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A 1.2-W single-chip MPEG2 MP@ML video encoder LSI including wide search range (H±288, V:±96) motion estimation and 81-MOPS controller

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8 Author(s)
Ogura, E. ; Media Processing Labs., Sony Corp., Tokyo, Japan ; Takashima, M. ; Hiranaka, D. ; Ishikawa, T.
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An MPEG2 MP@ML video encoder large-scale integrated circuit (LSI) has been developed including an 81 MOPS controller and motion estimator. By using two adaptive algorithms, a wide motion-estimation search area (±288 pixels horizontal and ±96 pixels vertical) was achieved with computation complexity of only 0.5% (20 GOPS) of full search block-matching algorithm. By using this expanded motion-estimation search area, there is a significant improvement in picture quality for coding fast motion sequences. The power consumption was reduced by using an efficient pipeline architecture and optimizing the circuitry, especially in the motion-estimation block and the data transfers for the external SDRAM. The 13.7×12.4 mm2, 4.5-M transistor device using 0.4-μm CMOS technology dissipates 1.2 W at 3.3 V

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Solid-State Circuits, IEEE Journal of  (Volume:33 ,  Issue: 11 )