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Ayoub

Ayoub Massoudi, Rennes FR

Patent application numberDescriptionPublished
20080317278Method for Computing a Fingerprint of a Video Sequence - The invention concerns a method for computing a fingerprint of a video sequence. The method comprises the steps of—Computation of a visual digest for each frame of the video, —Computation of the distance between the visual digest of each frame of the video in order to detect shots, —Detection, for each detected shot of the video, of a frame, called stable frame, having the smallest content variation of the shot, —Calculation of a local fingerprint for said stable frame.12-25-2008

Ayoub Massoudi, Issy Les Moupineaux AM

Patent application numberDescriptionPublished
20110119480METHODS AND APPARATUSES FOR SELECTIVE DATA ENCRYPTION - A method of encryption, using an encryption key K with key length k, of at least one message M comprising uniformly distributed symbols, k bits are encrypted of messages at least k bits long, while shorter messages are lengthened, e.g. by padding or concatenation, to obtain a lengthened message at least k bits long before encryption. The encryption efficiency is thus optimized while the encryption security is retained. The encryption method is particularly suitable for JPEG2000 encoded packets comprising a message M. Also provided are an encryption apparatus, a decryption method and a decryption apparatus.05-19-2011

Ayoub Massoudi, Moulineaux FR

Patent application numberDescriptionPublished
20110228930METHOD AND DEVICE FOR KEY GENERATION - A method of generating a segment key KSmt from a given basic key KmT and a given modification key K′09-22-2011

Ayoub Massoudi, Issy Les Moullneaux FR

Patent application numberDescriptionPublished
20120063595METHOD AND APPARATUS FOR SELECTIVE DATA ENCRYPTION - A layered audiovisual packet data stream, such as one obtained by a JPEG2000 encoder, is received together with information (metadata) about the contribution of each packet to the reduction of image distortion. The distortion-to-rate ratio for each packet is calculated and the packets are ordered in descending ratio. The non-encrypted packet having the highest ratio is encrypted until the target distortion is obtained. Also provided is an apparatus. In a variant, the data in the packets are substituted by dummy data instead of encrypted.03-15-2012

Ayoub Rashtchian, Gaithersburg, MD US

Patent application numberDescriptionPublished
20090092990PRIMERS AND METHODS FOR THE DETECTION AND DISCRIMINATION OF NUCLEIC ACIDS - The present invention provides novel primers and methods for the detection of specific nucleic acid sequences. The primers and methods of the invention are useful in a wide variety of molecular biology applications and are particularly useful in allele specific PCR.04-09-2009
20090233283STABLE COMPOSITIONS FOR NUCLEIC ACID AMPLIFICATION AND SEQUENCING - The present invention is directed to compositions comprising mixtures of reagents, including thermostable enzymes (e.g., thermostable DNA polymerases), buffers, cofactors and other components, suitable for immediate use in nucleic acid amplification or sequencing techniques without dilution or addition of further components. The compositions contain no stabilizing agents (e.g., glycerol or serum albumin) and unexpectedly maintain activity for extended periods of time upon storage at temperatures above freezing. These compositions are useful, alone or in the form of kits, for nucleic acid amplification (e.g., by the Polymerase Chain Reaction) and sequencing (e.g., by dideoxy or “Sanger” sequencing), or for any procedure utilizing thermostable DNA polymerases in a variety of medical, forensic and agricultural applications. In particular, the compositions and methods are useful for amplifying and sequencing nucleic acid molecules that are larger than about 7 kilobases in size.09-17-2009
20100233699PRIMERS AND METHODS FOR THE DETECTION AND DISCRIMINATION OF NUCLEIC ACIDS - The present invention provides novel primers and methods for the detection of specific nucleic acid sequences. The primers and methods of the invention are useful in a wide variety of molecular biology applications and are particularly useful in allele specific PCR.09-16-2010
20100297709Methods for enrichment of selected RNA molecules - Improved methods of studying RNA molecules are provided. In particular, methods of treating mixtures of RNA molecules so as to enrich the mixture for a desired type of RNA molecule are provided. For example, the methods permit depletion of mRNA from complex mixtures to facilitate study of microRNAs in the mixture.11-25-2010
20110143350PRIMERS AND METHODS FOR THE DETECTION AND DISCRIMINATION OF NUCLEIC ACIDS - The present invention provides novel primers and methods for the detection of specific nucleic acid sequences. The primers and methods of the invention are useful in a wide variety of molecular biology applications and are particularly useful in allele specific PCR.06-16-2011
20110151520Compositions and methods for cDNA synthesis - Methods for making cDNA molecules, for amplification of RNA by PCR and for preparation of cDNA libraries are provided. Kits for making cDNA molecules also are provided.06-23-2011
20110217735COMPOSITIONS AND METHODS FOR REVERSE TRANSCRIPTASE-POLYMERASE CHAIN REACTION (RT-PCR) - The present invention is directed to compositions and methods useful for the amplification of nucleic acid molecules by reverse transcriptase-polymerase chain reaction (RT-PCR). Specifically, the invention provides compositions and methods for the amplification of nucleic acid molecules in a simplified one- or two-step RT-PCR procedure using combinations of reverse transcriptase and thermostable DNA polymerase enzymes in conjunction with sulfur-containing molecules or acetate-containing molecules (or combinations of such sulfur-containing molecules and acetate-containing molecules), and optionally bovine serum albumin. The invention thus facilitates the rapid and efficient amplification of nucleic acid molecules and the detection and quantitation of RNA molecules. The invention also is useful in the rapid production and amplification of cDNAs which may be used for a variety of industrial, medical and forensic purposes.09-08-2011

Patent applications by Ayoub Rashtchian, Gaithersburg, MD US