KR101230267B1 - method for providing charged broadcasting service, broadcasting receiver and system - Google Patents

Abstract

The present invention relates to a paid broadcast service providing method, and a broadcast receiving device and system therefor. The present invention relates to receiving a paid broadcast program selection message from a broadcast transmission device, and receiving and storing a paid broadcast program corresponding to the paid broadcast program selection message. And storing the paid broadcast program stored at the subscriber's request, and storing the paid broadcast program transmitted from the broadcast transmission device at a predetermined time as a storage medium of the broadcast receiving device, and then storing the paid broadcast program at a desired viewing time. There is an advantage that can play a broadcast program.

Description

Method for providing paid broadcasting service, apparatus and system for receiving broadcast therefor {method for providing charged broadcasting service, broadcasting receiver and system}

The present invention relates to a paid broadcast service providing method, and more particularly, a paid broadcast service providing method of allowing a subscriber to watch at any desired viewing time after storing a paid broadcast program transmitted from a broadcast transmitting device in a subscriber broadcast receiving device. The present invention relates to a broadcast receiving apparatus and system for this.

With the rapid development of broadcasting technology and communication technology, the change from analog broadcasting to digital broadcasting has been promoted, and various forms of convergence of technology and encryption technology for simultaneously transmitting and transmitting video, audio, and data regardless of content and size Bi-directional broadcast service is appearing.

Among these, pay broadcasting services such as Pay Per View (PPV), Pay Per Duration (PPD), Pay Per Series (PPS), etc., allow subscribers to watch broadcasts on a pay basis. The viewing fee is a broadcasting service that is charged separately, and is a broadcast service that has been widely used recently because it can selectively use only a broadcasting program suitable for a subscriber's taste and pay only for watching.

In order to provide such a pay broadcasting service, a service provider may repeatedly broadcast the same program on one channel or broadcast one program on several channels at regular time intervals. In the case of continuously broadcasting one program on one channel, if the program is progressed to some extent from the broadcast start time when the user wants to watch a program, he / she gives up watching the previously broadcasted part or until the next program broadcast start time. The problem is that you have to wait. On the other hand, the method of broadcasting one program on multiple channels at regular time intervals has the advantage of reducing the time to wait for watching the broadcasting, compared to the method of continuously broadcasting one program on one channel. The disadvantage of resource management is that system implementation is complicated and requires excessive channel bandwidth.

Also, a general pay broadcasting service transmits a pay broadcast program in a scrambled state by a broadcast transmitting device, and when a subscriber selects a pay broadcast to be watched and requests viewing rights, the subscriber broadcast receiving device descrambles the pay broadcasting program to watch it. This becomes possible.

In other words, as soon as a subscriber requests viewing authority of the pay broadcasting program, the purchase of the pay broadcasting program is confirmed and billed, so that even if the viewing is not smooth, such as a remorse of the subscriber or a transmission error due to an external environmental disorder, It is difficult to cancel a paid broadcast program.

The present invention has been proposed to solve the above-mentioned conventional problems, and in particular, after storing a paid broadcast program transmitted from a broadcast transmission device in a subscriber broadcast receiving device, the subscriber can watch the paid broadcast program stored at a desired viewing time. It is an object of the present invention to provide a pay broadcast service providing method and a broadcast receiving device and system therefor.

Another object of the present invention is to store a paid broadcast program requested by the subscriber to the subscriber broadcast receiving device, and then purchase a purchase decision within a predetermined time period, thereby making it easy to decide to cancel the viewing according to the subscriber's remorse. It is an object of the present invention to provide a method of using a pay broadcasting service and a broadcast receiving apparatus and system for the same, in which a viewing error is not generated due to a transmission error.

According to an aspect of the present invention, there is provided a method of providing a pay broadcast service, the method comprising: receiving a selection message for receiving a pay broadcast program selection message from a broadcast transmission device, receiving and storing a pay broadcast program corresponding to the pay broadcast program selection message; The storage step and the playback step of playing the paid broadcast program stored at the subscriber request.

The selecting message receiving step receives a pay broadcasting program selection message including an identification number of a pay broadcasting program transmitted from the broadcast transmitting device, and the storing step includes a corresponding broadcast of a pay broadcasting program corresponding to the pay broadcasting program selection message. The pay broadcasting program is received from the transmission channel and stored.

In this case, the receiving of the selection message receives a pay broadcasting program selection message including identification numbers of all pay broadcasting programs transmitted from the broadcasting transmission device, and in the storing step, the pay broadcasting programs previously stored in the broadcast receiving device exist. When the identification number of the pay broadcasting program selection message is compared with the previously stored pay broadcasting program identification number, and if the previously stored pay broadcasting program identification number is different from the identification number of the pay broadcasting program selection message, If the pay broadcasting program corresponding to the identification number is deleted and another identification number other than the previously stored identification number exists among the pay broadcasting program selection message identification numbers, except for the same identification number as the identification number of the previously stored pay broadcasting program. Other Only the pay-TV program corresponding to the identification number is stored by selectively receiving from the broadcasting channel.

In this case, in the storing step, if there is no pre-stored pay broadcasting program in the broadcast receiving device, all pay broadcasting programs are received and stored from the corresponding broadcast transmission channel of all pay broadcasting programs corresponding to the pay broadcasting program selection message. do.

In this case, the pay broadcast program selection message including the identification numbers of all pay broadcast programs transmitted from the broadcast transmitting device may be omitted by a predetermined agreement between the broadcast transmitting device and the broadcast receiving device.

On the other hand, the receiving of the selection message may receive a pay broadcast program selection message including an identification number of a pay broadcast program designated by the broadcast transmission apparatus among pay broadcast programs transmitted from the broadcast transmission apparatus.

In this case, the receiving of the selection message may include a pay broadcasting program recently registered by the broadcast transmitting apparatus, a pay broadcasting program for promotion, a pay broadcasting program similar to a subscriber's past purchase tendency, and popularity among pay broadcasting programs transmitted from the broadcast transmitting apparatus. Receives a pay broadcast program selection message including the identification number of the pay broadcast program specified mainly on the high pay broadcast program.

On the other hand, the receiving of the selection message may receive a pay broadcasting program selection message including an identification number of the pay broadcasting program selected at the request of the subscriber among the pay broadcasting programs transmitted from the broadcast transmission device.

In this case, the receiving of the selection message may request a broadcast transmission device selection message including an identification number of the selected pay broadcasting program by requesting the broadcast transmission device through a return path among pay broadcast programs transmitted from the broadcast transmission device.

In addition, the paid broadcasting service providing method according to the present invention does not receive confirmation information that a viewing authority is requested after a predetermined time has elapsed with respect to the stored pay broadcasting program, or if a canceling command is input by a subscriber request, the stored pay broadcasting program is stored. It may be configured to further include a deletion step of deleting.

The broadcast receiving apparatus of the present invention for achieving the above object is a broadcast receiving unit for receiving a broadcast program selection message including a pay broadcast program selection message including the identification number of the pay broadcast program transmitted from the broadcast transmission device and the pay broadcast program including the same And storing the paid broadcast program and controlling the broadcast receiver to receive the paid broadcast program from a corresponding broadcast transmission channel of a pay broadcast program corresponding to the pay broadcast program selection message. After storing in the storage unit, the subscriber is configured to include a control unit for reading and playing the pay-TV program stored in the storage unit.

In this case, the pay broadcast selection message may be any one of all pay broadcast program selection messages transmitted from the broadcast transmission device, a pay broadcast program selection message specified by the broadcast transmission device, and a pay broadcast program selection message selected by the subscriber request. have.

In addition, the control unit does not receive confirmation information that the viewing right is requested for the paying broadcast program after a predetermined time has elapsed with respect to the paying broadcast program stored in the storage unit, or if a viewing cancel command is input by a subscriber request, The paid broadcast program stored in the unit may be deleted.

To achieve the above object, the pay broadcasting system of the present invention scrambles and stores a pay broadcast program, and then transmits the stored pay broadcast program according to a predetermined time, and the entitlement management message including a pay broadcast program selection message and entitlement. The broadcast signal and the entitlement management message of the pay broadcast program from the broadcast transmission device and the broadcast transmission device for generating a control message and transmitting it as one broadcast signal together with the pay broadcast program, and managing a request command and a purchase history of a subscriber. And when the entitlement control message is received, select and store a paid broadcast program based on the selection message of the entitlement management message, request the viewing authority for the stored paid broadcast program to the broadcast transmitting device, and if the request is authenticated, The above qualification management mesh It is configured to include the broadcast receiving apparatus and the entitlement control message playback by descrambling the scrambled pay-TV program by using the.

At this time, the broadcast transmission device generates a broadcast server for transmitting the scrambled pay broadcast program at a predetermined time, the entitlement management message and the entitlement control message including the pay broadcast program selection message, and the subscriber's authentication information and purchase details. And a broadcast transmitter for modulating, multiplexing and multiplexing the entitlement management message and entitlement control message from the CAS server and the pay server from the broadcast server and the CAS server.

The broadcast receiving apparatus may further include a broadcast receiving unit receiving a broadcast signal of a pay broadcasting program including a pay broadcast program selection message transmitted from the broadcast transmitting device, a storage unit storing the pay broadcasting program, and a pay broadcasting program selection message. The broadcast receiver controls the broadcast receiver to receive the paid broadcast program from the corresponding broadcast broadcast channel of the corresponding paid broadcast program, stores the received paid broadcast program in the storage unit, and then stores the paid broadcast program stored in the storage unit at the subscriber request. And a control unit for reading and playing the data.

According to the present invention, after storing the paid broadcast program transmitted from the broadcast transmission device to the subscriber broadcast receiving device, the subscriber can immediately view the paid broadcast program stored at the desired viewing time, thereby reducing the waiting time for the subscriber's viewing. There are advantages to it.

According to the present invention, since the subscriber makes a purchase decision within a predetermined period of time after storing the paid broadcast program requested by the subscriber to the subscriber broadcast receiving device, it is easy to decide to cancel viewing due to the change of subscriber, and difficulty in viewing due to transmission error occurs. There is an advantage that is not.

1 is a block diagram illustrating a pay broadcasting system to which the present invention is applied.
2 is a flowchart illustrating a basic concept of a method of providing a pay broadcasting service according to the present invention.
3 is a flowchart illustrating a first embodiment of a process of storing a pay broadcasting program in a pay broadcasting service providing method according to an exemplary embodiment of the present invention.
4 is a flowchart illustrating a second embodiment of a process of storing a pay broadcast program in a method of providing a pay broadcast service according to an embodiment of the present invention.
5 is a flowchart illustrating a third embodiment of a process of storing a pay broadcast program in the pay broadcast service providing method according to an exemplary embodiment of the present invention.
6 is a block diagram illustrating a configuration of a broadcast receiving apparatus according to an embodiment of the present invention.
7 is a block diagram showing a detailed configuration of a pay broadcasting system according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention. The same reference numerals are used for portions having similar functions and functions throughout the drawings.

1 is a block diagram illustrating a pay broadcasting system to which the present invention is applied.

Referring to FIG. 1, the pay broadcasting system includes a broadcast transmitting device 10 and a broadcast receiving device 20 that receives a pay broadcasting program from the broadcast transmitting device 10 through a broadcasting network.

The broadcast transmission device 10 includes a broadcast server 12 that transmits a paid broadcast program, a CAS (Conditional Access System) server 14 and the broadcast server 12 which allow only an authorized subscriber to use the paid broadcast program. And a broadcast transmitter 16 for multiplexing and transmitting the paid broadcast program transmitted from the CAS server 14 and the information transmitted from the CAS server 14 into one broadcast signal.

The CAS (Conditional Access System) encrypts a broadcast program so that a subscriber who receives the broadcast program can decrypt and use the broadcast program only when the subscriber has the authority to use the broadcast program. .

In more detail, the CAS server 14 scrambling to mix information such as voice and video of the broadcast program using a control word CW so that only authorized subscribers can access the broadcast program provided by the broadcast program provider. After scrambling, the broadcast server 12 transmits to the broadcast server 12 and the broadcast server 12 transmits the pay broadcast program according to a predetermined time and channel band.

At this time, the CAS server 14 includes an Entitlement Management Message (EMM) related to subscriber authentication information and an Entitlement Control Message (ECM) including paid broadcasting program protection information together with the paid broadcasting program. The entitlement management message (EMM) and the entitlement control message (ECM) are transmitted to the broadcast reception device 20 every 1 minute to 30 minutes or according to the time set in the broadcast transmission device 10. The broadcast is sent to the broadcast reception device 20.

The broadcast receiving device 20 decodes the scrambling by decoding the entitlement control message (ECM) when the subscriber authentication information of the received EMM is identical to the subscriber authentication information stored in the broadcast receiving device 20. The control word CW used in the above is obtained, and the paid broadcast program scrambled using the obtained control word CW is descrambled, thereby enabling viewing of the paid broadcast program.

A more detailed pay broadcasting system will be described later with reference to FIGS. 6 to 7.

2 is a flowchart illustrating a basic concept of a method of providing a pay broadcasting service according to the present invention.

Referring to FIG. 2, the method for providing a pay broadcast service according to the present invention is performed in the order of receiving a selection message (S100), storing (S200), and reproducing (S300).

The selection message receiving step (S100) is a step of receiving a pay broadcast program selection message, wherein the pay broadcast program selection message may be provided through an entitlement management message (EMM) associated with subscriber authentication information, the entitlement management message ( EMM) and may be transmitted in a separate message form.

In this case, the pay broadcast program selection message includes an identification number of the pay broadcast program transmitted from the broadcast transmission device.

The storing step (S200) is a step of receiving and storing the pay broadcast program corresponding to the received pay broadcast program selection message to the broadcast receiving device, and is closest to the current time in response to the pay broadcast program selection message. The pay broadcast program is selected, and the pay broadcast program is received from a corresponding broadcast transmission channel of the pay broadcast program and stored in a storage medium of the broadcast reception device.

Since the above-described steps S100 and S200 are preferably performed within a range that does not cause inconvenience to the subscriber's viewing of the broadcast, the steps S100 and S200 may be performed during a time when the broadcasting viewing ratio of the subscriber is low or when the subscriber does not watch the broadcasting.

In this case, the broadcast reception device may select and store all paid broadcast programs transmitted from the broadcast transmission device, store only a paid broadcast program designated by the broadcast transmission device, or store a paid broadcast program selected at the request of a subscriber. have.

A process of selecting and storing the pay broadcast program will be described in more detail with reference to FIGS. 3 to 5.

The reproducing step (S300) is a step of reproducing the pay-TV program when a subscriber requests to the pay-TV program stored in the broadcast receiving device.

In more detail, in order to watch the pay broadcast program stored in the broadcast reception device, the broadcast transmission device needs to be requested to view the pay broadcast program.

In this case, the viewing authority request for the pay broadcasting program may be requested to the broadcast transmitting device through various return passes.

For example, the subscriber wants to view the broadcast transmission device by using a return channel provided by the broadcast reception device, a method through a web, a method of using a call center, or a method of using a short message service (SMS). A request for viewing authority for a paid broadcast program is requested.

In more detail, first, a method of using a return channel provided by a broadcast receiving apparatus requests viewing authority using an electronic program guide (EPG).

The electronic program guide means that the program output information such as the subscriber's TV, the program information, the broadcast program guide information, etc. can be checked, and the user can select and input a broadcast program to watch.

When the subscriber checks the electronic program guide and selects and inputs a paid broadcast program to be watched using an input unit or a remote controller of the broadcast receiving apparatus, the broadcast receiving apparatus displays the identification number and subscriber identification number of the selected pay broadcasting program. It transmits to the broadcast transmission device and requests viewing authority of the pay program.

In this case, the broadcast receiving device includes an electronic program guide module, and transmits an identification number and a subscriber authentication number of a paid broadcast program to be watched by the broadcast transmitting device through a communication network, and thus may further include a separate device such as a modem. Can be.

The method through the web, the method using a call center, and the method using SMS request viewing authority of the pay broadcasting program to be watched through the telephone or SMS to the web or a broadcast transmitting device providing the pay broadcasting program.

At this time, the subscriber enters the name or identification number of the paid broadcast program to be watched, and enters the subscriber authentication number, the inputted information is transmitted to the broadcast transmission device to request the right to view the paid broadcast program.

When the viewing authority for the paid broadcasting program stored as described above is requested to the broadcast transmitting apparatus, the broadcasting transmitting apparatus checks whether the subscriber who requested the viewing authority is a valid subscriber. For example, if the subscriber who has requested the viewing right is a subscriber who has not paid for a long time, the broadcasting transmission device does not accept the viewing right even if the viewing right is requested. If the subscriber is a valid subscriber, the broadcast transmission device authenticates the subscriber authentication information requesting the viewing authority in the entitlement management message (EMM), the corresponding pay broadcasting program identification number that the subscriber requests viewing authority, and the authentication for descrambled the scrambled pay broadcasting program. Information, that is, a credential control message (ECM) containing control word (CW) information.

The broadcast receiving device that receives the entitlement management message EMM and the entitlement control message ECM determines whether the subscriber authentication information requesting the viewing right and the subscriber authentication information stored in the broadcast receiving device match.

If the subscriber authentication information and the subscriber authentication information stored in the broadcast receiving device are the same, the broadcast receiving device decrypts the entitlement control message (ECM) to obtain a control word (CW) and obtains the obtained control word (CW). The pay broadcasting program scrambled using CW) is descrambled, and the pay broadcasting program is changed into a viewable state so that the subscriber can watch it at any time.

In addition, when viewing of the pay broadcasting program is made, the broadcast receiving apparatus writes the viewing information about the pay broadcasting on the smart card included in the broadcast receiving apparatus, and the broadcast receiving apparatus displays the viewing information described in the smart card. Is transmitted to the broadcast transmission device immediately after requesting viewing authority or on a specific period basis, thereby enabling collective billing on a monthly basis.

In the embodiment of the present invention has been described as a payment method for the paid broadcast program requesting viewing rights as an example, a method of subtracting each time a paid broadcast program by purchasing a predetermined amount of token (token) in advance Prepaid is also available.

If the confirmation information that the viewing authority is requested after a predetermined time has not been received with respect to the paid broadcasting program stored in the broadcasting receiving apparatus or if a canceling command is input by a subscriber request, the broadcasting receiving apparatus stores the stored pay broadcasting program. You can also delete.

Hereinafter, a process of selecting and storing the pay broadcast program will be described in more detail.

3 is a flowchart illustrating a first embodiment of a process of storing a pay broadcasting program in a pay broadcasting service providing method according to an exemplary embodiment of the present invention.

Referring to FIG. 3, the broadcast reception device receives a pay broadcast program selection message including identification numbers of all pay broadcast programs transmitted from the broadcast transmission device (S10).

Thereafter, if there is a pre-stored pay broadcasting program in the broadcast receiving device (S20), after comparing the identification number of the pay broadcasting program selection message with the identification number of the pre-stored pay broadcasting program (S30), the pay broadcasting program If there is the pre-stored pay program ID number different from the identification number of the selection message, the pay broadcast program corresponding to the other identification number stored in the broadcast reception device is deleted (S40), and the pay broadcast program selection message identification number If there is another identification number other than the previously stored identification number (S50), only the pay broadcasting program corresponding to the remaining identification number except for the same identification number as the identification number of the previously stored pay broadcasting program is selectively selected from the broadcasting channel. Received and stored (S60).

In this case, if there is no paid broadcast program pre-stored in the broadcast receiving device in step S20, all paid broadcast programs are received and stored from the corresponding broadcast transmission channel of the pay broadcasting program corresponding to the pay broadcast program selection message (S70). Done.

Here, the pay broadcast program selection message including identification numbers of all pay broadcast programs transmitted from the broadcast transmitting device may be omitted by a predetermined agreement between the broadcast transmitting device and the broadcast receiving device.

In other words, the broadcast receiving apparatus can extract identification numbers of all pay broadcast programs transmitted from the broadcast transmitting apparatus, so that the above-described operation can be performed even if a separate selection message is not received from the broadcast transmitting apparatus. do.

Through the above process, it is possible to store all paid broadcast programs transmitted from the broadcast transmission device, and only pay broadcasting programs newly stored in the broadcast transmission device or paid broadcasts no longer transmitted by the broadcast transmission device. The program may be deleted from the subscriber broadcasting receiver so that the contents of the paid broadcasting program storage database of the broadcast transmitting apparatus and the contents of the paid broadcasting program stored in the broadcasting receiving apparatus are the same.

4 is a flowchart illustrating a second embodiment of a process of storing a pay broadcast program in a method of providing a pay broadcast service according to an embodiment of the present invention.

Referring to FIG. 4, in the receiving of the selection message, the pay broadcasting program selection message including the identification number of the pay broadcasting program designated by the broadcast transmitting apparatus among the pay broadcasting programs transmitted from the broadcast transmitting apparatus is received (S110). ).

For example, a paid broadcast program provider that transmits a paid broadcast program to the broadcast receiving device may use a paid broadcast program having a similar nature based on a past purchase tendency of subscribers other than a recently registered pay broadcasting program and a promotional pay program. May be specified by recommending or recommending a pay program that is popular among other subscribers, and may transmit a designated pay program selection message to the broadcast receiving device.

Thereafter, the broadcast reception device selectively receives and stores only the pay broadcast programs corresponding to the selection message among the pay broadcast programs transmitted from the broadcast transmission device (S120).

As a result, the pay-TV program suitable for the subscriber's disposition is stored in the storage medium of the broadcast receiving apparatus, thereby inducing the viewing purchase of the subscriber.

5 is a flowchart illustrating a third embodiment of a process of storing a pay broadcast program in the pay broadcast service providing method according to an exemplary embodiment of the present invention.

Referring to FIG. 5, in the receiving of the selection message, the pay broadcasting program selection message including the identification number of the pay broadcasting program selected at the request of the subscriber among the pay broadcasting programs transmitted from the broadcast transmitting device is received (S210). ).

In this case, the subscriber may transmit a request for selecting a desired pay program to the broadcast transmission device through various return paths.

For example, a subscriber wants to watch a paying service to the broadcast transmission device through a return channel provided by a broadcast reception device, a method through a web, a call center, or a method using a short message service (SMS). A request for selection of a broadcast program may be requested.

The selection request for the paid broadcast program here means to reserve the storage for the paid broadcast program that is highly likely to be viewed in the future. In this step, the charge for the selected paid broadcast program is not made. In addition, the subscriber may select a pay program in a form of directly designating a particular pay program, but if the subscriber selects a genre or actor that is of interest, the subscriber may receive all pay programs related to the genre or actor. It can also be done.

The broadcast transmission device selects a pay broadcast program by reflecting the subscriber's selection described above, and transmits a pay broadcast program selection message including an identification number of the selected pay broadcast program to the broadcast receiving device. Only the paid broadcast program corresponding to the paid broadcast program selection message is selectively received and stored from the corresponding broadcast transmission channel (S220).

As described above, the broadcast receiving apparatus selects and stores all paid broadcast programs transmitted from the broadcast transmitting apparatus, stores the paid broadcasting program designated by the broadcast transmitting apparatus, or stores the paid broadcasting program selected at the request of the subscriber. Since it is stored in the viewer to watch, there is an advantage that the subscriber can immediately play at the point of time that the subscriber wants to watch, and the difficulty of viewing such as a transmission error due to an external environmental failure does not occur.

In addition, by storing a specific pay program in accordance with the subscriber's past purchase patterns and purchase inclinations from the broadcast transmission device to the broadcast receiver, purchases are induced, thereby enabling activation of the pay broadcast service industry.

6 is a block diagram illustrating a configuration of a broadcast receiving apparatus according to an embodiment of the present invention.

Referring to FIG. 6, the broadcast reception device 200 according to the embodiment of the present invention includes a broadcast reception unit 210, a storage unit 220, and a control unit 230.

The broadcast receiving unit 210 receives a selection message including an identification number of a pay broadcast program transmitted from a broadcast transmission device and a broadcast signal of a pay broadcast program including the same through an antenna, wherein the broadcast signal is transmitted by digital transmission. Satellite broadcast signals, cable broadcast signals (CATV), terrestrial waves, and the like can be anything.

The broadcast receiver 210 selects a channel frequency corresponding to the tune control signal of the controller 230 to be described later among the broadcast signals transmitted from the broadcast transmitter, and receives the tuner 212 to receive the broadcast signal. A demodulator 214 for demodulating a broadcast signal of a specific channel frequency, the audio and video information of the pay-TV program, an entitlement management message (EMM), and an entitlement control message from the demodulated broadcast signal output through the demodulator 214 ( The demultiplexer 215 demultiplexes the ECM.

The entitlement management message (EMM) in the present invention may further include a selection message including an identification number of the pay broadcasting program.

The storage unit 220 stores the pay broadcast program, and may be implemented as, for example, an internal HDD located inside the broadcast reception device 200, a USB (Universal Serial Bus) memory connected to an external device, an external HDD, or the like. connect.

The controller 230 controls the broadcast receiving unit 210 to receive the pay broadcast program from the broadcast transmission channel of the pay broadcast program corresponding to the identification number based on the identification number of the pay broadcast program selection message. The paid broadcast program is stored in the storage unit 220, and the subscriber is controlled to read and play the paid broadcast program stored in the storage unit 220.

In other words, the control unit 230 selects and receives a tuning control signal to receive the corresponding broadcast transmission channel frequency of the pay broadcast program closest to the current time based on the identification number of the pay broadcast program included in the pay broadcast program selection message. It generates and transmits to the tuner 212 and controls to receive the pay broadcast program.

In addition, if the confirmation information that the viewing authority is requested for the pay broadcasting program is not received after a predetermined time has elapsed with respect to the pay broadcasting program stored in the storage unit 220, or if a viewing cancel command is input by the subscriber request, the controller ( 230 may delete the pay broadcast program stored in the storage 220.

If the broadcast transmission device receives a viewing right request from the broadcast receiving device and receives the entitlement management message (EMM) and the entitlement control message (ECM) including the paid broadcast program identification number requesting the viewing right, the controller ( 230 determines whether the subscriber authentication information of the entitlement management message (EMM) and the subscriber authentication information stored in the smart card recognition unit 250 to be described later are the same, and if the same subscriber authentication information, decrypts the entitlement control message (ECM). The control word CW is obtained.

The controller 230 transmits the obtained control word CW to the descrambler 240 to be described later to control the descramble of the pay broadcast program stored in the storage 220.

The broadcast reception device 200 according to an embodiment of the present invention may further include a descrambler 24, a smart card recognition unit 250, an image output unit 260, and an input unit 270. .

The descrambler 240 descrambles the scrambled pay program using the control word CW transmitted under the control of the controller 230.

The smart card reader 250 reads the purchase history of the subscriber from the smart card in addition to the subscriber authentication information, that is, the usage information of the paid broadcasting program such as the accumulated time of viewing, the number of viewed programs, the accumulated amount of watching, etc. The purchase history is transmitted to the broadcast transmission device immediately or on a specific period basis, and the broadcast transmission device charges the subscriber based on this. If the subscriber is not in a normal billing state for a long time, the broadcast transmission device may record information about this to limit the subscriber's viewing of a paid broadcast program in the future.

The video output unit 260 outputs video information and audio information of the descrambled pay program, and outputs the video information through a display device, and, in the case of the audio information, through a sound source output device such as a speaker. Output

The input unit 270 receives a subscriber's command including a subscriber's viewing authority request command and transmits it to the controller 230, and the input unit 270 may be provided in the broadcast receiving device 200. It may be in the form of wireless communication with the broadcast receiving device 200, such as a remote control.

The broadcast receiving apparatus according to the embodiment of the present invention has been described above. Although the broadcast receiving device 200 according to an embodiment of the present invention has been described using the broadcast receiving unit 210 having one tuner as an example, a broadcast receiving device 200 having two or more tuners is also possible. At the same time as watching a program, a paid broadcast program broadcast on another channel may be stored as a storage medium of the broadcast receiving apparatus.

7 is a block diagram showing a detailed configuration of a pay broadcasting system according to an embodiment of the present invention.

6 to 7, the pay broadcasting system 300 according to the embodiment of the present invention includes a broadcast transmitting device 100 and a broadcast receiving device 200.

The broadcast transmission device 100 scrambles and stores a pay broadcast program, and transmits the stored pay broadcast program according to a predetermined time, and includes an entitlement management message (EMM) and an entitlement control message (ECM) including a pay broadcast program selection message. It is transmitted through the broadcasting network as a single broadcast signal with the pay-TV program, and manages the subscriber's request command and purchase history.

In this case, the broadcast transmission device 100 includes a broadcast server 110, a CAS server 120, and a broadcast transmitter 130.

The broadcast server 110 transmits the scrambled pay broadcast program at a predetermined time, the broadcast DB 112 storing the pay broadcast program and the identification number of the pay broadcast program, the broadcast transmission time of the pay broadcast program, And a broadcast controller 116 for transmitting the pay broadcast program to the broadcast transmitter 130 according to a set state of the scheduler 114.

In this case, the broadcast DB 112 classifies the scrambled pay broadcast program by program characteristics and stores the ID number with the identification number, and the broadcast control unit 116 stores the identification number stored in the broadcast DB 112 again in the scheduler ( The scheduler 114 stores the identification number, the broadcasting transmission time, and the broadcasting transmission channel information of the pay broadcasting program.

The CAS server 120 generates the entitlement management message and the entitlement control message, and manages the subscriber's authentication information and purchase details, and includes a scrambler unit 121, a CW generator 122, an ECM generator 123, and a CAS. The controller 124, the selection message generator 125, the subscriber manager 126, and the EMM generator 127 are configured.

The scrambler 121 performs scrambling by mixing information such as voice and video of the pay broadcasting program, and performs the scrambling by using the control word CW provided from the CW generator 122.

The CW generator 122 generates the control word CW. The control word CW is randomly generated and is periodically changed.

In addition, the CW generation unit 122 transmits the identification number in the form of a serial number used as a pay broadcasting program identification number to the scrambler 121 and the ECM generation unit 123 together with the control word CW.

The ECM generator 123 generates an entitlement control message (ECM), which is a message used to protect a paid broadcast program. The ECM generator 123 encrypts the control word CW received from the CW generator 122 to enumerate the entitlement control message (ECM). ) Is generated and then the generated qualification control message (ECM) is transmitted to the broadcast transmitter 130.

The CAS controller 124 is in charge of controlling the entire CAS server. The CAS controller 124 receives an ID number for each paid broadcast program from the scheduler 114 of the broadcast server 110 and transmits the identification number to the selection message generator 125.

At this time, the CAS control unit 124 transmits the identification number of all the pay broadcasting programs to the selection message generating unit 125 or sends the identification number of the specific pay broadcasting program selected by the CAS control unit 124 to the selection message generating unit. Or forward to 125.

That is, the CAS controller 124 may grasp the purchase history for each subscriber, that is, the past purchase tendency, stored in the subscriber management unit 126 which will be described later, select a similar paid broadcast program, and then transfer the same to the selection message generator 125. The identification number of the pay broadcasting program selected by the subscriber may be transmitted to the selection message generator 125.

In this case, the subscriber may select a specific pay broadcasting program using a method such as a return channel, a web, a call center, and an SMS, and the broadcast transmission device 100 may return a server to receive the request information of the subscriber. May be further constructed separately.

The selection message generating unit 125 generates a pay broadcasting program selection message including a pay broadcasting program identification number received from the CAS control unit 124 and sends the generated pay broadcasting program selection message to the EMM generating unit 127. Will be delivered.

The broadcast transmission apparatus 100 according to an embodiment of the present invention will be described with an example of separately including the selection message generator 125 for generating the pay broadcast program selection message, but the selection message generator 125 ) May be present in an integrated form with the EMM generator 127.

The subscriber manager 126 plays a role of managing the subscriber's qualifications such as a purchase history and authentication information of the subscriber. In this case, the subscriber manager 126 receives program purchase history information from the broadcast reception device 200 on a monthly basis or a specific period basis, and receives the viewing authority request information of the subscriber.

The EMM generating unit 127 works with the subscriber management unit 126 to generate an entitlement management message (EMM) used for subscriber authentication, and encrypts the entitlement control message (ECM) and the viewer qualification for each subscriber. The information is included and transmitted to the broadcast transmitter 130.

When the paid broadcast program information, the entitlement management message (EMM) and the entitlement control message (ECM) are transmitted to the broadcast transmitter 130, the broadcast transmitter 130 receives the broadcast program information and the entitlement management message (EMM). ), The entitlement control message (ECM) is converted into a modulated signal through the modulator 132 and transmitted as a single broadcast signal to the broadcast receiving apparatus 200 through the multiplexer 134.

Since the detailed description of the broadcast receiving device 200 has been described in detail with reference to FIG. 5, a redundant description thereof will be omitted, and a description will be given focusing on an operation process of the broadcast transmitting device 100 and the broadcast receiving device 100.

The broadcast receiving device 200 receives the one broadcast signal multiplexed through the broadcast receiving unit 210, and converts the broadcast signal into pay program information, the entitlement management message (EMM), and a entitlement control message (ECM). Demultiplex

The control unit 230 of the broadcast receiving device 200 receives and stores a paid broadcast program corresponding to a paid broadcast program selection message of the entitlement management message (EMM), and a subscriber receives a viewing right for the stored paid broadcast program. The broadcast transmission device 100 is requested by using a return channel, a web, a call center, and an SMS.

The return path server (not shown) of the broadcast transmission device 100 receives the viewing authority request information of the subscriber and transmits the received information to the subscriber management unit 126. The subscriber manager 126 determines whether the subscriber is a valid subscriber based on authentication information of the subscriber who requested the viewing authority. In other words, even if the subscriber has requested the viewing authority through the purchase history of the subscriber who requested the viewing authority, even if the viewing authority is requested, the subscriber management unit 126 does not accept the qualification management message ( EMM) transmits the information about it to the broadcast receiving device 200 or transfers the information about it to a return path server (not shown), and the return path server (not shown) is connected with the viewing authority request path of the subscriber. The same information may be sent back to the subscriber indicating that billing has not been paid.

If the subscriber is a valid subscriber, the subscriber management unit 126 transmits the identification number of the paid broadcast program and the authentication information of the subscriber to the EMM generation unit 127 to which the subscriber requests viewing authority, and the EMM generation unit 127 manages the qualification. In the message (EMM), the subscriber transmits the identification number of the pay-TV program and the authentication information of the subscriber, to which the subscriber requests viewing authority, to the broadcast receiving device 200.

In addition, the ECM generator 123 also transmits the entitlement control message (ECM) to the broadcast receiving device 200 together with the entitlement management message (EMM).

When the broadcast reception device 200 receives the entitlement management message (EMM) including the identification number of the pay-TV program and the subscriber's authentication information, which the subscriber requests to view, the smart card recognition unit 250. It is determined whether the same subscriber is compared to the authentication information stored in the).

If the authentication information of the subscriber requesting the viewing right and the subscriber authentication information stored in the smart card recognition unit 250 are the same, the control unit 230 of the broadcast reception device 200 decodes the entitlement control message ECM. When the control word CW is obtained and descrambled by the descrambler 240 using the obtained control word CW, the pay broadcasting program is in a viewable state.

The pay broadcasting system according to the embodiment of the present invention transmits the pay broadcasting program selection message to the broadcast receiving apparatus by including the EMM in the entitlement management message (EMM). There is an advantage.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be appreciated by those skilled in the art that numerous changes and modifications can be made to the invention. And all such modifications and changes as fall within the scope of the present invention are therefore to be regarded as being within the scope of the present invention.

100: broadcast transmission device 110: broadcast server
120: CAS server 130: broadcast transmitter
200: broadcast receiving device 210: broadcast receiving unit
220: storage unit 230: control unit
240: descrambler 250: smart card recognition unit
260: video output unit 270: input unit
300: pay broadcasting system

Claims (16)

A selection message receiving step of receiving a pay broadcasting program selection message including an identification number of a pay broadcasting program transmitted from the broadcast transmitting device;
When receiving and storing the pay broadcasting program from the corresponding broadcast transmission channel of the pay broadcasting program corresponding to the pay broadcasting program selection message, if there is a pay broadcasting program previously stored in the broadcast receiving apparatus, the identification number of the pay broadcasting program selection message After comparing the identification number of the pre-stored pay-TV program, if there is a pre-stored pay program identification number different from the identification number of the pay-TV program selection message, delete the pay-TV program corresponding to the other identification number A storage step of receiving and storing only the pay broadcasting programs corresponding to the remaining identification numbers other than the stored identification numbers of the pay broadcasting programs among the identification numbers of the pay broadcasting program selection message from the corresponding broadcast transmission channel; And
A playback step of playing back the paid broadcasting program stored at the subscriber's request;
Paid broadcasting service providing method comprising a. delete delete The method of claim 1, wherein the storing step
If the pre-stored paying broadcast program does not exist in the broadcast receiving device, the paying broadcast may be received and stored from the corresponding broadcast transmission channel of all paying broadcast programs corresponding to the paying broadcast program selection message. How we deliver the service. The method of claim 1,
In the step of receiving the selection message,
The paid broadcast program selection message including identification numbers of all pay broadcast programs transmitted from the broadcast transmitting device may be omitted by a predetermined agreement between the broadcast transmitting device and the broadcast receiving device. Way. The method of claim 1, wherein the receiving of the selection message
And a paid broadcast program selection message including an identification number of a paid broadcast program designated by the broadcast transmitting device among paid broadcast programs transmitted from the broadcast transmitting device. The method of claim 6, wherein the receiving of the selection message is
Among the paid broadcast programs transmitted from the broadcast transmission device, the paid broadcast program recently registered by the broadcast transmission device, the paid broadcast program for promotion, the paid broadcast program similar to the subscriber's past purchase tendency, and the most paid by other subscribers A paid broadcast service providing method comprising receiving a paid broadcast program selection message including an identification number of a paid broadcast program centered on the broadcast program. A selection message receiving step of receiving a pay broadcasting program selection message including an identification number of a pay broadcasting program selected at the request of a subscriber among pay broadcasting programs transmitted from the broadcast transmitting device;
A storing step of receiving and storing the pay broadcasting program from a corresponding broadcast transmission channel of the pay broadcasting program corresponding to the pay broadcasting program selection message;
A playback step of playing back the pre-stored pay program in response to a request of the subscriber;
Paid broadcasting service providing method comprising a. The method of claim 8, wherein the receiving of the selection message is
The pay broadcasting service providing method of claim 1, wherein the pay broadcasting program selection message including the identification number of the selected pay broadcasting program is received by requesting the broadcast transmitting apparatus through a return path among pay broadcasting programs transmitted from the broadcast transmitting apparatus. The method according to claim 1 or 8,
A deletion step of deleting the stored paid broadcast program if confirmation information that a viewing authority is requested after a predetermined time has elapsed for the stored paid broadcast program or if a cancel command is input by a subscriber request;
Paid broadcasting service providing method characterized in that it further comprises. delete delete Transmitting, by the broadcast transmission device, a credential management message and a credential control message including a scrambled pay broadcast program and a selection message for the pay broadcast program as one broadcast signal;
A reception step of receiving the broadcast signal from the broadcast reception device;
A storage step of the broadcast receiving device selecting and storing a paid broadcast program based on the selection message of the entitlement management message;
A request step for the broadcast receiving device to transmit a viewing right to the stored pay broadcasting program to the broadcast transmitting device;
A transmission step of authenticating, by the broadcast transmitting device, the request for viewing authority and, if authentication is successful, transmitting an authentication success message to the broadcast receiving device;
A reproduction step of the broadcast receiving device descrambling and playing the paid broadcast program scrambled using the entitlement management message and the entitlement control message;
Paid broadcasting service providing method comprising a. After scrambling and storing a paid broadcast program, the stored pay broadcast program is transmitted at a predetermined time, and a qualification management message and a qualification control message including a pay broadcast program selection message are generated to generate one broadcast signal together with the pay broadcast program. A broadcast transmission device for transmitting to the terminal and managing a subscriber's request command and purchase history; And
When the broadcast signal of the pay broadcast program, the entitlement management message and the entitlement control message are received from the broadcast transmission device, the pay broadcast program is selected and stored based on the selection message of the entitlement management message and stored in the stored pay broadcast program. A broadcast reception device for requesting viewing authority to the broadcast transmission device, and if the request is authenticated, descrambles and plays the paid broadcast program scrambled using the entitlement management message and the entitlement control message;
Paid broadcasting system comprising a. The apparatus of claim 14, wherein the broadcast transmission device is
A broadcast server for transmitting the scrambled pay broadcast program at a predetermined time;
A CAS server generating a qualification management message and a qualification control message including the pay broadcast program selection message and managing subscriber's authentication information and purchase details; And
A broadcast transmitter for modulating and multiplexing the entitlement management message and the entitlement control message from the pay broadcast program from the broadcast server and the CAS server and transmitting them as one broadcast signal;
Paid broadcasting system comprising a. The apparatus of claim 14, wherein the broadcast reception device is
A broadcast receiver configured to receive a broadcast signal of a pay broadcast program including a pay broadcast program selection message transmitted from the broadcast transmitter;
A storage unit storing the pay broadcasting program; And
The broadcast receiver controls the broadcast receiver to receive the pay broadcast program from a corresponding broadcast transmission channel of the pay broadcast program corresponding to the pay broadcast program selection message, stores the received pay broadcast program in the storage, and stores the received pay broadcast program at the subscriber request. A controller configured to read and play the paid broadcast program stored in the receiver;
Paid broadcasting system comprising a.

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