A method is described for reproducing informative contents in a radio-television program, and related kit and radio-television communication system, wherein the informative contents are adjusted in accordance with the individual users' interests by taking into account their preferences as concerns advertisements, news bulletins, weather forecasts, preferred programs, etc. Furthermore, the invention allows adjusting and updating the informative contents during the reproduction of a recorded radio- television program.
H04N 21/2665 - Rassemblement de contenus provenant de différentes sources, p. ex. Internet et satellite
H04N 21/2668 - Création d'un canal pour un groupe dédié d'utilisateurs finaux, p. ex. en insérant des publicités ciblées dans un flux vidéo en fonction des profils des utilisateurs finaux
H04N 21/462 - Gestion de contenu ou de données additionnelles, p. ex. création d'un guide de programmes électronique maître à partir de données reçues par Internet et d'une tête de réseau ou contrôle de la complexité d'un flux vidéo en dimensionnant la résolution ou le débit en fonction des capacités du client
H04N 21/458 - Ordonnancement de contenu pour créer un flux personnalisé, p. ex. en combinant une publicité stockée localement avec un flux d'entréeOpérations de mise à jour, p. ex. pour modules de système d'exploitation
H04N 21/433 - Opération de stockage de contenu, p. ex. opération de stockage en réponse à une requête de pause ou opérations de cache
H04N 21/236 - Assemblage d'un flux multiplexé, p. ex. flux de transport, en combinant un flux vidéo avec d'autres contenus ou données additionnelles, p. ex. insertion d'une adresse universelle [URL] dans un flux vidéo, multiplexage de données de logiciel dans un flux vidéoRemultiplexage de flux multiplexésInsertion de bits de remplissage dans le flux multiplexé, p. ex. pour obtenir un débit constantAssemblage d'un flux élémentaire mis en paquets
H04N 21/434 - Désassemblage d'un flux multiplexé, p. ex. démultiplexage de flux audio et vidéo, extraction de données additionnelles d'un flux vidéoRemultiplexage de flux multiplexésExtraction ou traitement de SIDésassemblage d'un flux élémentaire mis en paquets
H04N 21/258 - Gestion de données liées aux clients ou aux utilisateurs finaux, p. ex. gestion des capacités des clients, préférences ou données démographiques des utilisateurs, traitement des multiples préférences des utilisateurs finaux pour générer des données collaboratives
H04N 21/262 - Ordonnancement de la distribution de contenus ou de données additionnelles, p. ex. envoi de données additionnelles en dehors des périodes de pointe, mise à jour de modules de logiciel, calcul de la fréquence de transmission de carrousel, retardement de la transmission de flux vidéo, génération de listes de reproduction
H04N 21/482 - Interface pour utilisateurs finaux pour la sélection de programmes
2.
SWITCHLESS COMBINER FOR ADDRESSING OF RADIOFREQUENCY SIGNALS AND SYSTEM FOR TRANSMISSION OF RADIOFREQUENCY SIGNALS COMPRISING SAID COMBINER
A switchless combiner is described, comprising a circuit (32) having a delay line consisting of a constant-impedance transmission line (12,12') and a device (10) adapted to vary the electric length of said transmission line (12,12'), wherein said device (10) comprises a metallic body (14) with an outer wall (16) and an inner wall (22) adapted to define a cavity (20), said walls (16,22) being interrupted in a manner such as to define a slot (24), said cavity (20) and said slot (24) extending along at least a portion of the length of said device (10), wherein said cavity (20) comprises a first portion (21) having a first cross-section and a second portion (23) having a second cross-section which is greater than said first cross-section, said second portion (23) comprising a dielectric element (27) with a cutout (25) corresponding to said slot (24), said first (21) and second (23) portions extending in the longitudinal direction of said device (10) and said transmission line being positioned, inside said first portion (21) and inside said second portion (23), in said cutout (25) of said dielectric element (27), said dielectric element (27) being adapted to occupy the cavity (20) of said second portion (23), and comprising translating means (1 1) integral with said metallic body (14) and adapted to translate said dielectric element (27) on said circuit (32) in the longitudinal direction of said device (10).
CIRCUIT AND METHOD FOR GENERATING A VARIABLE DELAY IN AN ELECTROMAGNETIC SIGNAL CROSSING SAID CIRCUIT, IN PARTICULAR FOR USE IN A DOHERTY- CONFIGURED AMPLIFIER
A circuit and a method arc described for generating a variable delay in an electromagnetic signal that crosses a main transmission line, wherein the method comprises the steps of: - coupling to said main transmission line (ML) a secondary transmission line (CL) terminated at both ends by respective variable- reactance circuit elements (20,22), wherein said main transmission line (ML) and said secondary transmission line (CL) are immersed in the same dielectric medium at a distance from each other: - simultaneously varying a reactance value of said variable-reactance circuit elements (20.22): - selecting said reactance value by varying physical and electrical parameters of said main transmission line (ML) and of said secondary transmission line (CL), so as to obtain, on said main transmission line (ML), an absorption peak at an absorption frequency higher than a predetermined working frequency of said main transmission line (ML), and an adaptation peak at a frequency lower than said transmission frequency, said adaptation peak corresponding to said predetermined working frequency.
H03F 1/02 - Modifications des amplificateurs pour augmenter leur rendement, p. ex. étages classe A à pente glissante, utilisation d'une oscillation auxiliaire
An amplifier in Doherty configuration is described, comprising a circuit (32) having a delay line consisting of a constant-impedance transmission line (12) and a device (10) adapted to vary the electric length of said transmission line (12), wherein said device (10) comprises a metallic body (14) with an outer wall and an inner wall adapted to define a cavity (20), said walls being interrupted in a manner such as to define a slot, said cavity (20) and said slot extending along at least a portion of the length of said device (10), wherein said cavity comprises a first portion having a first cross-section and a second portion having a second cross-section which is greater than said first cross-section, said second portion comprising a dielectric element (27) with a cutout corresponding to said slot, said first and second potions extending in the longitudinal direction of said device (10) and said transmission line being provided, inside said first portion and inside said second portion, in said cutout (25) of said dielectric element (27), said dielectric element (27) being adapted to occupy the cavity of said second portion, and comprising translating means (11) integral with said metallic body (14) and adapted to translate said dielectric element (27) on said circuit (32) in the longitudinal direction of said device (10).
A method and a system are described for controlling and stabilizing in time, as temperature changes, the frequency of a signal generated by a controllable oscillator (3), said method comprising the steps of: - measuring the frequency of the signal generated by the controllable oscillator (3) by using a first signal, whose duration is proportional to the length of a delay line (5) comprising at least a first (7) and a second (9) delay line portions arranged in series and having a first (L1) and a second (L2) lengths, respectively; - applying a frequency correction to the signal generated by the controllable oscillator (3) if the difference in frequency between said signal and the desired frequency value exceeds a predetermined threshold; - providing the first portion of the delay line (5) by coupling a conductive material to a first dielectric material having a first negative gradient of its dielectric constant as a function of temperature; - providing the second portion (9) of the delay line (5) by coupling said or another conductive material to a second dielectric material having a second negative gradient of its dielectric constant as a function of temperature, the absolute value of the second gradient being greater than that of the first gradient; - selecting the second length (L2) of the second delay line portion (9) in a manner such that the relation L2 = (L1 ⋅ ΔR1) / abs (ΔR2) is true, wherein ΔR1 and ΔR2 represent, respectively, a first and a second delay variations introduced by the first (7) and the second (9) line portions, and wherein said first delay variation (ΔR1) is smaller, for each Kelvin degree, than the thermal expansion coefficient of said or another conductive material.
H03L 1/02 - Stabilisation du signal de sortie du générateur contre les variations de valeurs physiques, p. ex. de l'alimentation en énergie contre les variations de température uniquement
H03K 3/011 - Modifications du générateur pour compenser les variations de valeurs physiques, p. ex. tension, température
H03L 7/00 - Commande automatique de fréquence ou de phaseSynchronisation
6.
TIME SYNCHRONISATION IN A SINGLE FREQUENCY NETWORK
The invention relates to a method for synchronizing in time a plurality of transmitters (T1-T7) belonging to a single frequency network (1), said transmitters (T1-T7) being adapted to distribute a radio frequency signal over a territory, wherein are provided the steps of: - identifying, for each transmitter of said plurality of transmitters (T1-T7), at least two transmitters (T1-T5;T6,T7) whose catchment area (B1-B7) includes at least one common catchment area (B12,B23,B34,B45;B67), and associating said at least two transmitters (T1-T5;T6,T7) with a subset of transmitters (S1;S2); - identifying, within said subset of transmitters (S1;S2), one reference transmitter (TX) and at least one secondary transmitter (TS); - determining, for each secondary transmitter (TS), a respective time offset with respect to said reference transmitter (TX) on the basis of time references contained in said radio frequency signal transmitted by said reference transmitter (TX) and received by said secondary transmitter (TS); - adjusting the transmission parameters of said secondary transmitter (TS) so as to keep said time offset constant.
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