Abstract:
A registration server (40) is connected to a mobile terminal (20) via a communication network (10) and registers desired scene information specifying a desired scene of a user in a broadcast program together with the communication address information (telephone number or mail address or the like) of the mobile terminal (20). A scene management server (42) classifies and manages the scene information on the real scene appearing in the broadcast program. A message transmission server (46) checks whether the real scene corresponds to the desired scene. If it does, the scene management server (42) transmits scene information indicating that broadcast of the desired scene is or has been started via the communication network (10) or the data broadcast to the user, i.e., the mobile terminal (20). In response to the notification of the scene information, the user of the mobile terminal (20) can view the scene substantially in real time by the TV On instruction without performing channel setting.
Abstract:
Certain embodiments consistent with the present invention involve a method of selectively encrypting and decoding digital video content. Certain of the packets are selected for encryption according to a selection criterion, wherein the selected packets exclude packets containing start of frame (SOF) headers. The selected packets are encrypted while retaining the packets containing the SOF headers unencrypted to form selectively encrypted digital video content. In decoding selectively encrypted digital video content, offsets are calculated for at least one of I frames and P frames from the SOF headers and the calculated offsets are stored as an offset table. The offset table can then be accessed to enable trick play of the selectively encrypted digital video content.
Abstract:
A method and apparatus for enabling use of multiple digital rights management scenarios (DRM). Unencrypted data representing digital content is examined to identify at least segments of content for encryption. The identified segments of content are duplicated and then encrypted using a first encryption method associated with a first DRM to produce first encrypted segments. Duplicates are encrypted using a second encryption method associated with a second DRM to produce second encrypted segments. A set of pointers are generated that point to the first and second encrypted segments content. A file is then created containing first and second encrypted segments of content, pointers and unencrypted content along with DRM rights data to produce a selectively encrypted multiple DRM enabled file.
Abstract:
A method transcodes an image in the form of an encoded input bitstream. The input bitstream includes quality layers, each quality layer includes a resolution levels, each resolution level includes components, each component includes precincts, and each precinct includes a packet partition location, a header length, and a body length. The input bitstream is decoded partially to obtain a structure of the encoded input bitstream. Coordinates of a region-of-interest in the image are specified, and progressive parameters are defined. The partially decoded input bitstream is then encoded according to the structure, the coordinates, and the progressive parameters to obtain an encoded output bitstream.
Abstract:
A multiple-contents distribution in a client and server system is disclosed. The multiple-contents contain contents-pieces, which are to be distributed to a set of clients including mobile phone terminals. The set of clients are registered with the server in response to registration requests. The server determines an order of the registered set of clients. The server then initiates a distribution of the contents-pieces to the registered sets of clients, wherein the contents-pieces are selected in accordance with the order of the clients.
Abstract:
A lossless image streaming system for the transmission of images over a communication network. The system eliminates the necessity to store a compressed version of the original image, by losslessly streaming ROI data using the original stored image. The imaging system also avoids the computationally intensive task of compression of the full image. When a user wishes to interact with a remote image, the imaging client generates and sends a ROI request list to the imaging server. The request list can be ordered according to the particular progressive mode selected (e.g., progressive by quality, resolution or spatial order). The imaging server performs a fast preprocessing step in near real time after which it can respond to any ROI requests in near real time. When a ROI request arrives at the server, a sophisticated progressive image encoding algorithm is performed, but not for the full image. Instead, the encoding algorithm is performed only for the ROI. Since the size of the ROI is bounded by the size and resolution of the viewing device at the client and not by the size of the image, only a small portion of the full progressive coding computation is performed for a local area of the original image.
Abstract:
A digital cable broadcast receiver and a method for automatically processing caption data of various standards and types, is disclosed. The digital broadcast receiver includes: a demultiplexer for dividing a received broadcast stream into video data, audio data, supplementary information; a controller for determining whether caption data included in the video data is digital caption data or analog caption data on the basis of caption information included in the supplementary information, and outputting a control signal according to a result of the determining; a digital caption decoder for extracting and decoding digital caption data from the video data according to the control signal; and an analog caption decoder for extracting and decoding analog caption data from the video data according to the control signal.
Abstract:
A video picture information delivering apparatus delivers moving pictures according to a request from a terminal device. The apparatus comprises a determining unit for determining whether or not a predetermined particular picture is included in some of moving pictures to be skipped, upon receipt of a request to skip the some of the moving pictures; and a transmitting unit for transmitting to the terminal device associated information corresponding to the particular picture along with the moving pictures after being skipped, if the particular picture is included in the some of the skipped moving pictures.
Abstract:
A partial dual encryption encoder, consistent with certain embodiments of the present invention receives video from a source of an unencrypted digital video signal. A first segment of the unencrypted digital video signal is selected for transmission over a first channel. A first encrypter encrypts a second segment of the unencrypted digital video signal under a first encryption method to produce a first encrypted segment and a second encrypter that encrypts the second segment of the unencrypted digital video signal under a second encryption to produce a second encrypted segment. A multiplexer combines the unencrypted digital video signal with the first and second encrypted segments for transmission, so that the first segment is transmitted over a first channel, the first encrypted segment is transmitted over the first channel and the second encrypted segment is transmitted over a second channel. A trigger message generator generates a trigger message indicating that the second encrypted segment of the digital video signal will be encrypted and will be transmitted on a second channel. The multiplexer further combines the trigger message with the first segment, the first encrypted segment and second encrypted segment.
Abstract:
A system and method for transmitting program data including immersive content is provided. A generated immersive video stream is first choreographed. Then, based on this choreography, the relevant macroblocks of the immersive video stream can be identified and compressed. At this point, the compressed macroblocks of the immersive video stream are ready for transmission to a distribution system. In one embodiment, a plurality of immersive video streams can be choreographed and compressed. These compressed immersive video streams can be multiplexed for transmission and subsequently de-multiplexed for display. Before display, the relevant macroblocks can be decompressed. In one embodiment, one or more terminals can display a plurality of previews associated with at least one program, and at least one preview can include immersive content. The plurality of previews can be individually or simultaneously activated.