Thomson-csf

Thomson Consumer Electronics Inc.

Thomson Multimedia S.a.

Charaf Hanna

Joseph Colineau

Michel Sonrier

Francedillaois Maurice

Michel Audoin

Francois Maurice

Mario De Vito

Etienne Cochon

Albert Dorner

Block interleaving and deinterleaving method and device therefor

Process for reading information

The object of the invention is a demultiplexing device. This device is characterized in that it comprises means for storing data of a multiplexed data stream (4), programmable means for storing data filters (8), comparison means (19) between the data of the multiplexed data stream and the data filters, and means (12) for transferring data of the multiplexed data stream to storage means (5) in relation to the comparisons made. The invention has a particular application in the field of digital television reception.

Demultiplexing device

System for recording/writing on a recording medium in which there are distributed, on the tracks, groups (G0) of tracks with positive continuous components and groups (G1) of tracks with negative continuous components. In reading, the values of the different signals are integrated for each track. Then, on the one hand, a first addition circuit S1 adds up the results of integration of the first tracks of each group of tracks and, secondly, a second addition circuit S2 adds up the results of integration of the last tracks of each group of tracks. A comparison circuit (CD) compares the results of additions of the two addition circuits to correct the track-following operation.

Information recording medium encoded to enable track following and

Information recording medium encoded to enable track following

Method and apparatus for preventing cross-talk during reproduction of

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Strasbourg, France

Charaf Hanna