SECURE RECORDING AND SHARING SYSTEM OF VOICE MEMO

• US 20130156194A1
• Filed: 12/19/2011
• Published: 06/20/2013
• Est. Priority Date: 12/19/2011
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: TANIOKA, Hideaki
• Granted Patent: US 9,372,975 B2
• Time in Patent Office: Days
• US Class Current: 380/277
• CPC Class Codes: G06F 21/32 using biometric data, e.g. fingerprints, iris scans or voiceprints
• CPC Class Codes: G06F 21/62 Protecting access to data via a platform, e.g. using keys or access control rules
• CPC Class Codes: H04M 1/72412 using two-way short-range wireless interfaces
• CPC Class Codes: H04M 2203/30 related to audio recordings in general
• CPC Class Codes: H04M 2250/02 including a Bluetooth interface
• CPC Class Codes: H04M 3/42221 Conversation recording systems at the subscriber's set H04M1/656
• CPC Class Codes: H04M 3/56 Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities video conference systems H04N7/15

Abstract

According to an aspect of an embodiment, a system for secure recording and sharing of audio data includes a communication interface, a registration module, a microphone, an encryption engine, and a storage device. The registration module is configured to register an attendee device associated with an attendee for a meeting. The microphone is configured to convert sound generated at the meeting to audio data representing the sound. The encryption engine is configured to encrypt the audio data. The storage device is configured to store and associate the encrypted audio data with the attendee device for subsequent access by the attendee.

Claims

1. A system for secure recording and sharing of audio data, the system comprising:

a communication interface;

a registration module configured to register an attendee device associated with an attendee for a meeting;

a microphone configured to convert sound generated at the meeting to audio data representing the sound;

an encryption engine configured to encrypt the audio data; and

a storage device configured to store and associate the encrypted audio data with the attendee device for subsequent access by the attendee.

2. The system of claim 1, wherein the communication interface, the registration module, the microphone and the encryption engine are included in a recording device present at the meeting and the storage device is included in a server.

3. The system of claim 1, wherein the registration module is further configured to:

obtain, through the communication interface, location data associated with a recording device that includes the communication interface, the registration module, the microphone and the encryption engine;

generate a meeting record comprising meeting information associated with the meeting, the meeting information including at least one of;

a date and time of the meeting, a scheduled location of the meeting, the location data of the recording device, a title of the meeting, and an identifier of the recording device;

register, through the communication interface, the meeting information with a server that includes the storage device;

receive, through the communication interface, a unique meeting identifier associated with the meeting from the server; and

save the unique meeting identifier in the meeting record.

4. The system of claim 3, wherein the registration module is configured to register the attendee device by:

receiving, through the communication interface, device information from the attendee device, the device information including at least one of;

a name associated with the attendee, an identifier of the attendee device, location data of the attendee device, and a public key of the attendee device;

determining that the attendee device is within a predetermined proximity of the recording device based on the device information;

issuing a user identifier to the attendee device and saving the user identifier with the device information; and

sending the user identifier and the unique meeting identifier to the attendee device.

5. The system of claim 1, further comprising at least one of:

a sensor configured to detect vital signs of the attendee and generate corresponding first vital sign data, the first vital sign data being used to authenticate the attendee device and the attendee as being present at the meeting in comparison with second vital sign data representing vital signs of the attendee detected by the attendee device during registration of the attendee device;

a speaker included in the communication interface, wherein the speaker is configured to emit ultrasonic data signals and the microphone is configured to receive ultrasonic data signals, the emitted and received ultrasonic data signals including information exchanged between a recording device that includes the communication interface and attendee devices present at the meeting during registration of the attendee devices;

a camera configured to capture an image of an object present at the meeting to generate first image data, the first image data being used to authenticate the attendee device as being present at the meeting by comparison with second image data of the object generated by the attendee device during registration of the attendee device; and

a near field communication (NFC) interface included in the communication interface, the NFC interface configured to exchange data between the recording device and attendee devices present at the meeting during registration of the attendee devices.

6. The system of claim 1, wherein the encryption engine is configured to encrypt the audio data:

with a public key of the attendee device such that the attendee device may subsequently access the encrypted audio data from the storage device and decrypt it using a corresponding private key of the attendee device;

or

with a common cryptographic key, separate copies of which are encrypted by a corresponding public key of each attendee device registered for the meeting, such that each attendee device may subsequently access the encrypted audio data from the storage device and decrypt it by first decrypting the common cryptographic key using a corresponding private key and then decrypting the encrypted audio data using the common cryptographic key.

7. The system of claim 1, further comprising a speaker identification module configured to generate a file of start and stop times of speakers during the meeting.

8. The system of claim 1, further comprising a proximity module configured to periodically determine during the meeting whether the attendee device is within a predetermined proximity of a recording device that includes the communication interface;

wherein the encryption engine is configured to record and encrypt the audio data in segments corresponding to intervals between the periodic determinations; and

wherein only those encrypted audio data segments for which the attendee device was determined to be within the predetermined proximity of the recording device at the beginning of the corresponding interval are associated with the attendee device.

9. A method for secure recording and sharing of recorded data, the method comprising:

registering an attendee device associated with an attendee for a meeting;

recording audio data during the meeting;

encrypting the audio data; and

associating the encrypted audio data with the attendee device for subsequent access by the attendee.

10. The method of claim 9, wherein registering an attendee device associated with an attendee for a meeting comprises authenticating the attendee device and attendee as being present at the meeting.

11. The method of claim 10, wherein authenticating the attendee device and attendee as being present at the meeting comprises:

detecting, at a recording device that records the audio data, vital signs of the attendee, the vital signs represented by first data;

receiving, at the recording device, second data representing vital signs of the attendee detected by the attendee device associated with the attendee; and

determining that the attendee device and attendee are present at the meeting by comparing the first data to the second data.

12. The method of claim 10, wherein authenticating the attendee device and attendee as being present at the meeting comprises:

detecting, at a recording device that records the audio data, vital signs of the attendee, the vital signs represented by first data;

sending the first data to a server configured to receive, from the attendee device, a device identifier and second data representing vital signs of the attendee detected by the attendee device, the server further configured to determine that the attendee device and attendee are present at the meeting by comparing the first data to the second data;

receiving confirmation from the server that the attendee device and the attendee have been authenticated, the confirmation including the device identifier; and

sending a meeting identifier and user identifier assigned to the attendee to the attendee device.

13. The method of claim 10, wherein authenticating the attendee device and attendee as being present at the meeting comprises:

broadcasting a first ultrasonic data signal including a public key of a recording device that records the audio data and a unique meeting identifier of the meeting;

receiving, from the attendee device, a second ultrasonic data signal including a public key of the attendee device and an identifier of the attendee device, both encrypted with the public key of the recording device; and

decrypting the public key of the attendee device and the identifier of the attendee device with a private key of the recording device that corresponds to the public key of the recording device.

14. The method of claim 10, wherein authenticating the attendee device and attendee as being present at the meeting comprises:

capturing, at a recording device that records the audio data, first data representing at least one of;

an image of an object present at the meeting, location data representing a location of the recording device, or ambient information associated with the location of the recording device;

sending the first data to a server configured to receive, from the attendee device, second data captured by the attendee device, the second data representing at least one of;

an image of the object present at the meeting, location data representing the location of the attendee device, or ambient information associated with the location of the attendee device;

wherein the server is further configured to determine that the attendee device and attendee are present at the meeting by comparing the first data to the second data; and

receiving confirmation from the server that the attendee device and the attendee have been authenticated.

15. The method of claim 10, wherein authenticating the attendee device and attendee as being present at the meeting comprises:

capturing, at a recording device that records the audio data, first data representing at least one of;

an image of an object present at the meeting, location data representing a location of the recording device, or ambient information associated with the location of the recording device;

receiving, from the attendee device, second data captured by the attendee device, the second data representing at least one of;

an image of an object present at the meeting, location data representing a location of the attendee device, or ambient information associated with the location of the attendee device; and

determining that the attendee device and attendee are present at the meeting by comparing the first data to the second data.

16. The method of claim 10, wherein authenticating the attendee device and attendee as being present at the meeting comprises:

obtaining, at a recording device that records the audio data, location data for the recording device;

receiving, from the attendee device through a near field communication (NFC) interface of the recording device, location data for the attendee device; and

determining that the attendee device is within a predetermined proximity of the recording device based on the location data for the recording device and the location data for the attendee device.

17. The method of claim 9, further comprising:

obtaining location data associated with a recording device used to record the audio data;

generating a meeting record comprising meeting information associated with the meeting, the meeting information including at least one of;

a date and time of the meeting, a scheduled location of the meeting, the location data of the recording device, a title of the meeting, and an identifier of the recording device;

registering the meeting information with a server;

receiving a unique meeting identifier associated with the meeting from the server; and

saving the unique meeting identifier in the meeting record.

18. The method of claim 17, wherein registering the attendee device associated with the attendee for the meeting comprises:

receiving, from the attendee device, device information including at least one of;

a name associated with the attendee, an identifier of the attendee device, location data of the attendee device, and a public key of the attendee device;

determining that the attendee device is within a predetermined proximity of the recording device based on the device information;

issuing a user identifier to the attendee device and saving the user identifier in the meeting record together with the device information; and

sending the user identifier and the unique meeting identifier to the attendee device.

19. The method of claim 18, further comprising:

periodically determining during the meeting whether the attendee device is within a predetermined proximity of the recording device;

recording and encrypting the audio data in segments corresponding to intervals between the periodic determinations;

associating only those encrypted audio data segments with the attendee device for which the attendee device was determined to be within the predetermined proximity of the recording device at the beginning of the corresponding interval; and

uploading the encrypted audio data segments to the server with a correlation table correlating user identifiers of attendee devices within the predetermined proximity at the beginning of at least one interval and associated encrypted audio data segments.

20. The method of claim 19, wherein the attendee device is configured to subsequently access the encrypted audio data at the server by:

sending the unique meeting identifier and the user identifier to the server to request a list of recorded data associated with the attendee device;

receiving a list of encrypted audio data segments corresponding to the unique meeting identifier and the user identifier;

sending a request for at least one of the encrypted audio data segments;

receiving the at least one of the encrypted audio data segments;

decrypting the at least one of the encrypted audio data segments with a private key of the attendee device to generate decrypted audio data; and

rendering the decrypted audio data.