摘要:
The invention concerns a method for-transmitting digital television services via a gateway suitable to receive several digital multiplexes, each multiplex comprising at least one digital audiovisual service, the gateway being capable of receiving a limited number of multiplexes among the said plurality and of transmitting them to at least one terminal. In order to improve access to the service when the gateway reaches its capacity limit, the gateway transmits a list of at least one available service, to at least one of the terminals; the available services being present on the multiplexes, that the gateway can receive depending on the possible services already transmitted to at least one of the said terminals.
摘要:
A reception device is able to receive packets in a communication network comprising at least two stations. The device is capable of receiving packets containing samples of the network which originate from data sampled every period Tsmp, where Tsmp emanates from a time base synchronized on all the stations of the said network; regenerating a counting ramp with the aid of a loop receiving the samples and furthermore delivering local samples every period Tsmp and a clock. The phase-locked loop comprises: a samples comparator comparing the samples and the local samples and delivering an error signal; a corrector receiving the signal and delivering a corrected error signal, the corrector having a static gain equal to 1; a digital oscillator receiving the corrected error signal and delivering the clock, which has a frequency dependent on the signal and is proportional to a gain. According to the invention, the phase-locked loop comprises, furthermore, a gain adjustment device which determines a gain value as a function of the error signal.
摘要:
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 of the network which originate from data sampled every period Tsmp, where Tsmp emanates from a time base synchronized on all the stations of the said network; regenerating a counting ramp with the aid of a loop receiving the samples and furthermore delivering local samples every period Tsmp and a clock; the phase-locked loop comprises: a samples comparator comparing the samples and the local samples and delivering an error signal; a corrector receiving the signal and delivering a corrected error signal, the corrector having a static gain equal to 1; a digital oscillator receiving the corrected error signal and delivering the clock, which has a frequency dependent on the signal and is proportional to a gain. According to the invention, the phase-locked loop comprises, furthermore, a gain adjustment device which determines a gain value as a function of the error signal.
摘要:
A process for transmitting data in a network adapted for isochronous and asynchronous transmissions and comprising a sender and at least one receiver. The process comprises the steps of: opening an isochronous transmission channel between the sender and the receiver; dispatching by the sender through the isochronous channel of a plurality of start of transmission indicator packets until reception of an acknowledgement of receipt on the part of the receiver, following the reception of the acknowledgement of receipt by the sender, dispatching by the sender through the isochronous channel of at least one payload packet; following the detection of the poor reception of a packet, dispatching by the receiver of an error message to the sender; in case of reception by the sender of an error message dispatched by the receiver, resumption of the transmission of payload data onwards of the error; dispatching by the sender through the isochronous channel of an end of message packet following the transmission of all the payload data. The invention also provides a process for receiving data comprising the steps of error detection hereinabove, from the point of view of a receiver, as well as a sending process comprising the steps of dispatching the start of transmission indicator packets and awaiting acknowledgement of receipt indicator packets, from the point of view of a sender.
摘要:
The present invention relates to a method for selection of shots represented by identifiers displayed in a navigation menu. A document is divided into shots. Several attributes such as the moment of appearance of the shot in the document are assigned to each shot. The navigation menu disposes the identifiers according to a first axis according to the moment of appearance of the associated shot and according to a second axis according to the value of a second attribute according to a criterion other than the moment of appearance. A third attribute is determined for each shot according to a criterion other than the two first criteria, the shot identifiers having the same value as this third attribute are connected graphically. In this way the user perceives the value of several attributes associated with each shot and can easily select the shot that interests him. The invention also relates to a display device able to display the navigation menu.
摘要:
The invention relates to a method of managing the content of a file belonging to a file system allocating resource cells of a recording medium to files, the allocation of the cells being structured by so-called structural information. According to the invention the method according to the invention comprises a step of modifying the content of the file by allocating and/or deallocating an integer number of cells at a chosen position of the content of the file, this step of modifying the file being carried out by updating the structural information of the file system. Application to audio/video digital data processing.
摘要:
The reproduction device is for displaying video information comprising a plurality of chapters. The reproduction device comprises a control unit which is configured to initiate a display of a chapter menu having selectable menu items. Further, the control unit is configured to initiate a reproduction of a chapter of the video information upon selection of the dedicated menu item. The reproduction device is configured to generate attributes of the chapters which are indicative to a respective one of the chapters and to generate a display diagram of the attributes. This diagram may be displayed in the chapter menu.
摘要:
The reproduction device is for displaying video information comprising a plurality of chapters. The reproduction device comprises a control unit which is configured to initiate a display of a chapter menu having selectable menu items. Further, the control unit is configured to initiate a reproduction of a chapter of the video information upon selection of the dedicated menu item. The reproduction device is configured to generate attributes of the chapters which are indicative to a respective one of the chapters and to generate a display diagram of the attributes. This diagram may be displayed in the chapter menu.
摘要:
A method for selection of shots represented by identifiers displayed in a navigation menu. A document is divided into shots. Several attributes such as the moment of appearance of the shot in the document are assigned to each shot. The navigation menu disposes the identifiers according to a first axis according to the moment of appearance of the associated shot and according to a second axis according to the value of a second attribute according to a criterion other than the moment of appearance. A third attribute is determined for each shot according to a criterion other than the two first criteria, the shot identifiers having the same value as this third attribute are connected graphically. In this way the user perceives the value of several attributes associated with each shot and can easily select the shot that interests him. A display device able to display the navigation menu.
摘要:
Communication method between a primary network (110) and a secondary network (24), the secondary network comprising a plurality of remote stations (210 to 230) and having transmission capacities lower than the transmission capacities of the primary network, a base station (20) enabling data transmissions between the primary and secondary networks.In order to guarantee a quality of service, the method comprises: a creation of at least one virtual wireless channel (21 to 23), associated with the secondary network with configurable channel parameters, and a routing of the data that transits by said base station to be transmitted to the secondary network according to the virtual channel or channels created. each virtual channel enabling a point-to-point link between the base station and a station of said plurality.