Abstract: Dynamically managing an operation of a content delivery network (CDN) to address excessive load upon an upload link for updating data thereto and/or upon particular portions of the CDN. A network optimizer may receive bit rate utilization data that identifies a current bit rate amount being utilized by the upload link and what digital video data is being uploaded to the CDN thereon. The network optimizer may also receive, from an analytic server, consumption information about the current load being experienced throughout different regions of the CDN. The network optimizer analyses the bit rate utilization data and the consumption information to dynamically render any changes necessary to the bit rate utilization of the upload link and to the representations of digital video propagated to some or all portions of the CDN to ensure the load remains below a predetermined threshold in both the upload link and throughout the CDN.

Abstract: Data is exchanged between two decoders by means of an antenna cable while, at the same time, being able to position at least two decoders in two different transmission bands or on two independent antennas. A signal distribution device in a multi-decoder reception system has means, such as a band pass filter, for linking the input/outputs, connected to the decoders, between them in order to form an electrical contact limited to a communication frequency band.

Abstract: The present invention relates to a converter and a procedure for converting digital signals received in modulated and multiplexed form. The converter comprises in a single unit, means for downconverting received signals, means for selecting at least one part of the signals by adjustment at at least one determined frequency, and means for demodulating these parts, producing at least one demodulated subsignal, means for demultiplexing these subsignals, extracting portions, means for remultiplexing these extracted portions in at least one remultiplexed flow, and transformation means for modifying these remultiplexed flows in accordance with at least one communication protocol.

Abstract: The present invention relates to a converter and a procedure for converting digital signals received in modulated and multiplexed form. The converter comprises means for selecting at least one part of the signals by adjustment at at least one determined frequency, means for demodulating these parts, producing at least one demodulated subsignal, means for demultiplexing these subsignals, extracting these portions, means for remultiplexing these extracted portions in at least one remultiplexed flow, and transformation means for modifying these remultiplexed flows in accordance with at least one communication protocol. It also comprises a means for extracting transmission information received from recipient receivers, the transformation means determining the transmission criteria according to transmission information.

Abstract: A DVD transport stream including a video and a sub-picture stream shall be transcoded to a broadcasting transport stream. For this a decoding-encoding-chain merging video and sub-picture into a single video bitstream to conserve the information of the sub-pictures although not in the broadcasting format reserved is provided. By performing a sub-picture macroblock analysis the transcoding can be controlled such that the motion estimation unit of a standard MPEG-2 encoder and/or the entire decoding loop within the encoder can be saved.

Abstract: The method of demodulation in an STB comprising a tuner including a local oscillator, a demodulator situated downstream of the tuner and a digital telephone base. In case of interference with the digital telephone base, the frequency of the local oscillator of the tuner is shifted by one or more synthesis intervals after scanning of an error indicator situated in the demodulator. This method makes it possible to insert a digital telephone base into an STB while circumventing disturbances in the operation of the STB when this base is transmitting.

Abstract: The present invention relates to a method of binary encoding the N points of a constellation corresponding to the discrete positions, in amplitude and in phase, associated with the encoding of binary words in the case of a multicarrier modulation of OFDM type (Orthogonal Frequency Division Multiplexing) of a digitized signal. According to the method, two adjacent points of the constellation correspond to binary words which differ from one another by at most two bits. The present invention applies in particular to digital television.

Abstract: The present invention relates to a method of realigning the local oscillators of a receiver, as well as a device for implementing the method. In a receiver with a high frequency/intermediate frequency translation oscillator, an intermediate frequency/baseband translation oscillator, and a sampling oscillator receiving a signal modulated by at least one circuit for inverse fast Fourier transform FFT.sup.-1 computation according to a multicarrier modulation of OFDM (Orthogonal Frequency Division Multiplexing) type with addition of a transition interval at the start of each transmission interval. The spectrum of the signal has two master lines with a fixed frequency difference between them.

Abstract: A transmission method and a transmitter and receiver Structure is disclosed which provides for transmission of modulated waves using long pulses with a plurality of frequencies. The method involves two consecutive frequencies being separated by 1/T, where T is the period of the useful transmission intervals. The method and the apparatus are particularly suited to broadcasting and reception of television and radio signals as well as telephone communications between exchanges and between radio telephones and communication stations including terrestrial stations and satellites and local computer networks. Most particularly the method is applicable to high fidelity radio transmissions as well as to high definition television (HDTV).