ETAT FRANCAIS, MINISTERE DES PTT (CENTRE NATIONAL D'ETUDES DES TELECOMMUNICATIONS)
Patent Owner
Stats
- 4 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Dec 28, 1993 most recent publication
Details
- 4 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 881 Total Citation Count
- Dec 19, 1990 Earliest Filing
- 1 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
Rank in Class
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
5274629 Method for the broadcasting of digital data, notably for radio broadcasting at high bit rate towards mobile receivers, with time-frequency interlacing and coherent demodulationJan 31, 91Dec 28, 93[H04J]
5228025 Method for the broadcasting of digital data, notably for radio broadcasting at a high bit-rate towards mobile receivers, with time-frequency interlacing and assistance in the acquisition of automatic frequency control, and corresponding receiverJan 31, 91Jul 13, 93[H04J]
5196933 Encoding and transmission method with at least two levels of quality of digital pictures belonging to a sequence of pictures, and corresponding devicesMar 19, 91Mar 23, 93[H04N]
5197061 Device for the transmission of digital data with at least two levels of protection and corresponding reception deviceMar 19, 91Mar 23, 93[H04J]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
5235415 Device for the intelligible consultation of data relating to the fees programs of a subscription television and/or radio serviceExpiredDec 19, 90Aug 10, 93[H04N]
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