A 1.2-W single-chip MPEG2 MP%40ML video encoder LSI including widesearch range (H+/- 288, V:+/- 96) motion estimation and 81-MOPScontroller

• Published in: IEEE journal of solid-state circuits Vol. 33; no. 11; pp. 1765 - 1771
• Main Authors: Ogura, E, Takashima, M, Hiranaka, D, Ishikawa, T, Yanagita, Y, Suzuki, S, Fukuda, T, Ishii, T
• Format: Journal Article
• Language: English
• Published: 01.11.1998
• ISSN: 0018-9200
• DOI: 10.1109/4.726574

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 13.7x12.4 mm(2), 4.5-M transistor device using 0.4-mum CMOS technology dissipates 1.2 W at 3.3 V