TELEDIFFUSION DE FRANCE

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 13229
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 12435
 
  
 
H04J MULTIPLEX COMMUNICATION 9116
 
  
 
H03M CODING, DECODING OR CODE CONVERSION, IN GENERAL 6105
 
  
 
H04B TRANSMISSION 6204
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 6279
 
  
 
G06T IMAGE DATA PROCESSING OR GENERATION, IN GENERAL 4131
 
  
 
H04K SECRET COMMUNICATION; JAMMING OF COMMUNICATION454
 
  
 
G10L SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION 394
 
  
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 2196

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8606385 Method for qualitative evaluation of a digital audio signalAug 26, 11Dec 10, 13[G06F]
8239208 Spectral enhancing method and deviceApr 09, 10Aug 07, 12[G10L, G06F]
8036765 Method for qualitative evaluation of a digital audio signalJan 23, 03Oct 11, 11[G06F]
7742927 Spectral enhancing method and deviceApr 12, 01Jun 22, 10[G10L, G06F]
7609611 Method for transmitting an offset modulated biorthogonal multicarrier signal (BFDM/OM)Sep 29, 00Oct 27, 09[H04J]
7561601 Method for synchronizing digital signalsOct 19, 01Jul 14, 09[H04J]
7319727 Method for diversity reception of a multicarrier signal, receiver and corresponding systemJul 16, 02Jan 15, 08[H04B]
7272188 Distributed pilot multicarrier signal designed to limit interference affecting said pilotsSep 20, 01Sep 18, 07[H04L]
7120212 Device and method for receiving with at least two reception channels, and corresponding useNov 15, 99Oct 10, 06[H04B]
7109946 Hectometric wave transmission antennaJun 16, 03Sep 19, 06[H01Q]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7447288 Method for demodulating a signal integrating phase error effect and corresponding receiverExpiredMay 15, 02Nov 04, 08[H04L]
7146615 System for fast development of interactive applicationsExpiredJul 06, 00Dec 05, 06[G06F]
7003169 Variable transformation hierarchical image codingExpiredMay 22, 00Feb 21, 06[G06K]
6999629 Image coding/decoding methodExpiredMay 24, 00Feb 14, 06[G06K]
6963605 Method for estimating the motion between two digital images with management of mesh overturning and corresponding coding methodExpiredDec 07, 00Nov 08, 05[H04B]
6938064 Method for computing fast Fourier transform and inverse fast Fourier transformExpiredDec 07, 98Aug 30, 05[G06F]
6931155 Selective mesh refinementExpiredAug 03, 99Aug 16, 05[G06K]
6823010 Method for switching a first digital audio-visual program video component(s) on a second digital audio-visual program video component(s)ExpiredAug 13, 01Nov 23, 04[H04B]
2004/0103,433 Search method for audio-visual programmes or contents on an audio-visual flux containing tables of events distributed by a databaseAbandonedJul 15, 03May 27, 04[H04N, G06F]
6584068 Prototype signals construction for multicarrier transmissionExpiredAug 23, 99Jun 24, 03[H04J]
2003/0026,421 Method for transmitting data with digital watermark access control and devices thereforAbandonedAug 27, 02Feb 06, 03[H04N]
6324591 Method and device providing time synchronization between a processing unit and external meansExpiredJan 15, 99Nov 27, 01[G06F]
6211842 Antenna with continuous reflector for multiple reception of satelite beamsExpiredApr 28, 00Apr 03, 01[H01Q]
6078800 Method and device for reducing RF transmission interference and use thereof in an interactive television networkExpiredSep 25, 97Jun 20, 00[H04B]
6052702 Decision feedback filter device in the frequency domainExpiredJul 13, 98Apr 18, 00[G06F]
6011525 Variable helical antennaExpiredJun 26, 98Jan 04, 00[H01Q]
5875178 Digital signal organized in self-contained data containers, especially for data transmission to selective call receiversExpiredFeb 03, 97Feb 23, 99[H04J]
5867487 Method of automatic duplex or semi-duplex communication for two units via a telephone lineExpiredJun 29, 95Feb 02, 99[H04L, H04J]
5696902 System for management of the usage of data consultations in a telecommunication networkExpiredOct 03, 94Dec 09, 97[H01J]
5621792 Method and system of controlling the mode of access to signals, in particular picture signalsExpiredMar 15, 95Apr 15, 97[H04N]

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