Patent application number | Description | Published |
20080289050 | Copyright Protection Storage Medium, Information Recording Apparatus and Information Recording Method, and Information Playback Apparatus and Information Playback Method - To provide a copyright protection storage medium in which copyright protected contents are recorded by an information recording apparatus connected to a content server providing copyright protected contents and a license server handling licenses concerning recording/playback of the copyright protected contents through a network, in which the copyright protected contents are written by a simple copy-and-paste when the information recording apparatus is possessed by a prescribed user, and the copyright protected contents are written by combining a domain model which assures playback in the apparatus and a media-bind model when the information recording apparatus is possessed by another user. | 11-20-2008 |
20090010430 | Streaming system for distributing encrypted compressed image data, and streaming method therefor - The present invention is directed to a streaming system for encrypting compression-encoded image data to distribute it via network of a predetermined transport protocol, and a streaming server used in this system transmits, to a client terminal, on the RTP packet basis, stream data encrypted so that encryption is performed every encryption block size from the leading portion of each GOP without encrypting the last data having less than encryption block size. In this instance, portions of prior and/or posterior stream data are stored into an extended area of RTP header so that size of stream data transmitted every RTP packet is integral multiple of encryption block size. Further, size information of added prior additional data and/or posterior additional data are also stored into the extended area. This streaming server suppresses increase in size by encryption to have ability to support both real time production and down-load reproduction without replacement of encryption. | 01-08-2009 |
20090074182 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, RECORDING MEDIUM, AND PROGRAM - The present invention relates to an information processing apparatus, an information processing method, a recording medium, and a program for importing and exporting a content with information missing controlled. A CPU extracts a sound track contained in the content in step S | 03-19-2009 |
20090323943 | DATA TRANSMISSION SYSTEM - A cipher key is generated by first information shared in secrete between a data transmitting unit | 12-31-2009 |
20100290619 | ENCIPHERING APPARATUS AND METHOD, DECIPHERING APPARATUS AND METHOD AS WELL AS INFORMATION PROCESSING APPARATUS AND METHOD - The invention provides an enciphering apparatus and method, a deciphering apparatus and method and an information processing apparatus and method by which illegal copying can be prevented with certainty. Data enciphered by a 1394 interface of a DVD player is transmitted to a personal computer and a magneto-optical disk apparatus through a 1394 bus. In the magneto-optical disk apparatus with which a change to a function is open to a user, the received data is deciphered by a 1394 interface. In contrast, in the personal computer with which a change to a function is open to a user, the enciphered data is deciphered using a time variable key by a 1394 interface, and a result of the decipherment is further deciphered using a session key by an application section. | 11-18-2010 |
20100325417 | RENDERING RIGHTS DELEGATION SYSTEM AND METHOD - Methods and systems for controlling the distribution of digital content are provided. A license holder acquires protected content and an original digital license to the protected content from a content provider system. The license holder in turn delegates all or part of the grants in that original license to other qualified devices or clients. The content remains in its original, protected or encrypted form while it is delivered from the license holder to the client along with a digital sublicense that the client receives from the original license holder, whereupon the content can then be rendered. The original digital license defines or governs the conditions under which such delegation occurs, and includes terms under which such delegation is permitted to continue in order to enforce the intent of the content provider. | 12-23-2010 |
20110274272 | DATA TRANSMISSION SYSTEM - A cipher key is generated by first information shared in secrete between a data transmitting unit | 11-10-2011 |
20120257744 | ENCIPHERING APPARATUS AND METHOD, DECIPHERING APPARATUS AND METHOD AS WELL AS INFORMATION PROCESSING APPARATUS AND METHOD - The invention provides an enciphering apparatus and method, a deciphering apparatus and method and an information processing apparatus and method by which illegal copying can be prevented with certainty. Data enciphered by a 1394 interface of a DVD player is transmitted to a personal computer and a magneto-optical disk apparatus through a 1394 bus. In the magneto-optical disk apparatus with which a change to a function is open to a user, the received data is deciphered by a 1394 interface. In contrast, in the personal computer with which a change to a function is open to a user, the enciphered data is deciphered using a time variable key by a 1394 interface, and a result of the decipherment is further deciphered using a session key by an application section. | 10-11-2012 |
20130236008 | DATA TRANSMISSION SYSTEM - A cipher key is generated by first information shared in secrete between a data transmitting unit | 09-12-2013 |
20130236009 | ENCIPHERING APPARATUS AND METHOD, DECIPHERING APPARATUS AND METHOD AS WELL AS INFORMATION PROCESSING APPARATUS AND METHOD - The invention provides an enciphering apparatus and method, a deciphering apparatus and method and an information processing apparatus and method by which illegal copying can be prevented with certainty. Data enciphered by a 1394 interface of a DVD player is transmitted to a personal computer and a magneto-optical disk apparatus through a 1394 bus. In the magneto-optical disk apparatus with which a change to a function is open to a user, the received data is deciphered by a 1394 interface. In contrast, in the personal computer with which a change to a function is open to a user, the enciphered data is deciphered using a time variable key by a 1394 interface, and a result of the decipherment is further deciphered using a session key by an application section. | 09-12-2013 |