携帯電話向け画像処理LSI:Milbeaut Mobile



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LSI Image Signal Processing LSI for Phones: あ ら ま し PC LSIISP Image Signal Processor LSI Abstract Camera functions of mobile phones represented by smartphones have been rapidly evolving in recent years and now offer features such as a large number of pixels, high image quality, and full high-definition video recording and replay. So that the user can quickly take photographs or videos and view them on PCs and mobile devices, these features can be offered with the camera functions integrated into an application processor of a mobile phone handset. However, aiming to give high-end models an image quality and performance comparable to those of compact digital cameras, many customers have adopted an image signal processor (ISP), an LSI exclusively for processing images. This paper presents the history and performance of, an image Signal processing LSI developed by Fujitsu for mobile phones. 368 FUJITSU. 63, 4, p. 368-373 07, 2012

LSI ま え が き 2000 ISP Image Signal Processor 2003 ISP -LSI MBG046 の 変 遷 ISP 図 -12008 CAF Continuous AF 1980 1080 pixelcaf3d ISP 画 像 パイプライン 処 理 アーキテクチャ 図 -2 PC SDRAM CPU IP HDR High Dynamic Range の 機 能 概 要 MBG046 2008 2009 2010 2011 2012 3D CAF WDR CAF 3D 3 4 5 6 MBG046-1 FUJITSU. 63, 4 07, 2012 369

LSI MBG046 I/F Pre Process AE/AF/AWB Color Process Demosaic CSC JPEG Codec MIPI CSI I/F YUV I/F MIPI I/F YUV I/F I/F I 2 C I/F SIO/SPI I 2 C PWM UDC GPIO DMAC EXT INT CPU ARM SDRAM / -2 MBG046 ISP 高 速 画 像 処 理 -2LSI 8 M27 fps 60 fps Pre Process 強 力 なノイズリダクション MBG046 画 像 処 理 の 高 速 化 -2 SDRAM 11 ソフトウェア 構 成 MBG046 図 -3 370 FUJITSU. 63, 4 07, 2012

LSI HostI/F 3A AWB/AE/AF IP OS:µITRON -3 3A Auto White Balance Auto Exposure Auto Focus 3A CPUIP の3D 処 理 機 能 3D 図 -4 3D ISP ISP ISP 3D ISP3D 3D 幾 何 補 正 と 視 差 補 正 3D ISP 3D 3D 3D 動 画 処 理 フロー MBG0463D 図 -5 FUJITSU. 63, 4 07, 2012 371

LSI 3D 3D MBG046 MBG046-4 3D 2 MBG046 3D TV 30 fps -5 MBG0463D 1 30 fps 3D 3D 表 示 用 フォーマット 変 換 3D 372 FUJITSU. 63, 4 07, 2012

LSI 3D MBG0462 ISP 3D 3D む す び LSI 2 3D LSI LSI 著 者 紹 介 小 松 悟 (こまつ さとる) LSI 大 川 章 (おおかわ あきら) AV LSI 木 村 光 麿 (きむら みつまろ) AV LSI 宮 下 秀 昭 (みやした ひであき) AV LSI FUJITSU. 63, 4 07, 2012 373