Abstract: A method and system for managing electronic distribution of digital movies to commercial exhibitors at warp speed is made ultra secure by utilizing synchronized and concurrent digitally bifurcated data transmissions via both satellite up-links/downlinks and compressed digital data sent and retrieved from secure restrictive sites on the world wide web. All transmitted data received is interlocking and co-dependent upon each other for functional deciphered translation thereby considerably reducing the odds of piracy over present methods.

Abstract: A selective encryption method and apparatus consistent with the invention duplicates selected packets in a file or data stream and multiple encrypts the packets using multiple encryption keys. Each encryption key is valid for a specific segment of time so that changes in entitlement keys used for decryption can be made without negatively impacting a customer's ability to access content that has been paid for.

Abstract: The present invention relates to an image scrambling method and apparatus. The apparatus comprises a first dividing decoder for dividing the MPEG encoded image data stream into a plurality of data segments (for example, macro blocks or slices); at least one arrangement table recording arrangement information to be used for arranging the data segments; an arrangement circuit for arranging the data segments output from the first dividing decoder in accordance with the information recorded in the arrangement table to output a scrambled image data stream; a second dividing decoder for dividing the scrambled image data stream into a plurality of data segments; at least one rearrangement table recording rearrangement information to be used for rearranging the data segments output from the second dividing decoder; and a rearrangement circuit for rearranging the data segments output from the second dividing decoder in accordance with the rearrangement information recorded in the rearrangement table.

Abstract: A system for authentication of a digital image includes a signature generator for creating a robust digital signature for an original image based on instrument features of the image. An authentication processor extracts a set of invariant features for the original image from the digital signature, generates a corresponding set of invariant features for the present image to be authenticated and compares the two sets of invariant features to determine whether the image has been subjected to malicious manipulation. The invariant features include the polarity and magnitude of the difference between discrete cosine transform coefficients at corresponding coefficient locations in selected image block pairs. The intensity of the original image is also authenticated by comparing a mean value of coefficient of the original image to the mean value of the coefficient of the present image.

Abstract: An encryption arrangement for multiple encryption of television programs. A system according to embodiments of the present invention multiple encrypts only a portion of the data required for full presentation of a television program to permit coexistence of multiple conditional access encryption systems associated with multiple manufacturer's set-top boxes within a single system. In one embodiment, only critical packets such as those carrying a payload incorporating packetized elementary stream header information is encrypted. By only encrypting a portion of the program, dramatically less bandwidth is consumed than the alternative of multiple encryption of all program data, thus permitting a larger number of programs to be carried over the same bandwidth while permitting coexistence of multiple conditional access systems in a single cable television system.

Abstract: An encryption arrangement for multiple encryption of television programs. A system according to embodiments of the present invention multiple encrypts only a portion of the data required for full presentation of a television program to permit coexistence of multiple conditional access encryption systems associated with multiple manufacturer's set-top boxes within a single system. PID mapping techniques are used to distinguish between multiple encryptions. By only encrypting a portion of the program, dramatically less bandwidth is consumed than the alternative of multiple encryption of all program data, thus permitting a larger number of programs to be carried over the same bandwidth while permitting coexistence of multiple conditional access systems in a single cable television system.

Abstract: An encryption arrangement for multiple encryption of television programs. A system according to embodiments of the present invention multiple encrypts only a portion of the data required for full presentation of a television program to permit coexistence of multiple conditional access encryption systems associated with multiple manufacturer's set-top boxes within a single system. By only encrypting a portion of the program, dramatically less bandwidth is consumed than the alternative of multiple encryption of all program data, thus permitting a larger number of programs to be carried over the same bandwidth while permitting coexistence of multiple conditional access systems in a single cable television system.

Abstract: An information processing apparatus (and a method therefor) forms inputted digital information data into blocks which each correspond to a plurality of samples, orthogonally transforms the block data to form orthogonal transformed block data, and performs scrambling by transforming predetermined component data included in the orthogonal transformed block data. In addition, an information processing apparatus (and a method therefor) decodes scrambled, encoded data by decoding the encoded data, forming the decoded data into blocks which each correspond to predetermined data, transforming a predetermined coefficient included in the block data, and performing inversely-orthogonal-transformation of the transformed block data.

Abstract: A combined computer and decoder system for receiving broadcast digital data transmissions, characterized in that the decoder (2020) comprises a routing means (2032), broadcast digital data received at the decoder (2020) and destined for the computer (2027) being identified and routed to applications within the computer by said routing means. The computer (2027) may further include control means (2038) for controlling the configuration of the decoder, such as the selected channel frequency of the decoder.

Abstract: A method is described comprising: receiving a broadcast signal containing a plurality of encrypted multimedia channels; storing the encrypted multimedia channels in a first hard drive partition; and decrypting one or more of the encrypted multimedia channels to generate one or more decrypted multimedia channels; and storing the decrypted multimedia channels to a second hard drive partition.

Abstract: This invention provides a method to interpret and recognize huma faces. The 2nd-order eigenfeatures are used for lighting-invariant face description and both the 1 st-order and 2nd-order eigenfeatures are used for view-angle-invariant face description. After normalization and quantization, these features can describe face effectively and efficiently. In order to further reduce the size of face descriptor, variable length code can be used to encode the quantized eigenfeatures. This invention can be used in internet multimedia database retrieval, digital library, video editing, surveillance and tracking, and other applications using face recognition and verification.

Abstract: A method of authenticating a video image created by a camera (V) or similar video device. The image is formed into a first 2-dimensional pixel array (A1) with each pixel (pm,n) represented by a data word of a predetermined length. Additional data words including event information are added to this 2-dimensional array (A1). The formatted array is converted into a second 2-dimensional array (A2) which may be made smaller than the first array by eliminating rows and columns from the formatted array. A first linear vector (A3) is created using the data words in the second array, and a second linear vector (A4) is created by repositioning the data words from the first linear vector in a random pattern. A checksum is created by summing the contents of all of the data words in the second linear vector beginning at a location established by a pre-established formula. A header (H) is formed using the resulting checksum, information identifying the device used to create the image, and the time the image is formed.

Abstract: In a device for descrambling scrambled digital data, the digital data are grouped into parallel combinations of bits before being descrambled. The combinations of bits are descrambled and then split back into a serial stream of bits.

Abstract: To dynamically embed information with a digital content taken into account a digital information embedding device includes an input block receiving an image, a feature value parsing block detecting a feature value of at least a partial area of the input image, and an information embedding block modifying the area, based on the detected feature value. A feature value detected can be referred to to modify an area. This allows a content of an image to be considered in embedding digital information.

Abstract: A method of compressing media content in which a first predetermined portion of a media content is compressed using a first data-based compression algorithm and inserted into a first portion of a data frame. A second predetermined portion of the media content is compressed using a second data-based compression algorithm and is inserted into a second portion of the data frame. The second predetermined portion of the media content is different from the first predetermined portion of the media content, and the second data-based compression algorithm is different from the first data-based compression algorithm. At least one of the first and second data-based compression algorithms is a private data-based compression algorithm. A plurality of data frames are generated and are made available for distribution, for example, by transmission over a computer network, such as the Internet.

Abstract: In a method of receiving packets of data addressed to one or more receivers each having an individual identifier, wherein the data is included in a digital signal having destination addresses successively encrypted from a sequence of control words and receiver identifiers, and control messages containing the control words in encrypted form, address flags and control flags. The method processes the control messages to construct receiver addresses from the control words and the receiver identifier; directs the receiver addresses to update a receiver address register selected by the associated control flag in response to the transmitted control flags; directs each destination address to be compared with the receiver address to one of the address registers selected by the associated address flag in response to the address flags and; accepts each packet of data having a destination address matching the receiver address to which it was compared.

Abstract: A motion-picture distributor (12) uses a computer system (22) to convert video signals from a master film (14) into serial video data (41) complying with DVD-Video standards. Further, the computer system (22) modifies the sequence of scene-data sets (42-1, 42-2, . . . ) constituting the data (41) and encrypts the data for each scene-data set, thus producing encrypted non-serial video data (45). The data (45) are separated into DVD-ROMs (15-1, 15-2, . . . ), for distribution purposes. A theater (13) then uses a serialization apparatus (51) to read the data (45) from the DVD-ROMs (15-1, 15-2, . . . ), and sorts the scene-data sets in a correct sequence, thus producing encrypted serial video data (80). A motion picture projector (52) decrypts the data (80), thereby preparing the data (41). The data (41) are played back to view a movie. On the other hand, a movie distributor (12) may distribute the DVD-ROMs in a separated manner.

Abstract: An image transmission apparatus for processing hierarchically encoded image information includes an accounting unit for performing accounting processing in correspondence with the resolution of the image information.

Abstract: In order to implement the Digital Video Broadcasting descrambling algorithm in the context of MPEG compressed data streams containing interleaved sections of scrambled and unscrambled data, at a data rate of 60 MBits/sec with a clock of 2.7 MHz, a stream cipher has an input to receive scrambled video data, and an output coupled to a block cipher for providing descrambled data, the stream cipher comprises shift register means for holding input data coupled to a first mapping logic mechanism comprising at least a first logic means and a second logic means coupled in sequence and arranged to carry out similar logical steps, and the block cipher means comprising shift register means for holding the output of the stream cipher means and a second logic mapping mechanism, comprising at least a first logic means, a second logic means, a third logic means and a fourth logic means coupled in sequence being arranged to carry out similar logical steps.

Abstract: A signal such as an analog scrambled television signal in a cable television network has first scrambling mode data which is compatible with a first decoder population, but not a second decoder population. The scrambled television signal is processed to determine the scrambling mode without recovering the first scrambling mode data. Second scrambling mode data which is compatible with the second decoder population is then provided in the scrambled television signal, for example, in the vertical blanking interval or on an audio subcarrier. During processing to determine the scrambling mode, the television signal is delayed, e.g., by digitizing it and temporarily storing it in memory. The delay compensates for the time required to determine the scrambling mode. The television signal is recovered in the analog domain prior to inserting the second scrambling mode data.

Abstract: A secure video content processor ("SVCP") which receives encrypted digital video information and converts it into analog information for a monitor while preventing unauthorized access to the intermediate unencrypted digital data. The SVCP uses hardware envelopes to prevent unauthorized access to the decrypted digital stream. When a need arises to transmit digital data outside the hardware envelope, the digital data is encrypted and then decrypted when it re-enters a hardware protected section of circuitry.