Patent application number | Description | Published |
20100172379 | METHOD FOR SYNCHRONIZING A TRANSMISSION OF APPLICATIONS DATA FRAMES, CORRESPONDING SENDER AND RECEIVER DEVICES AND STORAGE MEANS - It is proposed a method for synchronizing a transmission of applications data frames provided to a sender device, the transmission being done between said sender device and at least one receiver device via a synchronous communications network implementing a clock that defines a network cycle. | 07-08-2010 |
20110286545 | METHOD FOR MANAGING A DATA TRANSMISSION FROM A SENDER DEVICE, CORRESPONDING COMPUTER-READABLE STORAGE MEDIUM AND SENDER DEVICE - A sending device receives applications data blocks to be transmitted to a receiving device according to a clock rate defined by transport periods, the applications data blocks being encoded before transmission by application of a first source encoding up to the processing of a change request. The sending device determines a drift between a number of applications data blocks received by the sending device and a number of applications data blocks transmitted after encoding by the sending device. The sending device determines, taking account of the determined drift, a transition applications data block from which a second source encoding is applied in response to the change request. The transmission of the stream is then adapted in such a way that the transmission of the encoded transition data block is aligned with a start of a transport period. | 11-24-2011 |
20130202025 | METHOD AND SYSTEM FOR TRANSMITTING VIDEO FRAME DATA TO REDUCE SLICE ERROR RATE - The present invention relates in general to video communication and streaming, and in particular, to transmitting video frame data over a communication network. A method of transmitting video frame data over a communication network comprises: obtaining a group of slices of a current video frame; assigning each of the slices to a channel of a plurality of channels reserved in a communication network; encoding each slice, based on channel characteristics of the channel to which it has been assigned, to obtain encoded data; packetizing the encoded data into encoded packets; and transmitting, over each of the reserved channels assigned to, the encoded packets comprising only encoded data of the corresponding assigned slice. This transmitting method reduces the slice error rate when transmitting several slices of a video frame over a communication network. | 08-08-2013 |
20140003367 | METHOD, DEVICE, COMPUTER PROGRAM AND INFORMATION STORAGE MEANS FOR OPTIMISING ACCESS TO A WIRELESS MEDIUM IN A COMMUNICATION NETWORK. | 01-02-2014 |
20150146648 | METHOD AND DEVICE FOR DATA COMMUNICATION IN A COMMUNICATION NETWORK - The present invention relates generally to communication networks and more specifically to methods and devices for data communication over a communication network. A method according to the invention comprises, at a transmitting node: obtaining a plurality of frames including first-type frames associated with an acknowledgment policy requiring acknowledgment and second-type frames associated with an acknowledgment policy requiring no acknowledgment; aggregating the frames of the obtained plurality of frames into an aggregated frame including at least one leading frame of second type and frames subsequent thereto, in an order depending on their associated acknowledgment policies; sending the aggregated frame to a receiving node; and sending an acknowledgment request frame to the receiving node to request it to acknowledge receipt of only subsequent frames of the aggregated frame. Such data communication scheme is liable to reduce bandwidth waste and head-of-line blocking and thus latency, compared to known scheme. | 05-28-2015 |
Patent application number | Description | Published |
20080283252 | SYSTEM AND METHOD FOR MULTI-ZONE WELL TREATMENT - A technique is provided for treating a plurality of well zones with a service tool during a single trip downhole. The service tool is run downhole to a selected well zone that is isolated for treatment. Following treatment of the well zone, the service tool is moved to a subsequent well zone isolated for treatment. When the lengths of the well zones to be treated are dissimilar, the active length of the service tool can be adjusted to correspond with the well zone length to optimize the well treatment operation. | 11-20-2008 |
20080314589 | SYSTEM AND METHOD FOR CREATING A GRAVEL PACK - A technique is provided for forming a gravel pack at a well zone. A completion assembly is positioned in a wellbore and cooperates with a service tool engaging the completion assembly. The completion assembly comprises a completion assembly central bore. A return is located radially outward of the central bore at a specific well zone or zones and comprises a flow path for returning a carrier fluid. The location of the return allows flow of the returning carrier fluid to remain outside of the completion assembly central bore at a specific well zone or zones. | 12-25-2008 |
20090078421 | SYSTEM AND METHOD FOR PERFORMING WELL TREATMENTS - A technique is provided for performing a well treatment operation. A completion assembly is constructed with a tubular member designed to maintain pressure integrity above a given well treatment zone. The completion assembly and a service tool can be moved downhole for well treatment operations in one or more well zones. A converter tool is utilized to selectively form openings through a wall of the tubular member to enable flow following completion of the well treatment in a lower zone. | 03-26-2009 |
20090095471 | MULTI-ZONE GRAVEL PACK SYSTEM WITH PIPE COUPLING AND INTEGRATED VALVE - Apparatus having a first outer tubular member and a first inner tubular member. The first outer tubular member and the first inner tubular member can define a first space therebetween. The first inner tubular member can have a first internal bore. The apparatus can further include a second outer tubular member and a second inner tubular member. The second outer tubular member and the second inner tubular member can define a second space therebetween. The second inner tubular member can have a second internal bore. A first coupling flowpath can be positioned between the first and second spaces. A second coupling flowpath can be positioned between the first and second internal bores. A selectively closeable flowpath can be positioned between the first coupling flowpath and the second coupling flowpath. | 04-16-2009 |
20090188674 | SYSTEM AND METHOD FOR PREVENTING BUCKLING DURING A GRAVEL PACKING OPERATION - A technique is provided for preventing buckling of a service tool assembly during a sand control operation in a wellbore. A completion assembly and a service tool assembly are positioned in a wellbore. An anti-buckling mechanism is positioned to limit the buckling load effects that can otherwise be experienced by the service tool assembly during the sand control operation. | 07-30-2009 |
Patent application number | Description | Published |
20080317100 | Method and Device for Blind Dehopping - A method and device are disclosed for real-time characterization of frequency-hopping networks, in which the signal to be characterized is converted into a digital signal and the frequency characteristics of the signal are determined. A frequency hop is sought for synchronization with the start of the transmission. The frequency is tracked and the central frequency Fc of the required transmission channel is sought. A delay is applied to the digitized samples during the tracking phase. The samples corresponding to the signal step are determined on the basis of the delayed samples and the identified central frequency. | 12-25-2008 |
20140321243 | DEVICE FOR DETECTING EVENTS - A multi-sensor device for detecting events, comprises first acquisition means comprising at least a first sensor, operating in a first frequency band and second acquisition means comprising at least a second sensor, operating in a second frequency band different from the first frequency band, means for processing raw data originating from the acquisition means and comprising means for the detection of events in the raw data and for determining the geographic location of said events, means for transmitting an alert if an event is detected by the processing means, means for storing the raw data, said storage means being suitable for restoring the stored raw data in a synchronized manner, and monitoring means which, following detection of an event in the raw data of one of said acquisition means, enables said processing means to be adapted to detect events in said stored raw data originating from said other acquisition means. | 10-30-2014 |