Voice recognition apparatus for vehicle

• US 20030023432A1
• Filed: 07/11/2002
• Published: 01/30/2003
• Est. Priority Date: 07/13/2001
• Status: Active Grant

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Kyomitsu, Tatsuya
• Granted Patent: US 7,212,966 B2
• Time in Patent Office: Days
• US Class Current: 704/231
• CPC Class Codes: G10L 15/20 Speech recognition techniques specially adapted for robustness in adverse environments, e.g. in noise, of stress induced speech G10L21/02 takes precedence
• CPC Class Codes: G10L 2015/228 of application context

Abstract

A voice recognition apparatus for a vehicle is provided for decreasing the feeling of discomfort of the operator even in the case that voice recognition is impossible over several times continuously. The voice recognition apparatus for a vehicle that recognizes voice input via an voice input device comprises a response output device for outputting a response to said voice input, a recognition possible or impossible determining device for determining whether said voice input can be recognized, and a response change executing device for operating when recognition is impossible for outputting a response having a different expression from said response output device depending on the number of times it has been determined that recognition is impossible by said recognition possible or impossible determining device.

Claims

1. A voice recognition apparatus for a vehicle that recognizes voice input via an voice input device, comprising:

a response output device for outputting a response to said voice input;

a recognition possible/impossible determining device for determining whether said voice input can be recognized; and

a response change executing device for operating when recognition is impossible for outputting a response having a different expression from said response output device depending on the number of times it has been determined that recognition is impossible by said recognition possible/impossible determining device.

3. A vehicle voice recognition apparatus according to claim 1 comprising:

a voice recognition device for carrying out recognition of said input voice through said voice input device depending on a predetermined recognition threshold value; and

a recognition threshold value update device for performing when the recognition is determined to be impossible by said recognition possible/impossible determining device for updating said recognition threshold value to be referred to by said voice recognition device, to a lower threshold value by subtracting a predetermined value.

5. A vehicle voice recognition apparatus according to claim 1 comprising:

a recognition result output device for outputting the recognition result of said voice input; and

a recognition result cancellation device for canceling said recognition result based on the recognition result output by said recognition result output device; and

a response change executing device at the cancellation for operating when said recognition result is cancelled by said recognition result canceling device for outputting a response having a different expression from said response output device depending on the number of times said recognition result is cancelled or the factor of the cancellation of said recognition result.

7. A vehicle voice recognition apparatus according to claims 3 comprising:

a recognition result output device for outputting the recognition result of said voice input; and

a recognition result cancellation device for canceling said recognition result based on the recognition result output by said recognition result output device; and

a response change executing device at the cancellation for operating when said recognition result is cancelled by said recognition result canceling device for outputting a response having a different expression from said response output device depending on the number of times said recognition result is cancelled or the factor of the cancellation of said recognition result.

2. A vehicle voice recognition apparatus that recognizes voice input via an input device comprising:

a response output device for outputting a response to said voice input;

a recognition possible/impossible determining device for determining whether said voice input can be recognized;

a factor detecting device for detecting the factors in the determination of said recognition impossibility based on the state of the said voice input device or the state of the vehicle in the case that it is determined that recognition is impossible by said recognition possible/impossible determining device; and

a response change executing device for operating when recognition is impossible for outputting a response having a different expression from said response output device depending on said factor detected by said factor detecting device.

4. A vehicle voice recognition apparatus according to claim 2 comprising:

a voice recognition device for carrying out recognition of said input voice through said voice input device depending on a predetermined recognition threshold value; and

a recognition threshold value update device for performing when the recognition is determined to be impossible by said recognition possible/impossible determining device for updating said recognition threshold value to be referred to by said voice recognition device, to a lower threshold value by subtracting a predetermined value.

6. A vehicle voice recognition apparatus according to claim 2 comprising:

a recognition result output device for outputting the recognition result of said voice input; and

a recognition result cancellation device for canceling said recognition result based on the recognition result output by said recognition result output device; and

a response change executing device at the cancellation for operating when said recognition result is cancelled by said recognition result canceling device for outputting a response having a different expression from said response output device depending on the number of times said recognition result is cancelled or the factor of the cancellation of said recognition result.