DECODING DEVICE FOR SIGNALS REPRESENTATIVE OF A PICTURE SEQUENCE AND HIGH DEFINITION TELEVISION IMAGE TRANSMISSION SYSTEM THAT INCLUDES SUCH A DEVICE.

摘要

IN A HIGH DEFINITION IMAGE TRANSMISSION SYSTEM, WHICH INCLUDES A LEVEL OF EMISSION OF CODED INFORMATION, REPRESENTATIVE OF SUCH IMAGES AND, AFTER THE TRANSMISSION OF THESE INFORMATION TO A FREQUENCY OF A DETERMINED FRAME AND THROUGH A FIRST BAND CHANNEL LIMITED, A LEVEL OF RECEIPT OF TRANSMITTED INFORMATION. THE ISSUANCE LEVEL INCLUDES IN IT AN IMAGE CODING DEVICE FOR THREE WAYS OF PARALLEL TREATMENT WITH SELECTION, TO TRANSMIT THREE DIFFERENT TRANSMISSION RATES, FROM ONE TO ANOTHER THREE WAYS ACCORDING TO THE EXIT SIGNAL OF A CIRCUIT , AND A DECODING DEVICE FOR SUCH CODED INFORMATION. IT IS CHARACTERIZED BECAUSE IT INCLUDES THREE BRANCHES OF TREATMENT (1701,1702,1703), SITUATED IN PARALLEL AND EACH ONE RECEIVES THE SERIES OF SUCH INFORMATION CODED, AND A CIRCUIT (1740) OF CHANGE OF DEPARTURES OF SUCH BRANCHES ACCORDING TO THE SIGNAL OF EXIT FROM THE DECISION CIRCUIT TRANSMITTED TO THE DECODING DEVICE THROUGH A SECOND CHANNEL, CALLED FOR NUMERICAL ASSISTANCE; SUCH BRANCHES MAINLY INCLUDE, IN SERIES, A DYNAMIC INTERPOLATION CIRCUIT (1711,1721,1731) AND A SPECIAL FILTERING CIRCUIT (1714,1724,1736); THE SECOND BRANCH ALSO INCLUDES, IN SERIES, AN IMAGE RECONSTITUTION CIRCUIT FROM THE CODED INFORMATION TRANSMITTED AND THE REPRESENTATIVE INFORMATION OF THE MOVEMENT OF ORIGIN IMAGES.