Abstract: The invention relates generally to an apparatus and a method for securing impulse program purchases from conditional access network broadcast systems. The invention include providing entitlement codes to a set top boxe having security modules, located at a customer's corresponding program listening and viewing system. A customer desiring to makes an impulse purchase communicates the request to a broadcast system. In one embodiment of the invention, a message from the customer's access device transmits to a broadcast system's headend to indicate the desired purchase. In response to receiving an impulse purchase signal, the headend creates and sends an authorization code that thereafter authorizes the set top box to decode the impulse purchased program when it is received.

Abstract: A method and system for adding a conditional access system to a digital audio/video transmission system that delivers content from a source to a security device associated with an audio/video processing device by providing at the broadcast source a datastream having system information data including an unused identifier reserved for security data associated with the additional conditional access system.

Abstract: A method for adding a conditional access system to a digital audio/video transmission system that delivers content from a source to a security device associated with an audio/video processing device by providing at the broadcast source a datastream having system information data including an unused identifier reserved for security data associated with the additional conditional access system.

Abstract: A projection system can include a color wheel and at least one digital micromirror device. The color wheel can produce different colors of light from a light source. Each color can be produced in sequential order for a predetermined color phase. Each of the digital micromirror device(s) can have a plurality of micromirrors. At least one of the plurality of micromirrors can be activated at different respective portions of each of two consecutive color phases responsive to a control signal. The projection system also can include a lens configured to project light reflected from the at least one digital micromirror device onto a projection surface.

Abstract: A method for providing local security of audio and video content during transmission and storage within digital home networks. Scrambled content may be recorded in all conditions, however, only authorized copies are processed for descrambling and viewing. Content is protected within a network by rebundling the keys required for descrambling, e.g., the TDES keys, into a new ECM (LECM), which is protected by a local public key.

Abstract: A method for managing access to a signal representative of an event of a service provider by permitting a subscriber of the service provider to view an event for which the subscriber is not authorized for a specified time period; and transmitting at least one authorization code for the event to the subscriber during the specified time period.

Abstract: An apparatus for marking a film copy includes a mapper and a coder. The mapper maps a print identifier to be associated with the film copy into a serial number comprising a sequence of J numbers. The coder creates at least two-error correcting numbers, e.g. Y and Z, as a function of one, or more, of the J numbers. The film copy is then marked in accordance with L numbers, which comprise at least the two-error correcting numbers Y and Z.

Abstract: A conditional access system and method including a first source device and a first sink device coupled to the first source device, wherein the source device includes a module for generating sequence counter values and appending the values to content transmitted from the source device to the sink device.

Abstract: A method for protecting the digital output signal of a security module, comprising the steps of: receiving a scrambled digital signal from a source external to said security module, recovering at least one transport scramble control flag from the scrambled digital signal, descrambling said received scrambled signal to generate a descrambled signal, monitoring the at least one transport scramble control flag, generating a scrambling key in response to said monitored at least one transport scramble control flag, and scrambling said descrambled signal using said scrambling key to generate a re-scrambled signal. The present invention also includes a conditional access system comprising a host device and a security device coupled to the host device, such that the security device includes at least one transport scramble control flag modification circuit. By monitoring the transport scramble control flag as content passes through the security module, protection of the content can be securely maintained.

Abstract: A method and a system for identifying a copy of an image sequence which is presented on a screen. At least one identifier distinct from the image sequence can be projected through the screen such that the identifier is displayed using visible light along with the image sequence. The identifier can be presented at periodic intervals and can define a theater location, a date and/or a time. A color and/or an illumination of at least a portion of the image sequence presentation can be measured. Based on the measured illumination and/or color, a projection brightness and/or color can be determined for the identifier. Also, a location on the screen through which the identifier should be projected can be determined.

Abstract: A projection system can include a color wheel and at least one digital micromirror device. The color wheel can produce different colors of light from a light source. Each color can be produced in sequential order for a predetermined color phase. Each of the digital micromirror device(s) can have a plurality of micromirrors. At least one of the plurality of micromirrors can be activated at different respective portions of each of two consecutive color phases responsive to a control signal. The projection system also can include a lens configured to project light reflected from the at least one digital micromirror device onto a projection surface.

Abstract: A method for verifying that a source device is authorized to communicate otherwise protected content to a sink device in a conditional access system using identification codes.

Abstract: An apparatus and a method for controlling distribution of digital content from an device attached to a network to another device outside the network. The device receives a digital signal containing content, the digital signal having an authorization field indicative of a first transport mode authorizing the content for distribution outside the network, and of a second transport mode wherein the content is not authorized for transmission outside the network.

Abstract: A system and method for marking, coding and tracking a film print in an efficient, adaptive and customized manner for providing unique and robust identification of each individual film print and for facilitating accurate tracking of the origin of a pirated copy is described herein. A film print to be marked is calibrated and provided in computer-readable form for input to a prescreening device. The calibrated film print is reviewed and ideal locations on each frame of the film print are chosen for applying a mark. A unique coding scheme is generated for each desired print. If a pirate copy is found, all marks are located and a matching serial number (e.g., coding scheme) is determined for the pirated copy based on marks found in the pirate copy when compared to a database storing film print mark information generated during the marking and coding process.

Abstract: A method for uniquely identifying a copy of a motion picture disposed on a medium. A first sequence and a second sequence of the motion picture each can be selectively marked with an identifier mark to collectively define a uniquely identifiable marking pattern. A third sequence of the motion picture can be selectively marked with an error correction mark correlating to the uniquely identifiable marking pattern. The uniquely identifiable marking pattern is determinable absent at least one of the identifier marks by processing the error correction mark and remaining ones of the identifier marks. The error correction mark can be determined from values correlating the identifier marks.

Abstract: A method for enabling a security device to access a service protected by a conditional access system, wherein the service has associated with it two conditional access (CA) system identifier pairs. The device extracts the two CA identifier pairs and automatically identifies the pairs based on a predefined convention, for example, the order in which the identifier pairs are sent. The identifier pairs may comprise a conditional access entitlement control message identifier and a local entitlement control message identifier.

Abstract: A device for sensing unauthorized use of an electronic security device has a host device and a detector with a loop antenna associated with the port that receives the electronic security device, such as a smart card. The host device comprises a housing having the port formed therein. In one embodiment, the port detector senses radiation emitted from unauthorized use of the electronic security device by attachment of hot-wire conductors to the security device, which conductors carry currents through the port and the detector. In an alternate embodiment, the dielectric constant of the electronic security device is measured and compared to a predetermined value for distinguishing a nominal device from one with attached hot wiring.

Abstract: A conditional access system and method including a first source device and a first sink device coupled to the first source device, wherein the source device includes a module for generating sequence counter values and appending the values to content transmitted from the source device to the sink device.

Abstract: A method for managing access to a signal representative of an event of a service provider by permitting a subscriber of the service provider to view an event for which the subscriber is not authorized for a specified time period; and transmitting at least one authorization code for the event to the subscriber during the specified time period.

Abstract: A method for managing access to scrambled broadcast or transmitted events received from a variety of service providers (including broadcast television networks, cable television networks, digital satellite systems). In one preferred embodiment, each service provider employs a different public key for encrypting the access information message, and each smart card includes the corresponding private keys for the public keys, thereby permitting a user to access events from various service providers without changing the smart card.