Vehicle mounted unit, voiced conversation document production server, and navigation system utilizing the same

• US 20050144011A1
• Filed: 11/03/2004
• Published: 06/30/2005
• Est. Priority Date: 12/26/2003
• Status: Abandoned Application

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Kawana, Yuta
• Application Number:
  US10/979,118
• Publication Number:
  US 20050144011A1
• Time in Patent Office: Days
• US Class Current: 704/277
• CPC Class Codes: G01C 21/3608 using speech input, e.g. using speech recognition
• CPC Class Codes: G01C 21/3629 Guidance using speech or audio output, e.g. text-to-speech text to speech systems per se G10L13/00
• CPC Class Codes: G10L 13/00 Speech synthesis; Text to speech systems
• CPC Class Codes: G10L 15/22 Procedures used during a speech recognition process, e.g. man-machine dialogue

Abstract

Navigation system includes vehicle mounted unit, voiced conversation document production server and information retrieval server, and the vehicle mounted unit produces and transmits to the server a request including recognized word and present position information acquired from a position detection part when evaluation by a driving performance evaluation part satisfies a predetermined reference, and the voiced conversation document production server searches information retrieval server using information retrieval word based on the recognized word included in the request, and buries acquired information in a voiced conversation document by voiced conversation document production part and transmits the voiced conversation document to the vehicle mounted unit, then the vehicle mounted unit analyzes voiced conversation document transmitted from the server and performs voiced conversation by voiced conversation parts and outputs result by voice synthesis part and synthesized voice output part.

Claims

1. A vehicle mounted unit comprising:

a voice recognition part that recognizes input voice to output the input voice as a recognized word;

a position detection part that detects a present position of a vehicle and outputs the present position as present position information;

a driving performance evaluation part that evaluates driving performance;

a control part that produces a voiced conversation document production request which includes the recognized word acquired from the voice recognition part and the present position information acquired from the position detection part when the recognized word is acquired from the voice recognition part and when evaluation by the driving performance evaluation part satisfies a predetermined reference;

a transmission part that transmits the voiced conversation document production request which is produced by the control part to the outside;

a reception part that receives a voiced conversation document which is transmitted from the outside in response to transmission from the transmission part;

a voiced conversation document analysis part that analyzes the voiced conversation document which is received by the reception part;

a voiced conversation part that performs voiced conversation according to an analysis result by the voiced conversation document analysis part; and

a synthesized voice output part that outputs a result which is derived from the voiced conversation by the voiced conversation part.

2. The vehicle mounted unit as claimed in claim 1, further comprising a path search part that searches a path to a destination, wherein the voiced conversation document analysis part instructs the path search part to search a path when the voiced conversation document received from the outside includes information showing a destination and wherein the synthesized voice output part outputs guidance of the path searched by the path search part.

3. The vehicle mounted unit as claimed in claim 1, wherein the driving performance evaluation part stores an evaluation point produced on a basis of information including a continuous running time, the number of times of braking, and the number of curves of the vehicle and wherein the control part compares the evaluation point with a predetermined reference value to determine whether or not the evaluation point satisfies the predetermined reference value.

4. A voiced conversation document production server comprising:

a reception part that receives a voiced conversation document production request which is transmitted from a moving body and includes a recognized word and present position information of the moving body;

an information retrieval part that searches an external information retrieval server by use of an information retrieval word which is produced on a basis of the recognized word included in the voiced conversation document production request received by the reception part;

a voiced conversation document production part that produces a voiced conversation document including information retrieved from the external information retrieval server by the information retrieval part in response to the voiced conversation document production request received by the reception part; and

a transmission part that transmits the voiced conversation document produced by the voiced conversation document production part.

5. The voiced conversation document production server as claimed in claim 4, further comprising a voiced conversation document model storage part that stores a voiced conversation document model, wherein the voiced conversation document production part reads a voiced conversation document model which is related to the recognized word included in the voiced conversation document production request from the voiced conversation document model storage part in response to the voiced conversation document production request received by the reception part and buries information which is retrieved from the external information retrieval server by the information retrieval part in the voiced conversation document model to produce the voiced conversation document.

6. The voiced conversation document production server as claimed in claim 4, further comprising;

a retrieval word data base that stores an information retrieval word for searching the external information retrieval server; and

an information retrieval word acquisition part that acquires the information retrieval word which is related to the recognized word included in the voiced conversation document production request received by the reception part from the retrieval word database, wherein the information retrieval part searches the external retrieval server by use of the information retrieval word acquired by the information retrieval word acquisition part.

7. A navigation system comprising:

a vehicle mounted unit,

a voiced conversation document production server; and

an information retrieval server,

wherein the vehicle mounted unit includes;

a voice recognition part that recognizes input voice to output the input voice as a recognized word;

a position detection part that detects a present position of a vehicle and outputs the present position as present position information;

a driving performance evaluation part that evaluates driving performance;

a control part that produces a voiced conversation document production request which includes the recognized word acquired from the voice recognition part and the present position information acquired from the position detection part when the recognized word is acquired from the voice recognition part and when evaluation by the driving performance evaluation part satisfies a predetermined reference;

a first transmission part that transmits the voiced conversation document production request which is produced by the control part to the outside;

a first reception part that receives a voiced conversation document which is transmitted from the voiced conversation document production server in response to transmission from the first transmission part;

a voiced conversation document analysis part that analyzes the voiced conversation document which is received by the first reception part;

a voiced conversation part that performs voiced conversation according to an analysis result by the voiced conversation document analysis part; and

a synthesized voice output part that outputs a result which is derived from the voiced conversation by the voiced conversation part,

wherein the voiced conversation document production server includes;

a second reception part that receives the voiced conversation document production request which is transmitted from the vehicle mounted unit;

an information retrieval part that searches the information retrieval server by use of an information retrieval word which is produced on a basis of the recognized word included in the voiced conversation document production request received by the second reception part;

a voiced conversation document production part that produces a voiced conversation document including information retrieved from the information retrieval server by the information retrieval part in response to the voiced conversation document production request received by the second reception part; and

a second transmission part that transmits the voiced conversation document produced by the voiced conversation document production part to the vehicle mounted unit.