Abstract: A process for authenticating an end user. A first pattern of colored quadrilaterals is generated. A second pattern of multiple colored nodes that include a first subset of nodes is generated. The first and second patterns are sent to the end user. If a transparent credit card is overlaid by the end user on top of the second pattern, then a second subset of nodes in the credit card would match in color and location the first subset of nodes. The authenticity status of the end user is determined by determining whether each node of a third subset of nodes within the second subset of nodes (i) corresponds to a unique node of the multiple colored nodes and (ii) has a color that matches a specific color in one quadrilateral of the colored quadrilaterals. The determined authenticity status is sent to the end user via an output device.

Abstract: An apparatus and method for encoding and decoding additional information into a stream of digitized samples in an integral manner. The information is encoded using special keys. The information is contained in the samples, not prepended or appended to the sample stream. The method makes it extremely difficult to find the information in the samples if the proper keys are not possessed by the decoder. The method does not cause a significant degradation to the sample stream. The method is used to establish ownership of copyrighted digital multimedia content and provide a disincentive to piracy of such material.

Abstract: A method and a system for transmitting data from a first data processing device to a second data processing device, wherein the first data processing device has a display device. The second data processing device generates an encrypted input mask and transmits it to the first data processing device which displays it. The encrypted input mask is decrypted by being viewed through an optical filter having a decryption pattern, and the data to be transmitted are input to the first data processing device using the input mask that has been decrypted by the optical filter and are transmitted to the second data processing device.

Abstract: A method and a system for transmitting data from a first data processing device to a second data processing device, wherein the first data processing device has a display device. The second data processing device generates an encrypted input mask and transmits it to the first data processing device which displays it. The encrypted input mask is decrypted by being viewed through an optical filter having a decryption pattern, and the data to be transmitted are input to the first data processing device using the input mask that has been decrypted by the optical filter and are transmitted to the second data processing device.

Abstract: System and method for filtering a data packet using a combined filter are disclosed. In one aspect, the method includes receiving a data packet and N filters each comprising a mask and value. The method includes receiving a data packet and N (wherein N is an integer and N>1) filters, each filter comprising a bit mask and corresponding bit values. The method further includes generating a common filter mask and the corresponding bit values by taking the overlapping mask bits among portions of the N filters corresponding to the common filter, the common filter being of a length smaller than each filter. The method further includes applying the common filter mask to the data packet to determine whether there is a match between the filtered data packet and each of the N filters.

Abstract: A multimedia client/server system includes a multimedia server module that is coupleable to a plurality of multimedia sources that produce at least one multimedia signal. The multimedia server module includes an encoder module that asserts a protection present signal when the at least one multimedia signal includes a copy protection signal, that generates an output signal with the copy protection signal removed when the protection present signal is asserted, and that encodes the output signal to produce an encoded signal. A server transceiver module produces a radio frequency (RF) signal that includes the encoded signal and the protection present signal, and that wirelessly transmits the RF signal.

Abstract: An apparatus and method for encoding and decoding additional information into a stream of digitized samples in an integral manner. The information is encoded using special keys. The information is contained in the samples, not prepended or appended to the sample stream. The method makes it extremely difficult to find the information in the samples if the proper keys are not possessed by the decoder. The method does not cause a significant degradation to the sample stream. The method is used to establish ownership of copyrighted digital multimedia content and provide a disincentive to piracy of such material.

Abstract: A BD-ROM stores a video stream and a plurality of pieces of copy control information. The plurality of pieces of copy control information include “CCIforHD with CM”, “CCIforSD with CM”, “CCIforHD without CM”, and “CCIforSD without CM”. The video stream constitutes video composed of a plurality of video streams. Among the plurality of pieces of copy control information, “CCIforHD with CM” and “CCIforSD with CM” indicate whether recording is permitted of a video signal converted from the video stream and output with addition of supplemental information. On the other hand, “CCIforHD without CM” and “CCIforSD without CM” indicate whether recording is permitted of the video output without addition of the supplemental information.

Abstract: An apparatus and a method of generating a video-reproducing clock signal from a 480p signal. The apparatus generates a video-reproducing clock signal from a 480p signal that includes a vertical synchronization signal, horizontal synchronization signals, and copy guard signals. The apparatus includes a coast signal generating unit and a clock signal generating unit. The coast signal generating unit generates a plurality of coast signals with pulse widths, each of which covers the different number of copy guard signals on the basis of the present copy guard signal in one frame signal of the 480p signal. The clock signal generating unit generates horizontal synchronization signals at the same period as that of the horizontal synchronization signals generated in a previous frame, while the corresponding coast signal is being generated.

Abstract: An apparatus and method for encoding and decoding additional information into a stream of digitized samples in an integral manner. The information is encoded using special keys. The information is contained in the samples, not prepended or appended to the sample stream. The method makes it extremely difficult to find the information in the samples if the proper keys are not possessed by the decoder. The method does not cause a significant degradation to the sample stream. The method is used to establish ownership of copyrighted digital multimedia content and provide a disincentive to piracy of such material.

Abstract: Embodiments of the present invention provide for the copy protection of distributed material after conditional access is applied, regardless of where the material is distributed. The solutions described provide the advantage of being sufficiently simple in implementation to qualify as “curb high” solutions. “Curb high” solutions provide a range of security from minimal security to a high level of security while requiring relatively fewer system resources to implement than prior approaches.

Abstract: A reception apparatus includes: a reception unit for receiving the scrambled content, the scrambled content being scrambled so that a predetermined unit of scrambled content is descrambled using a descrambling key corresponding to the predetermined unit of scrambled content, and at least one piece of storage information in which a list including all descrambling keys used for descrambling the scrambled content is embedded; storage unit for storing the received scrambled content and the storage information; list extraction unit for extracting the list from the stored storage information; descramble processing unit for extracting the predetermined unit of scrambled content from the stored scrambled content, extracting a descrambling key corresponding to the predetermined unit of scrambled content from the extracted list, and descrambling the extracted predetermined unit of scrambled content using the extracted descrambling key; and reproduction unit for reproducing the predetermined unit of descrambled content

Abstract: A method for adaptively filtering a control signal in a serial link includes monitoring for a blanking interval in a video stream having an associated clock signal and monitoring for an occurrence of a VSYNC signal once the blanking interval has started. A control signal is initially detected wherein the control signal occurs subsequent to the occurrence of the VSYNC signal. A set of properties of the control signal are recorded and a set of filter parameters are adjusted for detecting the control signal in a next blanking period based on the set of properties of the control signal.

Abstract: A Q-Filter is a reconfigurable technique that performs a continuum of linear and nonlinear filtering operations. It is modeled by unique mathematical structure, utilizing a function called the Q-Measure, defined using a set of adjustable kernel parameters to enable efficient hardware and software implementations of a variety of useful, new and conventional, filtering operations. The Q-Measure is is based on an extension of the well-known Sugeno ?-Measure.

Abstract: Media content, such as imagery (including video) and audio, can be encoded to convey hidden information (steganographic encoding) for a variety of purposes, including communication of auxiliary information (e.g., copyright data), authentication, tamper detection, forensic tracking, etc. The reading (decoding) of the hidden information from the media content is complicated if the content has been corrupted in some manner. One example of corruption is the lossy compression/decompression associated with JPEG processing of digital imagery. In some cases, the corruption introduces errors in the decoding. In other cases, the corruption prevents the hidden information from being decoded at all. In accordance with a preferred embodiment of the invention, reliable decoding of steganographically encoded information is enhanced by processing the corrupted media content so as to counteract some of the corruption.

Abstract: In the process of embedding watermark information in one-dimensional source data, first spread one-dimensional data x(t) is generated by subjecting one-dimensional source data s(t) to spectrum-spreading operation using a PN sequence g(t). This first spread one-dimensional data x(t) then undergoes a modified discrete cosine transformation. A specific frequency component value of the MDCT coefficients is modulated to provide association with the watermark information. The modulated frequency component then undergoes inverse transformation to generate second spread one-dimensional data x′(t). Then, using the same PN sequence in the spreading, the second spread one-dimensional data is subjected to spectrum-despreading to produce digitally watermarked one-dimensional data in which watermark data has been embedded.

Abstract: A television transmission security system, including scrambling a television signal by suppressing at least one of the horizontal sync pulse and vertical blanking interval of the television signal; transmitting the scrambled television signal; generating, and separately transmitting along with the scrambled television signal, a pilot carrier that includes timing information corresponding to the horizontal sync pulse and/or vertical blanking interval; and descrambling the scrambled television signal including receiving the pilot carrier and periodically suppressing, in accordance with the timing information included in the pilot carrier, video information of the television signal to an extent whereby at least one of the horizontal sync pulse and vertical blanking interval becomes detectable by a television receiver, thereby initiating organized receipt and display of the television signal.

Abstract: A method and apparatus for digital watermarking to resolve multiple claims of ownership is disclosed. According to one embodiment of the invention, a first watermark requiring the host data for detection is embedded into the host data. A second watermark is also embedded into the host data. According to another embodiment of the invention, a pseudo-random sequence acting as a watermark is generated based on two random keys. One of the two random keys is related to the author of the host data into which the watermark is to be embedded, whereas the other of the two random keys is dependent on the host data itself.