Dialog processing method and apparatus for uninhabited air vehicles

• US 20030110028A1
• Filed: 12/11/2001
• Published: 06/12/2003
• Est. Priority Date: 12/11/2001
• Status: Active Grant

• Current Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: Bush, Stephen Francis
• Granted Patent: US 7,174,300 B2
• Time in Patent Office: Days
• US Class Current: 704/231
• CPC Class Codes: G10L 15/22 Procedures used during a speech recognition process, e.g. man-machine dialogue

Abstract

A dialog processing method and apparatus for uninhabited air vehicles is described. The apparatus contains a recognition unit for recognizing incoming data, an interpretation unit for interpreting the data according to a grammar and a response unit for generating an appropriate response to the incoming data. The method may utilize natural language processes and may reduce to a finite state machine. The incoming data is combined with uninhabited air vehicle state information to increase the accuracy of this interpretation. Additionally, the dialog states may be limited to customary air traffic control dialogs.

Claims

1. A dialog processing system for an uninhabited air vehicle comprising:

a control system that records a state of the UAV;

a recognition unit for recognizing text and analog speech input data;

an interpretation unit dynamically linked to the control system and linked to the recognition unit for interpreting the input data;

a response unit linked to the interpretation unit for producing text or audible analog speech output data;

whereby the interpretation unit utilizes UAV state data to interpret the input data to generate appropriate output data.

2. A dialog processing system as in claim 1 wherein:

the interpretation unit utilizes natural language processing.

3. A dialog processing system as in claim 1 wherein:

the voice interpretation unit comprises a dialog manager that controls which sub-dialog is active by transitioning from one dialog state to another.

4. A dialog processing system as in claim 1 wherein:

the input data is dynamically merged with UAV states selected from the group consisting of current states, past states and predicted states.

5. A dialog processing system as in claim 1 wherein:

the input data is dynamically merged with past, present and predicted states of the UAV.

6. A dialog processing system wherein:

the interpretation unit is limited to a predetermined air traffic control specific vocabulary.

7. A method of dialog processing for an uninhabited air vehicle comprising:

detecting commands;

interpreting the commands in context of dynamic UAV state information; and

,

producing responses in accordance with the interpretation of the detected commands.

8. A method of dialog processing as in claim 7 wherein:

natural language processing methods are used to interpret the commands.

9. A method of dialog processing as in claim 7 wherein:

UAV state information includes past, present and predicted states.

10. A method of dialog processing as in claim 7 wherein:

the interpreting step is executed as a finite state machine.

11. A method of dialog processing as in claim 7 wherein:

the commands may initiate from the UAV.

12. A method of dialog processing as in claim 7 wherein:

the commands may initiate from a source external to the UAV.

13. A method of dialog processing as in claim 7 wherein:

the interpreting step uses a grammar to construct dialogs while the UAV is in flight.

14. A method of dialog processing as in claim 13 wherein:

the interpreting step uses a learning process to add unknown commands to a list of possible commands.

15. A method of dialog processing as in claim 7 wherein:

the commands are broken down into sub-commands.

16. A method of dialog processing as in claim 7 wherein:

the interpreting step is limited to dialog states common to air traffic control dialogs.