Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A method for protecting digital content is described. The method includes receiving compressed encrypted digital content, determining an output format based, at least in part, on all of the following: a user-requested output format; received control information; and a rule determining whether a clear compressed output format is allowedand producing output from the compressed digital content based on a result of the determining, wherein, if the rule does not allow clear compressed output format, the compressed encrypted digital content is provided in a form which prevents production of clear compressed output in the producing step. Related apparatus and methods are also described.

Abstract: An information delivery device interacting with a user's eye, the device comprising an eye characteristic reader for reading at least one characteristic of the user's eye, a retinal projector for projecting information onto the retina, and an eye characteristic processor operative to receive at least one characteristic of the eye and to select the information based at least partly thereupon. A content protection system may comprise a multiplicity of such eye characteristic readers and a content protector receiving said at least one characteristic from such readers and controlling the user population's use of content to be protected based on that at least one characteristic. Related apparatus and methods are also provided.

Abstract: An advertising control method is described. The method includes receiving an advertisement identification message (AIM) (127) at a first mobile device (125), sending the AIM from the first mobile device to a content display unit (CDU) and storing the AIM in the CDU, selecting at least one content item from among a plurality of content items based, at least in part, on at least one stored AIM, the stored AIM being stored in the CDU, and displaying the selected content item on the CDU. Related apparatus and methods are also described.

Abstract: An advertising control method is described. The method includes receiving an advertisement identification message (AIM) (127) at a first mobile device (125), sending the AIM from the first mobile device to a content display unit (CDU) and storing the AIM in the CDU, selecting at least one content item from among a plurality of content items based, at least in part, on at least one stored AIM, the stored AIM being stored in the CDU, and displaying the selected content item on the CDU. Related apparatus and methods are also described.

Abstract: An advertising control method is described. The method includes receiving an advertisement identification message (AIM) (127) at a first mobile device (125), sending the AIM from the first mobile device to a content display unit (CDU) and storing the AIM in the CDU, selecting at least one content item from among a plurality of content items based, at least in part, on at least one stored AIM, the stored AIM being stored in the CDU, and displaying the selected content item on the CDU. Related apparatus and methods are also described.

Abstract: An advertising control method is described. The method includes receiving an advertisement identification message (AIM) at a first mobile device, sending the AIM from the first mobile device to a content display unit (CDU) and storing the AIM in the CDU, selecting at least one content item from among a plurality of content items based, at least in part, on at least one stored AIM, the stoned AIM being stored in the CDU, and displaying the selected content item on the CDU. Related apparatus and methods are also described.

Abstract: A method and system for securing digital content for transmission to an end user device. In a preferred embodiment, the invention provides for: a control center for controlling access to the digital content by the end user device; transmitting scrambled digital content to the end user device, such that the end user device cannot play back the said scrambled digital content; contacting the control center to request a PECM (personal ECM), the PECM being specific to the end user device; transmitting the PECM to the end user device by the control center; and unscrambling the scrambled digital content by the end user device according to the PECM.

Abstract: A method and an apparatus for protecting digital content, in which an output format for received compressed encrypted digital content is determined based, at least in part, on a rule determining whether clear compressed output format is allowed. When the clear compressed output format is not allowed, the content is received in a form in which it has been encrypted by at least two different encryption methods, and processing of the content comprises a combination of decrypting in accordance with one of the encryption methods and decompression in an atomic operation.

Abstract: A method for generating a plurality of control words, each control word controlling access to an object. The method includes providing a control word packet (CWP), generating a first control word (CW) from the CWP, providing a second CW generation input and producing a second CW based, at least in part, on both of the following the first CW and the second CW generation input. Control word generating apparatus for generating a plurality of control words is also disclosed.

Abstract: A method for controlling access to content, the method comprising: receiving content in an area in which access to the content is blacked out, the content corresponding to a blacked out event; preventing display of the content at the time of receipt; recording the received content; and allowing access to the recorded content after a time criterion is met, wherein the time criterion comprises an elapse of a predetermined period of time measured from a specified one of the following: commencement of the blacked out event and termination of the blacked out event.

Abstract: An information delivery device interacting with a user's eye, the device comprising an eye characteristic reader for reading at least one characteristic of the user's eye, a retinal projector for projecting information onto the retina, and an eye characteristic processor operative to receive at least one characteristic of the eye and to select the information based at least partly thereupon. A content protection system may comprise a multiplicity of such eye characteristic readers and a content protector receiving said at least one characteristic from such readers and controlling the user population's use of content to be protected based on that at least one characteristic. Related apparatus and methods are also provided.

Abstract: An advertising control method is described. The method includes receiving an advertisement identification message (AIM) (127) at a first mobile device (125), sending the AIM from the first mobile device to a content display unit (CDU) and storing the AIM in the CDU, selecting at least one content item from among a plurality of content items based, at least in part, on at least one stored AIM, the stored AIM being stored in the CDU, and displaying the selected content item on the CDU. Related apparatus and methods are also described.

Abstract: An advertising control method is described. The method includes receiving an advertisement identification message (AIM) (127) at a first mobile device (125), sending the AIM from the first mobile device to a content display unit (CDU) and storing the AIM in the CDU, selecting at least one content item from among a plurality of content items based, at least in part, on at least one stored AIM, the stored AIM being stored in the CDU, and displaying the selected content item on the CDU. Related apparatus and methods are also described.

Abstract: Methods and apparatus for managing, implementing and using interactive applications and content that are digitally recorded and viewed in real-time and/or a time-shifted moded are provided. The interactive applications may be associated with television programs or may be unrelated thereto, and may be transmitted together with television programs or separately therefrom. Interactive applications that are employed in a time-shifted mode can be matched to current conditions and interactive content may be updated to include current data. Users may view and manipulate highlights of television programs and receive alerts of occurrence of real-time events during viewing of recorded material. Additional manipulations of interactive applications and content are also enabled. Related apparatus and methods are also described.

Abstract: A method for controlling access to content, the method comprising: receiving content in an area in which access to the content is blacked out, the content corresponding to a blacked out event; preventing display of the content at the time of receipt; recording the received content; and allowing access to the recorded content after a time criterion is met, wherein the time criterion comprises an elapse of a predetermined period of time measured from a specified one of the following: commencement of the blacked out event and termination of the blacked out event.

Abstract: A method for controlling access to content, including preventing access to content that corresponds to a blacked out event, until at least one of a time criterion and payment criterion is met. Related methods and apparatus are also disclosed.

Abstract: 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.