??? SH-Mobile3是應(yīng)用處理器,用于下一代高檔移動(dòng)電話。在SH-Mobile3中納入了一個(gè)此處理性能優(yōu)異的32位RISC(精減指令系統(tǒng)電腦)CPU芯核、2D/3D圖形引擎以及全部由硬件組成的MPEG-4加速器,能夠很容易地處理各種先進(jìn)的多媒體應(yīng)用。
??? SH-Mobile 3的主要特點(diǎn)如下。
??? (1)?新的CPU芯核SH4AL-DSP的性能大約是以前各種型號(hào)的瑞薩科技產(chǎn)品的2.3倍。
??? 在SH-Mobile3中納入了新研制的CPU芯核SH4AL-DSP,當(dāng)它工作在最高頻率216 MHz時(shí),處理速度達(dá)到389 MIPS(每秒處理389百萬條指令)。這大約是現(xiàn)有的SH-Mobile系列的最高速處理速度173 MIPS(在工作頻率為133 MHz時(shí))的2.3倍。由于SH-Mobile3的處理速度這么高,它能夠很容易地并行處理工作量很大的多個(gè)應(yīng)用,并且可以使用Linux *2等通用操作系統(tǒng),處理工作量高于專用操作系統(tǒng)。SH4AL-DSP的指令系統(tǒng)與現(xiàn)有的CPU芯核SH3-DSP向上兼容,因而可以使用現(xiàn)有的程序并縮短系統(tǒng)的開發(fā)時(shí)間。
??? (2)?支持3百萬像素照相機(jī)模組以及圖像處理功能
??? 在SH-Mobile3中有一個(gè)照相機(jī)接口,可以直接地連接到3百萬像素的照相機(jī)模組上。這樣有可能高速捕捉高分辨率照相機(jī)的大量圖像數(shù)據(jù),并且實(shí)現(xiàn)各種顯示功能,例如電子縮放顯示,以及利用OSD(在屏幕上顯示)和HWC(用硬件實(shí)現(xiàn)的游標(biāo))等功能在屏幕上實(shí)現(xiàn)重疊顯示。SH-Mobile3也備有視頻輸出部件,這樣有可能把移動(dòng)電話系統(tǒng)連接到電視機(jī)上,并且顯示用照相機(jī)拍攝的運(yùn)動(dòng)圖像。
??? (3)?由2D/3D圖形引擎和MPEG-4硬件加速器進(jìn)行運(yùn)動(dòng)圖像處理
??? 它使用英國Imagination Technologies 股份有限公司(IMG)的PowerVR ? *3 MBX Lite IP作為2D/3D圖形引擎,高速度地顯示真實(shí)的高質(zhì)素2D/3D圖像,因而可以實(shí)現(xiàn)游戲這些復(fù)雜的應(yīng)用。此外,全部用硬件實(shí)現(xiàn)的MPEG-4加速器具備處理高質(zhì)素圖像的能力,可以滿足視像郵件和視像電話的需要。
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