KR100753288B1 - Method of servicing ippv in the satellite dmb - Google Patents

Abstract

A method for supplying an IPPV(Impulse Pay Per View) service in a satellite DMB(Digital Multimedia Broadcasting) terminal device is provided to transmit callback of purchase event, thereby preventing a purchased program from being uncharged due to unexpected separation of a battery. An IPPV pin code is received by a user, and purchase offer history information is stored in a non-volatile memory. An offer result is received from a CAS(Conditional Access System) to update a CP(Customer Purse) value among items of the purchase offer history information(S25). It is checked whether an event of the current program is a purchasable and viewable event in an IPPV channel(S26). If the event of the current program is a purchasable and viewable event, the purchase offer history information is read to check whether the CP value is zero(S29). If the CP value is not zero, purchase offer history information is transmitted to a server when a satellite DMB service is finalized or when a new event is purchased(S31).

Description

IPP service method in satellite DMB terminal {Method of Servicing IPPV in the Satellite DMB}

1 is a flowchart illustrating a method of Impulse Pay Per View (IPPV) service in a general satellite digital multimedia broadcasting (DMB) terminal.

2 is a flowchart illustrating an IPPV service method in a satellite DMB terminal according to an exemplary embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

The present invention relates to an IPPV service method in a satellite DMB terminal, and more particularly, to an IPPV service method in a satellite DMB terminal for ensuring reliability of an IPPV purchase request history callback in a satellite DMB service.

In general, a satellite DMB service is a service for broadcasting broadcast program signals such as digital video, audio, and data in a microwave band using a satellite transmission facility and a terrestrial relay facility. In addition, various multimedia information such as music broadcasting, news, traffic broadcasting, weather information, geographic location information, video information, etc., can be transmitted to mobile terminals such as vehicle terminals, mobile phone terminals, and personal digital assistants. have.

In addition, an IPPV service is provided to a premium channel among the satellite DMB services. The IPPV service stands for 'Impulse Pay Per View', and when a user has an IPPV channel authority, the user checks a program and pays a fee when desired. Service that lets you watch.

In this case, one of the most important things in the corresponding IPPV service is to transmit the information (ie, the purchase request history information) to the server in order to charge the user's purchase request details. In other words, programs that can be watched on IPPV channels must be charged.

In addition, a CAS (Conditional Access System) is essential to ensure that only users who have paid a reasonable fee (that is, subscription fee) can watch the program. For example, hypocrisy DMB terminal) refers to the system to determine.

In this case, the CAS has a reception restriction function, that is, a scrambling technology that mixes data such as voice and video to protect against unauthorized reception, and an encryption technology that is transmitted as a control word key for viewing only by a specific receiver. And, based on this, it consists of user service support function to provide various types of services to users. In the prior art, the CAS uses a fixed descrambler that stores a decryption algorithm and a secret key, but recently, a smart card having a user's unique personal information in consideration of billing, convenience, and stability. It is common to pass a secret key to the user.

On the other hand, in order to basically charge the broadcast program watched by the user, the purchase information is stored in the above-described CAS built-in smart card to check and watch whether the program has been purchased, and as a result, the billing for billing afterwards. The purchase request history information is stored in a nonvolatile memory in order to transmit the purchase request history information to a server that manages and processes the data.

Here, the purchase request history information is to ensure the billing by allowing the purchase information stored in the non-volatile memory to call back at the end of the satellite DMB service or other program purchase attempts.

However, there is a possibility of unintended intention or accidental user attempting battery dismounting during the purchase process to enable viewing without charging the program. At this time, if a battery hernia occurs between the completion of the purchase processing result information from the CAS and stored in the nonvolatile memory for completion of the purchase callback, the corresponding program event is purchased on the CAS internal smart card. As a result, normal viewing is possible, but since there is no information to call back since purchase information is not stored in the nonvolatile memory, there is a possibility that billing does not occur.

In other words, even if the basic operation of non-volatile storage of the purchase history is satisfied after the purchase request response from the CAS, there is a problem that an uncharged phenomenon may be caused for an exceptional battery hernia attempt as described above.

Then, in the prior art, the IPPV service method in the satellite DMB terminal will be described with reference to the flowchart of FIG. 1.

First, when a user of a satellite DMB terminal inputs an IPPV pin code through a key input unit provided in the terminal, the controller in the terminal checks the user's IPPV pin code input through the corresponding key input unit ( In step S11), a purchase query is requested to the CAS (step S12).

Accordingly, the CAS receives a purchase inquiry request from the controller and generates a purchase result response message (Reply Message) for the corresponding purchase inquiry request to the controller (step S13).

Accordingly, the controller receives the purchase result response message from the CAS and stores data (ie, purchase request history information) for callback to the server in a nonvolatile memory (step S14).

Thereafter, the controller checks this at the end of the satellite DMB service or at the purchase of a new event (step S15).

When the satellite DMB service is terminated or a purchase of a new event occurs, the controller checks whether there is callback data stored in the nonvolatile memory and reads the corresponding callback data (step S16). The callback data is transmitted to the server side through a transceiver in the terminal (step S17).

As described above, the satellite DMB terminal according to the related art provides an IPPV service to a premium channel among the satellite DMB services, and the IPPV service provides a charge when purchasing and watching a desired program at an instant, as indicated by the content of a word. In order to make a purchase, the server must call back information about the purchase history. That is, in any case in the IPPV service, the transmission of the purchase request history must be guaranteed.

However, an unintended attempt by the user to avoid the charge may be possible. Among them, if the battery hernia is deliberately performed during the purchase history callback process, the charge for the purchased program may not be processed normally.

In the prior art as described above, the purchase application history is stored in the CAS smart card for purchase program identification and viewing, and then stored in a non-volatile memory to call back the purchase application history. You can not guarantee the exact billing of the purchase history alone. In other words, if the battery is hermeticed before the storage is completed in the nonvolatile memory, the program can be purchased and the program can be viewed, but user billing for the purchased program is impossible.

In order to solve the above problems, the present invention provides an IPPV service method in a satellite DMB terminal to ensure the reliability of the call request history callback IPPV in the satellite DMB service.

In addition, the present invention is to ensure that the purchase event callback transmission during the IPPV service of the satellite DMB in the satellite DMB terminal, to prevent the charging of the purchase program due to unexpected battery hernia, an object thereof.

In addition, the present invention ensures that the event purchased in the process for transmitting the IPPV purchase request history during the IPPV service of the satellite DMB to be charged for the event, thereby providing a reliable service to the user of the IPPV program without a large load on the basic operation To provide a, the purpose is.

According to an embodiment of the present invention, an IPPV service method in a satellite DMB terminal includes receiving an IPPV pin code from a user in a satellite DMB terminal providing an IPPV service, and purchasing a purchase request in a nonvolatile memory. Storing information; Requesting a purchase inquiry with a Conditional Access System (CAS) and receiving a purchase result to update a Customer Purse (CP) value among items of the purchase request history information; Checking whether an event of the current program is purchased when the IPPV channel enters and can be viewed; When the event of the current program is an event that can be viewed, checking whether the CP value is '0' by reading the purchase request history information; If the CP value is not '0', it is characterized in that it comprises a step of transmitting the purchase request history information to the server to confirm the end of the satellite DMB service or when purchasing a new event.

The storing of the purchase request history information may include storing the CP value as '0' when storing the purchase request history information.

Alternatively, the IPPV service method in the satellite DMB terminal according to an embodiment of the present invention, when the event of the current program is not an event that can be watched, after confirming whether a legitimate user has made a purchase application for the current program, the CP The method may further include performing a process of checking whether the value is '0'.

Alternatively, the IPPV service method in the satellite DMB terminal according to the embodiment of the present invention, when the CP value is '0', after extracting the event ID from the purchase request history information, the extracted event ID and the current Comparing whether the event IDs of the programs are the same; When the extracted event ID and the event ID of the current program are the same, the CP value is updated to a normal value, and then when the satellite DMB service is terminated or when a new event is purchased, the purchase request history information is transmitted to the server. Characterized in that further comprises the process.

In addition, the IPPV service method in the satellite DMB terminal according to an embodiment of the present invention, when the extracted event ID and the event ID of the current program are not the same, deletes the purchase request history information from the nonvolatile memory. It further comprises the step of continuing to perform the purchase request service from the user.

In order to satisfy a callback process for charging a program purchased in an IPPV channel, a general satellite DMB terminal should store purchase program information in a nonvolatile memory for callback of a purchased event when a user's purchase request is input. In addition, in order to satisfy this, basically, the purchase history information is stored in the nonvolatile memory after a purchase request and response from the CAS. If such a basic operation is implemented, a user's unreasonable attempt to avoid charging or possible battery loss The charging of the program information purchased for the case is not made normally occurs. Thus, by applying the present invention in the process for transmitting the corresponding IPPV purchase request history, it is guaranteed to be charged for the purchased event without a large load on the basic operation to provide a reliable service to the IPPV program users.

In other words, the present invention relates to a satellite DMB terminal capable of supporting an IPPV service, and stores in an inactive memory for each item of a scheme specific to a basic purchase operation and a purchase request history callback sequence in an IPPV service of a satellite DMB terminal, and performs update and information determination. By attempting to do so, you avoid the charges that your purchase program may have caused by unexpected battery hernias. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

An IPPV service method in a satellite DMB terminal according to an embodiment of the present invention will be described with reference to the flowchart of FIG. 2.

First, when a user of a satellite DMB terminal inputs an IPPV pin code through a key input unit provided in the terminal, the controller in the terminal checks the user's IPPV pin code input through the corresponding key input unit ( In step S21), data for callback to the server side (i.e., purchase request history information) is stored in the nonvolatile memory (step S22).

In this case, the control unit stores the item of the special scheme (ie, customer purse (CP) value) as '0' among items of callback data (ie, purchase request history information) stored in the nonvolatile memory, that is, A normal CP value is stored in the nonvolatile memory as '0'.

After that, the control unit applies for a purchase query to the CAS (step S23).

Accordingly, the CAS receives a purchase inquiry request from the controller and generates a purchase result response message (Reply Message) for the corresponding purchase inquiry request to the controller (step S24).

Accordingly, the controller receives the purchase result response message from the CAS, updates the normal CP value, and stores the normal CP value in the nonvolatile memory (step S25).

In this case, as described above, the normal CP value is updated and stored in the nonvolatile memory in step 25 (S25), so that when the user performs an unsuccessful attempt or battery removal in order to avoid charging, Even if the result is not stored in the non-volatile memory but stored in the CAS, the program can be verified when viewing the program.

In other words, after updating the normal CP value among the items of the purchase request history information stored in the nonvolatile memory, the controller checks whether an event of the current program is purchased and viewed upon entering the IPPV channel. For example, it is checked whether the value of the CAS error code is 25 (step S26).

If it is not the event that can be viewed in the 26th step (S26), the control unit checks whether a legitimate user has made a purchase application for the current program (step S27). In this case, the operation of the twenty-seventh step S27 may be performed through the key input unit and the display unit or the voice output unit of the terminal.

On the other hand, in the case of an event that can be viewed in the 26th step (S26), or when a legitimate user makes a purchase request in the 27th step (S27), the control unit purchases stored in the nonvolatile memory After checking whether there is application history information (that is, callback data) and reading the corresponding purchase application history information (step S28), it is checked whether the CP item in the read purchase application history information is '0' (step S29). .

Accordingly, when the CP item is not '0' in step 29 (S29), the controller reads it from the nonvolatile memory after checking it at the end of the satellite DMB service or when purchasing a new event (step S30). One callback data (i.e., purchase request history information) is transmitted to the server side through a transceiver in the terminal (step S31).

However, when the CP item is '0' in step 29 (S29), the controller extracts an event ID from the purchase request history information read from the nonvolatile memory, and then extracts the corresponding event ID and the present. It is compared whether the event IDs of the programs are the same (step S32).

Then, when the event ID extracted in the 32nd step S32 and the event ID of the current program are the same, the controller updates the CP item to a normal value among the purchase request history information stored in the nonvolatile memory. (Step S33), to perform the thirtieth step (S30).

On the other hand, if the event ID extracted in the 32nd step (S32) and the event ID of the current program is not the same, after the control unit deletes the purchase request history stored in the nonvolatile memory (step S34), The purchase request service is continued from the user (step S35).

According to the IPPV service method in the satellite DMB terminal according to the embodiment of the present invention as described above, an unforeseen attempt by the user to avoid charging or a battery dislocation occurs during the purchase history callback process, and the purchase history is stored in the nonvolatile memory. Although the CAS may store the result, the above-mentioned verification is performed when the program is viewed, thereby synchronizing the CAS with the nonvolatile memory for information on whether or not the IPPV program has been purchased. . Therefore, as a result, the purchase is made due to battery hernia, and the program can be viewed but not charged, thereby enabling a more reliable IPPV service.

As described above, in the process for transmitting the IPPV purchase request history in the satellite DMB terminal according to the present invention, by ensuring the reliability of the IPPV purchase request history callback so as to be charged for the event purchased during the IPPV service of the satellite DMB, It can prevent the charging of the purchasing program due to bad battery hermetic and provide reliable service to IPPV program users without heavy load on basic operation.

Claims (5)

Storing a purchase request history information in a nonvolatile memory by receiving an IPPV pin code from a user in a satellite digital multimedia broadcasting (DMB) terminal that provides an impulse pay per view (IPPV) service; Requesting a purchase inquiry with a Conditional Access System (CAS) and receiving a purchase result to update a Customer Purse (CP) value among items of the purchase request history information; Checking whether an event of the current program is purchased when the IPPV channel enters and can be viewed; When the event of the current program is an event that can be viewed, checking whether the CP value is '0' by reading the purchase request history information; If the CP value is not '0', the IPPV in the satellite DMB terminal comprising the step of transmitting the purchase request history information to the server by checking the end of the satellite DMB service or when purchasing a new event Service method. The method of claim 1, The storing of the purchase request history information, IPPV service method in the satellite DMB terminal, characterized in that for storing the purchase request history information, the CP value as '0'. The method of claim 1, If the event of the current program is not an event that can be viewed, further comprising the step of performing a process of checking whether the CP value is '0' after confirming whether or not a legitimate user has made a purchase application for the current program. IPPV service method in a satellite DMB terminal, characterized in that. The method of claim 1, When the CP value is '0', extracting an event ID from the purchase request history information and comparing the extracted event ID with an event ID of a current program; When the extracted event ID and the event ID of the current program are the same, the CP value is updated to a normal value, and then when the satellite DMB service is terminated or when a new event is purchased, the purchase request history information is transmitted to the server. IPPV service method in a satellite DMB terminal, characterized in that further comprising the process. The method of claim 4, wherein If the extracted event ID and the event ID of the current program is not the same, further comprising the step of continuing to perform a purchase request service from the user after deleting the purchase request history information from the nonvolatile memory IPPV service method in a satellite DMB terminal.

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