JP2008078763A - Mobile phone - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile phone which is capable of performing precise authentication by simple operation without spoiling portability. <P>SOLUTION: A mobile phone 1 includes: an acceleration sensor 5 which is mounted in a main body of the mobile phone 1 and detects acceleration applied to the main body of the mobile phone 1; a storage part 7 wherein authentication data for a reference including at least reference character string data and script data are stored; an authentication part 6 which generates character-recognized character string data on the basis of acceleration data detected by the acceleration sensor part 5 and generates script-analyzed script data and collates authentication data including the generated character string data and script data with the authentication data for a reference stored in the storage part 7; and a control part 2 which unlocks security in accordance with a collation result of the authentication part 6. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mobile phone, and more particularly, to a mobile phone including an acceleration sensor.

  Mobile phones are equipped with various security functions to protect personal information such as phone books, images, and emails. The most common is password authentication, but since it is a simple combination of numbers, there is a risk of password leakage. In addition, there are authentication functions such as fingerprint authentication and face authentication. However, special functions and equipment are required, which may increase the size of the mobile phone and complicate the operation.

  In view of this, there has been proposed a motion recognition device capable of performing personal authentication using a detection signal of a portable three-dimensional acceleration sensor (see Patent Document 1). In this motion recognition apparatus, a portable three-dimensional acceleration sensor that senses three-dimensional acceleration, a feature amount extracting unit that extracts a temporal transition of three-dimensional acceleration detected by the portable three-dimensional acceleration sensor, and a three-dimensional The feature database that holds the reference feature quantity of acceleration, the matching processing means that performs matching between the feature quantity extracted by the feature quantity extraction means and the reference feature quantity held in the feature quantity database, and the matching processing means match Authentication success signal output means for outputting an authentication success signal if successful. In Patent Document 1, it is assumed that such a motion recognition device can be employed in a mobile phone.

JP 2005-92722 A

  However, since the portable three-dimensional acceleration sensor in this motion recognition device is light and easily movable by the user, it does not feel unity with the mobile phone body and lacks portability. Further, in this motion recognition device, since authentication is performed only by matching the feature amount extracted by the feature amount extraction unit with the reference feature amount held in the feature amount database, there is a risk of lack of safety.

  A main problem of the present invention is to provide a mobile phone that enables highly accurate authentication with a simple operation without impairing portability.

  In an aspect of the present invention, in a mobile phone, an acceleration sensor unit that is mounted inside the main body of the mobile phone and detects acceleration applied to the main body of the mobile phone, and reference authentication data including at least character string data serving as a reference A character string data recognized based on acceleration data detected by the acceleration sensor unit, authentication data including at least the generated character string data, and the memory unit An authentication unit that compares the reference authentication data and a control unit that releases a security lock according to a verification result of the authentication unit.

  In the mobile phone of the present invention, the reference authentication data includes reference handwriting data, the authentication unit generates handwriting data analyzed based on the acceleration data, and the authentication data is generated. The handwriting data is preferably included.

  In the mobile phone of the present invention, the authentication unit generates character data recognized based on acceleration data detected by the acceleration sensor unit in the dictionary search mode, and the storage unit stores dictionary data. In the dictionary search mode, the control unit searches the dictionary data stored in the storage unit based on the generated character data, and displays the corresponding dictionary data on the display unit. preferable.

  According to the present invention, by using the acceleration sensor, it is not necessary to key-in a character string directly from the screen, so that it is not necessary to mount a special device such as a touch panel on the mobile phone. Further, since authentication is performed by drawing characters by shaking the mobile phone in the air, authentication can be performed with a simple operation without impairing portability. In addition to the authentication by the character string data, the double lock of the handwriting appraisal by the handwriting data is performed, so that it is possible to perform the person verification with higher accuracy.

  A mobile phone according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram schematically showing the configuration of the mobile phone according to Embodiment 1 of the present invention.

  The mobile phone 1 is a portable communication terminal capable of making a call, and includes a control unit 2, an operation unit 3, a display unit 4, an acceleration sensor unit 5, an authentication unit 6, a storage unit 7, and a communication unit 8. And an audio processing unit 9.

  The control unit 2 is a part that performs predetermined information processing based on a program stored in the storage unit 7 and controls the operations of the constituent units 3 to 9. The operation unit 3 is a part for inputting character information and performing key operations. The display unit 4 is a part that displays predetermined information. The acceleration sensor unit 5 is a part that is mounted inside the mobile phone body, detects a three-dimensional acceleration applied to the mobile phone body, and outputs the detected acceleration data to the authentication unit 6.

  The authentication unit 6 generates character string data that has been character-recognized based on the acceleration data detected by the acceleration sensor unit 5, generates handwriting data that has been handwritten based on the acceleration data, and generates the generated character string data and handwriting Authentication data including data is processed. The authentication unit 6 registers the reference authentication data in the storage unit 7 when registering the reference authentication data. When the authentication unit 6 releases the security lock, the authentication unit 6 generates character string data that is character-recognized based on the acceleration data detected by the acceleration sensor unit 5, and generates handwriting data that is subjected to handwriting analysis based on the acceleration data. The authentication data including the generated character string data and handwriting data is collated with the reference authentication data stored in the storage unit 7.

  The storage unit 7 is a part that stores predetermined data, programs, and the like. The storage unit 7 stores the reference authentication data generated by the authentication unit 6 when registering the reference authentication data. The communication unit 8 is a part that communicates with other mobile phones, servers, and the like via an information network (not shown) and transmits / receives predetermined information. The voice processing unit 9 is a part that processes voice data for a receiver (not shown) and a microphone (not shown).

  Next, the reference authentication data registration operation of the mobile phone according to the first embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a flowchart schematically showing the reference authentication data registration operation in the mobile phone according to the first embodiment of the present invention.

  First, the user requests a registration mode for reference authentication data by operating the operation unit 3 (step A1). When the registration mode for the reference authentication data is entered, the control unit 2 activates the acceleration sensor unit 5 and causes the display unit 4 to display a message requesting collection of the reference authentication data (step A2). Next, the user draws a character string (signature) in the air by shaking the mobile phone 1 (step A3). At this time, the acceleration sensor unit 5 detects the character string, passes the acceleration data output from the acceleration sensor unit 5 to the authentication unit 6, and the authentication unit 6 generates character string data and handwriting data based on the acceleration data. Then, the reference authentication data including the generated character string data and handwriting data is generated and registered in the storage unit 7 (step A4), and the process ends.

  Next, a security lock setting operation of the mobile phone according to the first embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a flowchart schematically showing a security lock setting operation in the mobile phone according to the first embodiment of the present invention.

  First, the user requests setting of a security lock by operating the operation unit 3 (step B1). Upon receiving a security lock setting request, the control unit 2 sets the security lock of the mobile phone 1 using the reference authentication data registered in the storage unit 7 as an authentication key (step B2). Thereafter, the display unit 4 displays a message indicating that the security lock is being set (step B3) and ends.

  Next, a security lock releasing operation of the mobile phone according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 4 is a flowchart schematically showing a security lock releasing operation in the mobile phone according to the first embodiment of the present invention.

  First, the user requests release of the security lock by operating the operation unit 3 (step C1). Upon receiving a request to release the security lock, the control unit 2 activates the acceleration sensor unit 5 and displays a message requesting collection of authentication data on the display unit 4 (step C2). Next, the user draws a character string (signature) in the air by shaking the mobile phone 1 (step C3). At this time, the acceleration sensor unit 5 detects the character string, passes the acceleration data output from the acceleration sensor unit 5 to the authentication unit 6, and the authentication unit 6 generates character string data and handwriting data based on the acceleration data. Then, authentication data including the generated character string data and handwriting data is generated (step C4). Next, the authentication unit 6 compares the generated authentication data with the reference authentication data stored in the storage unit 7 and confirms whether or not the verification is successful (step C5). When the collation is successful (YES in step C5), the control unit 2 releases the security lock of the mobile phone 1 (step C6) and ends. If the verification fails (NO in step C5), the control unit 2 displays a message indicating that the lock cannot be released on the display unit 4 (step C7), and the process ends.

  According to the first embodiment, since the acceleration sensor 5 is used, there is no need to input a character string directly from the screen, so that there is no need to mount a special device such as a touch panel on the mobile phone 1. Further, since the authentication is performed by drawing the character by shaking the mobile phone 1 in the air, the authentication can be performed by a simple operation without impairing the portability. In addition to the authentication by the character string data, the double lock of the handwriting appraisal by the handwriting data is performed, so that it is possible to perform the person verification with higher accuracy.

(Embodiment 2)
A mobile phone according to Embodiment 2 of the present invention will be described.

  In the mobile phone according to the second embodiment, the mobile phone (1 in FIG. 1) is used as a dictionary search keyword such as a search for kanji whose reading is unknown based on character string data detected by drawing a character by shaking the mobile phone (1 in FIG. 1). It is possible.

  As an operation, first, the user requests a dictionary search mode by operating the operation unit (3 in FIG. 1). In the dictionary search mode, the control unit (2 in FIG. 1) activates the acceleration sensor unit (5 in FIG. 1) and displays a message requesting input of characters on the display unit (4 in FIG. 1). Next, the user draws characters (kanji whose reading is unknown) in the air by shaking the mobile phone 1. At this time, characters are detected by the acceleration sensor unit (5 in FIG. 1), and the acceleration data output from the acceleration sensor unit (5 in FIG. 1) is passed to the authentication unit (6 in FIG. 1). Character data is generated based on the acceleration data. Next, the control unit (2 in FIG. 1) searches dictionary data (including kanji, reading, etc.) stored in advance in the storage unit (7 in FIG. 1) based on the generated character data. The dictionary data to be displayed is displayed on the display unit (4 in FIG. 1).

  According to the second embodiment, using the function of the mobile phone according to the first embodiment, it is possible to perform a dictionary search such as a search for kanji whose reading is unknown.

It is the block diagram which showed typically the structure of the mobile telephone which concerns on Embodiment 1 of this invention. 5 is a flowchart schematically showing a registration operation of reference authentication data in the mobile phone according to the first embodiment of the present invention. 5 is a flowchart schematically showing a security lock setting operation in the mobile phone according to the first embodiment of the present invention. 3 is a flowchart schematically showing a security lock releasing operation in the mobile phone according to the first embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cellular phone 2 Control part 3 Operation part 4 Display part 5 Acceleration sensor part 6 Authentication part 7 Memory | storage part 8 Communication part 9 Voice processing part

Claims (3)

An acceleration sensor unit that is mounted inside the main body of the mobile phone and detects acceleration applied to the main body of the mobile phone;
A storage unit for storing reference authentication data including at least character string data serving as a reference;
Generating character string data recognized by characters based on acceleration data detected by the acceleration sensor unit; and at least authentication data including the generated character string data; and the reference authentication data stored in the storage unit. An authentication unit to be verified;
A control unit for releasing the security lock according to the verification result of the authentication unit;
A mobile phone comprising: The reference authentication data includes handwriting data as a reference,
The authentication unit generates handwriting data obtained by handwriting analysis based on the acceleration data,
The mobile phone according to claim 1, wherein the authentication data includes the generated handwriting data. The authentication unit generates character data that is character-recognized based on acceleration data detected by the acceleration sensor unit in the dictionary search mode;
The storage unit stores dictionary data,
In the dictionary search mode, the control unit searches the dictionary data stored in the storage unit based on the generated character data, and displays the corresponding dictionary data on the display unit. The mobile phone according to claim 1 or 2.

Images