200937247 六、發明說明： 【發明所屬之技術領域3 發明領域 本發明落入存取控制之領域，以及更加與—種在一使 5用者終端機中管理由一經營者提供之數位内容的操作時間 的方法有關，該内容受具有由該經營者預定的—有效期的 一存取權保護。 本發明同樣與儲存在一媒體中且打算用於營理該内容 β 之一使用者的操作時間的一電腦程式有關。 10 本發明同樣與用於接收該内容的一終端機有關。 . 發明背景 諸如DRM(驗触版㈣理）或CAS(科條件存取系 統）的内容保護技術使經營者能夠在一特定時期内授予其 15客戶一内容存取權，其中該特定時期受表示權力有效的一 _起始日期，以及該權利的—有效終止日_限制其 » 巾使用者從該有效起始日㈣始受授權開始操作内容，以 及超出該有效終止日期，該内容不可以再被操作。 該權利有效期可同樣地由一滑動時間間隔，即預定持 2〇續時間組成，但是該有效期的起始日期沒有預先決定，以 及其將被使用者設定作為第-實際内容操作的起始日期。 在任何情況下’使用者都不可能在期滿後操作内容。 先前技術的-個缺點來自於以下事實，若使用者在内 容有效期期滿之前未能夠操作該内容而使他們失去操作該 3 200937247 内容的權利。 這種解決方案可能導致潛在使用者猶豫不決或甚至拒 絕購買或預訂服務。 此外，對於受一存取權保護之内容的操作而言，僅對 5 一個特定的終端機授權是很常見的’以避免與未經授權使 用該内容的使用者欺騙性地共享該内容。在這種情況下， 被提供内容存取權的漫遊使用者將不能暫時將該權利移交 給，例如一行動終端機。 本發明的目的是使内容的一最終使用者透過考慮以下 10 方面選擇其已獲准存取之該内容的操作時間：一方面，自 己的個人和/或專業限制’以及另一方面，在操作該内容之 網路和/或終端機中的可能特徵。 t發明内容：3 發明概要 15 本發明的目的憑藉一種管理經營者提供之數位内容之 -使用者的操作時間的方法來實現，該内容受具有由該經 營者預定義之一有效期的一存取權保護。 根據本發明的該方法包含以下步驟： -使該存取權與參數中的至少一個 2〇參數相關聯，該等參數的各自參數值指減有效期的前 移、後移或暫停是否受授權，以及 -若對該內容的操作在該·t沒㈣始，以及若該等參 一⑽、⑽及⑽的參數值授權此-時間移動，則在 —使用者終端機中於由該經營者預定義的關範圍内暫時 200937247 性地以及本地地移動該有效期，或者’ 5 鲁 10 15 Ο 20 _若對該内容的該操作在該時刻t已經開始，以及若該等 相關聯參數及1的該等參數值授權此一時 間移動，則在一使用者終端機中於由該經營者預定義的該 限制範圍内暫時性地以及本地地移動該有效期的尚未逝去 之部分。 根據本發明，該存取權進一步與分別指示最大數目的 授權前移、最大數目的授權後移以及最大數目的授權暫停 之參數及5中的至少一個參 數相關聯。 在本方法之一第一備選實施中，當該權利有效期由一 起始日期T1以及一終止曰期T2定義時，管理該内容操作時 間在於前移或後移該日期T1或該日期T2同一時間位移。 選擇性地，管理該内容操作時間在於暫時無限期地暫 停對該内容操作。 在本方法的一第二備選實施中，當該權利有效期僅由 —有效起始日期T1定義時，管理該内容操作時間在於於由 5亥經營者預定義的限制範圍内移動該有效起始日期T1，以 及當該權利有效期僅由一有效終止日期T2定義時，管理該 内各操作時間在於於由該經營者預定義的限制範圍内移動 該有效終止日期T2。 在本發明的一特定實施例中，由使用者預定義的限制 包含： -用於授權或禁止應用前移、後移以及暫停討論中之權 5 200937247 利之操作中的每一操作的一指示符。 根據本方法的一額外特性，由經營者預定義的該等限 制包含加速、延遲及暫停討論中之該權利之操作中的每一 操作的一最大數目的應用。 5 根據本發明的另—額外的特性，由該經營者預定義的 該等限制包含用於前移或後移的最大授權單位持續時間， 即討論中之該權利的前移或後移的最大授權範圍。 根據本方法的另一額外的特性，由該經營者預定義的 該等限制包含用於前移或後移的最大授權累計持續時間， 即討論中之該制的所有前移或後移的最大授權累計幅度。 根據本方法的另一額外的特性，該經營者設定使用者 可請求管理該内容操作時間的時期。 這樣，移動或暫停該權利有效時期的請求將被考慮， 只要其在由該經營者設定的該時期内被終端機接收。 15 根據本方法的另一的特性，由該經營者預定義的該等 限制包含-存取權期滿日期及一較低截止期限，在這之前 操作受該權利保護的内容不受授權。 根據本發明的-特性，對該内容操作時間的管理在一 使用者終端機中本地地遭執行。 20圖式簡單說明 本發明的其他特性及優點在參考概要地說明根據本發 明之方法的主要步驟的附加圖式的同時將從以下採取非限 制性S兒明目的的描述變得顯而易見。 第1圖是根據本發明之方法的主要步驟的-概要說明。 200937247 L資施方式 較佳實施例之詳細說明 5 ❹ 10 15 參 20 本發明將在一應用架構中透過示範性的實施例進行描 述，其中在該應用架構中，電信經營者將服務和拌碼内容 提供給使用者，每一使用者被提供配備一安全處理器的— 接收終端機。該等内容可以是受一條件存取控制系統(CAs) 或一數位版權管理(DRM)許可證保護的視聽節目或資料。 受保護的内容可根據若干可能的服務由使用者存取和 使用： -直播電視服務：内容透過廣播網路(衛星、電瘦、地面 無線電、廣播/多播模式IP··.)即時地向大量用户播出。 -VOD服務：根據用戶自己的請求，内容藉由致能用戶 個人定址的一分配網路（典型地多播模式下的—Ip網路）遭 發送至一特定用戶。 _PVR服務：（廣播或VOD)内容由在其接收終端機的用 戶或由網路經營者提供的ad hoc功能記錄；該用戶可精後透 過回顧該記錄存取該内容。 讓我們回顧一下，在DRM上下文中，更確切地說，在 OMADRM V2上下文中，對存取期限及權利的時間管理受 限於對存取權的時間有效準則的控制。這個準則可透過規 定實際消耗的受DRM許可證保護之内容的累計持續時間的 一“累積”類型限制，或規定權利有效之滑動時期的持續時 間的“間隔，，以持續時間的形式提供，否則透過規定由至少 一個起始日期及至少一個終止日期定義之一時間間隔的一 7 200937247 曰期線(dateline)類型限制以一時間間隔形式提供。 許可證的一滑動有效期被規定作為一時期，其在使用 者首次操作内容的日期開始以及不遲於該許可證的期滿曰 期結束。因此後者在一特定持續時間的一時間間隔中有 5 效’但是具有沒有預先決定的一起始日期。 為了使本方法能夠應用到DRM許可證定義的權利，經 營者使以下資訊與該權利相關聯： -由一起始日期T1及一終止日期T2決定的DRM許可證 的有效期， 10 -參數尺、尺及1〇尤，該等參數的參數值分別指 示該有效期的前移、後移或停止是否受授權， -分別指示最大數目的授權前移、最大數目的授權後移 以及最大數目的授權暫停的參數沢及 nb—Max_S， 15 -分別指示該授權前移及該授權後移之單位幅度的參 ^a_Max_U3Lr_Max_U。 -分別指示該授權前移及該授權後移之累計幅度的參 值得注意的是，根據由使用者選定的該方法所授權之 20 類型操作（移動或暫停），值、 一以該所選定之操作為基礎 而減小0 此外，經營者使一期滿日期TP和/或一較低有效性戴止 期限T0與該DRM許可證相關聯。 200937247 在操作期間，安裝在使用者終端機上的一DRM代理管 理與使用者的通訊介面，藉此使該通訊介面能夠提供該使 用者想要對他是其擁有者之存取權所應用之類型的操作 (移動或暫停）。 5 10 15 鲁 20 该通訊介面可由顯示在該使用者終端機螢幕之一視窗 上的一訊息，否則藉由該終端機播放的—聲音訊息組成。 第1圖是根據本發明之方法的主要步驟的一概要說 明。在第2步中，使用者藉由該通訊介面將所期望的處理的 描述提供給DRM代理。在第4步接收該描述後，該DRM代 理即驗證討論中之該權利是否仍有效，以及其是否暫時受 限’即其有效性是否是時間受限的。 在第6步中，若討論中之該權利已過時或若其暫時受 限，則該DRM代理藉由該通訊介面將—錯誤訊息傳送至該 使用者。 在第8步，右时論中之該權利沒有過時且暫時受限，則 該DRM代理藉由該通訊介面為使用者呈現由討論中之該權 利授權的處理。 在本方法的-第-備選實施中’當該權利有效期由— 起始日期T1及-終止日期T2定義時，由討論中之該權利授 權的處理在於前移該曰期T1與該日期丁2同一時間位移（第 1〇步），以及後移該Ti與該T2同—時間位移（第12步），否則 暫時使該内容停止一不確定時期（第14步）。 在第16步’右使用者選擇前移該有效期（第丄剛則該 DRM代理驗證參數（〇尤是否等於“真（t叫，，以及參數 9 200937247 是否大於或等於一。 在第17步’若這些條件不屬實，則該drm代理藉由該 通訊介面將一錯誤訊息傳送至該使用者。 在第18步，若該等條件屬實，則該使用者將所期望的 5 前移幅度傳送至該DRM代理。 在第20步，該DRM代理比較該幅度輸入與使用者預定 義的分別指示前移之單位幅度和累計幅度的參數 反 a Max C。 10 更確切地說，該DRM代理驗證是否： --幅度 a Max U， (Cl) --幅度 a_Max_C， (C2) -Max(data_current, TO) T1 -幅度 (C3) 15 在第21步，若條件(Cl)或(C2)中的至少一個條件不屬 實，則該DRM代理將一錯誤訊息藉由該通訊介面傳送至使 用者。 ' 若使用者對該許可證選擇一個新的有效期起始日期， 則該DRM代理透過用丨data—_时T1丨㈣取代該幅度 資料來執行以上驗證。 又 ,右條件(3)不屬實’則該DRM代理請求使用者接受該權 和之剩餘有效期的_截取，或者其—減小的移動幅度。 在第22步，該代理如下更新許可證中描述該權利有效 Τΐ=τΐ·幅度 Τ2=Τ2·幅度 20 200937247 nb_Max_A=nb_Max_A-1 a—Max_C : =a_Max_C-幅度 在第23步，若使用者選擇後移該有效期（第12步），則該 DRM代理驗證參數^0尺是否等於“真，，，以及參數j 5 是否大於或等於一。 在第24步，若這些條件不屬實’則該dRm代理將一錯 誤訊息藉由該通訊介面傳送至該使用者。200937247 VI. Description of the Invention: [Technical Field 3 of the Invention] Field of the Invention The present invention falls within the field of access control, and more specifically operates an operation for managing digital content provided by an operator in a 5 user terminal The method of time is related to the fact that the content is protected by an access right having an expiration date predetermined by the operator. The present invention is also related to a computer program stored in a medium and intended to operate the user's operating time of the content β. The present invention is also related to a terminal for receiving the content. BACKGROUND OF THE INVENTION Content protection technologies such as DRM (Tactile Verification) or CAS (Conditional Access System) enable an operator to grant 15 clients a content access for a specific period of time, wherein the particular period is represented The validity of the _start date, and the effective expiration date of the right _ restricts the user of the towel from the effective start date (four) to be authorized to start the operation content, and beyond the effective termination date, the content can no longer Being operated. The validity period of the right may equally consist of a sliding time interval, i.e., a predetermined duration, but the starting date of the validity period is not predetermined, and is to be set by the user as the starting date of the first-actual content operation. In any case, it is impossible for the user to operate the content after the expiration. A disadvantage of the prior art stems from the fact that if the user is unable to operate the content before the expiration of the content expiration date, they lose the right to operate the content of 200937247. This solution may cause potential users to hesitate or even refuse to purchase or book a service. Moreover, for operations that are subject to an access protection, it is common to authorize only one particular terminal device to avoid fraudulent sharing of the content with users who are not authorized to use the content. In this case, the roaming user who is provided with the content access right will not be able to temporarily hand over the right, such as a mobile terminal. It is an object of the present invention to enable an end user of content to select the operating time of the content to which he has been granted access by considering the following 10 aspects: on the one hand, his or her personal and/or professional limitations' and, on the other hand, operating the Possible features in the network and/or terminal of the content. SUMMARY OF THE INVENTION: 3 SUMMARY OF THE INVENTION The object of the present invention is achieved by a method of managing the user's operating time provided by the digital content provided by the operator, the content being subject to an access right having a validity period predefined by the operator protection. The method according to the invention comprises the steps of: - associating the access rights with at least one parameter of the parameters, the respective parameter values of the parameters indicating whether the forward, backward or pause of the reduced validity period is authorized, And - if the operation of the content begins at the beginning of the time, and if the parameter values of the parameters (10), (10), and (10) authorize the time-shift, then in the user terminal, the operator is pre- Within the defined scope, temporarily 200937247 sexually and locally moves the validity period, or '5 Lu 10 15 Ο 20 _ if the operation of the content has started at that time t, and if the associated parameters and 1 When the parameter value authorizes this time of movement, the portion of the validity period that has not passed away is temporarily and locally moved in a user terminal within the limit defined by the operator. In accordance with the present invention, the access rights are further associated with at least one of a parameter indicating the maximum number of authorization advances, a maximum number of authorized back-offs, and a maximum number of authorized suspensions, respectively. In a first alternative implementation of the method, when the validity period is defined by a start date T1 and a termination period T2, managing the content operation time is to advance or backward the date T1 or the date T2 at the same time Displacement. Optionally, managing the content operation time consists in temporarily suspending the content operation indefinitely. In a second alternative implementation of the method, when the validity period is defined only by the effective start date T1, managing the content operation time is to move the valid start within a predefined range predefined by the 5H operator. The date T1, and when the validity period is defined by only one valid termination date T2, managing the respective operation time lies in moving the effective termination date T2 within the limit defined by the operator. In a particular embodiment of the invention, the restrictions predefined by the user include: - an authority to authorize or prohibit the application from moving forward, backward, and suspending the discussion 5 200937247 an indicator of each operation in the operation . According to an additional feature of the method, the restrictions predefined by the operator include a maximum number of applications for accelerating, delaying, and suspending each of the operations of the right in the discussion. 5 According to another additional feature of the invention, the limits predefined by the operator include a maximum authorized unit duration for forward or backward movement, ie, the maximum of the forward or backward movement of the right in question Authorization scope. According to another additional feature of the method, the restrictions predefined by the operator include a maximum authorized cumulative duration for forward or backward movement, ie, the maximum of all forward or backward movements of the system in question. The cumulative amount of authorization. According to another additional feature of the method, the operator sets a time period during which the user can request management of the content operation time. Thus, a request to move or suspend the validity period of the right will be considered as long as it is received by the terminal during the period set by the operator. According to another feature of the method, the restrictions predefined by the operator include an access expiration date and a lower deadline, before which the content protected by the entitlement is not authorized. According to the feature of the present invention, the management of the content operation time is performed locally in a user terminal. BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the invention will be apparent from the following description, taken in conjunction with the appended claims. Figure 1 is a summary of the main steps of the method according to the invention. 200937247 Detailed Description of the Preferred Embodiments of the Application Method 5 ❹ 10 15 Ref 20 The present invention will be described in an application architecture through an exemplary embodiment in which a telecommunications operator will service and mix Content is provided to the user, and each user is provided with a receiving terminal equipped with a secure processor. Such content may be audiovisual programs or materials protected by a conditional access control system (CAs) or a digital rights management (DRM) license. Protected content can be accessed and used by users based on a number of possible services: - Live TV service: Content is instantly delivered to the broadcast network (satellite, thin, terrestrial radio, broadcast/multicast mode IP··.) A large number of users broadcast. - VOD service: According to the user's own request, the content is sent to a specific user by a distribution network (typically - Ip network in multicast mode) enabling the user to be personally addressed. _PVR service: (broadcast or VOD) content is recorded by the ad hoc function provided by the user of the receiving terminal or by the network operator; the user can then access the content by reviewing the record. Let us recall that in the context of DRM, and more specifically, in the context of OMADRM V2, time management of access terms and rights is limited to control of time-effective criteria for access rights. This criterion may be provided in the form of a duration by specifying a "cumulative" type limit for the cumulative duration of the content of the DRM license-protected content that is actually consumed, or for the duration of the sliding period for which the rights are valid, otherwise A dateline type restriction specifying a time interval defined by at least one start date and at least one end date is provided in a time interval. A slip validity period of the license is specified as a period in which The date on which the user first operates the content begins and ends no later than the expiration date of the license. The latter therefore has a 5-effect in a time interval of a certain duration but has a predetermined start date. The method can be applied to the rights defined by the DRM license, and the operator associates the following information with the right: - the validity period of the DRM license determined by a start date T1 and an end date T2, 10 - the ruler, the ruler and the 1 Chiyou, the parameter values of these parameters indicate whether the forward, backward or stop of the validity period is affected by Authorization, - a parameter indicating the maximum number of authorization advances, the maximum number of authorizations to move backwards, and a maximum number of authorization suspensions, and nb_Max_S, 15 - respectively indicating the unit size of the authorization advance and the authorized backward movement ^a_Max_U3Lr_Max_U - A parameter indicating the cumulative magnitude of the authorization advance and the authorized backward movement, respectively, is that according to the type 20 operation (moving or pausing) authorized by the method selected by the user, the value is The selected operation is based on the reduction of 0. In addition, the operator associates a full expiration date TP and/or a lower validity wearing period T0 with the DRM license. 200937247 During operation, installed at the user terminal A DRM agent onboard manages the communication interface with the user, thereby enabling the communication interface to provide the type of operation (moving or pausing) that the user wants to apply to the access that he is the owner of. 10 15 Lu 20 The communication interface can be displayed by a message displayed on one of the windows of the user terminal screen, otherwise it is composed of a voice message played by the terminal. A summary of the main steps of the method according to the invention. In step 2, the user provides a description of the desired process to the DRM agent via the communication interface. After receiving the description in step 4, the DRM agent That is, verifying whether the right in the discussion is still valid and whether it is temporarily restricted' ie whether its validity is time-limited. In step 6, if the right in question is outdated or if it is temporarily restricted, The DRM agent transmits an error message to the user through the communication interface. In the eighth step, the rights in the right-hand theory are not obsolete and temporarily restricted, and the DRM agent uses the communication interface as the user. Presenting the process authorized by the rights in question. In the - the alternative implementation of the method 'when the validity period of the right is defined by the start date T1 and the end date T2, the processing of the rights authorization in question It is to shift the period T1 to the same time displacement of the date T1 (the first step), and to move the Ti to the same time-time displacement (step 12), otherwise temporarily stop the content for an uncertain period. (Step 14). In step 16, the right user chooses to move the validity period (the first time the DRM agent verifies the parameter (whether or not it is true (t called, and whether parameter 9 200937247 is greater than or equal to one. In step 17) If the conditions are not true, the drm agent transmits an error message to the user via the communication interface. In step 18, if the conditions are true, the user transmits the desired 5 forward range to The DRM agent. In step 20, the DRM agent compares the amplitude input with a user-predefined parameter indicating a unit amplitude and a cumulative amplitude of the forward shift, respectively, a a a C. 10 More specifically, the DRM agent verifies whether : --amplitude a Max U, (Cl) --amplitude a_Max_C, (C2) -Max(data_current, TO) T1 -amplitude (C3) 15 In step 21, if at least (C) or (C2) If a condition is not true, the DRM agent transmits an error message to the user via the communication interface. 'If the user selects a new expiration date for the license, the DRM agent uses the data__ When T1丨(4) replaces the amplitude data to perform In addition, if the right condition (3) is not true, then the DRM agent requests the user to accept the _ interception of the right and the remaining validity period, or its - reduced movement range. In step 22, the agent updates the license as follows Describe the validity of this right = τ ΐ · amplitude Τ 2 = Τ 2 · amplitude 20 200937247 nb_Max_A = nb_Max_A-1 a - Max_C : = a_Max_C - amplitude in step 23, if the user chooses to move the validity period (step 12), Whether the DRM agent verifies that the parameter ^0 is equal to "true,,, and whether the parameter j 5 is greater than or equal to one. In step 24, if the conditions are not true, the dRm agent transmits an error message through the communication interface. To the user.
10 1510 15
在第26步，若該等條件屬實，則該使用者將所期望的 後移幅度傳送至該DRM代理，以及在第28步，該DRM代理 比較該幅度輸入與由經營者預定義的分別指示後移單位幅 度和累计幅度的參。 (C4) (C5) 更確切地說，該DRM代理驗證是否： —幅度 r_Max_U， —幅度 r_Max—C， --T2+幅度 Τρ， 在第29步，若條件(C4)或(C5)中的至少一個條件不屬 實’則該DRM代理將一錯誤訊息藉由該通訊介面傳送至使 用者。 若使用者對該許可證的該有效期選擇一個新的終止日 2〇期’則該DRM代理透過用| data—selected-ΤΙ |資料取代該 幅度資料來執行以上驗證。 若條件(6)不屬實，則該DRM代理請求使用者接受該權 利之剩餘有效期的一新截取，或者其一減小的移動幅度。 在第30步，該代理如下更新許可證中描述該權利有效 11 200937247 期的資料： Τ1=τΐ +幅度 Τ2=Τ2+幅度 nb_Max_R=nb J4ax_R-1 5 LMax—C : =rJMax_C-幅度 若使用者選擇暫停該有效期（第14步），則該DRM代理 驗證（第32步）參數s o尺是否等於“真，，，以及參數 是否大於或等於1。 在第34步’若使用者所期望的處理未受授權，或若該 © 10使用者已多次（等於最大授權數目）施加該處理，則該drm 代理將指示該所期望的處理未受授權或不再受授權的一訊 息傳送至該使用者。 在第36步，若暫停未受授權，則該DRM代理如下更新 許可證中描述該權利有效期的資料： 15 剩餘有效期（Remaining_duration_of_Validity)=T2- max(Tl, current date)In step 26, if the conditions are true, the user transmits the desired back shift amplitude to the DRM agent, and in step 28, the DRM agent compares the amplitude input with a separate indication predefined by the operator. The parameters of the unit amplitude and the cumulative amplitude are shifted back. (C4) (C5) More precisely, the DRM agent verifies whether: - amplitude r_Max_U, - amplitude r_Max - C, -T2 amplitude Τ ρ, in step 29, if at least (C4) or (C5) If a condition is not true, then the DRM agent sends an error message to the user via the communication interface. If the user selects a new termination date for the validity period of the license, the DRM agent performs the above verification by replacing the amplitude data with the |data-selected-ΤΙ| If condition (6) is not true, the DRM agent requests the user to accept a new intercept of the remaining validity period of the right, or a reduced range of movement. In step 30, the agent updates the information in the license as described in the valid 11 200937247 period: Τ1=τΐ + amplitude Τ2=Τ2+ amplitude nb_Max_R=nb J4ax_R-1 5 LMax—C : =rJMax_C-amplitude if the user chooses To suspend the validity period (step 14), then the DRM agent verifies (step 32) whether the parameter so rule is equal to "true,,, and whether the parameter is greater than or equal to 1. In step 34, if the user desires the processing not Authorized, or if the © 10 user has applied the process multiple times (equal to the maximum number of grants), the drm agent will indicate to the user that the desired process is not authorized or is no longer authorized. In step 36, if the suspension is not authorized, the DRM agent updates the information describing the validity period of the license as follows: 15 Remaining validity period (Remaining_duration_of_Validity)=T2-max(Tl, current date)
Tl =零 ❹ nb_Max_S=nb_Max_S-1 在本方法的另一備選實施中，當該權利有效期僅由一 有效起始日期T1定義時，管理該内容操作時間在於於由該 經營者預定義的限制範圍内移動該有效起始曰期T1，以及 當該權利有效期僅由—有效終止日期T2定義時，管理該内 容操作時間在於於由該經營者預定義的限制範圍内移動該 12 200937247 有效終止日期T2。 值得注意的是，不管由該使用者所選定的處理，例如 一剩餘數目的授權内容操作時間、實際累計内容消耗時間 之許可證或存取權的其他限制用其最後各自的目前值來保持。 5 【圖式簡單說明】 第1圖是根據本發明之方法的主要步驟的一概要說明。 【主要元件符號說明】 2〜36…流程步驟Tl = zero ❹ nb_Max_S = nb_Max_S-1 In another alternative implementation of the method, when the validity period is defined only by a valid start date T1, managing the content operation time lies in a limit predefined by the operator The effective start period T1 is moved within the range, and when the right validity period is defined only by the effective expiration date T2, managing the content operation time lies in moving the 12 within the predefined range predefined by the operator. T2. It is worth noting that regardless of the processing selected by the user, such as a remaining number of authorized content operation times, licenses for actual accumulated content consumption time, or other restrictions on access rights are maintained with their last respective current values. 5 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic illustration of the main steps of the method according to the present invention. [Main component symbol description] 2~36... Process steps