JP2008053942A - Portable terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal device where a specific person excepting for a general user can read history information of all the originating and incoming of calls of a speech or mail transmission and reception using the portable terminal device even when the general user deletes the history information of the originating and incoming of calls of the speech or mail transmission and reception stored in the portable terminal device. <P>SOLUTION: The device is provided with: a transmission and reception part which communicates with an external device; a storage part which stores history information communicated via the transmission and reception part; an input part which inputs an instruction from outside; and a control part which reads the history information stored in the storage part according to a display instruction input from the input part to display it on the display part. The control part makes reading of a part of the history information stored in the storage part impossible according to a deletion instruction input from the input part, and reads the history information whose reading is made impossible with the input of a specific instruction from the input part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a portable terminal device capable of making and receiving voice calls and mails, and more particularly to a portable terminal device capable of storing history information of voice calls and incoming and outgoing mails.

  As a prior art, there is a telephone device that has a function for storing an incoming call history, and for incoming calls from a specific destination, only a preset user can delete the incoming call record (see, for example, Patent Document 1). ).

JP 2002-027088 A (page 2-4, FIG. 6)

  In the prior art, if the user of the telephone device can easily delete the incoming call history, it is necessary to spend a lot of time trying to analyze the history information of all voice calls or mail transmission / reception using the telephone device. There was a problem.

  The present invention has been made to solve the above-described problems, and even if a general user deletes the history information of voice call incoming / outgoing or mail transmission / reception stored in the mobile terminal device, other than the general user The specific person intends to obtain a mobile terminal device that can read all the history information of voice calls and mail transmission / reception using the mobile terminal device.

  A portable terminal device according to the present invention includes a transmission / reception unit that communicates with an external device, a storage unit that stores history information communicated via the transmission / reception unit, and a display unit that displays the history information stored in the storage unit. An input unit that inputs an instruction from the outside, and a control unit that reads out history information stored in the storage unit according to a display instruction input from the input unit and displays the history information on the display unit. A part of the history information stored in the storage unit is made unreadable according to the deletion instruction inputted from the input unit, and the history information made unreadable by the input of the specific instruction from the input unit is read It is.

  The portable terminal device according to the present invention makes it impossible to read a part of the history information stored in the storage unit in response to the deletion instruction input from the input unit, and disables the reading by inputting the specific instruction from the input unit. The history information is read out, so that even if a general user deletes the history information, a specific person other than the general user can read all the voice call incoming / outgoing history information or mail transmission / reception history information using the mobile terminal device. There is an effect that can be done.

Embodiment 1 FIG.
FIG. 1 is a block configuration diagram of a mobile phone as a mobile terminal device according to the first embodiment. In the figure, a transmission / reception unit 1 that communicates with an external device detects an incoming call from a wireless communication network via a transmission / reception antenna 2 and outputs the received incoming signal to the control unit 3. The control unit 3 controls the entire mobile phone and operates according to a program stored in a memory (not shown).

  Next, the operation when the mobile phone according to Embodiment 1 receives an incoming voice call or mail will be described with reference to the flowcharts of FIGS.

First, when receiving an incoming signal via the transmission / reception unit 1, the control unit 3 reproduces the ring tone data stored in the memory, outputs it from a speaker (not shown), and the incoming signal is a voice incoming call. Or whether it is a mail reception (ST2-1).
If it is determined that the incoming call is a voice incoming call, the incoming call history information such as the incoming call number, the incoming call date and time, and the call time is stored in the outgoing / incoming history storage unit 5 as a readable area of the storage unit accessible to general users (ST2). -2) and move to ST2-4.
If it is determined that the mail is received, the control unit 3 receives the mail such as the incoming mail address, the mail text, and the mail reception date and time to the mail transmission / reception history storage unit 6 as a readable area of the storage unit accessible by the general user The history information is stored (ST2-3), and the process proceeds to ST2-4.
In ST2-4, the control unit 3 instructs the advanced encryption processing unit 7 to encrypt the history information stored in the outgoing / incoming history storage unit 5 or the mail transmission / reception history storage unit 6 (ST2-4). The stored history information is stored in the history information storage unit 8 as an unreadable area of the storage unit that cannot be accessed by general users (ST2-5).
When a general user operates the key input unit 4 as an input unit and responds to an incoming call, a call can be made by connecting a line to the terminal of the other party.

  In ST2-5, when the control unit 3 determines that the storage capacity of the history information storage unit 8 exceeds the specified value when storing the encrypted history information in the history information storage unit 8, The history information stored in the history information storage unit 8 is deleted in order from the oldest history information, and the latest history information is stored.

  Next, in the mobile phone according to Embodiment 1, the operation when voice transmission or mail is transmitted will be described with reference to the flowcharts of FIG. 1 and FIG.

First, when the user instructs voice transmission or mail transmission from the key input unit 4, the control unit 3 determines whether it is voice transmission or mail transmission (ST3-1).
If it is determined that the call is a voice call, the voice call history information such as the call number, call date / time and call time is stored in the call / call history storage unit 5 (ST3-2), and the transmission / reception unit 1 and the transmission / reception antenna 2 are connected. The transmission signal is transmitted via the mobile terminal, and the process proceeds to ST3-4.
If it is determined that the transmission is mail transmission, the control unit 3 stores the mail transmission history information such as the transmission mail address, the mail text, and the mail transmission date and time in the mail transmission / reception history storage unit 6 (ST3-3), 1 and the transmission / reception antenna 2 are used to transmit a mail transmission signal, and the process proceeds to ST3-4.
In ST3-4, the control unit 3 instructs the advanced encryption processing unit 7 to encrypt the history information stored in the outgoing / incoming history storage unit 5 or the mail transmission / reception history storage unit 6 (ST3-4). The history information is stored in the history information storage unit 8 (ST3-5), and the process is terminated.

  In ST3-5, when storing the encrypted history information in the history information storage unit 8, the control unit 3 determines that the storage capacity of the history information storage unit 8 exceeds the specified value. The history information stored in the history information storage unit 8 is deleted in order from the oldest history information, and the latest history information is stored.

  When a general user instructs display of history information from the key input unit 4, the control unit 3 reads out the history information stored in the outgoing / incoming history storage unit 5 or the mail transmission / reception history storage unit 6 and displays it on a display unit (not shown). indicate.

  Next, an operation when deleting the history information of voice call / mail reception or mail transmission / reception stored in the mobile phone according to the first embodiment by a user operation will be described with reference to the flowcharts of FIG. 1 and FIG.

When the user operates the key input unit 4 to instruct an operation to delete the voice call incoming / outgoing history information stored in the mobile phone or the mail transmission / reception history information, the control unit 3 is instructed to delete the voice call incoming / outgoing history information. It is determined whether or not (ST4-1).
When the control unit 3 determines that the instruction to delete is a voice outgoing / incoming call, the control unit 3 deletes the history information stored in the outgoing / incoming call history storage unit 5 (ST4-2), and the deletion is instructed. If it is determined that the call is a voice call, the history information stored in the mail transmission / reception history storage unit 6 is deleted (ST4-3). At this time, the history information stored in the history storage unit 8 is not deleted.

  Next, an operation when reading out history information of voice calls / mails or mail transmission / reception stored in the mobile phone according to Embodiment 1 by a specific person other than a general user will be described with reference to the flowcharts of FIGS.

When a specific person connects a PC to the external device input / output unit 9 as an input unit of the mobile phone and inputs a command for reading history information from the PC to the mobile phone, the control unit 3 is stored in the history storage unit 8. History information is read out and transferred to the PC (ST5-1).
The specific person operates the PC to decode the history information read from the mobile phone (ST5-2) and displays it on the display of the PC.

As described above, since the history information stored in the history storage unit 8 cannot be deleted by the general user, the history information that is deleted by the general user and cannot be displayed is known. If you are a specific person, you can read.
In addition, since the encrypted history information is transferred from the mobile phone to the PC, even if a command for reading the history information leaks, the history information cannot be easily displayed. It is also possible to ensure the security of other users.

  In the first embodiment, the history storage unit 8 is provided as an area different from the outgoing / incoming history storage unit 5 and the mail transmission / reception history storage unit 6, but the history information deleted by the general user in each piece of history information is deleted. The history information with the deletion mark may be controlled so that the general user cannot read it at all.

1 is a block configuration diagram of a mobile phone according to Embodiment 1. FIG. 4 is a flowchart for explaining an operation when receiving a voice call or mail in the mobile phone according to the first embodiment. 4 is a flowchart for explaining an operation when voice transmission or mail is transmitted in the mobile phone according to the first embodiment. 6 is a flowchart for explaining an operation when deleting history information of voice call arrival / reception or mail transmission / reception stored in the mobile phone according to the first embodiment by a user operation; 6 is a flowchart for explaining an operation when reading out history information of voice call arrival / reception or mail transmission / reception stored in the mobile phone according to Embodiment 1 by a specific person other than a general user.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Transmission / reception part 2 Transmission / reception antenna 3 Control part 4 Key input part 5 Transmission history storage part 6 Mail transmission / reception history storage part 7 High encryption processing part 8 History storage part 9 External apparatus input / output part

Claims (4)

A transceiver that communicates with an external device;
A storage unit for storing history information communicated via the transmission / reception unit;
A display unit for displaying the history information stored in the storage unit;
An input unit for inputting instructions from the outside;
A control unit that reads out history information stored in the storage unit according to a display instruction input from the input unit and displays the history information on the display unit;
The control unit makes it impossible to read a part of the history information stored in the storage unit in response to the deletion instruction input from the input unit, and the history information becomes unreadable by the input of the specific instruction from the input unit A portable terminal device characterized by reading out. The transmission / reception unit has a function of voice transmission, voice reception, mail transmission or mail reception,
2. The mobile terminal device according to claim 1, wherein the history information is information of a voice transmission history, a voice incoming history, a mail transmission history, or a mail reception history. The storage unit has a readable area and an unreadable area,
The control unit stores history information in the readable area and the unreadable area, respectively, and deletes the history information stored in the readable area of the storage unit in response to a deletion instruction input from the input unit. The mobile terminal device according to claim 1. 4. The portable terminal device according to claim 3, wherein when the history information is stored in the unreadable area of the storage unit, the control unit stores the history information using an encryption technique.

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