TWI788199B - Authorizing apparatus and method for video playback and computer program product for executing the method - Google Patents

Abstract

An authorizing apparatus and method for video playback and a computer program product for executing the method are provided. The method includes receiving an authorization inquiry of a user for a video from a video player, analyzing a risk indicator of the user for the video based on metadata of the video and user data of the user, calculating license duration of the video for the user based on the risk indicator of the user for the video, and returning the license duration of the video for the user to the video player.

Description

Authorization device and method for audio-visual playback and computer program product for executing the method

The present invention relates to an authorization technology for audio-visual playing, and in particular, relates to an authorization device, method and computer program product.

The vigorous development of Internet Protocol Television (IPTV) and Over The Top (OTT) services in the past decade has made it easier for people to watch movies and Video On Demand (VOD) through the Internet. Online audio and video, and therefore content providers pay more attention to the encryption protection of copyright audio and video when they are transmitted on the Internet and how to deal with playback authorization. The same is true on the consumer side. Watching high-quality copyrighted audio and video through authorized platforms has gradually become popular. Therefore, it is also necessary to find a win-win method for copyright audio and video licensing without affecting the rights and interests of consumers and content providers.

However, in the authorization method of the existing digital copyright system, the granting of the authorization time for copyright video and audio is often done through human intervention, such as setting a authorization time based on past experience, what's more, some operators will The burden on the digital rights system, and thus setting A license time that is longer than the length of an ordinary audio-visual film results in losing the meaning of managing authorization renewal and authorization time; and if the authorization time is set to a shorter time than the length of an ordinary audio-visual film, although it seems that the authorization management can be retained flexibility, but it will become a big burden on system servers with large authorization requirements. In the same way, this approach will apply the same license time to all videos in its digital copyright system, and also ignores the difference in the length of each licensed video, which is also not conducive to the management of license time for copyrighted videos.

Therefore, how to efficiently and flexibly provide the dynamic update of each license time is a problem to be solved at present.

In order to solve the above problems and other problems, the present invention discloses an authorization device and method for video and audio playback, and a computer program product for executing the method.

The authorization device for playing video and audio disclosed in the present invention includes: a receiving module, which receives a user's authorization inquiry for a video and video; Calculate the risk index of the user for the video; the calculation module calculates the authorization time of the video to the user based on the risk index of the user for the video; and the return module returns the video for the user The authorization time of the user.

In one embodiment, the metadata includes the click-to-play number, subscription number, and popularity weighting factor of the video, and the user information includes the suspicious weighting factor of the user.

In one embodiment, the risk indicator is associated with the click-to-play ratio, subscription ratio, popular weighting factor, and suspicious weighting factor of the video and audio.

In another embodiment, the authorization time is associated with the authorization time base value, the authorization time adjustment value and the risk indicator.

In yet another embodiment, the user's authorization query for the audio and video received by the receiving module is sent by an audio and video player according to the received user's playback request for the audio and video, and the return module It is to return the authorization time of the video to the user to the video player, so that the video player can play the video within the authorization time.

The authorization method for video playback disclosed in the present invention includes: receiving an authorization query from a user for a video; analyzing the user's risk indicators for the video according to the interpretation data of the video and the user information of the user; According to the risk index of the user for the video, calculate the authorization time of the video to the user; and return the authorization time of the video to the user.

In one embodiment, the metadata includes the click-to-play number, subscription number, and popularity weighting factor of the video, and the user information includes the suspicious weighting factor of the user.

In one embodiment, the risk indicator is associated with the click-to-play ratio, subscription ratio, popular weighting factor, and suspicious weighting factor of the video and audio.

In another embodiment, the authorization time is associated with the authorization time base value, the authorization time adjustment value and the risk indicator.

In yet another embodiment, the user's authorization query for the video is sent by an audio-visual player according to the received user's request for playing the video, and the video-video authorization time for the user is returned transmitted to the audio-visual player, so that the audio-visual player can play the audio-visual video within the authorized time.

The computer program product disclosed in the present invention is loaded into the computer program through the computer to execute the above-mentioned authorization method for video and audio playback.

Therefore, the present invention solves the problem that the fixed authorization time defined in the static description file in the server is applied to all encrypted audio and video in the past, that is, the load status, metadata and specific risk users of the actual server cannot be obtained. Adjust the authorization time in real time, and the current situation often only depends on the experience of the operator to determine the size, and it is almost seldom adjusted after setting. If the authorization time is set too short, it will easily lead to a heavy load on the authorization server, or if the setting is greater than Most audio-visual films lengthen the license time to reduce the frequency of user renewal authorization, and also lose the significance of authorization control and encrypted audio-visual protection.

With the authorization device and method for video playback disclosed in the present invention and the computer program product for executing the method, it is possible to propose an The standardized method dynamically estimates and continuously updates the authorization time setting for authorized users to watch encrypted audio and video before the authorization is issued, and provides efficient and flexible dynamic update of each authorization time.

2: Authorize the device

21: Receiving module

22: Analysis module

23: Calculation module

24: Return module

4: Video player

S201~S204: steps

S401~S406: steps

FIG. 1 is a schematic block diagram of an authorization device for video and audio playback according to the present invention.

FIG. 2 is a schematic flowchart of an embodiment of an authorization method for video and audio playback disclosed in the present invention.

FIG. 3 is a schematic flowchart of an embodiment of an authorization method for video and audio playback disclosed in the present invention.

The implementation of this case is described below through specific examples, and those skilled in this art can easily understand other advantages and effects of this case from the content disclosed herein. The structures, ratios, sizes, etc. shown in the drawings attached to this manual are only used to match the content disclosed in the manual, for the understanding and reading of those who are familiar with this technology, and are not used to limit the conditions that can be implemented in this case. Therefore, any modifications, changes or adjustments should still fall within the scope covered by the technical content disclosed in this case without affecting the functions and goals that can be achieved in this case.

Please refer to Fig. 1, the authorization device 2 used for audio-visual playback of the present invention is connected to the network of the audio-visual player 4, and the authorization device 2 includes a receiving module 21, an analysis module 22, a calculation module 23, and a return module twenty four.

In one embodiment, the authorization device 2 can be a remote or cloud server. In another embodiment, each module in Fig. 1 can be software, hardware or firmware; if it is hardware, it can be a processing unit, processor, computer with data processing and computing capabilities; if it is Software or firmware may include processing units, processors, and computer-executable instructions.

The receiving module 21 receives an authorization inquiry from a user of the audio-visual player 4 to an audio-visual through the network, wherein, the authorization inquiry of the user to the audio-visual is performed by the audio-visual player 4 according to the received user's authorization inquiry to the audio-visual Sent by playback request.

The analysis module 22 analyzes the user's risk indicators for the video according to the metadata of the video and the user information of the user, wherein the metadata includes the number of clicks to play, the number of subscriptions and the popularity weight of the video factor, and the user profile includes the user's suspect weighting factor.

Calculation module 23 calculates the authorization time of the video to the user according to the risk index of the user for the video, wherein the risk index is related to the ratio of the number of clicks to play, the ratio of the number of subscriptions and the popular weight of the video factor, and the user's suspicious weighting factor.

The return module 24 returns the authorization time of the video to the user to the audio-visual player 4, wherein the authorization time is related to the authorization time base value, the authorization time adjustment value and the risk indicator. In addition, the audio-visual player 4 judges whether the authorization needs to be renewed before the end of the authorization period. If the authorization does not need to be renewed, the audio-visual playback is terminated. If the authorization needs to be renewed, the user’s authorization query for the audio-visual is output again to the authorized device. 2.

Please refer to FIG. 2 , the authorization method for video and audio playback of the present invention includes steps S201 to S204, which are mainly executed by the authorization device.

In step S201, a user's authorization query for audio and video is received from the audio and video player, and then proceed to step S202.

In step S202, according to the interpretation data of the video and the user information of the user, analyze the user's risk indicators for the video in real time, and then proceed to step S203. In one embodiment, the metadata of the video includes the number of clicks and plays per unit period of the video, the number of subscriptions to the video on the service platform, and the popular weighting factor marked by the content provider of the video. Include the suspect weight factor for this user.

In step S203, according to the risk index, calculate the video-audio authorization time for the user, and then proceed to step S204. In one embodiment, the risk indicator is associated with the ratio of clicks and plays per unit period of the video, the ratio of subscriptions of the video on the service platform, the popular weighting factor marked by the content provider of the video, and the suspiciousness of the user. Weighting factor, carry out weighted average calculation, and then calculate the calculated value through the calculation of the maximum value and minimum value standardization, and obtain a value between 0 and 1, which is the risk indicator.

In step S204, the authorization time of the audio-visual to the user is returned to the audio-visual player. In one embodiment, the authorization time is associated with the authorization time base value, the authorization time adjustment value and the risk indicator.

Please refer to FIG. 3 , the authorization method for video and audio playback of the present invention includes steps S401 to S406 , which are mainly executed by the audio and video player.

In step S401, the user's video playback request is received, that is, the user clicks the play button to start watching the video, and then proceeds to step S402.

In step S402, according to the user's request for playing audio and video, output the user's authorization query for audio and video to the authorization device, that is, initiate a request for obtaining relevant authorization information and authorization time, and then proceed to step S403.

In step S403, the video-audio authorization time for the user is received from the authorization device, that is, after the audio-visual player obtains the authorization and the authorization time, it can play the decrypted encrypted video according to its content, and then proceed to step S404.

In step S404, before the end of the authorization period, it is determined whether to update the authorization, that is, to confirm whether the subsequent unfinished video and audio needs to be updated again. If yes, proceed to step S405, and output the user's authorization query for audio and video to the authorization device. If not, go to step S406 to end the playing of video and audio.

The method of the present invention is implemented in a server, computer or other equipment with functions of data processing, computing, storage, network communication, etc. alone or in multiple sets, wherein the server, computer or equipment includes central processing device, hard disk, memory, etc.

In addition, the computer program product of the present invention executes the method after the program is loaded into the computer, and the computer-readable recording medium (such as hard disk, floppy disk, optical disk, USB flash drive) of the present invention is store the computer program product. In addition, computer program products can also be directly transmitted and provided on the Internet, so computer program products refer to things that contain programs that can be read by computers and are not limited to external forms.

In addition, the present invention also provides a computer-readable medium, which is applied to a computing device or computer having a processor and/or memory, and the computer-readable medium stores instructions, and can be used by the computing device or computer through the processor and and/or the memory executes the computer-readable medium, so as to execute the above-mentioned method and/or content when executing the computer-readable medium.

The following examples illustrate specific embodiments of the authorization device, authorization method, computer program product, and computer-readable recording medium for audio-visual playback of the present invention.

First, the video player receives the user's request for playing encrypted videos, and asks the authorization device for authorization, that is, initiates a request to obtain relevant authorization information and authorization time. Then, the authorized device analyzes the risk indicators in real time based on the interpretation data of the encrypted video and the user data of the user. The risk indicators are the ratio of the number of clicks and plays of the audio and video on the service platform within a unit period of time, and the ratio of the number of subscriptions of the audio and video on the service platform. , the popular mark of the content provider of the audio and video, and the mark of whether the user is a suspicious person are calculated by weighted average, and then through the normalized calculation of the maximum and minimum values, a value between 0 and 1 is obtained. Calculate a license time based on this risk indicator, that is, the base value plus the adjusted value multiplied by the risk indicator, which is the license time for this time. Afterwards, the authorization device responds with the authorization and authorization time, and the video player can play the decrypted encrypted video according to its content after obtaining the authorization and authorization time. Before the license period is about to end, the video player judges whether the license needs to be renewed, and confirms whether the subsequent unfinished video and audio needs to be renewed again. If the authorization needs to be updated, the video player will ask the authorization server again for authorization; otherwise, the playback will end. In another embodiment, if the authorization needs to be updated multiple times, the relevant weights will be adjusted together with the increase in the number of authorization updates, so as to increase or decrease the possibility of authorization.

In one embodiment, the risk indicator calculation method is as follows:

r _n,t is the click-to-play number of video n in unit time t, S _n is the subscription number of video n, W _n is the popular weight factor of video n, and Wu _u is the suspicious weight factor of user u.

Next, standardize the risk index calculated above so that the risk index is between [0,1]:

r _n is the standardized risk index of audio-visual n, p _n is the risk index of audio-visual n, p _min is the minimum value of the risk index, and p _max is the maximum value of the risk index.

Next, the license time is calculated as follows:

dn = Dmin + Dbase . (1- r _n )

r _n is the standardized risk index of video n, d _n is the license time of video n (the unit can be seconds, minutes or hours), D _base is the adjustment value of license time, and D _min is the base value of license time.

Refer to Table 1 to Table 14, and use specific data to illustrate the calculation of the user's risk indicators for audio-visual and the authorization time of audio-visual for users.

Table 1: Click-to-play numbers of Video A, Video B, and Video C at different time periods.

In Table 1, the calculation of the ratio of the number of clicks to play during the period of 00:00-06:00 for video A is 132/1398, and the ratio of the number of clicks for playback of video B during the period of 00:00-06:00 is 56 /678, the calculation of the ratio of the number of clicks to play during the period of 00:00-06:00 of video C is 23/312. The calculation of the ratio of the number of clicks to play in other periods of video A, video B, and video C, and so on.

Table 2: The number of subscriptions and content provider logo information of Video A, Video B, and Video C.

In Table 2, the ratio of subscriptions for Video A is calculated as 704/1242, the ratio of subscriptions for Video B is calculated as 366/1242, and the ratio of subscriptions for Video C is calculated as 172/1242.

Table 3: Ratio of number of clicks to play * Ratio of subscriptions * popular mark of content provider for Video A, Video B, and Video C in different time periods.

Table 4: Suspicious person flags of users A, B, and C.

Table 5: User A’s risk index p _n , namely, the ratio of video A, video B, and video C in different time periods of the number of clicks to play * the ratio of subscriptions * popular flags of content providers * suspicious person flags of user A.

Table 6: User B’s risk index p _n , that is, the ratio of video A, video B, and video C in different periods of clicks and plays * ratio of subscriptions * content provider’s popular flag * user B’s suspicious person flag.

Table 7: User C’s risk index p _n , namely, the ratio of video A, video B, and video C in different periods of clicks and plays * ratio of subscriptions * popular flags of content providers * suspicious person flags of user C.

According to Table 5 to Table 7, the maximum value of the risk index p _max =6.48, that is, the risk index of user B for movie A during the period of 18:00-24:00, and the minimum value of the risk index P _min =0.03, that is User C's risk indicators for video C during the time period from 00:00 to 06:00.

Table 8: User A's standardized risk indicators for video A, B, and C, r _n .

Table 9: User B's standardized risk indicators for video A, B, and C, r _n .

Table 10: User C's standardized risk indicators for video A, B, and C, r _n .

Table 11: User A's authorization time d _n for audio and video A, B, and C, where the authorization time base value D _min =20, and the authorization time adjustment value D _base =30.

Table 12: User B's authorization time d _n for audio and video A, B, and C, where the authorization time base value D _min =20, and the authorization time adjustment value D _base =30.

Table 13: User C's authorization time d _n for audio and video A, B, and C, where the authorization time base value D _min =20, and the authorization time adjustment value D _base =30.

It can be seen from Table 11, Table 12, and Table 13 that under different time periods for the same user, the license time for different videos is changed, the license time for non-popular videos is lengthened, and the license time for popular videos is shortened Time, thereby reducing the number of times the audio-visual player asks for authorization, so as to balance the load or load of the authorized device. In another embodiment, the base value of authorization time and the adjustment value of authorization time can also be adjusted according to the number of clicks to play, the number of subscriptions, the popular marks of content providers, and the marks of suspicious persons, so as to facilitate The license time when the base value and the license time adjustment value change.

According to Table 11 to Table 13, it can be obtained, Table 14: Authorization time d _n of different users of video A in different time periods.

It can be seen from Table 14 that for the same audio and video at the same time period, different users are given varying authorization periods, and relatively short authorization periods are given to specific risk users, causing suspicious users to frequently update their authorizations, thereby reducing audiovisual The risk of being stolen, in order to achieve authorization control to protect encrypted videos. In another embodiment, the feedback mechanism can also be used to dynamically update to provide an optimized authorization time.

To sum up, the present invention discloses an encrypted audio-visual playback authorization technology, so that when the encrypted audio-visual authorization device issues the authorization and the license duration (License Duration), it can be based on the number of selected playbacks and the service platform of the past audio-visual unit period. The system load conditions such as the number of subscriptions on the Internet, dynamically estimate and continuously update the setting of the license period of the encrypted video during playback, that is, provide a dynamic estimate of the license time to provide decrypted encrypted videos within the license time, and if If the authorization time is exceeded and there is no further authorization, the encrypted state will be restored, so as to solve the past defects of artificially evaluating the length of time and the lack of settings for evaluating system load, and provide dynamic update of each authorization time efficiently and flexibly.

The above-mentioned embodiments are only illustrative of the effects of this case, and are not intended to limit this case. Any person familiar with this technology can modify and change the above-mentioned implementations without violating the spirit and scope of this case. Therefore, the scope of protection of rights in this case should be listed in the scope of patent application described later.

S201~S204: steps

Claims (9)

An authorization device for audio-visual playback, including: a receiving module, which receives a user's authorization inquiry for a video-audio through the network; an analysis module, which analyzes the audio-visual interpretation data and the user information The user’s risk indicators for the video, wherein the interpretation data includes the number of clicks to play, subscriptions and popular weighting factors of the video, and the user information includes the user’s suspicious weighting factor; the calculation module is based on the user The risk indicator of the video is used to calculate the authorization time of the video to the user; and the return module is to return the authorization time of the video to the user through the network. An authorization device for audio-visual playback, including: a receiving module, which receives a user's authorization inquiry for a video-audio through the network; an analysis module, which analyzes the audio-visual interpretation data and the user information The risk indicator of the user for the video, wherein the risk indicator is related to the ratio of the number of clicks to play, the ratio of the number of subscriptions, and the popular weight factor of the video, as well as the user’s suspicious weight factor; the calculation module is based on the user The risk indicator of the video is used to calculate the authorization time of the video to the user; and the return module is to return the authorization time of the video to the user through the network. The authorization device according to claim 1 or 2, wherein the authorization time is related to the authorization time base value, the authorization time adjustment value and the risk indicator. The authorization device as described in claim 1 or 2, wherein, the user’s authorization query for the audio and video received by the receiving module is based on the received user’s authorization for the audio and video by an audio and video player. The playback request is issued, and the return module is to return the authorized time of the video to the user to the video player, so that the video player can play the video within the licensed time. An authorization method for video playback, comprising: receiving a user's authorization inquiry for a video; analyzing the user's risk indicators for the video according to the interpretation data of the video and the user information of the user, wherein the interpretation The information includes the number of clicks to play, the number of subscriptions and the popular weight factor of the video, and the user information includes the user's suspicious weight factor; according to the risk indicator of the user to the video, the authorization of the video to the user is calculated time; and return the authorization time of the video to the user. An authorization method for video playback, comprising: receiving an authorization query from a user for a video; analyzing the user's risk indicators for the video according to the interpretation data of the video and the user information of the user, wherein the risk The indicator is related to the ratio of the number of clicks to play, the ratio of subscriptions, and the popular weight factor of the video, as well as the suspicious weight factor of the user; according to the risk index of the user to the video, the authorization of the video to the user is calculated time; and return the authorization time of the video to the user. The authorization method according to claim 5 or 6, wherein the authorization time is related to the authorization time base value, the authorization time adjustment value and the risk index. The authorization method as described in claim 5 or 6, wherein, the user's authorization query for the video is sent by an audio-visual player according to the received user's request for playing the video, and The authorized time of the audio-visual to the user is sent back to the audio-visual player for the audio-visual player to play the audio-visual within the authorized time. A computer program product loaded into a computer program to execute the authorization method described in any one of claims 5-8.

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