摘要:
Encrypted data transmitted over a data network is decrypted in accordance with a cipher decryption process using a Control Word transmitted with the data. The process is arranged to automatically identify the mode by which the data has been encrypted by identifying (66) the length of the Control Word transmitted with the encrypted data. The Control Word length may be identified (64) from metadata explicitly stating the length, or by analysis of the message in which the Control Word is conveyed. Different encryption modes using Control Words of different lengths can thus be identified, allowing the receiver to identify (67) which of a plurality of decryption modes available to the receiver should be used (69) to decrypt the data.
摘要:
A solution for peer-assisted distribution of video content over a broadband network is disclosed. A video file is segmented (11) into segments and segmentation metadata is generated (12). The segments are converted (13) to media stream segments with counter/timestamp consistency. The media stream segments and the segmentation metadata are injected (15) into a peer-assisted video delivery system. The segmentation metadata are then used for regenerating (20) the video file after reception of the media stream segments.
摘要:
The present technology relates to a receiving device, a reception method, a transmitting device, and a transmission method capable of performing an effective filtering process. There is provided a receiving device including a filtering processing unit that performs a filtering process of a packet by using filtering information arranged in a header of the packet transmitted in a first layer that is a layer upper than an IP layer in layers of a protocol of the IP transmission system in a broadcasting wave of digital broadcasting using an IP transmission system. The present technology, for example, can be applied to a television set.
摘要:
An information device is basically provided that comprises a communication component, a controller, a memory, and an application. The communication component is configured to communicate with an external device. The controller is configured to download video data from the external device via the communication component, and is configured to produce distribution data of the same format as the video data from the video data. The memory is configured to store the distribution data. The application includes a local server and a playback component, and is configured to play the distribution data. The controller is configured to execute the application, and is configured to send the distribution data stored in the memory from the local server to the playback component.
摘要:
Method and apparatus for transmitting and receiving a signal in a broadcasting communication system are provided. Data of an input stream is divided for transmission through a frame. A header that includes information about the input stream is constructed. The frame is constructed using the header and the divided data.