing and sending and receiving e-mails are becoming possible. As an interface for a car navigation system or the like, speech recognition is mainly employed, and a technique of dynamically constructing a speech environment file for improving a recognition rate is used.

[0004]

In the prior art,
There are significant restrictions on transmitting information from inside the vehicle. For example, there is a problem that a selection sentence when creating a mail transmission sentence is limited, and cannot be formed from the selection sentence depending on the contents of transmission. In addition, in order to expand the range of speech recognition, it is necessary to increase the number of candidate words for speech recognition, which has a problem of a trade-off with a decrease in recognition rate. In addition, it is necessary to manually input important information in information exchange in mobile communication, such as the position, speed, and time, and there is a problem that a user wastes time.

[0005] The present invention solves the above-mentioned problems in information transmission from the inside of a vehicle, and provides a voice recognition method, selection sentence composition, and automatic input support according to contents, thereby ensuring security. , To improve accessibility to comfortable information.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a system for transmitting and receiving information by a vehicle-mounted terminal arbitrarily communicating with an information storage / providing center, the content description supporting a user in a vehicle to transmit information. The main feature is to have a language and a browser to analyze and execute it.

[0007] The present invention also relates to a center side (server side).
Includes an analyzing unit for analyzing information transmitted from an office / home terminal, an extracting unit for extracting a Key word from the analysis result, and a registering unit for registering the same as a selected word when transmitting from the inside of the vehicle to a content. The main feature is to have.

[0008] Further, according to the present invention, the vehicle-mounted terminal side dynamically creates speech recognition candidate words using speech recognition words and categories described in the content transmitted from the center side. The main feature is having a means.

Further, according to the present invention, the in-vehicle terminal transmits information extracted from various sensors according to the automatic input format described in the content transmitted from the center without the user's hand. The main feature is that it has automatic input processing means.

Further, according to the present invention, the vehicle-mounted terminal has a microphone mounted on the vehicle and communication means for transmitting voice or sound acquired from the microphone to the center, and the center has storage means for storing the same. The main features are that it has a recognizing means for recognizing voice if it is voice, and a distribution means for distributing the accumulation or recognition result. The main feature of the center is that if the sound is sound, the sound is accumulated and distributed with a link to the content.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of an information exchange system according to the present invention.
The system is roughly divided into a center facility 100 as an information storage / providing center and a vehicle terminal facility 200 as an on-board terminal. The center equipment 100 processes and accumulates information transmitted from the office / home and the vehicle terminal equipment 200, which is omitted in FIG. 1, and transmits content to the vehicle terminal equipment 200 according to the type of the vehicle-mounted terminal. It has a function of transmitting contents in a corresponding description format. The vehicle terminal equipment 200 analyzes the content sent from the center equipment 100 and automatically transmits information extracted from various sensors or the like according to the content, or transmits information input by a user. Have.

The opportunity for the center equipment 100 to transmit the content to the vehicle terminal equipment 200 is, for example, in the following case. 1. Sent in response to a request from the user. 2. Frequently asked questions are first sent as fixed phrases when the user activates the in-vehicle terminal. 3. Detects position information on the vehicle side, etc., and transmits when it reaches a predetermined position. 4. An expiration date is set for the content (such as a bulletin board) and transmitted to all users who have accessed the content up to that time.

First, the configuration and operation of the center facility 100 will be described in detail. The center equipment 100 is roughly divided into a transmission processing unit 110, an item extraction unit 120, a content database 130, a sound processing unit 140, and a communication unit 150. The center equipment 100 can be connected to each terminal via the Internet 300 or a communication line, and can be accessed from an office / home or a terminal in a car. A user accessing from an office or home accesses contents and exchanges information in the same manner as in a conventional Internet environment.

The item extracting unit 120 receives data analyzed by a user who accesses from an office or a home from the communication unit 150 and analyzes the data, extracts items and contents, and selects the items and contents when transmitting from the vehicle. Register it as a word in the content database. The item extraction unit 120 includes a morphological analysis unit 121, an item-related dictionary 122, and a content-related dictionary 1
23, an expiration date setting unit 124, a key extraction unit 125, a data creation unit 126, and a database registration unit 127.

The morphological analyzer 121 analyzes data input by a user (particularly a user accessing from an office or home). The key extraction unit 125 extracts a word that can be an item from the data analyzed by the morphological analysis unit 121 by referring to the item-related dictionary 122. In addition, Ke
The y extraction unit 125 enumerates and extracts words and phrases that are the contents of the item from the words and phrases extracted as the items with reference to the content-related dictionary 123. The expiration date setting unit 124 extracts a word that can be an expiration date from the data. The data creation unit 126 creates data including the extracted items, contents, and expiration dates, and the database registration unit 127
This is registered in the content database 130.

FIG. 2 shows an example of processing in the item extraction unit 120. For example, in the case of a question sentence "How is the weather?", "Weather" is extracted as an item, and "sunny, cloudy, rain, thunder, snow, etc." is set as its value. When the content of this question sentence is transmitted to the terminal, these values (return value) can be expected as answers to the question in the transmission data (response) from the vehicle-mounted terminal.

The transmission processing unit 110 converts the description format of the content according to the terminal type, and performs transmission processing for the terminal. The transmission processing unit 110 includes a request analysis unit 111 and a conversion unit 112.

The request analysis section 111 determines the type of terminal (home / office / in-vehicle) to which the content is to be transmitted and the corresponding status (complete support / incomplete support / unsupported) by using User Age.
nt, and notifies the conversion unit 112. The conversion unit 112 acquires the content to be transmitted from the content database 130, converts the content into a format according to the type and support status of the terminal, and transmits the format from the communication unit 150 to the terminal.

Here, the format of the content transmitted to the in-vehicle terminal needs to be transmitted in a format that can be used in a special environment such as an in-vehicle environment. FIG. 3 enumerates characteristic examples of the in-vehicle environment. In the present invention, the description language of the content transmitted to the in-vehicle terminal is upwardly compatible with HTML or XML, or is a subset of HTML or XML,
The description format is such that the in-vehicle terminal can control on-vehicle devices such as automatic input of sensor information, voice synthesis and recognition.

FIG. 4 shows a specific example of the content transmitted to the in-vehicle terminal. Here, an example of an HTML-based header description is shown. In this example, since the question is related to the weather, certain information can be automatically obtained from sensor information such as a wiper and a light. The request for automatic acquisition is also described in the header (for example, <INPUT Type = a
uto…>). If the type of terminal is a home / office, the header as shown in FIG. 4 is not necessary and is omitted. In addition, even if the terminal is an in-vehicle terminal that does not support automatic input, “<INPUT Type =
auto ...>"becomes unnecessary.

As will be described later, the in-vehicle terminal (vehicle terminal equipment 200) that has received the data described in this manner,
Parse the data, send it to the interface that needs it (or need it to fulfill the data request), and get the return value. In the example of FIG. 4, the voice input interface and the automatic input interface correspond to this. The in-vehicle terminal aggregates the return values and transmits (transmits) them to the center facility.

The sound processing unit 140 receives the sound / sound data transmitted from the on-board terminal or the like from the communication unit 150, analyzes and stores the sound / sound acquired by the on-board microphone or the like, and stores the contents of the content database 130 with the contents. Link, and when there is a request for content distribution from the terminal,
The transmission processing unit 11 transmits the sound data related to the content.
0, transmitted via the communication unit 150. Sound processing unit 140
Comprises a voice recognition unit 141 and a storage unit 142.

The voice recognition section 141 performs voice recognition processing on particularly voice data sent from the terminal, and registers the recognition result (text data) in the content database 130. The accumulation unit 142 accumulates audio data or audio data transmitted from the terminal and establishes a link to the content in the content database 130. When there is a content request from the terminal, the content database 13
If the requested content is searched from 0 and there is audio / sound data linked to the content,
The corresponding voice / sound data is found from the storage unit 142 and provided together with the content.

Next, the configuration and operation of the vehicle terminal equipment 200 will be described. The vehicle terminal equipment 200 is roughly divided into a communication unit 210, a browser device 220, various sensors 2
40, a speech recognition unit 250, a speech synthesis unit 260, and various user interfaces 270. Vehicle terminal equipment 200
Can be connected to the Internet 300 or the private network including the center equipment 100 via the communication unit 210 to exchange various information.

The browser device 220 is connected to the center equipment 100.
It analyzes the content sent from the user, notifies the user of the content by an optimal notification method according to the environment, and transmits information obtained from various user interfaces 260 and various sensors 240 to the center equipment 100. The browser device 220 includes a decoder 221, a user input interface (I / F) 222, a speaker I / F 223,
Display I / F 224, voice recognition I / F 225, voice synthesis I / F 226, sensor I / F 227, microphone I / F
F228, an automatic input processing unit 229, and a calculation unit 230.

User input I / F 222, speaker I / F
223, display I / F224, voice recognition I / F2
25, a voice synthesis I / F 226, a sensor I / F 227, and a microphone I / F 228 are various sensors 240, a voice recognition unit 2
50, speech synthesizer 260, various user interfaces 2
70 interface.

The decoder 221 analyzes the content sent from the center equipment 100, classifies the content for each I / F so that the arithmetic unit 230 can easily process the content, and transmits it to the arithmetic unit. FIG. 5 shows an example of the HTML-based header description shown in FIG. 4 for the automatic input of the sensor I / F and the speech recognition I / F.
2 shows an example of classification into an application and a speech synthesis I / F. Each underlined part is I
/ F is notified.

The arithmetic unit 230 assigns the classified contents sent from the decoder 221 to each I / F and performs scheduling of the I / Fs. Scheduling means, for example, in the case of the description example in FIG. 5, data for speech recognition is transmitted to the speech recognition unit 250 via the speech recognition I / F 225 to perform preprocessing, and then the speech synthesis I / F
The voice synthesizing unit 260 notifies the user of the synthesized voice “What's the weather?” Via 226, displays the content corresponding to the screen, and prompts the user interface 270 via the microphone I / F 228 for voice input. This is to control the flow of notifying the voice recognition unit 250 to start voice recognition. Also, the automatic input processing unit 229 is notified of an item for which automatic input is specified in the content. FIG. 6 shows a specific example of the processing.

Automatic input processing unit 22 of browser device 220
9 inputs the values acquired from the various sensors 240 for the automatic input processing items notified from the arithmetic unit 230.
Here, the various sensors 240 sense the driving situation, the situation of the driver, and the like, and notify the values thereof in response to a request from the sensor I / F 227 in the browser device 220.
The sensing value includes not only a real-time value but also a history such as “average speed in the past hour”.

The speech recognition unit 250 first extracts candidate words for voice recognition from the user input request processing items notified by the calculation unit 230, then performs speech recognition of the input speech, and outputs the result to the user input request item. To enter. The voice recognition unit 250 includes a recognition processing unit 251, a synonym dictionary 252, and a candidate word extraction / storage unit 253.

Here, the data input in the vehicle environment assumes voice recognition in consideration of safety. Therefore, it is necessary to narrow down the recognition candidate words in order to improve the recognition rate. For that purpose, it is necessary to use selection input instead of free text input. However, when the selection sentence is input, the degree of freedom is greatly reduced. To compensate for this, the tolerance of the utterance word is increased by using the synonym dictionary 252. Specifically, the number of candidate words is increased.

The candidate word extraction / storage unit 253 performs preprocessing for candidate word extraction from the data for speech recognition sent from the arithmetic unit 230 of the browser device 220 using the synonym dictionary 252. For example, a synonym of the word shown in VoiceList of FIG. 6 is searched from the synonym dictionary 252, and a word that matches Category is extracted and stored as a candidate word from the synonym dictionary. The recognition processing unit 251 performs a voice recognition process on the voice input from the user, using the voice recognition candidate word provided from the candidate word extraction / storage unit 253.
FIG. 7 shows a flowchart example of the candidate word extraction / storage process.

The Frauser device 220 includes an automatic input processing unit 2
29: Automatic input item processing result and voice recognition unit 250
Edits the processing result of the user input item in the communication unit 210
(That is, make a call) to the center equipment 100.

As described above, the configuration and operation of the embodiment of the present invention have been described in detail. However, the present invention is not limited to this, and various modifications and expansions are possible.

[0035]

As described above, according to the present invention,
The following effects can be obtained. (1) By appropriately defining and using a content description language and its browser, it becomes possible to transmit useful information from the environment in the vehicle while ensuring safety. (2) By converting the description format of the content according to the terminal type, compatibility with conventional HTML-based content can be maintained, and access from an office / home can be performed in exactly the same way as in the past. (3) The content description language according to the present invention is a conventional H
It incorporates the features of TML, and the content writer learns a very small amount of content in a format or the like, facilitating the spread of the content description system according to the present invention. (4) When the system of the present invention is applied to, for example, a bulletin board, the bulletin board relates to a specific category, and the content / format described therein is relatively standardized. Therefore, the key extraction according to the present invention can cover most information transmission contents. (5) With the recording function on the server side, speech recognition of free sentences can be performed on the server side where large-capacity dictionaries and large processing volumes can be used, recorded speech can be directly distributed as content, Instead, the surrounding sounds (festival sounds, sea sounds, animal sounds, etc.) themselves can be distributed as content. (6) It is possible to efficiently limit candidate words for voice recognition, and it is possible to improve the voice recognition rate even in a vehicle environment such as road noise that is a severe environment for voice recognition. (7) Parameters such as position, time, and speed can be automatically input, and information can be transmitted during driving without bothering the user. (8) Information can be collected from the center without bothering the user and shared with traffic congestion information and sightseeing information. (9) By collecting information of the terminal browser by utilizing the function of the User Agent, it is possible to distribute contents according to the method of the terminal browser corresponding to the method of the present invention and to enjoy the maximum benefit possible for the user. become.

[Brief description of the drawings]

FIG. 1 is a block diagram of a system configuration according to an embodiment of the present invention.

FIG. 2 is a diagram showing a content database registration example of the present invention.

FIG. 3 is a diagram illustrating a characteristic example of an in-vehicle environment.

FIG. 4 is a diagram showing an example of content transmitted from a center facility to a vehicle terminal facility.

FIG. 5 is a diagram showing a classification example of the content of FIG. 4 in a decoder of a browser device.

FIG. 6 is a diagram illustrating an example of a process description in an arithmetic unit of the browser device.

FIG. 7 is a diagram illustrating an example of a flowchart of candidate word extraction and storage of the speech recognition unit.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 center equipment 110 transmission processing part 120 item extraction part 130 content database 140 sound processing part 150 communication part 200 vehicle terminal equipment 210 communication part 220 browser device 230 arithmetic part 240 various sensors 250 voice recognition part 260 voice synthesis part 270 various user interfaces

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04B 7/26 H04B 7/26 H

Claims (8)

[Claims] 1. An information exchange method in which an in-vehicle terminal arbitrarily communicates with an information storage / providing center to exchange information, wherein the center side determines the type of the in-vehicle terminal and uses a description format according to the type. In addition to transmitting the content, the information transmitted from the in-vehicle terminal is processed and stored, and the in-vehicle terminal analyzes the content sent from the center and sends out sensor information automatically according to the content. ,
An information exchange method characterized by transmitting information input by a user. 2. The information exchange method according to claim 1, wherein the description format of the content transmitted from the center side to the in-vehicle terminal is upwardly compatible with HTML, such as automatic input of sensor information, voice synthesis and recognition. An information exchange method characterized by a description format capable of controlling an in-vehicle device. 3. The information exchange method according to claim 1, wherein the in-vehicle terminal analyzes the content sent from the center and obtains the content using an in-vehicle sensor such as position, time, speed, and illuminance. When an item that can be used is instructed to be automatically input, the value of the item acquired from the in-vehicle sensor is
An information exchange method characterized in that a call is transmitted without necessarily confirming the user. 4. The information exchange method according to claim 1, wherein the in-vehicle terminal analyzes the content sent from the center, uses voice synthesis and voice recognition, and performs a conversation with the user to input items. 2. The information exchange method according to claim 1, wherein a candidate word for speech recognition is dynamically constructed from the content described in the content and used for speech recognition. 5. The information exchange method according to claim 1, wherein the in-vehicle terminal transmits the voice as it is in the free text input item to the center, and the in-vehicle terminal transmits the voice transmitted from the in-vehicle terminal. An information exchange method characterized by storing voice recognition, performing voice recognition, and linking / reflecting the recognition result to the content. 6. The information exchange method according to claim 1, wherein the in-vehicle terminal transmits the sound input from the in-vehicle microphone to the server as it is in the sound input item, and the in-vehicle terminal receives the sound from the in-vehicle terminal in the center. An information exchange method that stores transmitted sound and links / reflects it with the content. 7. The information exchange method according to claim 1, wherein the center analyzes data input from the office / home terminal, automatically extracts selected input items, and extends the life of the extracted selected items. An information exchange method characterized by setting and storing. 8. An information exchange system in which an in-vehicle terminal arbitrarily communicates with an information storage / providing center to exchange information, wherein the in-vehicle terminal and the information storage / providing center realize the method according to claim 1 to 7. An information exchange system having a function.