PROCESSING CONTEXT INFORMATION

• US 20120328092A1
• Filed: 06/20/2012
• Published: 12/27/2012
• Est. Priority Date: 06/22/2011
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Kudo, Michiharu
• Granted Patent: US 9,044,855 B2
• Time in Patent Office: Days
• US Class Current: 380/28
• CPC Class Codes: B25J 11/008 Manipulators for service tasks
• CPC Class Codes: B25J 9/0003 Home robots, i.e. small robots for domestic use
• CPC Class Codes: G06F 21/6218 to a system of files or objects, e.g. local or distributed file system or database
• CPC Class Codes: G06F 21/6254 by anonymising data, e.g. decorrelating personal data from the owner's identification
• CPC Class Codes: H04L 2209/42 Anonymization, e.g. involving pseudonyms
• CPC Class Codes: H04L 2209/60 Digital content management, e.g. content distribution
• CPC Class Codes: H04L 2209/805 Lightweight hardware, e.g. radio-frequency identification [RFID] or sensor
• CPC Class Codes: H04L 9/0891 Revocation or update of secret information, e.g. encryption key update or rekeying
• CPC Class Codes: H04L 9/0894 Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage

Abstract

A system for generating contexts of targets to estimate a high-order context. The system includes: a detection device including: a sensor for detecting a target; module for extracting the target and a primary context of the target based on data detected by the sensor; and module for encrypting the primary context with a key corresponding to the target; a storage device for recording encrypted primary context from the detection device; and a processing device including: module for receiving the encrypted primary context from the storage device; module for receiving the key corresponding to the target involved in the encrypted primary context; module for decrypting the encrypted primary context using received key; and module for estimating a high-order context using the decrypted primary context; where the processing device further includes a module for requesting the detection device to delete information on a key corresponding to a specific target.

Claims

1. A system for generating contexts of targets to estimate a high-order context from a plurality of contexts, the system comprising:

a detection device comprising;

a sensor for detecting a target;

module for extracting said target and a primary context of said target based on data detected by said sensor; and

module for encrypting said primary context with a key corresponding to said target;

a storage device for recording encrypted primary context from said detection device; and

a processing device comprising;

module for receiving said encrypted primary context from said storage device;

module for receiving said key corresponding to said target involved in said encrypted primary context;

module for decrypting said encrypted primary context using received key; and

module for estimating a high-order context using said decrypted primary context;

wherein said processing device further comprises a module for requesting said detection device to delete information on a key corresponding to a specific target.

2. The system according to claim 1, wherein:

said detection device is a robot; and

said sensor comprises an image sensor and a microphone.

3. The system according to claim 1, wherein said detection device further comprises a first correspondence table comprising entries of a real name of said target, an identification name of said target, and said key corresponding to said target.

4. The system according to claim 3, wherein said detection device further comprises a second correspondence table comprising entries of a time interval of said primary context and an identification name of a target associated with said primary context.

5. The system according to claim 4, wherein information on said time interval of said primary context is added in an unencrypted format to information on said encrypted primary context sent from said detection device to said storage device.

6. The system according to claim 5, wherein said module for receiving said encrypted primary context from said storage device makes an inquiry to said storage device during said time interval of said primary context.

7. The system according to claim 1, wherein:

encryption is of an AES encryption type; and

said key is 128 bits.

8. The system according to claim 1, further comprising a plurality of said detection devices, each of said detection devices further comprising:

module for creating a coordinated context key for a target detected by another detection device from said plurality of said detection devices under a predetermined condition; and

module for encrypting a context corresponding to said predetermined condition by using said coordinated context key.

9. The system according to claim 1, wherein said storage device is offered by a cloud computing storage service.

10-18. -18. (canceled)