JP2007312238A - Receiver and notification method of measure to failure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a user take proper measures to a failure regarding a security module. <P>SOLUTION: A module detection switch 322 detects whether or not the security module 50 which generates information for releasing conditional access is provided and supplies a detection signal MJ to a control part 50. A connector part 321 is electrically connected with the security module 50. A control part 40 displays a message according to a state of the failure on a screen of a display part 27 to make the user take the proper measures by detecting whether or not communication with the security module 50 via the connector part 321, setting an instruction based on this detection result and the detection signal MJ and supplying an on-screen control signal DS indicating the set instruction to a display drive part 26. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a receiving apparatus and a failure countermeasure notification method. Specifically, based on the detection result of whether or not a security module that generates information for canceling the limited reception is provided and the detection result of whether or not communication with the security module can be performed, an instruction is issued. By making settings and notifying the user of the set instructions, it is possible to allow the user to take appropriate measures.

  In current digital broadcasting, a limited reception method is used in which encryption is performed on the program transmission side, and only a receiving device having a viewing right can release the encryption to restrict viewing. In this limited reception method, a security module is used to give viewing rights to each receiving apparatus individually. As the security module, for example, a contact IC card in which a semiconductor integrated circuit is embedded is used, and key information unique to the card used for decryption is recorded on the contact IC card. By using the information of such a security module, the encryption of the program for which the viewing contract is made can be released.

  Such a security module is used in a state of being attached to a receiving device. In the invention of Patent Document 1, the presence or absence of a security module is detected by communication with the security module, and when the security module is not detected, The received program is switched to the viewing guide program.

JP 2005-303759 A

  By the way, when the received program is switched to the viewing guide program when the security module is not detected, if the unencrypted viewing guide program is not produced and transmitted from the broadcasting station, the channel can be switched to the viewing guide program. The program cannot be displayed. For this reason, it is necessary to cope with the broadcasting station. Further, since the viewing guide program is produced and broadcast in advance, it is impossible to give an instruction or the like according to a user operation when an abnormality occurs. Furthermore, since the viewing guide program is a program that does not need to be displayed if the security module can detect it, if one channel is allocated for the viewing guide program, the channel is effective when various contents are broadcasted by multi-channeling. It cannot be used for.

  Therefore, the present invention provides a receiving apparatus and a failure countermeasure notification method that can allow a user to take an appropriate response to a failure related to a security module.

  The concept of the present invention is a module detection switch for generating a detection signal indicating whether or not a security module for generating information for canceling limited reception is provided, and a contact terminal provided in the security module; A connector part for performing connection, and detecting whether or not communication with the security module can be performed via the connector part, and based on the detection result and a detection signal generated by the module detection switch, The receiving apparatus includes a control unit configured to set an instruction and a notification unit configured to notify the instruction set by the control unit.

  A module detecting step for detecting whether or not a security module for generating information for canceling the limited reception is provided; and a communication detecting step for detecting whether or not communication with the security module can be performed. A failure countermeasure notification method comprising: an instruction setting step for setting an instruction based on detection results of the module detection step and the communication detection step; and an instruction notification step for notifying the instruction set in the instruction setting step It is in.

  In the present invention, it is detected whether or not a security module that generates information for canceling conditional access, for example, a contact IC card that generates key information for canceling encryption is provided. Further, it is detected whether or not communication can be performed via a connector portion connected to a contact terminal provided in the security module. Based on the detection result, an instruction is notified so as to cause the user to take an appropriate response to the failure related to the security module. For example, if communication with the security module is not possible despite the security module being installed, a security module re-installation instruction is set, and the set instruction is notified to the user by video or audio. The If communication with the security module cannot be performed despite the re-installation operation of the security module, a contact terminal cleaning instruction is notified. Further, when the continuous mounting period of the security module exceeds a predetermined period, a contact terminal cleaning instruction is notified.

  According to this invention, based on the detection result of whether or not a security module that generates information for canceling the limited reception is provided and the detection result of whether or not communication with the security module can be performed. The instruction is set, and the set instruction is notified to the user. For this reason, when a failure relating to the security module occurs, an instruction according to the failure state is notified, so that the user can take an appropriate action.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a configuration of a receiving apparatus, for example, a television apparatus.

  A reception signal SRF obtained by receiving a broadcast wave with the antenna 11 is supplied to the tuner unit 21 of the reception device 20. The tuner unit 21 selects a desired broadcast content frequency from the received signal SRF based on a channel selection control signal from the control unit 40 described later. Further, the tuner unit 21 performs demodulation processing, error correction processing, and the like on the signal obtained by channel selection, generates a transport stream TS, and supplies the transport stream TS to the information separation unit 22.

  The information separation unit 22 analyzes the transport stream TS and separates information necessary for viewing the program. For example, the information separation unit 22 is based on a program map table (PMT) of program specific information (PSI: Program Specific Information) included in the transport stream TS. Separate signals such as voice and data. Here, the separated signals DPa such as video, audio and data are supplied to the descrambler 23. The separated video or audio signal DPa is a signal encoded on the transmission side. When the information separation unit 22 determines that the program is scrambled by the conditional access system based on the conditional access table (CAT) of the program specific information, the information separation unit 22 receives the individual information EMM from the transport stream TS. The common information ECM is separated. Here, the separated individual information EMM and common information ECM are supplied to the security module 50 via the module interface unit 32.

  The descrambler 23 performs restoration processing for restoring the signal DPa such as video, audio, and data separated by the information separation unit 22 to the state before encryption (before scramble), and the restored signal DPb to the demultiplexer 24 Supply. In this restoration process, the scramble key Ks supplied from the security module 50 is used. The descrambler 23 supplies the demultiplexer 24 without performing restoration processing when the signal DPa such as video, audio, and data is not scrambled.

  The demultiplexer 24 separates the video signal DCv from the supplied signal DPb (DPa) and supplies it to the video decoder 25. Further, the demultiplexer 24 separates the audio signal DCa from the supplied signal DPb (DPa) and supplies it to the audio decoder 28. Further, the data signal DCd is separated from the supplied signal DPb (DPa) and supplied to the control unit 40.

  The video decoder 25 performs a decoding process on the encoded video signal DCv and supplies the obtained video signal DV to the display driving unit 26. The display drive unit 26 generates a drive signal RV based on the video signal DV supplied from the video decoder 25 and drives the display unit 27 with the drive signal RV. Further, when an on-screen control signal DS is supplied from the control unit 40, which will be described later, the display driving unit 26 synthesizes a moving image based on the video signal DV and an image such as a character or a graphic based on the on-screen control signal DS. A drive signal RV is generated to display.

  The audio decoder 28 performs a decoding process on the encoded audio signal DCa and supplies the obtained audio signal DA to the audio output processing unit 29. The audio output processing unit 29 converts the audio signal DA supplied from the audio decoder 28 into an analog audio signal, amplifies it to a desired signal level, and supplies it to the speaker 30 as an audio output signal SAout.

  The communication interface unit 31 is for communicating with an external server or the like via a public communication network or a network. For example, viewing history information is transmitted through the communication interface unit 31 to the broadcaster side or the provider side that manages and operates the limited reception. Also, software used in the receiving device is downloaded. Furthermore, when distribution of a program or information related to a program (electronic program display or the like) is performed via a public communication network or a network, downloading of the information related to the program or the program is also performed.

  The module interface unit 32 performs communication between the receiving device 20 and the security module 50, and the security module 50 is electrically connected to the connector unit 321. The module interface unit 32 supplies the individual information EMM and common information ECM separated by the information separation unit 22 to the security module 50. Further, the module interface unit 32 supplies the identification information stored in the security module 50 to the control unit 40. Further, the module interface unit 32 supplies information on the scramble key Ks generated by the security module 50 to the descrambler 23. The module interface unit 32 is provided with a module detection switch 322 that detects whether or not the security module 50 is attached, and generates a detection signal MJ indicating a detection result and supplies the detection signal MJ to the control unit 40.

  FIG. 2 shows the appearance of the security module (contact IC card). The security module 50 incorporates a semiconductor integrated circuit (not shown), and information storage and various signal processing are performed in the semiconductor integrated circuit. In the security module 50, contact terminals 51 for supplying power to the semiconductor integrated circuit and communicating with the semiconductor integrated circuit are provided exposed on the module surface.

  FIG. 3 shows the internal configuration of the security module. The individual information EMM separated by the information separation unit 22 shown in FIG. 1 is supplied to the individual information decoding unit 52 via the contact terminal 51 shown in FIG. The common information ECM separated by the information separation unit 22 is supplied to the common information decoding unit 53 through the contact terminal 51.

  The individual information decryption unit 52 decrypts the individual information EMM using the master key Km stored in the master key storage unit 54, and generates a work key Kw. The common information decryption unit 53 performs a decryption process of the common information ECM using the work key Kw generated by the individual information decryption unit 52, and generates a scramble key Ks. By supplying the generated scramble key Ks to the descrambler 23 shown in FIG. 1 via the contact terminal 51, the signal before the scramble process can be restored from the scrambled signal.

  FIG. 4 shows a part of the configuration of the module interface unit. The connector portion 321 for connecting to the contact terminal 51 of the security module 50 is provided with a contact pin 321p on the surface corresponding to the terminal forming surface on which the contact terminal 51 of the security module 50 is provided. In the contact pin 321p, the end side connected to the contact terminal 51 slides so as not to damage the terminal forming surface when the security module 50 is inserted into the module interface unit 32. When it is inserted to the position, it becomes a position on the contact terminal 51 so that the electrical connection can be stably performed.

  In addition, a module detection switch 322 for detecting whether or not the security module 50 is attached is attached to the connector portion 321. The module detection switch 322 generates a detection signal MJ by moving the movable contact by the inserted security module 50. Moreover, it is good also as what detects that the security module 50 was inserted with a sensor, and uses the signal produced | generated by this sensor as the detection signal MJ.

  A user interface unit 41 that generates an operation signal PS corresponding to a user operation is connected to the control unit 40 shown in FIG. The user interface unit 41 includes a remote control signal receiving unit that receives signals transmitted from operation keys and a remote control device. As the operation keys, various operation keys for setting operation mode switching, channel switching, volume adjustment, information to be displayed, and the like are provided, and the user interface unit 41 responds to key operations with respect to the various operation keys. The generated operation signal PS is generated and supplied to the control unit 40. Alternatively, a signal transmitted from the remote control device is received, and an operation signal corresponding to a key operation on the operation key as described above provided in the remote control device is supplied to the control unit 40. In addition, a timer unit 42 is connected to the control unit 40, and the time TM is indicated from the timer unit 42.

  The control unit 40 is configured by using a microcomputer, a memory, and the like. The control unit 40 generates a control signal (not shown) based on the operation signal PS, and supplies the control signal to each unit via the bus 45, for example. The device 20 is controlled so as to perform an operation according to a user operation. In addition, the control unit 40 stores various setting information set by the user, program arrangement information supplied from the information separation unit 22, and data of data broadcast content. The control unit 40 performs operation setting of the receiving device 20 based on the stored setting information. Further, the control unit 40 generates the on-screen control signal DS based on the program arrangement information, the data broadcast content data, the operation signal PS and the detection signal MJ, thereby displaying the data broadcast content and various messages. Make it possible.

  Furthermore, the control unit 40 performs failure countermeasure notification processing so that an appropriate user response is performed for a failure related to the security module 50. In other words, the control unit 40 determines the failure status related to the security module 50 based on whether or not the detection signal MJ supplied from the module interface unit 32 and the security module 50 can communicate, so that appropriate user response is performed. An instruction is set in the notification section, and notification of the set instruction is performed from the notification section. For example, when an instruction is notified by an image, the display drive unit 26 and the display unit 27 are used as the notification unit, and a message display on-screen control signal DS is supplied from the control unit 40 to the display drive unit 26. Further, when an instruction is notified by voice, the voice output processing unit 29 and the speaker 30 are used as the notification unit, and a message voice signal is supplied from the control unit 40 to the voice output processing unit 29. In addition, the control unit 40 uses the time TM indicated by the time measuring unit 42 to notify an instruction to the user so that a failure related to the security module 50 does not occur.

  FIG. 5 is a flowchart showing the fault countermeasure notification process. Note that FIG. 5 shows a case where an instruction is notified by an image.

  In step ST1, the control unit 40 determines whether or not communication with the security module 50 is possible. When communication is possible, the control unit 40 proceeds to step ST2 and a failure that prevents communication with the security module 50 has occurred. Sometimes the process proceeds to step ST6.

  In step ST2, the control unit 40 determines whether or not the continuous mounting period of the security module 50 has exceeded a predetermined period. Here, the control unit 40 determines the continuous mounting period of the security module 50 using the time indicated by the time measuring unit 42, and proceeds to step ST3 when determining that the continuous mounting period exceeds the predetermined period. If it is determined that the predetermined period has not been exceeded, the process proceeds to step ST4.

  In step ST3, the control unit 40 notifies a cleaning instruction. That is, the control unit 40 generates, as the on-screen control signal DS, a signal for displaying a message for taking out the security module 50 and cleaning the contact terminal 51, and forms a notification unit that notifies the instruction. It supplies to the drive part 26. In this way, by supplying the on-screen control signal DS to the display driving unit 26, a message is displayed on the screen of the display unit 27.

  In step ST4, the control unit 40 deletes the history information and proceeds to step ST5. This history information is information for making it possible to determine what countermeasure notification has been made, and details will be described later.

  In step ST5, the control unit 40 determines whether or not the communication with the security module 50 is possible. When the communication is possible, the control unit 40 returns to step ST5 and becomes unable to communicate with the security module 50. If it does, the process returns to step ST1.

  When the process proceeds from step ST1 to step ST6, the control unit 40 determines whether or not the security module 50 is provided. When determining that the security module 50 is not provided based on the detection signal MJ supplied from the module interface unit 32, the control unit 40 proceeds to step ST7, and when determining that the security module 50 is provided. Proceed to step ST9.

  In step ST7, the control unit 40 notifies a module attachment instruction. That is, the control unit 40 generates a signal for displaying a message for attaching the security module 50 to the module interface unit 32 as the on-screen control signal DS, and supplies the generated signal to the display driving unit 26.

  In step ST8, the control unit 40 sets the history information to information A and returns to step ST1. The history information is information for making it possible to determine what kind of countermeasure notification has been made as described above. When a notification instructing to attach the security module 50 is given, the information A is set as history information. .

  When it is determined in step ST6 that the security module 50 is attached and the process proceeds to step ST9, the control unit 40 determines whether or not the history information is information B. If the history information is not determined to be information B, the process proceeds to step ST10. If the history information is determined to be information B, the process proceeds to step ST12. Note that the information B is information indicating that a countermeasure notification for the reattachment instruction has been performed, as will be described later.

  In step ST10, the control unit 40 notifies the module reattachment instruction. That is, the control unit 40 generates a message display signal for removing the security module 50 from the module interface unit 32 and reattaching it as the on-screen control signal DS, and supplies the generated signal to the display driving unit 26.

  In step ST11, the control unit 40 sets the history information to information B and returns to step ST1. Here, when the countermeasure notification of the reattachment instruction of the security module 50 is performed, the information B is set as history information.

  If it is determined that the history information is information B in step ST9 because the countermeasure notification for the reattachment instruction has already been performed, the control unit 40 notifies the cleaning instruction when the process proceeds to step ST12. That is, the control unit 40 generates a signal for displaying a message for taking out the security module 50 and cleaning the contact terminal 51 as the on-screen control signal DS, and supplies the generated signal to the display driving unit 26.

  In step ST13, the control unit 40 sets the history information to the information C and returns to step ST1. Here, when a notification for cleaning the contact terminal 51 is given, the information C is set as history information.

  If such a failure countermeasure notification process is performed, an instruction can be given in accordance with the occurrence state of the failure, so that the user can take an appropriate response to the failure.

  For example, when the security module 50 is not attached, a message for instructing to attach the security module 50 is displayed. For this reason, an appropriate message display can be performed when the user forgets to attach the security module 50.

  When communication with the security module 50 cannot be performed even though the security module 50 is attached, a message display instructing to reattach the module is displayed. For this reason, an appropriate message display is performed when communication with the security module 50 cannot be performed due to poor contact between the contact terminal 51 of the security module 50 and the contact pin 321p of the module interface unit 32. Therefore, when the user performs the operation indicated by the message display, that is, when the user performs insertion / removal of the card, recovery from the failure can be expected.

  Further, when communication with the security module 50 cannot be performed even though the security module 50 is inserted and removed, a message for cleaning instruction is displayed. For this reason, since the contact terminal of the security module 50 is dirty, an appropriate message display can be performed even when a connection failure with the contact pin 321p of the module interface unit 32 occurs. When the user performs the operation indicated by the message display, that is, when the user performs cleaning, recovery from the failure can be expected.

  When the continuous mounting period exceeds the predetermined period, a message for cleaning instruction is displayed. Therefore, the contact portion between the contact pin 321p of the module interface unit 32 and the contact terminal 51 of the security module 50 causes a connection failure due to aging. Even if it may occur, the user can perform an operation for preventing the occurrence of the failure before the failure occurs.

It is a figure which shows the structure of a receiver. It is a figure which shows a security module (appearance). It is a figure which shows a security module (internal structure). It is a figure which shows a part of structure of a module interface part. It is a flowchart which shows the notification process of a failure countermeasure.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Antenna, 20 ... Receiver, 21 ... Tuner part, 22 ... Information separation part, 23 ... Descrambler, 24 ... Demultiplexer, 25 ... Video decoder, 26 ... Display drive unit, 27 ... Display unit, 28 ... Audio decoder, 29 ... Audio output processing unit, 30 ... Speaker, 31 ... Communication interface unit, 32 ... Module interface , 40... Control unit, 41... User interface unit, 45... Bus, 50... Security module, 51. Common information decryption unit, 54... Master key storage unit, 321... Connector unit, 321p... Contact pin, 322.

Claims (5)

In the receiving device using information for canceling the limited reception generated by the security module,
A module detection switch for generating a detection signal indicating whether or not the security module is provided;
A connector portion for connecting with a contact terminal provided in the security module;
A control unit that detects whether or not communication with the security module can be performed via the connector unit, and sets an instruction based on the detection result and a detection signal generated by the module detection switch; ,
A receiving apparatus comprising: a notification unit configured to notify an instruction set by the control unit. When the control signal indicates that the security module is provided by the detection signal, the control unit sets a re-installation instruction for the security module when communication with the security module cannot be performed. The receiving device according to claim 1. The control unit communicates with the security module when it is determined by the detection signal that the remounting operation of the security module has been performed, and sets the cleaning instruction for the contact terminal when the communication is not possible The receiving apparatus according to claim 2, wherein: There is a timekeeping section that shows the time,
The control unit measures the continuous mounting period of the security module using the time indicated by the time measuring unit, and sets the cleaning instruction for the contact terminal when the continuous mounting period exceeds a predetermined period. The receiving apparatus according to claim 1, wherein: A module detection step for detecting whether or not a security module for generating information for canceling the limited reception is provided;
A communication detection step of detecting whether or not communication with the security module is possible;
An instruction setting step for setting an instruction based on detection results of the module detection step and the communication detection step;
A failure countermeasure notifying method comprising an instruction notifying step for notifying an instruction set in the instruction setting step.

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