Abstract: A display device is provided. The display device includes an outputter configured to output a content including a plurality of content parts, a signal processor configured to extract a first fingerprint corresponding to a first content part among the plurality of content parts of the content from at least one of a video signal and an audio signal constituting the content while the content is output, a communicator configured to transmit the first fingerprint to a server, and receive a second fingerprint corresponding to a second content part among the plurality of content parts of the content and first event information corresponding to the second fingerprint from the server, a storage configured to store the second fingerprint and the first event information, and a controller configured to control the outputter to output the first event information in coordination with the second content part of the content being output.

Abstract: An apparatus for estimating movement of a vehicle using stereo image matching is provided, which divides the stereo image information into ground, background and object labels and measures information about rotation and movement of the vehicle using the label and background labels.

Abstract: Disclosed is a content sharing method and system using an external memory. A method for transmitting encrypted contents to an external memory device list includes receiving a device list and public keys for devices, encrypting a domain key by using a public key to generate at least one device domain key, and transmitting the device domain key to the external memory. The method for performing encrypted contents further includes checking a public key of a device, extracting a device domain key corresponding to a public key checked by at least one device domain key stored in an external memory, decoding the extracted device domain key, decoding the encrypted contents by using the decoded device domain key, and performing the decoded encrypted contents.

Abstract: The present invention relates to a user created contents protection system and method. Copyright protection for protecting contents on user created contents is performed by using a contents upload server or a user terminal including a digital rights management (DRM) packager. Therefore, copyright protection of the user created contents is performed, and a user that legally provides user created contents can be rewarded. Also, when illegally distributed user created contents are generated, a person having initially attempted to distribute the contents is tracked to clarify responsibility.

Abstract: A digital rights management (DRM)-based package content providing method is disclosed. In one embodiment, one or more individual contents contained in a content package are first detected in response to a content package purchase order received from a user terminal and a package right object that can be commonly used for all of the detected individual contents is generated. Then, each of the individual contents is encoded and content transmitting information containing the encoded individual contents and the package right object is generated and transmitted to the user terminal.

Abstract: Disclosed herein is a method of reselling content in a used content server connected to a Digital Right Management (DRM) server for managing authentication information of the content of at least one computing device. The method includes the steps of receiving information of requesting the resale of the content from a first computing device; examining the authentication information of the content requested for the resale through the DRM server; registering the content for sale if the authentication information of the content is valid; receiving purchase request information of the registered content from a second computing device; requesting alteration of the authentication information of the content from the DRM server; receiving a response signal for the alteration of the authentication information of the content; and reselling the content to the second computing device.