High degree of encryption the card can monitor single step interrupt and breakpoint interrupt through hardware so as to recognize and intercept various debug attempts . through hardware algorithm , the card restores the encrypted software . but the hardware algorithm cannot be tracked 加密度較高加密卡通過(guò)硬件監(jiān)控單步中斷和斷點(diǎn)中斷,從而識(shí)別和截獲各種跟蹤解密企圖;加密卡通過(guò)卡上的硬件算法來(lái)對(duì)加密軟件進(jìn)行還原,而硬件算法是無(wú)法跟蹤的
As a research trial for this thesis , we designed a real circuit based on cpld ( complex programmable logic device ) by vhdl ( very high speed integrated circuit hardware description l anguage ) for the hardware algorithm for euclidean distance transform with multilayer design method , called top - to - down 一down )的方法,設(shè)計(jì)了一個(gè)基于復(fù)雜可編程邏輯器件cpld ( co哪lexprogammablelogiedeviee )的基本電路,用以驗(yàn)證基于硬件的歐幾里德距離轉(zhuǎn)換算法的各項(xiàng)性能。
In order to develop and evaluate the real time algorithm and the hardware processor of infrared imaging guidance , the evaluation system was designed . in this paper , the operation and the control structure of the infrared imaging guidance algorithm were analyzed , and the image capturing , the image display , the development of application specific hardware algorithm and the requirement of dsp 設(shè)計(jì)評(píng)估系統(tǒng)的目的是為了對(duì)紅外成像制導(dǎo)的實(shí)時(shí)處理算法和硬件處理單元進(jìn)行前期的開發(fā)和評(píng)估。本文分析了紅外成像制導(dǎo)算法的運(yùn)算和控制結(jié)構(gòu),歸納總結(jié)了評(píng)估系統(tǒng)在圖象獲取、顯示、專用硬件算法開發(fā)及dsp處理方面的需求。
Finally , with the step - by - step scheme , we implemented the fast hardware algorithm for euclidean distance transform based on two - dimension images . our design , compared with previous schemes , has these following advantages : ( 1 ) the calculation speed was accelerated from o ( n3 ) to o ( n2 ) , this make the implementation of euclidean distance transform possible 相比之下,本文所實(shí)現(xiàn)的基于硬件的歐幾里德轉(zhuǎn)換算法有以下優(yōu)點(diǎn):其一,在計(jì)算速度方面有很大提高,使其計(jì)算速度從o ( n ~ 3 )提高到o ( n ~ 2 ) ,從而使算法具有實(shí)用性。