Abstract:
L'invention concerne un dispositif et une méthode de stockage en ligne, dispositif et méthode de recherche de contenu similaire, un dispositif et une méthode d'émission et un dispositif et une méthode de réception. On enregistre des données chiffrées chez un fournisseur de services en ligne. Avec les données chiffrées, on enregistre des données de hachage chiffrées avec une clé publique et l'on chiffre le contenu à enregistrer avec le hachage. Cela permet avantageusement d'éviter la duplication de données chez le fournisseur de services en ligne tout en préservant la vie privée des utilisateurs du service. Afin de rechercher des contenus similaires à des données multimédias de référence, on enregistre également des empreintes chez le fournisseur de services. Afin de limiter le nombre de faux positifs retournés, l'empreinte peut contenir outre une empreinte de recherche, une empreinte de sélection chiffrée.
Abstract:
The present invention relates, according to a first aspect, a method for reduction of the difference in phase between a first signal and a second signal, a phase locked loop PLL 1 receiving the samples PCR r from the first signal and producing local samples PCR_loc 1 from the second signal, said loop PLL 1 also producing a second signal from a difference ε between the samples received PCR r and the local samples PCR_loc 1 , parameters ADDEND from the phase locked loop being initialized and modified during the functioning. According to the invention, when the phase locked loop PLL1 functions in a regime established during a first connection, it comprises: - a step 10 of acquisition of at least one value Val1, Val2 of at least one parameter ADDEND of the phase locked loop PLL 1 as well as a timestamp t1, t2 at which the acquisition was realized, - a step 20 of memorization of the value Val1, Val2 of the parameter or parameters ADDEND in a database.
Abstract:
The invention concerns a device for transmitting packets in a packet communication network comprising at least two stations, including in particular means for generating a first temporal descriptor from a sampled value of a master counter, means for generating a second temporal descriptor from a sampled value of a second counter synchronized on all the network stations and means for transmitting jointly the two temporal descriptors in the network. The invention also concerns a device for receiving packets in a packet communication network, which uses the double temporal descriptor generated by the transmitter device.
Abstract:
The invention concerns a device for transmitting packets in a packet communication network comprising at least two stations, characterized in that it includes means for: extracting image cues from a synchronizing signal; initializing a first counter based on said image cues; initializing a second counter every "m" zero crossing of the first counter; sampling the second counter all the Tech periods, where Tech is derived from a time base synchronized on all the network stations; and transmitting packets containing the samples in the network. The invention also concerns a device for receiving packets in a packet communication network comprising at least two stations.
Abstract:
The present invention relates to the domain of video equipment. More specifically, it concerns a reception device that comprises the means for: - receiving packets containing samples PCR r , that come from data sampled every T ech period, where T ech is from a time base synchronised on all the stations of said network, - regenerating a counting ramp CSR_PCR 1 having a count increment C and a range value PCR_Modulus, using a phase-locked loop PLL 1 that receives the samples PCR r and that delivers local samples PCR_loc 1 every T ech period and a reconstituted clock CLK_out 1 , - initialising, at every zero-crossing of the counting ramp CSR_PCR 1 , an image counter CPT that is determined by the reconstituted clock CLK_out 1 . According to the invention, it comprises, further, means MES 1 for determining the values of count increments ΔC.
Abstract:
The present invention relates to a reception device able to receive packets in a communication network comprising at least two stations. The device comprises means for: - receiving packets containing samples PCR r of the network which originate from data sampled every period T smp , where T smp emanates from a time base synchronized on all the stations of the said network; - regenerating a counting ramp CSR_PCR 1 with the aid of a loop PLL 1 receiving the samples PCR r and furthermore delivering local samples PCR_IOC 1 every period T smp and a clock CLK_OUt 1 ; the phase-locked loop PLL 1 comprises: - a samples comparator CMP 1 comparing the samples PCR r and the local samples and delivering an error signal ERR; - a corrector COR 1 receiving the signal ERR and delivering a corrected error signal ERC, the corrector COR1 having a static gain equal to 1; - a digital oscillator VCO 1 receiving the corrected error signal ERC and delivering the clock CLK_OUt 1 , which has a frequency dependent on the signal ERC and is proportional to a gain G. According to the invention, the phase-locked loop PLL 1 comprises, furthermore, a gain adjustment device DAG 1 which determines a gain value G as a function of the error signal ERR.
Abstract:
La présente invention se rapporte à un procédé de restauration d'un système de réservation de service sur un réseau après une défaillance comprenant une première étape consistant à invalider au moins une partie des réservations qui ne sont plus vues par ledit système de réservation de service en raison de ladite défaillance, une seconde étape consistant à recalculer lesdites réservations qui n'étaient plus vues par ledit système de réservation de service en validant les réservations qui sont valides dans la topologie du réseau après ladite défaillance et en annulant les réservations qui sont invalides dans la topologie du réseau après ladite défaillance.
Abstract:
The invention concerns a device for receiving packets in a packet communication network comprising at least two stations, characterized in that it includes: a phase-locked loop; as well as means for: receiving packets containing samples of said network, said samples being derived from data sampled every Tech period, where Tech is derived from a time base synchronized on all the stations of said network and said samples being associated with incremental values predicting at least one sample; calculating, in case of interruption of packet reception, a prediction of a sample which should have been received, by adding an incremental value to a received sample value. The invention also concerns a device for transmitting packets in a packet communication network.
Abstract:
La présente invention se rapporte à un dispositif apte à émettre des paquets dans un réseau de communication par paquets comportant au moins deux stations, caractérisé en ce qu' il comporte des moyens pour : extraire des tops image à partir d'un signal de synchronisation; initialiser un premier compteur à partir desdits tops image; initialiser un second compteur tous les ≤ m ≥ passages à zéro du premier compteur; échantillonner le second compteur toutes les périodes T ech , où T ech est issu d'une base de temps synchronisée sur toutes les stations dudit réseau; et émettre des paquets contenant les échantillons dans le réseau. La présente invention se rapporte également à un dispositif apte à recevoir des paquets dans un réseau de communication par paquets comportant au moins deux stations.
Abstract:
The present invention relates to the domain of video equipment. It concerns more specifically a transmission device able to transmit packets, said device comprising the means to extract image ticks from a synchronisation signal, the means to initialise an image counter from said image ticks, the means to initialise a CPT_ PCR counter every "m" passage through zero of the image counter, CPT_PCR producing counting ramps CSE_PCR with a range M, the means to sample the counting ramps CSE_PCR every T ech period, where T ech is from a time base synchronised on all the stations of said network, and the means to transmit packets comprising a PCR e sample of the CSE_PCR counting ramp. According to the invention, it also comprises the means to insert in the packet: - an Num index identifying the CSE_PCR counting ramp from which the PCR e sample is realised, and - a time label Datejnit indicating a CSE_PCR counting ramp timestamp passage through a reference value PCR_REF comprised between 0 and M-1.