Protection of Private Information in a Client/Server Automatic Speech Recognition System
First Claim
1. A mobile device adapted for automatic speech recognition for protecting private information on the mobile device comprising:
- a speech input component for receiving a speech input signal from a user;
a local ASR arrangement for performing local ASR processing of the speech input signal and determining if private information is included within the speech input signal;
a control unit for obscuring private information in the speech input signal if the local ASR arrangement identifies private information and for sending the speech input signal with the obscured private information to a remote server for ASR processing.
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Accused Products
Abstract
A mobile device is adapted for protecting private information on the mobile device in a hybrid automatic speech recognition arrangement. The mobile device includes a speech input component for receiving a speech input signal from a user. Additionally, the mobile device includes a local ASR arrangement for performing local ASR processing of the speech input signal and determining if private information is included within the speech input signal. A control unit on the mobile device obscures private information in the speech input signal if the local ASR arrangement identifies information within a speech recognition result as private information. The control unit releases the speech input signal with the obscured private information for transmission to a remote server for further ASR processing.
Results from the remote server'"'"'s ASR processing are integrated and combined with results from local ASR processing to display information on the mobile device.
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Citations
21 Claims
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1. A mobile device adapted for automatic speech recognition for protecting private information on the mobile device comprising:
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a speech input component for receiving a speech input signal from a user; a local ASR arrangement for performing local ASR processing of the speech input signal and determining if private information is included within the speech input signal; a control unit for obscuring private information in the speech input signal if the local ASR arrangement identifies private information and for sending the speech input signal with the obscured private information to a remote server for ASR processing. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9)
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6. A mobile device wherein the control unit obscures the private information by identifying the private information within the speech input signal and replacing the private information with a different signal.
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10. A mobile device according to claim 10 wherein the portion of the contact list includes last names without first names.
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11. A mobile device adapted for automatic speech recognition for protecting private information on the mobile device comprising:
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a speech input for receiving a speech input signal from a user; a local ASR arrangement for performing local ASR processing of the speech input signal using identified private information sources on the mobile device; wherein if private information is identified in the result of the local ASR processing of the speech input signal, the control unit declassifies the private information; and a control unit for sending the speech input signal and declassified private information from the identified private information sources to a remote server for ASR processing. - View Dependent Claims (12, 13, 14, 15)
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16. A method for protecting private information on a mobile device during automatic speech recognition, the method comprising:
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performing automatic speech recognition on an unknown speech signal on the mobile device producing a local speech recognition result; identifying private information within the local speech recognition result based on a comparison with data within a local data store on the mobile device; obscuring private information within the speech signal; transmitting the speech signal with the obscured private information to server; receiving a remote speech recognition result from the server; and outputting a combined speech recognition result based upon the local speech recognition result and the remote speech recognition result, wherein the private information is provided in the combined speech recognition result. - View Dependent Claims (17)
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18. A method according to claim 18, further comprising:
obscuring private information within the speech log prior to transmitting the speech log to the server. - View Dependent Claims (19)
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20. A method for protecting private information on a mobile device during automatic speech recognition, the method comprising:
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performing automatic speech recognition on an unknown speech signal on the mobile device producing a local speech recognition result; identifying private contact information within the local speech recognition result based on a comparison with a contact list database within a local data store on the mobile device; obscuring a first portion of the private contact information within the speech signal; transmitting the speech signal with a second portion of the private contact information to a server, wherein the first portion of the private contact information is obscured; receiving a remote speech recognition result from the server; and outputting a combined speech recognition result based upon the local speech recognition result and the remote speech recognition result, wherein the private contact information is provided in the combined speech recognition result. - View Dependent Claims (21)
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Specification