Data processing apparatus, the method and coding apparatus

Details Data processing apparatus, the method and coding apparatus Data processing apparatus, the method and coding apparatus

2011-04-26

2011-04-26

Ahmed, Samir A (Department: 2624)

Image analysis

Image compression or coding

Adaptive coding

C382S232000, C375S240030

Reexamination Certificate

active

07933459

ABSTRACT:
From an MPEG image data (S11), an MPEG2 encoder circuit (51) extracts a quantum scale (Qm) of each macro block (MB) which has been used for quantization of the MPEG2 in the encoding process. An activity calculation circuit (53) calculates an activity (Nact), based on the quantum scale (Qm), A rate control circuit (54) calculates a quantization parameter (QP) for each macro block (MB), based on the activity (Nact).

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