This article introduces the principle , interface and performance parameters of the led display driver module ; puts up a method of screen division and grayscale display ; picks - up some parameters to decribe the scan algorithm ; clarifies the relationship between scan parameters , the design ratio of the screen and the driver module performance parameters ; and formulates three principles in led display design 摘要介紹了led顯示屏驅(qū)動(dòng)控制模塊的原理、接口和性能參數(shù),提出顯示屏的屏體分塊方法和灰度顯示方法,提取了用于顯示屏設(shè)計(jì)中驅(qū)動(dòng)控制方式的若干算法參數(shù),分析并闡明了這些算法參數(shù)、顯示屏設(shè)計(jì)要求及驅(qū)動(dòng)模塊的性能指標(biāo)三者之間的關(guān)系,并提出了三個(gè)設(shè)計(jì)約束關(guān)系式,從而擬定了顯示屏的驅(qū)動(dòng)控制方式。
So the plate - like drawing correcting process can be divided into two stages : absolute errors checking and comparative errors checking absolute errors checking include four modules which were line - weight checking , hatch checking . dimension checking and overlapped line checking comparative errors checking module include drawing compartmentalization , view recognizing , data getting and data compare in this correction system , line - scanning and circle - scanning algorithm , direct graphics element compare algorithm and character compare are used , which simplify the process and reduce difficulties 相對(duì)錯(cuò)誤檢查包括區(qū)域劃分、視圖識(shí)別、數(shù)據(jù)提取、數(shù)據(jù)提取等過(guò)程。相對(duì)錯(cuò)誤的判斷依據(jù)是答案圖。本批改系統(tǒng)采用直線和圓弧掃描算法,并且結(jié)合圖形元素直接比較法和特征比較法,既簡(jiǎn)化了處理過(guò)程,又降低了處理難度,比較圓滿地完成了開(kāi)題報(bào)告確立的任務(wù)。
The rapid prototyping algorithms were implemented by programming in ejb . the algorithms included the algorithm of choosing entity slicing layer thickness , the scanning algorithm of beeline parallel to x axis at first layer and beeline increasing by some angle and the area - scanning algorithm , etc . the general of the rapid prototyping software system based on j2ee was solved in the generals of system , module and application 在j2ee框架模型ejb組件中,編程實(shí)現(xiàn)了應(yīng)用層收縮率v對(duì)固定的鋪粉厚度和自適應(yīng)變鋪粉厚度進(jìn)行調(diào)整的兩種實(shí)體分層層厚選取算法;為了提高軟件的運(yùn)行效率,將整個(gè)三維數(shù)據(jù)源表按z向高度分成20份的切片處理算法;第一層平行于x軸每層比前層遞增一定角度的直線掃描算法和分區(qū)掃描等算法。