| Patent application number | Description | Published |
|---|
| 20090075584 | MOBILE BROADCASTING SYSTEM AND METHOD FOR TRANSMITTING AND RECEIVING BROADCAST SERVICE THEREFOR - A method for receiving a broadcast service through a plurality of terminals in a mobile broadcasting system supporting the broadcast service is provided. The method includes sending a registration request message for requesting registration of each of a plurality of terminals from a server associated with a broadcast service, receiving a registration response message from the server in response to each registration request message, sending a service request message to the server through one terminal of the plurality of terminals to request that the broadcast service be provided to the remaining terminals, and receiving, by the remaining terminals, a service response message from the server and the broadcast service. | 03-19-2009 |
| 20090080664 | METHOD OF STORING BROADCAST CONTENTS IN MOBILE BROADCAST SERVICE TERMINAL - Disclosed is a method of recording and storing a broadcast content received for mobile broadcast services in a transmitting-end level. A broadcast receiving terminal includes a type of the key profile in the header of the recorded file for the particular broadcast content, the CIEK which is used in encrypting the broadcast content and encrypted with the second layer encryption key, and the acquisition information on the second layer encryption key. The acquisition information on the second layer encryption key is included in a corresponding field of the header according to the type of the used profile. As in the SRTP and IPSec, a recorded file format in the transmitting-end level recording is the PDCF. Information associated with the encryption of the encrypted broadcast content is stored in the OMA DRM common header box (ohdr box) of the PDCF recorded file. | 03-26-2009 |
| 20090210704 | SYSTEM AND METHOD FOR WITHDRAWING RIGHTS OBJECT OF THE DIGITAL CONTENTS - A system in which a source device can withdraw a Rights Object (RO) that a source device requested a target device to move through a Rights Issuer (RI) and operation method thereof are provided. The method includes transmitting a rights object withdrawal request message to a rights issuing server by a device, transmitting a rights object withdrawal response message to the device by the rights issuing server in response to the rights object withdrawal request message, and withdrawing and installing a corresponding rights object when receiving the rights object withdrawal response message by the device. | 08-20-2009 |
| 20090210947 | LICENSE CONSIGNMENT METHOD AND SYSTEM FOR PORTABLE DEVICE - A license consignment method and system for a portable device playing a right-protected content with a license is provided for improving utilization reliability and manageability of a license by enabling a license server to manage the license consigned by the portable device. The method includes selecting a license to be consigned to a license server, transmitting the license server license information corresponding to the selected license, and transmitting, when the license is not downloaded in a certain time, a download trigger message to the portable device. | 08-20-2009 |
| 20090247145 | METHOD AND APPARATUS FOR SOFTWARE UPDATE OF TERMINALS IN A MOBILE COMMUNICATION SYSTEM - A method of updating software of terminals in a mobile broadcast system is provided. The method includes creating an update command for terminals of a particular model, the update command including update information; and broadcasting the created update command. The update information includes software version information and at least one of terminal manufacturer information and terminal model information. Further, the method may further include, before broadcasting the created update command, forcibly requiring terminals subscribe to an update service; and creating and broadcasting an update file for terminals of the particular model from among the forcibly subscribed terminals. The software of the terminals may be firmware. | 10-01-2009 |
| 20090252324 | METHOD AND APPARATUS FOR PROVIDING BROADCAST SERVICE USING ENCRYPTION KEY IN A COMMUNICATION SYSTEM - A method and apparatus for providing a broadcast service in a communication system is provided. The method includes creating a seed key pair including a first key and a second key, transmitting the seed key pair to a terminal to which the broadcast service is to be provided, creating a certain number of encryption keys using the seed key pair, the certain number corresponding to a lifetime of the seed key pair, encrypting broadcast service data for the lifetime using the encryption keys, and broadcasting the encrypted broadcast service data. | 10-08-2009 |
| 20090254983 | METHOD AND APPARATUS FOR MANAGING TOKENS FOR DIGITAL RIGHTS MANAGEMENT - A method and apparatus for managing tokens for Digital Rights Management (DRM) in a terminal are provided. In the method, at least one token is acquired from a Rights Issuer (RI), and the token is moved to a Secure Removable Media (SRM) through a token move request message. The token can be shared by several terminals. | 10-08-2009 |
| 20100128878 | SYSTEM AND METHOD FOR PROVIDING DIGITAL CONTENTS SERVICE - The present invention relates to a method and system for providing a digital content service that provides packaging content consisting of digital rights management (DRM) content and advertisement content, and is able to use the DRM content for free by watching or listening to the advertisement content, including: generating packaging content consisting of pilot content and target content, which has been encrypted using an encryption key of the pilot content, and providing the packaging content to a portable terminal; and obtaining a decryption key for the target content through playing the pilot content of the packaging content, and playing the target content by the decryption key, by the portable terminal. | 05-27-2010 |
| 20100169172 | METHOD AND APPARATUS FOR DIGITAL BROADCASTING SERVICE - A method and apparatus for a digital broadcasting service may allow direct and real-time control of a digital broadcasting receiver. A service providing server inserts a content control access criteria descriptor into a transport stream and transmits content and the content control access criteria descriptor to the receiver through the transport stream. The receiver receives the transport stream and processes the content according to the content control access criteria descriptor, which can contain lock control information and coupon provision information. The lock control information indicates whether a control function of the receiver is locked or unlocked for specific content. The coupon provision information indicates whether a coupon available for the purchase of pay content is granted depending on execution of specific content. | 07-01-2010 |
| 20100175138 | SYSTEM AND METHOD FOR PROVIDING CONTENT FOR DIGITAL RIGHTS MANAGEMENT - A method of providing DRM content, including transmitting, by a content issuer, when a request for a specific main content of a communication terminal is input, a DRM content including the main content and a preset sub-content corresponding to the main content to the communication terminal; transmitting, by a rights issuer, a rights object having constraint condition information for securing reproduction of the sub-content to the communication terminal; and reproducing, by the communication terminal, when the DRM content and the rights object are received, the sub-content by analyzing the rights object and reproducing, when reproduction of the sub-content is complete, the main content. Reproduction of a sub-content in a communication terminal can be secured through constraint condition information of a rights object, and waste of resources required for providing a sub-content can be suppressed. | 07-08-2010 |
| 20100198687 | SYSTEM AND METHOD FOR CONFIGURING CONTENT OBJECT - A digital content distribution method and system for delivering a content package including a Digital Rights Management (DRM) content and an advertisement content which is played to generate a license for playing the DRM content is disclosed. The content object format of the present invention includes a target content object; a pilot content object containing specific advertisement data; and a header indicating locations of the target content object and the pilot content object. | 08-05-2010 |
| 20100228844 | APPARATUS AND METHOD FOR CHANGING SUBSCRIPTION STATUS OF SERVICE IN MOBILE COMMUNICATION SYSTEM AND MOBILE COMMUNICATION SYSTEM THEREOF - A method for changing a subscription status of a service in a mobile communication system, and a system thereof. A method is provided for changing a subscription status of a service by a terminal in a mobile communication system. The method includes transmitting a pause request message, in which a pause period of the subscription status is included, to a network entity; receiving, from the network entity, a pause response message including therein a possible pause period for the pause period included in the pause request message, and a trigger for changing validity for a Long-term Key stored in the terminal; and changing validity for the Long-term Key using the trigger for the possible pause period included in the pause response message. | 09-09-2010 |
| 20100262826 | SYSTEM AND METHOD FOR ACQUIRING TERMINAL BINDING KEY - A first terminal subscribes to at least one service using a service guide in which information necessary for reception of each service is stored, and sends the service guide and an identifier (ID) of the subscribed service to a smartcard. The smartcard stores the service guide and the ID of the subscribed service, and sends the service guide and the ID of the subscribed service to a second terminal through a response message to a request message used for acquiring TBK information, received from the second terminal. The second terminal receives the response message by sending the request message to the smartcard, acquires TBK information corresponding to a service that the second terminal intends to play back, from the service guide depending on the subscribed service's ID included in the response message, and acquires the TBK by performing an authentication process using the TBK information. | 10-14-2010 |
| 20100325737 | RIGHTS-BASED ADVERTISEMENT MANAGEMENT IN PROTECTED MEDIA - A user playing a media file having ads on a playback device is able to automatically skip the ads during playback depending on the user's subscription level, as indicated in a user license or user account information. Whether an ad is automatically skipped may depend not only on the user license but also on attributes of the ad. An ad may have a skip-level which indicates the “importance” of the ad. If the advertiser wants to ensure that the ad will be seen and not be automatically skipped by a media playback unit, it can pay a higher price for the ad and the ad will be assigned a higher skip-level value. On the user subscription side, a user who wants to avoid ads may pay a higher subscription fee and have a user license that determines, via an auto-skip level value (“user level”), how many ads the user can automatically skip during playback of the media file. With a higher the auto-skip level value, the user is able to automatically skip more ads on the playback device. | 12-23-2010 |
| 20110096929 | ENCRYPTION KEY DISTRIBUTION METHOD IN MOBILE BROADCASTING SYSTEM, AND SYSTEM FOR THE SAME - An encryption key distribution method for service and content protection in a mobile broadcasting system, and a system for the same which includes generating, by a network, a first encryption key when the broadcast service is first provided; transmitting a generalized rights object message, which includes identification information for identifying the generated first encryption key, to the terminal; generating a second encryption key before the lifetime of the first encryption key expires; and transmitting the generalized rights object message, which includes identification information for identifying the generated second encryption key, to the terminal. | 04-28-2011 |
