TW200412104A - Method for protecting copyright of multimedia contents - Google Patents

Method for protecting copyright of multimedia contents Download PDF

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Publication number
TW200412104A
TW200412104A TW091138018A TW91138018A TW200412104A TW 200412104 A TW200412104 A TW 200412104A TW 091138018 A TW091138018 A TW 091138018A TW 91138018 A TW91138018 A TW 91138018A TW 200412104 A TW200412104 A TW 200412104A
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TW
Taiwan
Prior art keywords
content
replay
communication terminal
mobile communication
copyrighted
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TW091138018A
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Chinese (zh)
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TWI233738B (en
Inventor
Hee-Won Park
Sang-Ho Chae
In-Seong Hwang
Keun-Hee Shin
Yo-Sub Kim
Hee Sull Won
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Sk Telecom Co Ltd
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Publication of TW200412104A publication Critical patent/TW200412104A/en
Application granted granted Critical
Publication of TWI233738B publication Critical patent/TWI233738B/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
    • H04N21/6175—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving transmission via Internet
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
    • G11B20/0084—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific time or date
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/00855—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a step of exchanging information with a remote server
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/254—Management at additional data server, e.g. shopping server, rights management server
    • H04N21/2541—Rights Management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44204—Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4627—Rights management associated to the content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2137—Time limited access, e.g. to a computer or data

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Technology Law (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Storage Device Security (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

In a wireless network, a copyrighted content, which is transmitted from a VOD server, needs to be protected from unrestricted replaying or copying. Data of the content and a detailed information including a limit on replaying times are transferred to the mobile communications terminal in response to the user's selection of the content. The mobile communications terminal generates a replaying count value after first playing thereon. In response to a user's request for replaying the downloaded content, the mobile communications terminal compares the replaying count value with the limit on the replaying times and determines whether the content can be replayed or not. Through this operation, replaying of the content can be restricted.

Description

200412104 玖、發明說明 (發明說明應敘明：發明所屬之技術領域、先前技術、内容、實施方式及圖式簡單說明） t發明戶斤屬之技術領域3 發明領域 本發明係有關於無線網際網路服務，且特別是更有關 5 於一種方法用於藉由限制透過WAP賦能無線網路被傳輸之 數位内容的複製或重播來保護該數位内容之著作權。 L先前技術3 發明背景 多媒體儲存與傳輸技術之進步允許數位格式之資訊持 10 續增加量的儲存與傳輸。同時，數位媒體壓縮與無線傳輸 速度之進步為内容生產者創立新的分配頻道與無線通訊網 路。此趨勢將採取無線通訊引發無數市場潛力之益處。無 線通訊在如行動電話或無線PDA與網際網路伺服器之無線 裝置間被實施。 15 行動電話或無線通訊終端機能用無線應用通訊協定具 有對網際網路之存取。為了具有對網際網路之存取，有很 多元件必須在無線裝置上實作一 WAP用戶。這些文件包括 WAP瀏覽器、無線組合語言（WML)描述語言解譯器（scdpt engine)與一無線通訊協定堆疊（Wireless Protocol Stack)。 20 儲存在無線裝置中之應用程式與WAP用戶互動以實施各種 通訊應用及重播該數位内容。 但如在相關技藝中非常習知者，數位内容之很大誘惑 為不受限制之複製的可能。要保護該數位内容之著作權而 同時束缚網際網路之無限分佈可能性以及避免引發數位内 6 200412104 玖、發明說明 容著作權保護相關的高成本是不可避免的。為此目的，其 有必要收集有關該數位内容是否透過違反著作權被購買、 使用或取得。所以有對分配的數位内容之有效管理技術的 需求。 5 【明内】 發明概要 所以本發明之一目標為要提供一種方法，用於藉由在 該有著作權之内容被要求在一行動通訊終端機上重播時防 止該有著作權之内容的不受限制之重播。 1〇 依據本發明之一較佳實施例中，其提供一種方法，用 於保護透過一無線網路由一 V〇D伺服器至一行動通訊終端 機被下載之内容，該方法包括之步驟為：在回應於透過該 無線網路使用者對有著作權之内容的要求下以該有著作權 之内谷之詳細資訊與資料提供給行動通訊終端機，其中該 15詳細資訊包括對該有著作權之内容的重播時間之限制；當 一使用者要求重播該下載内容時比較一重播計數值與對重 播時間之限制；以及在該行動通訊終端機之顯示窗上顯示 一預設訊息並在該重播計數值若超過對重播時間之限制時 終止該有著作權之内容的重播作業，或在該重播計數值若 20不超過對重播時間之限制時進行重播該内容。 依據本發明之一較佳實施例中，其提供一種方法，用 於保護透過一無線網路由一 V0D伺服器至一行動通訊終端 機被下載之内容，該方法包括之步驟為：在回應於透過該 無線網路使用者對有著作權之内容的要求下以該有著作權 7 200412104 玖、發明說明 之内容之詳細資訊與資料提供給行動通訊終端機，其中該 詳細資訊包括該有著作權之内容的有效日期；當一使用者 要求重播該下載内容時比較一重播計數值與對該有效曰期 ;以及在該行動通訊終端機之顯示窗上顯示一預設訊息並 5 在該有效日期若超過時終止該有著作權之内容的重播作業 ，或在該有效日期若不超過時進行重播該内容。 圖式簡單說明 本發明之上面與其他目標與特點將由下列較佳實施例 配合相關附圖被描述而變得明白的，其中： 10 第1圖顯示無線網際網路服務系統的方塊圖；以及 第2圖為一流程圖，顯示依照本發明之較佳實施例用 於限制下載内容重播之作業。 【實施方式3 較佳實施例之詳細說明 15 現在本發明之較佳實施例將參照附圖詳細地被描述。 第1圖顯示依照本發明較佳實施例之無線網際網路服 務系統的方塊圖。該系統包括一行動通訊終端機100、一 無線網路150與一 VOD伺服器200。該行動通訊終端機100 透過該無線網路150被連接至該VOD伺服器200。200412104 发明 Description of the invention (the description of the invention should state: the technical field to which the invention belongs, the prior art, the content, the embodiments, and the drawings are simply explained) Services, and more specifically 5 methods for protecting the copyright of digital content by limiting the copying or replaying of digital content that is transmitted over a WAP-enabled wireless network. L Prior Art 3 Background of the Invention Advances in multimedia storage and transmission technology allow for the continuous storage and transmission of information in digital formats. At the same time, advances in digital media compression and wireless transmission speeds have created new distribution channels and wireless communication networks for content producers. This trend will take advantage of the myriad market potential of wireless communications. Wireless communication is implemented between a wireless device such as a mobile phone or wireless PDA and an Internet server. 15 The mobile phone or wireless communication terminal can use the wireless application protocol to have access to the Internet. To have access to the Internet, many components must implement a WAP user on a wireless device. These files include a WAP browser, a WML description language interpreter (scdpt engine), and a Wireless Protocol Stack. 20 The application stored on the wireless device interacts with the WAP user to implement various communication applications and replay the digital content. But if you are very familiar with the relevant art, the great temptation of digital content is the possibility of unlimited copying. To protect the copyright of the digital content while constraining the possibility of unlimited distribution on the Internet, and to avoid triggering the digital 6 200412104 发明, invention description The high cost associated with copyright protection is inevitable. To this end, it is necessary to collect information about whether the digital content was purchased, used, or obtained through a copyright violation. Therefore, there is a need for effective management techniques for distributed digital content. 5 [Akimoto] Summary of the Invention One object of the present invention is to provide a method for preventing unrestricted copyrighted content when the copyrighted content is required to be replayed on a mobile communication terminal. Replay. 10 According to a preferred embodiment of the present invention, it provides a method for protecting content downloaded from a VOD server to a mobile communication terminal via a wireless network. The method includes the following steps: In response to the user ’s request for copyrighted content through the wireless network, provide detailed information and data of the copyrighted inner valley to the mobile communication terminal, where the 15 detailed information includes information on the copyrighted content. Replay time limitation; when a user requests replay of the downloaded content, comparing a replay count value with a restriction on the replay time; and displaying a preset message on the display window of the mobile communication terminal and displaying the replay count value if When the limit of the replay time is exceeded, the replay operation of the copyrighted content is terminated, or the content is replayed when the replay count value does not exceed the limit of the replay time. According to a preferred embodiment of the present invention, it provides a method for protecting content downloaded from a VOD server to a mobile communication terminal via a wireless network. The method includes the following steps: The wireless network user requested the copyrighted content to provide the mobile communication terminal with the detailed information and data of the content of the copyright 7 200412104 玖, the description of the invention, where the detailed information includes the validity of the copyrighted content Date; when a user requests to replay the downloaded content, compare a replay count value with the effective date; and display a preset message on the display window of the mobile communication terminal and 5 terminate if the effective date is exceeded Replay of the copyrighted content, or replay the content if the effective date does not exceed. The drawings briefly explain the above and other objects and features of the present invention and will become apparent from the following description of preferred embodiments in conjunction with the accompanying drawings, wherein: FIG. 1 shows a block diagram of a wireless Internet service system; and FIG. 2 is a flowchart showing a job for restricting replay of downloaded content according to a preferred embodiment of the present invention. [Embodiment 3 detailed description of preferred embodiment 15] Now, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows a block diagram of a wireless Internet service system according to a preferred embodiment of the present invention. The system includes a mobile communication terminal 100, a wireless network 150, and a VOD server 200. The mobile communication terminal 100 is connected to the VOD server 200 through the wireless network 150.

20 該行動通訊終端機100包括一 WAP瀏覽器120、一 VOD 播放器140與一記憶體160，且該VOD伺服器200包括一 WAP伺服器220及一 VOD伺服器主系統240。 該WAP伺服器220儲存VOD内容選單頁。當該使用者 藉由使用行動通訊終端機100運用VOD服務時，該行動通 8 200412104 玖、發明說明 訊終端機100之WAP瀏覽器120被連接至該WAP伺服器220 ;且一 VOD内容選單頁由該WAP伺服器220被傳輸並在行 動通訊終端機100之一顯示窗（未晝出）上被顯示，其中該頁 具有一 WAP選單用於促成該使用者選擇所要之内容。 5 當該使用者在WAP伺服器220上提供之選單頁上選擇 特定的内容，WAP伺服器220以WML稿格式傳輸被選擇之 内容上的資訊。該被傳輸之資訊包括在行動通訊終端機 100與VOD伺服器主系統240間建立連接及下載所選擇之内 容的一般資訊，如一内容提供者ID、一内容ID與一 MUX 10 選項；及有關播放該下載内容的詳細資訊，如該内容名稱 、著作權所有人、與重播内容之時間限制或有效曰期。 為了多媒體内容之串流與下載，一高速頻道有必要被 分配，其原因為該多媒體内容之量一般是比較大的。依據 由WAP伺服器220被傳送之MUX選項值，一高速頻道可在 15 該行動通訊終端機100與一基地台（BS)間被分配。 在該高速頻道於行動通訊終端機1 〇〇與該基地台（BS) 間被建立後，WAP瀏覽器120啟動該行動通訊終端機100内 被安裝之VOD播放器140。該VOD播放器140藉由使用該所 選擇之内容的一般資訊要求該行動通訊終端機100與VOD 20 伺服器主系統240間之連接。在VOD伺服器200收到VOD伺 服器主系統240與VOD播放器間之連接後，該使用者使用 一使用者命令來開始該内容之下載與串流。當該VOD伺服 器主系統240收到該開始命令時，音頻與視訊資料開始被 下載及播放。 9 200412104 玖、發明說明 然後，當該使用者使用一使用者命令來停止該内容之 下載與播放時，該VOD伺服器主系統240收到該停止命令 且該VOD播放器140被停止。不過，由VOD伺服器主系統 240被下載之内容被儲存於該行動通訊終端機100之記憶體 5 160。若對重播該内容無限制，該使用者可重播該内容。 就有著作權之内容而言，其有需要限制其重播以保護該内 容之著作權。 參照第2圖，當該有著作權之内容被一使用者要求於 該行動通訊終端機1〇〇重播時，用於保護一内容之著作權的 10 方法被顯示。 為了運用一網際網路VOD服務，該行動通訊終端機 100被連接至網際網路（S301)。在回應於該VOD服務之使 用者的選擇下，該WAP伺服器220提供一選單頁給該行動 通訊終端機100之使用者（S302)。當該使用者在WAP選單 15 選擇一有著作權之内容（S303)時，該WAP伺服器220以一 WML稿之形式傳輸該所選擇之内容上的一般資訊與詳細 資訊（S304)。然後該内容被儲存於該行動通訊終端機100 之記憶體内。在構建該行動通訊終端機100與該VOD伺服 器主系統240間之連接後，該所選擇之内容被下載及播放 20 (S305)。 在VOD播放器140上之内容的第一次播放後，該内容 之重播計數值被產生並被儲存在行動通訊終端機100之記 憶體160内（S306)。該重播計數值在該第一次播放後為1。 且當使用者要求重播該下載内容（S307)時，儲存於該記憶 10 200412104 玖、發明說明 體内之重播計數值與該重播時間之限制被比較（S308)。若 該重播計數值超過該重播時間限制，該内容不再被重播或 被迫由行動通訊終端機100之記憶體160被刪除。且行動通 訊終端機100停止該内容之重播作業並顯示一預設訊息表 5示該内容再也不能於該顯示窗被重播（S309)。若該重播計 數值不超過該重播時間限制，該下載内容被重播（S31〇)。 在5亥内谷之重播後，該重播計數值被增加1且被儲存在行 動通訊終端機100之記憶體160内（S3〇6)。 若該使用者要求該下載内容之第一次流動與下載後重 10播之，該使用者可直接存取一重播功能（S307)。 在本發明之另一實施例中，該有效日期被用以決定該 内容可回應於該使用者對重播該内容的要求下被重播。當 違使用者要求重播該下載内容時，行動通訊終端機1〇〇所 提供之目前時間就該内容與該有效日期被比較。若該有效 15日期已過’對内容重播之要求被拒絕且該行動通訊終端機 100在该顯示窗上顯示一預設訊息。 若該下載内容被一著作權保護，該内容之無限制的重 播侵害其著作權。依照本發明，該内容之著作權藉由限制 重播該内容超過一預設次數而可有效地被保護。 20 雖然本發明已針對較佳實施例被顯示及描述，其將被 热習本技藝者了解到各種變化與修改可不偏離本發明下列 申請專利範圍所定義之精神與領域地被做成。 【囷式簡單說明】 第1圖顯示無線網際網路服務系統的方塊圖；以及 11 200412104 玖、發明說明 第2圖為一流程圖，顯示依照本發明之較佳實施例用 於限制下載内容重播之作業。 【圖式之主要^70件代表符號表】 100···行動通訊終端機 S302…步驟 120··· WAP瀏覽器 S303···步驟 140··· VOD播放器 S304…步驟 150···無線網路 S305···步驟 160···記憶體 S306···步驟 200···ν〇ϋ伺服器 S307···步驟 220-"WAP伺月艮器 S308·.·步驟 240…VOD伺服器至系統 S309···步驟 S301…步驟 S310…步驟 1220 The mobile communication terminal 100 includes a WAP browser 120, a VOD player 140 and a memory 160, and the VOD server 200 includes a WAP server 220 and a VOD server main system 240. The WAP server 220 stores VOD content menu pages. When the user utilizes the VOD service by using the mobile communication terminal 100, the mobile communication terminal 8 200412104 玖, the WAP browser 120 of the invention terminal 100 is connected to the WAP server 220; and a VOD content menu page The WAP server 220 is transmitted and displayed on a display window (not shown) of the mobile communication terminal 100. The page has a WAP menu for facilitating the user to select the desired content. 5 When the user selects specific content on a menu page provided on the WAP server 220, the WAP server 220 transmits the information on the selected content in a WML draft format. The transmitted information includes general information for establishing a connection between the mobile communication terminal 100 and the VOD server main system 240 and downloading selected content, such as a content provider ID, a content ID and a MUX 10 option; and related playback Details of the downloaded content, such as the content name, copyright owner, and time limit or effective date of replayed content. In order to stream and download multimedia content, a high-speed channel must be allocated, because the amount of multimedia content is generally relatively large. According to the MUX option value transmitted by the WAP server 220, a high-speed channel can be allocated between the mobile communication terminal 100 and a base station (BS). After the high-speed channel is established between the mobile communication terminal 100 and the base station (BS), the WAP browser 120 activates the VOD player 140 installed in the mobile communication terminal 100. The VOD player 140 requests the connection between the mobile communication terminal 100 and the VOD 20 server main system 240 by using the general information of the selected content. After the VOD server 200 receives the connection between the VOD server main system 240 and the VOD player, the user uses a user command to start downloading and streaming of the content. When the VOD server main system 240 receives the start command, audio and video data starts to be downloaded and played. 9 200412104 发明. Description of the Invention Then, when the user uses a user command to stop downloading and playing of the content, the VOD server main system 240 receives the stop command and the VOD player 140 is stopped. However, the content downloaded by the VOD server main system 240 is stored in the memory 5 160 of the mobile communication terminal 100. If there is no restriction on replaying the content, the user can replay the content. As far as copyrighted content is concerned, it is necessary to restrict its replay to protect the copyright of the content. Referring to FIG. 2, when the copyrighted content is requested by a user to be replayed on the mobile communication terminal 100, 10 methods for protecting the copyright of a content are displayed. In order to use an Internet VOD service, the mobile communication terminal 100 is connected to the Internet (S301). In response to the user's selection of the VOD service, the WAP server 220 provides a menu page to the user of the mobile communication terminal 100 (S302). When the user selects a copyrighted content in the WAP menu 15 (S303), the WAP server 220 transmits general information and detailed information on the selected content in the form of a WML draft (S304). The content is then stored in the memory of the mobile communication terminal 100. After the connection between the mobile communication terminal 100 and the VOD server main system 240 is established, the selected content is downloaded and played 20 (S305). After the content on the VOD player 140 is played for the first time, the replay count value of the content is generated and stored in the memory 160 of the mobile communication terminal 100 (S306). The replay count value is 1 after the first play. And when the user requests to replay the downloaded content (S307), the memory 10 200412104 玖, description of the invention The replay count value in the body is compared with the limit of the replay time (S308). If the replay count exceeds the replay time limit, the content is no longer replayed or forced to be deleted by the memory 160 of the mobile communication terminal 100. And the mobile communication terminal 100 stops the replay operation of the content and displays a preset message table 5 to indicate that the content can no longer be replayed in the display window (S309). If the replay count value does not exceed the replay time limit, the downloaded content is replayed (S31). After the replay of the valley within 5 miles, the replay count value is incremented by 1 and stored in the memory 160 of the mobile communication terminal 100 (S306). If the user requests the first flow of the downloaded content and the replay after the download, the user can directly access a replay function (S307). In another embodiment of the invention, the expiration date is used to determine that the content can be replayed in response to a user request for replaying the content. When the downloaded content is replayed in violation of the user's request, the current time provided by the mobile communication terminal 100 is compared with the effective date regarding the content. If the valid 15 days have passed 'the request for content replay is rejected and the mobile communication terminal 100 displays a preset message on the display window. If the downloaded content is protected by a copyright, the unlimited replay of the content violates its copyright. According to the present invention, the copyright of the content can be effectively protected by limiting the replay of the content more than a preset number of times. 20 Although the present invention has been shown and described for the preferred embodiment, it will be appreciated by those skilled in the art that various changes and modifications can be made without departing from the spirit and field of the invention as defined in the following patent application scope. [Brief description of the method] FIG. 1 shows a block diagram of a wireless Internet service system; and 11 200412104 玖. Description of the invention FIG. 2 is a flowchart showing a method for restricting replay of downloaded content according to a preferred embodiment of the present invention Homework. [The main ^ 70 representative symbol table of the figure] 100 ... Mobile communication terminal S302 ... Step 120 ... WAP browser S303 ... Step 140 ... VOD player S304 ... Step 150 ... Wireless Network S305 ... Step 160 ... Memory S306 ... Step 200 ... ν〇ϋ Server S307 ... Step 220- " WAP Server S308 ... Step 240 ... VOD Servo Device to system S309 ... Step S301 ... Step S310 ... Step 12

Claims (1)

200412104 拾、申請專利範圍 1 · 一種方法，用於保護透過一無線網路由一 v〇D伺服器 至一行動通訊終端機被下載之内容，該方法包括之步 驟為： (a) 在回應於透過該無線網路使用者對有著作權之 5 内容的要求下以該有著作權之内容之詳細資訊與資料 提供給行動通訊終端機，其中該詳細資訊包括對該有 著作權之内容的重播時間之限制； (b) 當一使用者要求重播該下載内容時比較一重播 計數值與對重播時間之限制；以及 10 (c)在該行動通訊終端機之顯示窗上顯示一預設訊 息並在該重播計數值若超過對重播時間之限制時終止 该有著作權之内容的重播作業，或在該重播計數值若 不超過對重播時間之限制時進行重播該内容。 2·如申請專利範圍第1項所述之方法，其中該内容為一 VOD内容。 3.如申請專利範，圍第1項所述之方法，其中在重播該内 容後，該内容之重播計數值被增加1。 4· 種方法，用於保§蒦透過一無線網路由一 VOD4司服器 至一行動通訊終端機被下載之内容，該方法包括之步 20 驟為： (a)在回應於透過該無線網路使用者對有著作權之 内容的要求下以該有著作權之内容之詳細資訊與資料 提供給行動通訊終端機，其中該詳細資訊包括該有著 作權之内容的有效曰期； 13 200412104 拾、申請專利箪ΐ圍 ⑻當-使用者要求重播該下載内容時比較一重播 計數值與對該有效日期；以及 ⑷在該行動通訊终端機之顯示窗上顯示-預設訊 息並在該有效曰期若超過時終止該有著作權之内容的 重播作業，或在該有效日期 4右不超過時進行重播該内 容0 方法，其中該内容為一 如申請專利範圍第4項所述之 VOD内容。 14200412104 Patent application scope 1 · A method for protecting the content downloaded from a vOD server to a mobile communication terminal via a wireless network. The method includes the following steps: (a) in response to The wireless network user provides the mobile communication terminal with detailed information and data of the copyrighted content under the request of the copyrighted 5 content, wherein the detailed information includes a limitation on the replay time of the copyrighted content; (b) comparing a replay count value with a restriction on the replay time when a user requests replay of the downloaded content; and 10 (c) displaying a preset message on the display window of the mobile communication terminal and displaying the replay count If the value exceeds the limit on the replay time, the replay operation of the copyrighted content is terminated, or if the replay count value does not exceed the limit on the replay time, the content is replayed. 2. The method according to item 1 of the scope of patent application, wherein the content is a VOD content. 3. The method as described in claim 1, wherein after the content is replayed, the replay count value of the content is increased by one. 4. A method for guaranteeing the content downloaded from a VOD4 server to a mobile communication terminal through a wireless network. The method includes step 20: (a) in response to the wireless network The user requested the copyrighted content to provide the mobile communication terminal with detailed information and data of the copyrighted content, where the detailed information includes the effective date of the copyrighted content; 13 200412104 ΐ Wai⑻ When the user requests to replay the downloaded content, compare a replay count value with the effective date; and ⑷ display on the display window of the mobile communication terminal-a preset message and if the effective date is exceeded Terminate the replay of the copyrighted content, or replay the content 0 when the effective date 4 is not more than right, where the content is the VOD content as described in item 4 of the scope of patent application. 14
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