JP2006238247A - Mobile phone having digital broadcast receiver, and sim card - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile phone and SIM card, in which a user can make a wireless call and receive a digital broadcast, using a mobile communications terminal by only carrying one SIM card with him, in the mobile phone capable of receiving digital broadcasts. <P>SOLUTION: An SIM card 20 is built in a digital broadcast phone 10, having two operating modes of a digital broadcast receiver and a mobile phone. The SIM card 20 includes a first application that operates, when used as a digital broadcast receiver, and a second application that operates, when used as a mobile phone. An SIM controller 120 of the digital broadcast phone 10 switches the first application and the second application that the SIM card 20 has, according to the operating mode set by the user using an operating button 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mobile phone that is a portable phone using wireless communication, and more particularly to a mobile phone that also has a digital broadcast receiver that receives digital broadcasts, and a SIM card built in the mobile phone.

  The spread of mobile phones in Japan is remarkable, and the number of mobile phone contracts in Japan has reached more than 70 million. To improve the convenience of mobile phones, mobile phone base stations, including underground shopping centers and stores Is installed to cover the whole of Japan.

  Using this mobile phone base station, an attempt has been made to distribute digital broadcasting (terrestrial digital broadcasting), which started broadcasting in December 2003, to mobile phones so that the digital broadcasting can be viewed on the mobile phone. (For example, Patent Document 1). In digital broadcasting, since the receiver can be reduced in size and power can be saved, it is possible to receive the digital broadcast by a PDA (Personal Digital Assistance) or a mobile phone.

  If the technology described in Patent Document 1 is used, it is possible to watch digital broadcasting on a mobile phone, but when using an IC card, also called a SIM (Subscriber Identity Module) card, as a mobile phone and digital broadcasting. There is a problem that cannot be used together when used as a receiver.

  In the third generation mobile phone (3G), a mobile phone number, a telephone directory, and the like are stored, and a SIM card, also referred to as a UIM (User Identity Module) card, is attached to a mobile phone terminal. The digital broadcast receiver stores an encryption key for decrypting digital broadcast digital contents (such as audio and video) and has a function different from that of a mobile phone (BS-Conditional Access Systems Card). ) Is installed in a digital broadcast receiver.

In addition, with the technique described in Patent Document 1, the device that can view the received digital broadcast is only a mobile phone, and the digital broadcast received by the mobile phone cannot be viewed on another device (for example, a monitor). There is also.
JP 2005-26914 A

  Therefore, the present invention has a function of receiving a digital broadcast, and in a mobile communication terminal represented by a mobile phone, a user simply possesses one SIM card and uses the mobile communication terminal to perform wireless communication. An object of the present invention is to provide a mobile communication terminal capable of making a telephone call and receiving a digital broadcast, and a SIM card attached to the mobile communication terminal. It is another object of the present invention to provide a mobile communication terminal that allows a user to browse a digital broadcast received by the mobile communication terminal using another device.

  A first invention that solves the above-described problem is a mobile communication terminal having two operation modes of a digital broadcast receiver and a mobile phone. The SIM card built in the mobile communication terminal is a digital broadcast receiver. The mobile communication terminal includes a first application that operates when used and a second application that operates when used as a mobile phone, and the mobile communication terminal sets the operation mode by a user of the mobile communication terminal The operation mode setting means and SIM card control means for switching and executing the first application and the second application of the SIM card according to the contents set by the operation mode setting means. Is a mobile communication terminal.

  According to 1st invention, the said mobile communication terminal is provided with the said operation mode setting means and the said SIM card control means, The function of the said SIM card is according to the said operation mode of the said mobile communication terminal. Can be switched.

  Preferably, in the first invention, the mobile communication terminal preferably includes at least an external output means for outputting digital broadcast data to an external device. When the mobile communication means includes the external output means, the digital broadcast received by the mobile communication terminal can be browsed by another device.

  A SIM card attached to the mobile communication terminal according to the first aspect of the present invention, wherein the first application operates when the mobile communication terminal is used as a digital broadcast receiver, and is used as a mobile phone. A SIM card provided with a second application that operates when

  Therefore, the present invention has a function of receiving a digital broadcast, and in a mobile communication terminal represented by a mobile phone, a user simply possesses one SIM card and uses the mobile communication terminal to perform wireless communication. A mobile communication terminal capable of making calls and receiving digital broadcasts and a SIM card mounted on the mobile communication terminal can be provided. Furthermore, it is possible to provide a mobile communication terminal that allows the user to view the digital broadcast received by the mobile communication terminal on other devices.

  From here, according to the present invention, a mobile communication terminal and a SIM card having two operation modes of a digital broadcast receiver and a mobile phone will be described in detail with reference to the drawings. FIG. 1 is a block diagram of a digital broadcast telephone 10 which is a mobile communication terminal according to the present invention and is a mobile phone equipped with a digital broadcast receiver. As shown in FIG. 1, when the digital broadcast telephone 10 is used as a mobile phone, the digital broadcast telephone 10 includes a telephone antenna 110a that transmits and receives radio waves to and from the base station 30, and radio waves received by the telephone antenna 110a. RF digital circuit 130 for digital modulation / demodulation, digital broadcast telephone 10 for receiving digital broadcasts, broadcast antenna 110b for receiving radio waves from radio tower 40, and digital radio wave received by broadcast antenna 110b The broadcast RF circuit 140, the controller 100 for controlling the digital broadcast telephone 10, the SIM controller 120 for controlling the SIM card 20 incorporated in the digital broadcast telephone 10, and the user of the digital broadcast telephone 10 switching the operation mode. Operation buttons 150 for performing operations such as inputting a telephone number, and -A display 160 for displaying a net screen or digital broadcast video, a microphone 180 for inputting audio data when the digital broadcast phone 10 is used as a mobile phone, a speaker 170 for outputting audio data of a call or video, and a display 160 and an external output circuit 190 that outputs data output from the speaker 170 to the outside.

  When the digital broadcast telephone 10 shown in FIG. 1 is used as a mobile phone, the telephone antenna 110a transmits and receives radio waves in the wireless communication band (for example, 800 MHz band and 1.5 GHz band) for the mobile phone with the base station 30. To do. The telephone RF circuit 130 is a circuit that digitally modulates and demodulates the radio waves transmitted and received by the telephone antenna 110 a to and from the base station 30. When transmitting radio waves to the base station 30, the audio input from the microphone 180 and encoded by the controller 100 is used. Data is digitally modulated by a predetermined method, and the digitally modulated radio wave is transmitted to the base station 30 using the telephone antenna 110a. When receiving radio waves from the base station 30, the telephone RF circuit 130 digitally demodulates the radio waves received from the base station 30 by the telephone antenna 110a, and the digitally demodulated data is decoded by the controller 100. After that, it is output from the speaker 170.

  When a digital broadcast is received by the digital broadcast telephone 10, the radio broadcast radio wave transmitted from the radio tower 40 is received. The broadcast RF circuit 140 digitally demodulates the radio wave received by the broadcast antenna 110b, and the data digitally demodulated by the broadcast RF circuit 140 is decoded by the controller 100 and then output by the display 160 and the speaker 170.

  The controller 100 provided in the digital broadcast telephone 10 is a means for controlling the entire digital broadcast telephone 10 in accordance with the operation status of the operation buttons 150. The function of the mobile phone and the function of the digital broadcast receiver are controlled by a user operation. It has a function of switching or decoding received data by a predetermined method (for example, MPEG-4 for digital broadcasting) and outputting the decoded data to the display 160, the speaker 170, and the like.

  In the present embodiment, the means for setting the digital broadcast telephone 10 to the operation mode of either the digital broadcast receiver or the mobile phone is realized by the operation button 150 and the controller 100 provided in the digital broadcast telephone 10. When the operation mode of the digital broadcast telephone 10 is set to the digital broadcast receiver by the operation button 150, information indicating the operation mode is stored in the controller 100, and a circuit for digitally demodulating radio waves is added to the broadcast RF circuit 140. The operation mode of the digital broadcast telephone 10 is set to an operation mode that functions as a digital broadcast receiver by setting or setting the decoding method of digitally demodulated data to a decoding method for digital broadcasting. . Similarly, when the operation mode of the digital broadcast telephone 10 is set to the mobile phone by the operation button 150, the controller 100 stores data indicating that the operation mode is set to the mobile telephone.

  In this embodiment, the digital broadcast phone 10 operates as a digital broadcast receiver or a mobile phone. Therefore, the digital broadcast phone 10 is used when a digital broadcast application used when receiving a digital broadcast and a mobile phone. A SIM card 20 having a mobile phone application is attached. Each application of the SIM card 20 mounted on the digital broadcast telephone 10 is switched by the SIM controller 120.

  FIG. 2 is a diagram for explaining the SIM card 20 attached to the digital broadcast telephone 10. FIG. 2 is an external view of the SIM card 20. The SIM card 20 has a shape obtained by cutting the periphery of the IC module 20a of the IC card into a shape of about 11.5 mm × 25 mm. The detailed shape of the SIM card 20 is GSM ( It is standardized by the Global System for Mobile communications) standard.

  FIG. 3 is a diagram for explaining an application stored in the SIM card 20 shown in FIG. As shown in FIG. 3, the SIM card 20 has a mobile phone application 200 that stores programs and data necessary for the digital broadcast phone 10 to operate as a mobile phone, and the digital broadcast phone 10 performs digital broadcasting. Two applications of the digital broadcast application 210 in which program data necessary for reception are stored are stored.

  The mobile phone application 200 stored in the SIM card 20 is an application having the same function as the SIM card 20 built in the tertiary mobile phone. The mobile phone application 200 includes the digital broadcast phone 10 and the SIM card. Data such as a program 201 (for example, an authentication program using PKI, PKI: Public Key Infrastructure), data 202 (for example, a mobile phone number), a phone book 203, etc. indicating the contents of a mobile phone line contract Is memorized.

  The digital broadcast application 210 stored in the SIM card 20 is an application having the same function as the B-CAS card built in the digital broadcast receiver, and a program 211 for mutual authentication between the digital broadcast telephone 10 and the SIM card 20. ID data 212 for specifying a viewer of digital broadcasting, a master key 213 for decrypting content data encrypted and transmitted from the radio tower 40 to the digital broadcasting telephone 10 are stored.

  The SIM controller 120 provided in the digital broadcast telephone 10 shown in FIG. 1 is a means for switching and executing each application stored in the SIM card 20 in accordance with the operation mode of the digital broadcast telephone 10. The SIM controller 120 refers to the data indicating the operation mode held by the controller and selects and executes an application corresponding to the operation mode from the applications stored in the SIM card 20.

  That is, when the user sets the operation mode of the digital broadcast phone 10 to the mobile phone, the content set to the mobile phone is reflected in the data indicating the operation mode of the controller 100. Then, the SIM controller 120 refers to the content of this data in accordance with an instruction from the controller 100 and executes the mobile phone application 200 stored in the SIM card 20. When the mobile phone application 200 is executed, for example, by reading the mobile phone number 202, the terminal line between the base station 30 and the digital broadcast phone 10 is secured, and the user can use the function of the mobile phone. Become.

  When the user sets the operation mode of the digital broadcast telephone 10 to reception of digital broadcast, the content set to reception of digital broadcast is reflected in the data indicating the operation mode of the controller 100. Then, the SIM controller 120 refers to the content of this data in accordance with an instruction from the controller 100 and executes the digital broadcast application 210 stored in the SIM card 20. When the digital broadcast application 210 is executed, for example, the content transmitted in an encrypted state from the radio tower 40 is decrypted using the master key 213, and the user views the digital broadcast video on the display 160 or the like. can do.

  The external output circuit 190 provided in the digital broadcast telephone 10 shown in FIG. 1 outputs video / image data displayed on the display 160 and audio data output to the speaker 170 to an external device (for example, a television). Circuit. When the user operates the operation button 150, video / image data and audio data are output from the external output circuit 190 to the external device in accordance with an instruction from the controller 100.

  FIG. 4 is an example showing an example of use of the external output circuit 190 provided in the digital broadcast telephone 10. As shown in FIG. 4, the digital broadcast telephone 50 is installed on a stand 51, and the external output circuit of the digital broadcast telephone 50 and the monitor 52 are connected via an external connection cable 53. In the configuration shown in FIG. 4, the user can view the digital broadcast received by the digital broadcast telephone 50 on the monitor 52 having a screen size larger than that of the display provided in the digital broadcast telephone 50, or at home. There is no need to install a digital broadcast receiver.

1 is a block diagram of a digital broadcast telephone according to the present invention. External view of SIM card The figure explaining the application stored in a SIM card. An example showing an example of use of an external output circuit provided in a digital broadcast telephone.

Explanation of symbols

10 Digital Broadcasting Telephone 100 Controller 110a Telephone Antenna 110b Broadcasting Antenna 120 SIM Controller 130 Telephone RF Circuit 140 Broadcasting RF Circuit 150 Operation Button 160 Display 170 Speaker 180 Microphone 190 External Output Circuit 20 SIM Card 200 Mobile Phone Application 210 Digital Broadcast application

Claims (3)

  In a mobile communication terminal having two operation modes of a digital broadcast receiver and a mobile phone, a SIM card built in the mobile communication terminal has a first application that operates when used as a digital broadcast receiver; A second application that operates when used as a mobile phone, wherein the mobile communication terminal includes: an operation mode setting means for setting a user operation mode by the user of the mobile communication terminal; and the operation mode setting means. A mobile communication terminal comprising SIM card control means for switching and executing a first application and a second application of the SIM card according to set contents.   2. The mobile communication terminal according to claim 1, wherein the mobile communication terminal includes at least external output means for outputting digital broadcast data to an external device. A SIM card attached to the mobile communication terminal according to claim 1, wherein the first application operates when the mobile communication terminal is used as a digital broadcast receiver; And a second application that operates when used as a mobile phone.

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