KR100204490B1 - A method of providing subscriber directed broadcasts which consider prior orders of subscribers in a near-video on demand service - Google Patents

Abstract

The present invention relates to a variable time interval service providing method having a time limit in an NVOD service, comprising: initializing a video server (S1); Setting a reference value of the required number of subscribers, the priority, and the number of broadcasts (S2); Setting a broadcast band and allocating all used bands (S3); Receiving a subscriber request (S4); Subscriber priority comparison step (S5); A fee calculation preparation step of paying per viewer (S6); Determining whether the number of service request subscribers is exceeded (S7); Waiting for the additional registration of the required subscribers, and then determining whether the number of required service subscribers is exceeded (S8); Service providing step (S9); Determining whether to register a new subscriber request (S10); Determining whether the broadcast number is exceeded (S11); Determining whether there is an extra band in the entire use band (S12); Allocating a new use band (S13); After increasing the number of broadcasts, it is a step of receiving a subscriber request (S14), according to the present invention, the priority given to the subscriber by incorporating a pay per view method to the variable time interval service providing method of the NVOD service providing method Differently providing the variable time interval services according to the ranking, and by paying a separate per-view fee for the discriminated services, it is effective to increase the subscriber's satisfaction with the service.

Description

A method of providing Subscriber Directed Broadcasts which consider prior orders of subscribers in a Near-Video On Demand service

1 is a diagram illustrating an example in which a service is provided at variable time intervals.

2 is a flowchart illustrating a conventional method for providing a variable time interval service.

Figure 3 shows the Gandum diagram showing the DAVIC (Digital Audio Visul Council) system reference model.

4 is a block diagram showing a system device among the DAVIC system reference models.

5 is a block diagram schematically showing the configuration of a Near-Video On Demand (NVOD) service system applied to the present invention.

6 is a flowchart illustrating a method for providing a variable time interval service in consideration of subscriber priority in an NVOD service according to the present invention.

* Explanation of symbols for main parts of the drawings

20: content provider 40: video server

41: storage library 42: first input output device

43: central processing unit 44: memory

45: second input and output device 60: transmission network

61 switch 62 network termination device

80: subscriber station 81: network connection device

82: set-top device 83: video / audio input / output device

The present invention relates in part to a method for providing a variable time interval service (Subsciber Directed Brodcast) in consideration of subscriber priority in a near-video on demand (NVOD) service, in particular in consideration of a priority given to a subscriber. The present invention relates to a method for providing a variable time interval service considering subscriber priority in an NVOD service that provides a variable time interval service differentially and separately charges the differentiated service, thereby providing a more satisfactory service to the subscriber. .

At this point in the 21st century, it is expected that many changes will occur in the entire society when the Information Super Highway, which is the social foundation of the future high-information society, is expected to change. Unlike interactive cable television (I-CATV) service, it is an interactivity service, so that subscriber's optional signal is transmitted to program provider so that subscriber can receive desired information at desired time. It is a combination of services. Among the services using the I-CATV service system, the VOD service receives the most attention in technical and commercial aspects.

The ideal VOD service should be able to provide any subscriber with the desired program at the desired time. However, the current VOD service cannot immediately see the program desired by all subscribers due to technical problems such as lack of transmission channel and lack of video program resources (program source, switching, etc.).

Therefore, before the ideal VOD service is provided, there is a need for a VOD service providing method in which a transmission band or a video program resource is relatively consumed. This is a NVOD service providing method.

FIG. 1 is a diagram illustrating one example of a method of providing a variable time interval service among the methods of providing the NVOD service to a subscriber.

As shown in FIG. 1, the variable time interval service providing method is a method of changing a program broadcast start time according to the number of subscribers requesting an NVOD service.

In other words, if the number of subscribers who want to watch a certain program exceeds a predetermined number, it is advantageous to be able to adapt to a popular program by starting broadcasting immediately. If the number does not exceed the predetermined number, the subscriber may not start broadcasting and waste a lot of time for the subscriber to receive the service, so the subscriber's satisfaction with the service is low.

2 is a flowchart illustrating a method of providing a variable time interval service. As shown in FIG. 2, the variable time interval service providing method is as follows.

First, the subject of each step is a service provider system that provides services to subscribers. As a preparatory work for providing a service to a service requester in a first step (S100), the service provider system is initialized and a band allocation preparation for providing a service is performed.

Subsequently, in order to set the standard of service provision in the initialized service provider system, the number of service request subscribers and the number of broadcasts are set in the second step S200.

In a third step S300, the service provider system sets available broadcast bands, and allocates all available bands according to the number of service request subscribers and the number of broadcasts set in the second step S200 within the set broadcast band.

In step S400, the subscriber request is registered. Subsequently, it is determined whether the number of service request subscribers registered so far in the fifth step S500 exceeds the number of service request subscribers set in the second step S200.

Subsequently, when the number of service request subscribers registered to date does not exceed the set number of service request subscribers, the sixth step S600 waits for further registration of the service request subscribers as a result of the determination in the fifth step S500. Go to the fourth step (S400).

On the other hand, when the number of service request subscribers registered so far exceeds the set number of service request subscribers as a result of the determination in the fifth step S500 in the seventh step S700, the service provider system provides the NVOD service to the subscriber. Start to provide.

After a predetermined time has elapsed, the service provider system determines whether the number of broadcasts up to now exceeds the number of broadcasts (hereinafter, referred to as the set broadcast frequency) set in the second step (S200). When the number of broadcasts to date exceeds the set number of broadcasts, the NOVD service is terminated.

Meanwhile, as a result of the determination in the eighth step S800 in the ninth step S900, when the number of broadcasts up to now does not exceed the set number of broadcasts, there is an extra use band in all the used bands up to the present. Judge

In the tenth step (S1000), when the determination result in the ninth step (S900) does not have an extra use band in the entire use band, a new use band is allocated.

On the other hand, when the determination result in the ninth step (S1100) in the eleventh step (S1100), there is an extra use band in the entire use band, or when a new use band is allocated in the tenth step (S1000), broadcast After increasing the number of times, go to the fourth step (S400).

That is, in the fourth step S400, the service provider system receives a subscriber request registration. Subsequently, by selectively passing through the fifth step (S500) to the eleventh step (S1100) and finally, providing the NVOD service when the number of broadcasts up to the present exceeds the set number of broadcasts, it is variable in all NVOD services. The time interval service provision process is terminated.

However, the above-described variable time interval service providing method does not provide a service if the number of subscribers requesting viewing for a given program does not exceed a predetermined number, no matter how much time elapses. Wasting a lot of time, the subscribers were not satisfied with the service. Accordingly, there is a demand for a method of providing NVOD services that can satisfy subscribers more.

Accordingly, the present invention is to increase the satisfaction of the service of the subscriber by satisfying the above requirements, and provides a variable time interval service differentially in consideration of the priority given to the subscriber of the NVOD service, and for the differentiated service The purpose is to provide a variable time interval service providing method considering the subscriber priority in the NVOD service to collect the royalties.

In order to achieve the above object, a variable time interval service providing method considering subscriber priority in a VOD service according to the present invention provides a service to a service requester in a video server providing service to a subscriber. A second step of initializing a video server as a preparation step for the first step; and a second step of setting the number of request subscribers, a priority, and the number of broadcasts, which are standards of service enhancement in the initialized video server: a service request set in the second step. A third step of setting a usable broadcast band according to the number of subscribers, a priority, and the number of broadcasts, and allocating a total use band within the set broadcast band: a fourth step of registering a subscriber request; A fifth step of determining whether the registered subscriber's priority is higher than the priority set in the second step: if the priority of the registered subscriber is higher than the set priority, The sixth step of preparing to calculate the per-view fee: The determination result in the fifth step, the number of service request subscribers registered so far if the priority of the registered subscriber is not higher than the priority set in the second step The seventh step of judging whether or not to exceed: as a result of the determination in the seventh step, if the number of registered service request subscribers does not exceed the set service request subscribers, the service request subscribers wait for the round and then go to step 5 Eighth step: When the preparation for calculating the auditorium per viewer is ready, or as a result of the determination in the seventh step, When the number of registered service request subscribers exceeds the set number of service request subscribers, the ninth step of providing video server company NVOD service to the requesting subscriber: after determining whether to register a new subscriber request, and as a result, Shiro is a subscriber request. If there is a registration, the tenth step to the fourth step: As a result of the determination in the tenth step, if there is no subscriber request registration, whether the number of broadcasts to date exceeds the number of broadcasts set in the second step is determined. After the determination, if the number of broadcasts up to the present exceeds the set number of broadcasts, the video server terminates the provision of the NVOD service. The eleventh step: as a result of the determination in the eleventh step, the number of broadcasts broadcasted so far is the set broadcast. If the number of times is not exceeded, it is determined whether there is an extra use band in all the current use bands. Step 12: If the result of the determination in the twelfth step is that there is no spare use band in all of the use bands, the thirteenth step of allocating a new use band: and as a result of the determination in the twelfth step, When there is a use band or when a new use band is allocated, the number of broadcasts is increased, and then the fourteenth step goes to the fourth step.

According to the present invention as described above, by applying a pay per view (PPV) to the variable time interval service providing method of the NVOD service providing method, the variable time interval service is differentiated according to the priority given to the subscriber By providing a separate fee for providing the discriminated service, the NVOD service that the subscriber is satisfied with is provided.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, the DAVIC system reference model will be described to help understand the present invention.

The NVOD service system applied to the present invention is implemented based on the Digital Audio Visual Council (DAVIC System Reference Model: DSRM), which is a private organization.

3 is a conceptual diagram illustrating the above DAVIC system reference model. In the DAVIC system reference model shown in FIG. 3, the system reference model is composed of system equipment (2: System Entities), information flow (4: Information Flow), reference points (6), and interface definitions (8: Interface Definitions). Divided into.

Here, the system apparatus 2 includes a service provider system (SP-1), a delivery system (DS-2-2), and a subscriber station (hereinafter referred to as STU). ).

In addition, the information flow 4 defines various types of information flowing through the DAVIC system reference model. The information flow 4 is largely divided into three aspects, a user side, a control side, and a management side.

That is, the information flow 4 includes the service content flow (SI) and the service command flow (S2) on the user side, the service related control flow (S3) and the related control flow (S4) on the control side, and the management side. It is divided into network and service management flow (S5).

The service content flow (SI) refers to an audio visual (AV) bit stream, that is, information content transmitted in the form of an MPEC-2 transport stream. For example, movie contents and information data.

In addition, the service command flow (S2) refers to the command information for controlling the service content flow (SI) and the response information for downloading the application (Down Loading).

The service related control flow (S3) performs the establishment or termination of a session for the service content flow (SI) and the service command flow (S2) and determines a quality of service (QoS). Elements, performance requirements of subscriber station 2-3, session delays, special information about basic services such as menu information, and the like.

Here, the session refers to a logical combination between two users (service provider system 2-1 or subscriber terminal 2-3 or more users) and provides a function of grouping and managing resources necessary to receive a service.

The network related control flow S4 is a protocol for providing a connection between the three devices (the service provider system 2-1, the delivery system 2-2, and the subscriber station 2-3). And a service management flow S5 refers to a flow of information including a connection service management requirement and a flow of information including a requirement for management of an application service, a session service, and a transport service.

Meanwhile, the reference point 6 is for interconnection between the service provider system 2-1, the delivery system 2-2, and the subscriber station 2-3, and is divided into A1-A11 according to its function. do.

Among them, the reference point A11 (6-1) is a content provider system (not shown: a kind of program maker for providing information to the service provider system 2-1). Interface with the delivery system 2-2 A11 (6-2) reference point defines an interface between the delivery system 2-2 and the service provider system 2-1. In addition, the A9- (6-3) reference point defines an interface between the service provider system 2-1 and the delivery system 2-2 based on an asynchronous transfer mode ATM0. , A1 (6-4) reference point defines an interface between the delivery system 2-2 and the subscriber station 2-3.

The interface definition 8 is also a physical definition defined for the interconnection method between the service provider system 2-1 and the delivery system 2-2 and the subscriber station 2-3.

FIG. 4 is a block diagram schematically illustrating a system device among the DAVIC system reference models of FIG. 4. The system device shown in FIG. 4 is composed of a service provider system 20, a delivery system 40, and a subscriber station 60.

In this case, the service provider system 20 includes a content service unit 21, an application service unit 22, a stream service unit 23, a service gate switch unit 24, a session controller 25, and a network controller 26. And a network connection beam 27.

In addition, the delivery system 40 includes a service-related control unit 41, a network-related control unit 42, a central network 43: a core network, and an access network 44: an access network and a home network 45: an in house network. do.

In addition, the subscriber station 60 includes a network interface unit 61, a set-top unit 62, and a video / audio input / output device 63.

The set-top device 62 includes a real payment processor 62-1, an application service processor 62-2, an application environment processor 62-3, an environment entity 62-3, and a network connection processor 62-4. Connectivity Entity).

Here, the service-related control unit 41 of the delivery system 40 connects the session control unit 25 and the subscriber station 60 of the service provider system 20, and the network-related control unit 42 is the service provider. The network control unit 26 of the system 20 and the subscriber station 60 is connected.

The central network 43 also provides for establishing a connection between the service provider system 20 and the subscriber station 60. In addition, the access network 44 transmits service information from the system other than the central network 43 and the service provider system 20 to the subscriber terminal 60 and multiplexes the service information. The home network 45 connects the endpoint of the access network 44 with the subscriber station 60.

In addition, the network connection device 61 receives the specific content report of the network transmitted from the delivery system 40, converts it into a state suitable for the subscriber station 60, and transmits the same to the network connection processing unit 62-4.

This network transmission device 61 is implemented as a separate device to enable transmission of the delivery system 40 and the subscriber station 60 with a minimum replacement of the device even if the specifications of the network are changed. That is, it is implemented as an external or plug play device.

In addition, the real processor 62-2 serves to receive or request a grand service and handles control information of all application services.

The operation environment processor 62-3 serves to create an environment in which the application service programs can operate, and the network connection processor 62-4 connects the subscriber terminal 60 and the network connection device 61 to each other. To ensure error-free telegram exchange.

In addition, the video / audio input / output device 63 outputs the video and audio signals input from the set-top device 62 so that the subscriber can see or hear the video or audio signal, or receives the video and audio signals of the subscriber.

The VOD service based on the DAVIC system reference model as described above is classified into a classification based on a service type, a classification based on a delivery network, and a classification based on a service providing method. Table 1 below shows NVOD services according to service type.

In addition, according to the delivery network that delivers VOD services are classified as follows. That is, the VOD service uses a satellite method, a complex method using a satellite and an existing telephone network, an Asymmetric Digital Subscriber Line (ADSL) method using an existing telephone network, a method using a CATV network, and a broadband-integrated service digital network. Network: can be implemented using ATM communication method using B-ISDN). Each characteristic is shown in Table 2.

Finally, the ideal VOD service should be able to provide any subscriber with the desired program at the desired time. However, the current VOD service cannot immediately see the desired program at the desired time due to technical problems such as lack of transmission channel and lack of video program resources (program source, switching).

Therefore, before the ideal VOD service is provided, it is necessary to provide a VOD service providing method in which a transmission band or a video program resource is relatively consumed. Such a providing method is an NVOD service providing method.

The NVOD service may be classified as shown in Table 3 below according to a service providing method.

5 is a block diagram schematically showing the configuration of the above NVOD service system applied to the present invention.

The NVOD service system shown in FIG. 5 is composed of a content provider 20, a video server 40, a delivery network 60, and a subscriber terminal 80.

The video server 40 includes a storage library 41, a first input / output device 42, a central processing unit 43, a memory 44, and a second input / output device 45. .

In addition, the transmission network 60 includes a video switch 61 and a network termination device 62.

The subscriber station 80 includes a network interface unit 81, a set top unit 82, and a video / audio input / output device 83.

On the other hand, the content provider 20 addresses the information content held and supplies it to the video server.

In addition, the video server 40 receives the addressed information content from the content provider 20 for transmission to the subscriber, and then processes the information appropriately so that the subscriber can view it, that is, for the subscriber terminal 80. Send it as a form.

That is, the storage library 41 stores the addressed information content received from the content provider 20, and the first input / output device 42 stores a video server except the storage library 41 and the storage library. It provides an interface between components.

The central processing unit 42 controls the entire video server, and the memory 44 serves as a storage space of the video server.

In addition, the second input-output device 45 provides a network connection between the video server 40 and the transmission network.

In addition, the video switch 61 supports a multimedia service and supports subscriber access to the video server 40 and flexible matching between the subscriber terminal 80, and the network termination device 62 includes the transmission network 60 and the subscriber terminal ( 80) is a device for connection.

In addition, the network connection device 81 receives only a specific transport stream from the transmission network 60, changes it into a form suitable for the set-top device 82, and delivers it to the set-top device 82.

The set-top device 82 demultiplexes, decodes, and decrypts the transport stream received from the network access device 81 and outputs the decoded data to the video / audio input / output device 83.

Accordingly, the video / audio input / output device 83 outputs the video and audio signals input from the set-top device 82 so that the subscriber can see or hear the video or audio signal, or receives the video and audio signals of the subscriber.

As a method of providing the subscriber with the VOD service configured as described above, a method of providing a time-shifted broadcast service, a method of providing a variable time interval service, and a method of partially exchanging service as shown in [Table 3] (Partially True VOD service) Provision method) and exchange service provision method (True VOD service provision method).

First, the method of providing a predetermined time interval service is to export the same program by using different channels at predetermined time intervals (for example, 5 to 10 minutes) so that a plurality of subscribers have relatively small programs and channels close to a desired time. The service is available, but the subscriber's satisfaction with the service is low.

In addition, the variable time interval service providing method is the same as the method for providing the fixed time interval service, except that the program broadcast start time is varied according to the number of subscribers. In other words, if the number of subscribers requesting viewing for a certain program exceeds a predetermined number, it is characterized by high adaptability to a popular program by immediately starting broadcasting.

In addition, the method of providing a partial exchange service is a method of introducing a switch so as to provide a program requested by a subscriber using the same channel or the same program source (Video Library). Bundling and exchanging a certain number of video streams is more economical than providing a separate dedicated channel for each subscriber, but there are technical difficulties in implementing a complete VOD function. The subscriber's satisfaction with the service is relatively good.

Lastly, the exchange service providing method is a service method that enables all functions such as rewinding, fast forwarding, pausing, and stopping such as owning a personal VCR by providing an independent dedicated channel to each subscriber. Satisfaction with the service is the maximum, but ultimately, a switch having a capacity equal to the number of subscribers is required. Therefore, there are many difficulties in installing a transmission network and investing in facilities.

Meanwhile, a fee calculation method for a VOD service provided by the above method is largely divided into two methods, one of which is a basic fee calculation method and the other is a fee payment method per viewer.

Here, the basic fee calculation method is a method of providing a predetermined program to a subscriber in a predetermined providing method and collecting the same royalty fee uniformly, and the pay-per-view fee calculation method is a method for a subscriber to request a service for a special program and a special providing method. Each time you say how to collect the royalties separately.

Accordingly, the present invention incorporates the pay per view payment method into the variable time interval service providing method, so that even if the number of service request subscribers up to now does not exceed a set value, the priority given to the subscriber is higher than the set priority. Provide service immediately. In addition, the service fee provided by the priority is separately added as much as watched.

That is, when any one subscriber requests a VOD service, if the priority of the service requesting subscriber is higher than the set priority, the service is provided immediately, whereas if the priority of the service requesting subscriber is lower than the reference priority, the existing variable is changed. Service is provided by the method of providing time interval service.

6 is a flowchart illustrating a method for providing a variable time interval service in consideration of subscriber priority in the above VOD service. The variable time interval service providing method considering the subscriber priority shown in FIG. 6 will be described with reference to FIG.

A band for initializing a register (not shown) or the like in the central processing unit 43 of the video server 40 as a preparation step for providing a service to the service requester in the first step S1, and providing a service. Prepare to assign

Subsequently, in order to set the standard of service provision in the initialized video server 40 in the second step S2, the number of required subscribers, priority and broadcast frequency are set.

That is, the central processing unit 43 in the video server 40 sets the reference number of service request subscribers, priority and broadcast frequency. In this case, the priority is given to a subscriber with a higher number of times of use, a subscriber with a higher credit rate, and a subscriber with a longer subscription period than other subscribers.

In the third step S3, the central processing unit 43 sets available broadcast bands according to the number of service request subscribers set in the second step S2, the priority and the number of broadcasts, and sets the entire broadcast band within the set broadcast band. Allocate a band of use.

Here, the broadcast band refers to a band currently available for the video server to provide a service, and the total use band refers to a band that can be used within the broadcast band according to the set number of required subscribers, priority, and the number of broadcasts. .

In the fourth step S4, the video server 40 receives a subscriber request.

In the fifth step S5, it is determined whether the registered subscriber's priority is higher than the priority set in the second step S2.

That is, by comparing the personal priority given according to the number of times of use, credit, and subscription period and the set priority, if the personal priority is higher than the set priority, go to step 6 (S6) and prepare to provide the service immediately. If the personal priority is lower than the set priority, go to step 7 (S7) and provide the service by the existing variable time interval service providing method.

Subsequently, when the determination result of the fifth step (S5) in the sixth step (S6), the priority of the registered subscriber is higher than the priority set in the second step, it is prepared to calculate the separate royalty.

On the other hand, if the priority of the registered subscriber is not higher than the priority set in the second step (S2) as a result of the determination in the fifth step (S5) in the seventh step (S7), the service registered so far It is determined whether the number of required subscribers exceeds the number of service required subscribers set in the second step S2.

As a result of the determination in the seventh step S7 in the eighth step S8, when the number of registered service request subscribers does not exceed the set number of the service request subscribers, the fifth step S5 after waiting for additional registration of the service request subscribers. Go back to) and register again.

That is, the NVOD service is not provided because the registered subscriber's priority is not higher than the priority set in the second step S2, and the number of service request subscribers does not exceed the set value.

When the preparation for calculating the separate user fee is finished in the ninth step (S9), or as a result of the determination in the seventh step (S7), when the number of registered service request subscribers exceeds the set service request subscribers, the video server Begin providing NVOD services to the requesting subscriber.

That is, even if the priority of the registered subscriber is not higher than the priority set in the second step (S2), the service can be provided if the number of service request subscribers is exceeded, and the priority of the registered subscriber even if the number of service request subscribers is insufficient. If is higher than the priority set in the second step (S2) it is possible to provide a service.

After determining whether to register a new subscriber request in the tenth step (S10), if there is a new subscriber request registration as a result of the determination, go to the fourth step (S4) and receive the subscriber request registration again.

As a result of the determination in the tenth step (S11) in the eleventh step (S11), if there is no new subscriber request registration, after determining whether the number of broadcasts so far exceeds the number of broadcasts set in the second step (S2) If the number of broadcasts to date exceeds the set number of broadcasts, the video server terminates the provision of the NVOD service.

As a result of the determination in the eleventh step S11 in the twelfth step S12, when the number of broadcasts broadcasted to the present does not exceed the set number of broadcasts, it is determined whether there is an extra use band in all used bands up to the present. do.

As a result of the determination in the thirteenth step S13 in the thirteenth step S13, when there is no spare use band in the entire use band, a new use band is allocated.

As a result of the determination in the twelfth step (S14) in the twelfth step (S12), if there is an extra use band in the entire use band, or if a new use band is allocated, the fourth step after increasing the number of broadcasts Go to S4.

That is, when the subscriber request registration is received again in the fourth step (S4) and selectively passes through the fifth step (S5) to the fourteenth step (S14), and finally the number of broadcasts to the present exceeds the set number of broadcasts. Since the video server terminates the NVOD service provision, the variable time interval service provision process considering the subscriber priority in all NVOD services is terminated.

Therefore, a subscriber whose priority is higher than the reference rank, which is evaluated by the reliability of any subscriber, is provided with the service immediately without time delay, and pays the per-view fee separately for the immediate service.

On the other hand, a subscriber whose priority is lower than the reference priority is provided with a service by a conventional variable time interval service providing method even if there is a time delay, and only the basic fee is paid for the service.

As described above, by incorporating a pay-per-view fee method into a variable time interval service providing method among the NVOD service providing methods, the variable time interval service is differentially provided according to the priority given to the subscriber, and By collecting a separate fee, it is effective to increase the subscriber's satisfaction with the service.

That is, even if the subscriber who is not satisfied with the conventional NVOD service can receive the service immediately even if the user pays a higher fee, the service close to the ideal VOD service is provided.

Claims (1)

CLAIMS 1. A method for providing an NVOD service to a subscriber in a video server, comprising: a first step (S1) of initializing a video server as a preparation step for providing a service to a service requesting subscriber; A second step (S2) of setting the required number of subscribers, priority, and the number of broadcasts, which are standards of service provision in the initialized video server; A third step (S3) of setting a usable broadcast band according to the number of service request subscribers set in the second step (S2), priority, and the number of broadcasts, and allocating all used bands within the set broadcast band; A fourth step (S4) of receiving a subscriber request; A fifth step (S5) of determining whether a priority of the registered subscriber is higher than a priority set in the second step (S2); As a result of the determination in the fifth step (S5), if the priority of the registered subscriber is higher than the priority set in the second step (S2), the sixth step of preparing to calculate the royalties paid per viewer ( S6); As a result of the determination in the fifth step S5, if the priority of the registered subscriber is not higher than the priority set in the second step S2, the number of service request subscribers registered so far is the second step S2. Determining whether the number of service request subscribers set in step S7 is exceeded (S7); As a result of the determination in the seventh step (S7), if the number of registered service request subscribers does not exceed the set number of service request subscribers, the eighth step (W5) after waiting for additional registration of the service request subscribers (S5); S8); When it is ready to calculate the fee for paying per viewer, or as a result of the determination in the seventh step S7, when the number of registered service request subscribers exceeds the set number of service request subscribers, the video server provides the NVOD service. A ninth step (S9) beginning to provide to the requesting subscriber; Determining whether to register a new subscriber request, and if the result of the determination is that there is a new subscriber request registration, a tenth step (S10) to the fourth step (S4); As a result of the determination in the tenth step S10, when there is no new subscriber request registration, it is determined whether the number of broadcasts up to now exceeds the number of broadcasts set in the second step S2, and then the number of broadcasts of the current branch An eleventh step (S11) in which the server terminates providing the NVOD service when the set number of broadcasts is exceeded; As a result of the determination in the eleventh step S11, when the number of broadcasts broadcasted to the present does not exceed the set number of broadcasts, a twelfth step of determining whether there is an extra use band in all used bands up to the present; ; A thirteenth step (S13) of allocating a new use band when there is no spare use band in the entire use band as a result of the determination in the twelfth step (S12); And as a result of the determination in the twelfth step S12, when there is an extra band in all the used bands or when a new use band is allocated, the number of broadcasts is increased, and then the fourteenth step (S4) is performed. A variable time interval service providing method considering subscriber priority in an NVOD service, comprising the step S14.