H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 7/26 (2006.01) G06T 9/00 (2006.01) H04N 7/50 (2006.01) H04H 1/00 (2006.01) H04N 7/58 (2006.01)
Patent
CA 2264392
A device for controlling image encoding, with which target code rates suitable for respective program data can be allocated by using a statistical multiplex technique. A controller (3) receives the encoding difficulties (Di) of programs from image encoders (2i) and calculates temporary bit rates (Tmp_Ratei) in accordance with the encoding difficulties (Di) and the conversion formula of the bit rate. Further, the controller (3) corrects the temporary bit rates (Tmp_Ratei) so that the summation of target bit rates (Target_Ratei) may be within a predetermined allowable value and determines final target bit rates (Target_Ratei) and supply them to the respective image encoders (2i).
L'invention porte sur un dispositif de commande de codage d'images, ainsi que sur les débits de code cibles appropriés aux données de programme respectives pouvant être attribuées au moyen d'une technique de multiplexage statistique. Un contrôleur (3) reçoit des codeurs (2i) d'images les difficultés (Di) de codage des programmes et calcule les débits binaires provisoires (Tmp_Ratei) conformément aux difficultés (Di) de codage et à la formule de conversion du débit binaire. De plus, le contrôleur (3) corrige les débits binaires provisoires (Tmp_Ratei) de sorte que la somme des débits binaires cibles (Target_Ratei) soit comprise dans une valeur admissible prédéfinie et détermine les débits binaires cibles terminaux (Target_Ratei) et les envoie aux codeurs (2i) d'images respectifs.
Kitamura Takuya
Mihara Kanji
Gowling Lafleur Henderson Llp
Sony Corporation
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