摘要:
A digital content receiver (DCR) (5) is described comprising: a local scrambling descrambler (100), a broadcast descrambler (110) receiving an output produced by the local scrambling descrambler (100), a local scrambler (120), a combined extra encryption algorithm decryptor and decoder / decompressor (XDDC) (130), and a switch (140) operative to provide an output of the broadcast descrambler (110) to exactly one of the local scrambler (120) and the XDDC (130). The DCR (5) is operative to receive control information (160) and compressed encrypted digital content (70), and at least the setting of the switch (140) is determined, at least in part, by the control information (160). The DCR (5) is operative to produce an output based on all of the following: the compressed digital content (30), a user-requested output format, the received control information (160), and a rule determining whether a clear compressed output format is allowed. If the rule does not allow clear compressed output format, the compressed encrypted digital content (70) is provided to the DCR in a form which prevents production of clear compressed output (30) as the output of the DCR.
摘要:
A method for displaying advertisements associated with at least one item of an interactive television application, the method comprising transmitting an interactive television application including said at least one item, the interactive television application having an advertising slot adapted to be associated with an advertisement associated with said at least one item, storing the interactive television application; transmitting a replacement advertisement; and associating, in response to said transmitting step, the advertising slot with the replacement advertisement.
摘要:
A method for producing an auxiliary video stream arranged for reverse trick mode playback from a video stream including a plurality of uni-directional predicted frames, the method including producing the auxiliary video stream by performing the following steps copying each uni-directional predicted frame included in the video stream into a memory, thereby producing a plurality of copied frames in the memory, replacing each one of the plurality of copied frames with one corresponding supplemental frame, thereby producing a plurality of corresponding supplemental frames, and producing a copy of the video stream arranged in reverse processing order, the producing a copy including replacing each frame which corresponds to one of the plurality of copied frames with the one corresponding supplemental frame from among the plurality of corresponding supplemental frames. Related methods and systems are also described.
摘要:
A method for displaying advertisements associated with at least one item of an interactive television application, the method comprising transmitting an interactive television application including said at least one item, the interactive television application having an advertising slot adapted to be associated with an advertisement associated with said at least one item, storing the interactive television application (1210); transmitting a replacement advertisement; and associating, in response to said transmitting step, the advertising slot with the replacement advertisement (1230).
摘要:
A method for producing an auxiliary video stream arranged for reverse trick mode playback from a video stream including a plurality of uni-directional predicted frames, the method including producing the auxiliary video stream by performing the following steps copying each uni-directional predicted frame included in the video stream into a memory, thereby producing a plurality of copied frames in the memory, replacing each one of the plurality of copied frames with one corresponding supplemental frame, thereby producing a plurality of corresponding supplemental frames, and producing a copy of the video stream arranged in reverse processing order, the producing a copy including replacing each frame which corresponds to one of the plurality of copied frames with the one corresponding supplemental frame from among the plurality of corresponding supplemental frames. Related methods and systems are also described.
摘要:
A content display unit for receiving content items for display, comprising: a content identification message receiver arranged to receive at least one content identification message from a mobile device; a content identification message storage unit arranged to store the at least one received content identification message; a content storage arranged to store a plurality of content items comprising a payload and content item metadata; a content item selector arranged to select at least one content item for display from among a plurality of content items based, at least in part, on at least one content identification message stored in the content identification message storage unit and on the content item metadata; and a display for displaying the selected content item.
摘要:
A method for flexible and secure transmission of digital content to an end user device comprises the steps of: (a) providing a control center (240) for controlling access to the digital content by the end user device (310); (b) transmitting scrambled digital content to a first end user device (310) by a second end user device (310), such that said second end user device cannot play back said scrambled digital content; (c) connecting said second end user device (310) to said control center (240); and (d) transmitting a permission message to said second end user device (310) by said control center (240), such that said second end user device is able to unscramble said scrambled digital content to form unscrambled digital content.