Abstract: A method of generating a signature ? for a message m, the method enabling online/offline signatures. Two random primes p and q are generated, with N=pq; two random quadratic residues g and x are chosen in Z*N, and, for an integer z, h=g?z mod N is calculated. This gives the public key {g, h, x, N} and the private key {p, q, z}. Then, an integer t and a prime e are chosen. The offline signature part y may then be calculated as y=(xg?t)1/eb mod N where b is an integer bigger than 0, predetermined in the signature scheme. The online part k of the signature on message m is then calculated as k=t+mz and the signature ? on message m is generated as ?=(k, y, e) and returned. To verify the signature, it is checked that 1) e is an odd IE-bit integer, 2) k is an IK-bit integer, and 3) yebgkhm?x(mod N). An advantage of the method is that it may be performed without hashing. Also provided are a signing device, a verification device, and computer program supports.

Abstract: A first media service is acquired in response to a scheduled acquisition command, where the acquiring operation is performed by a user receiver. The time the acquiring operation takes place depends on information in the command, which indicates when the acquiring operation is supposed to take place and when operation terminates. The receipt of a non-scheduled command by the user receiver causes the acquisition of a second media service, where upon the expiration of the non-scheduled command, the first media service is re-acquired. Upon the expiration of the scheduled command, a third media service is automatically acquired, where the third media service was previously selected by a user.

Abstract: A method and system are provided for look data definition and transmission over a high definition multi-media interface (HDMI). The method includes generating metadata for video content. The metadata is used for altering the video content before display thereof by accounting for variations between different display devices and variations between different creative intents by a content creator. The method further includes preparing the video content and the metadata for transmission over a high definition multimedia interface.

Abstract: A reflector apparatus improves signal quality within video home networks. According to an exemplary embodiment, the reflector apparatus includes a first terminal (A) for receiving a broadcast signal from a signal source, and a second terminal (B) for outputting the broadcast signal to a plurality of external devices coupled to the reflector apparatus via a signal splitter. The reflector apparatus further includes circuitry for receiving a network signal from a first one of the plurality of external devices and controlling a gain of said network signal responsive to a control signal from a second one of the plurality of external devices to thereby generate a reflected network signal. The reflected network signal is output to the second one of said plurality of external devices.

Abstract: Methods and Systems are provided for converting a two-dimensional image sequence into a three-dimensional image. In one embodiment, a method for converting a two-dimensional image sequence into a three-dimensional image includes determining camera motion parameters between consecutive images in a monoscopic sequence of reference 2D images, wherein the consecutive images comprise a current reference image and an adjacent image, determining a horizontal disparity map for a target image using the camera motion parameters, determining a disparity probability value for each disparity vector of the disparity map, and determining a target image as a weighted average of pixel values in the current reference image using the disparity probability values, such that the target image and current reference image comprise a stereoscopic image pair.

Abstract: A networked bypass controller of the present invention receives IR codes transmitted from an IR transmitter (often a handheld device) and the controller is configured to either process the IR codes normally, or to perform actions, such as translation or association of the codes with stored function commands, on the IR codes transmitted. The networked bypass controller of the present invention can then send the resulting commands to one or more playout devices over a network to a device controller(s) for causing a response/change in an associated device(s).

Abstract: This dissertation addresses the intersection of personal wireless technology and computational intelligence. The primary research issue addressed is the organization of radio domain knowledge into data structures processable in real-time that integrate machine learning and natural language processing technology into software radio. The thesis defines and develops the cognitive radio architecture. The features needed in the architecture are derived from cognitive radio use cases. These include inferring user communications context, shaping access-network demand, and realizing a protocol for real-time radio spectrum rental. Mathematical foundations for the knowledge-representation architecture are derived by applying point-set topology to the requirements of the use cases. This results in the set-theoretic ontology of radio knowledge defined in the Radio Knowledge Representation Language (RKRL). The mathematical analysis also demonstrates that isochronous radio software is not Turing-computable.

Abstract: Files associated with the operation of gateway and client devices in a network may be downloaded with minimal operator intervention. Accordingly, a method includes receiving data including a first file, a first authentication element, and a second authentication element, the first authentication element being unique to a client device associated with the gateway device. The method also includes determining if the second authentication element is valid for the gateway device and storing the first authentication element and the second file for the client device if the second authentication element is valid for the gateway device. An apparatus includes a receiver that receives data, a processor that determines if the second authentication element is valid for the gateway device, and a memory that stores the first authentication element and a portion of the data for the client device if the second authentication element is valid for the gateway device.

Abstract: A DMB-T receiver supports a single carrier (SC) form of modulation and a multi-carrier form of modulation such as orthogonal frequency division multiplexing (OFDM). Upon receiving a broadcast signal, the DMB-T receiver downconverts the received broadcast signal to a received base-band signal and determines frame timing synchronization from the received signal as a function of frame header mode 1 and frame header mode 3 by correlating groups of received symbols spaced at least two signal frames apart within a sample shift value in a range of plus or minus one.

Abstract: A system and method for encoding video and reducing video artifacts in the encoded video are provided. The system and method of the present disclosure provide for enabling a user to simply select a preset (e.g., a group of encoding or re-encoding parameters) to fix or provide a starting point to fix video artifacts present in an encoded video. Furthermore, the system and method of present disclosure flag, classify, and organize potential post-encoding related video quality issues, e.g., video artifacts such as banding, dark noise, etc., that are detected during the encoding process. By identifying and categorizing video artifacts, the system and method make the fixing of these video artifacts easier and more precise thereby increasing quality, saving time, and performance.

Abstract: New capabilities will allow conventional broadcast transmission to be available to mobile devices. The present embodiments describe an apparatus and method for encoding and decoding signals. An apparatus includes a first encoder, the first encoder receiving data and encoding the data using a first byte code encoding process, an interleaver coupled to the first encoder to receive the encoded data from the first encoder and re-order the data, and a second encoder coupled to the interleaver to receive the re-ordered data and encode the re-ordered data using a second byte code encoding process. A method includes the steps receiving data encoding the data using a first byte code encoding process, interleaving the encoded data, and encoding the interleaved data using a second byte code encoding process. An apparatus and method for decoding signals is also described.

Abstract: There are provided methods and apparatus for incorporating video usability information (VUI) within multi-view video coding (MVC). An apparatus includes an encoder for encoding multi-view video content by specifying video usability information for at least one selected from: individual views, individual temporal levels in a view, and individual operating points. Further, an apparatus includes a decoder for decoding multi-view video content by specifying video usability information for at least one selected from: individual views, individual temporal levels in a view, and individual operating points.

Abstract: An audio circuit and associated method for enhanced intelligibility of audio content includes a first means for receiving reproduced audio content, a microphone for providing a microphone output signal in accordance with ambient noise, a second means for enabling the microphone output signal when the reproduced audio content is off, and disabling the microphone output signal when the reproduced audio content is on, and a signal processor, in communication with the first and second means. The signal processor applies a transfer function to the reproduced audio content for increasing gain to the reproduced audio content as a function of increasing amplitude of the microphone output signal, and decreasing gain to the reproduced audio content signal as a function of decreasing amplitude of the microphone output signal, and applies an equalization curve to the audio content to boost frequencies in a range that enhances consonant perception thus increasing speech intelligibility.

Abstract: A system and method of the present disclosure provides a block, or region, based error diffusion process for reducing artifacts in images. The system and method allows for the generation and the control of the spatial frequency of a masking signal, e.g., noise, in a way that it can be easily passed through the compression process. The system and method provides for selecting a block size of pixels of the image, adding a masking signal to the image, determining a quantization error for at least one block in the image, and distributing the quantization error to neighboring blocks in the image to mask artifacts in the image. An output image is then encoded with a compression function.

Abstract: A network interface apparatus is capable of bypassing an inoperable or failed network device. According to an exemplary embodiment, the network interface apparatus includes first and second transformers. A network input and a network output are respectively coupled to a first side of the first transformer and a first side of the second transformer. A terminal input and a terminal output are respectively coupled to a second side of the first transformer and a second side of the second transformer. A switch assembly is coupled to the second sides of the first and second transformers. When the switch assembly is in a first state, the second side of the first transformer is coupled to the terminal output, and when the switch assembly is in a second state, the second side of the first transformer is coupled to the first side of the second transformer bypassing the terminal output.

Abstract: A Digital Video Broadcasting-Handheld (DVB-H) system comprises a head-end and at least one receiver. The head-end uses the File Delivery over Unidirectional Transport (FLUTE) protocol for transmitting an electronic service guide (ESG) and content to the receiver. The receiver determines a time delay for receiving content as a function of a value of a PublishedStartTime parameter from the ESG and the actual time the receiver receives the content. Using this time delay, the receiver forms a time estimate for receiving selected content as a function of a value of a PublishedStartTime parameter from the ESG for the selected content and the determined time delay. The receiver then performs power, management such that during those intervals of time that the receiver is not expected to receive the selected content the receiver can reduce power.

Abstract: A method and apparatus for providing channel condition feedback in a multicast network are described including estimating a indication of channel condition, determining a receiver class based on the estimated indication of channel condition, calculating a delay, delaying transmission of the estimated indication of channel condition for the calculated delay, receiving a report from another receiver in the determined receiver class, the report including an indication of channel condition and canceling the delay if the received indication of channel condition is one of greater than and equal to the estimated indication of channel condition. The method and apparatus further include transmitting a single report for the calculated receiver class to a server including a worst indication of channel condition for the determined receiver class.

Abstract: A signal tuning system including a picture-in-picture (PIP) feature includes a first and a second tuner. The first and second tuners are adapted to tune to a first and a second channel of a received signal in response to a state of the received signal. A switching device coupled to the tuners switches the tuner carrying a primary channel to a primary display area. The switching device also switches the other tuner carrying the secondary channel to a PIP display in a PIP display area. One tuner is a higher performance tuner and the other a lower performance tuner. Therefore the more sensitive tuner is tuned to the weaker one of the two received channels.

Abstract: A liquid crystal display includes a liquid crystal display front end component (60) joined to a field emission device backlighting unit (50). The field emission device backlighting unit (50) includes a screen structure having a plurality of phosphor elements (33R, 33G, 33B) separated by a black matrix (39). The black matrix includes a metallic chrome layer. Spacers (15) separate the cathode (7) from the anode (4).

Abstract: The optical storage medium comprises a substrate layer and a data layer with a mark/space structure arranged in tracks, wherein a sequence of marks of a first track have a first width, and a sequence of marks of a neighboring track have a second width being different from the first width. The optical storage medium is in particular an optical disc, on which the tracks are arranged as spirals, circular rings or segmented circular rings.