編碼變換器 的英文怎麼說

中文拼音 [biānbiànhuàn]
編碼變換器 英文
code converter
  • : Ⅰ動詞1 (編織) weave; plait; braid 2 (組織; 排列) make a list; arrange in a list; organize; gr...
  • : Ⅰ名詞(表示數目的符號或用具) a sign or object indicating number; code Ⅱ量詞1 (指一件事或一類的...
  • : 動詞1. (給人東西同時從他那裡取得別的東西) exchange; barter; trade 2. (變換; 更換) change 3. (兌換) exchange; cash
  • : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
  • 編碼 : encoded; code; coded; encrypt; codogram; coding編碼表 encode table; 編碼程序 builder; 編碼尺 code...
  1. In the second chapter, wavelet theory, which is the theoretic basis of embedded zero wavelet coding is introduced briefly, including wavelet transform " s local characteristics, multi - resolution analysis, discrete signal ' s fast decomposition and construction, wavelet and filter group

    第二章,對小波零樹演算法的理論基礎? ?小波理論作了簡要的介紹,包括小波的時頻局部特性、多解析度分析、離散信號的快速分解與重構以及小波與濾波組的關系。
  2. At the aspect of hardware design, it adopts pulse distributor and the technology of single polar voltage drive to accomplish the function of controlling and driving stepmotor ; it adopts the technology of pulse width modulation and cmos h - bridge drive to accomplish the function of controlling and driving dc servomotor ; it adopts d / a convertor to accomplish the function of controlling ac transducer ; it adopts the technology of digital phase detection to accomplish the function of detecting the feedback position signal of induction phase shifter ; it adopts dsp ’ s capture cell to accomplish the function of detecting the feedback position signal of photoelectric coder

    硬體方面,採用脈沖分配和單極性電壓驅動技術實現了步進電機的控制和驅動功能;採用脈寬調制技術和cmos互補h橋驅動技術實現了直流伺服電機的控制和驅動功能;採用d / a轉實現了交流的控制功能;採用數字化相位檢測技術實現了感應移相位置反饋信號的檢測功能;採用dsp的捕獲單元實現了光電位置反饋信號的檢測功能。
  3. According to the request of this subject, we have developed the system hardware and software for the slave device and the inspection software running on the pc. in this paper all of the followings is illustrated detailedly, such as the research on the principles of measurement and its realization, three means of water - level measurement that are separately based on photo electricity coder, pressure sensor and potentiometer ; selection of the microchip, we choose an advanced integrated soc ( system on chip ) microchip c8051f021 as the main controller ; realization of signal sampling, processing and its conversion in the mcu ; application of high precision 16 bits adc cmos chip - - ad7705 in our system, designing its interface with the microchip and relevant program ; using a trickle charge timekeeping chip ds1302 in the system which can provide time norm and designing of its i / o interface and program ; additionally, a 4 ~ 20ma current output channel to provide system check - up using ad421. in the system, ad421, ad7705 and the microchip compose spi bus ; to communicate with the master pc, here we use two ways which are separately rs232 and rs485 ; moreover, there are alarm unit, keyboard unit, power supply inspection unit and voltage norm providing unit in the system

    針對研製任務的要求,課題期間研製了下位機系統硬體和軟體,開發了上位機監控軟體,其中所作的具體工作包括:測量原理的研究和在系統中的實現,在本次設計中用三種方法來進行水位測量,分別是旋轉法、液位壓力傳感法和可電阻法;主控晶元的選擇,我們選用了高集成度的混合信號系統級晶元c8051f021 ;實現了信號的採集和處理,包括信號的轉和在單片機內的運算;高集成度16位模數轉晶元ad7705在系統中的應用,我們完成了它與單片機的介面設計及程序制任務;精確時鐘晶元ds1302在系統中的應用,在此,我們實現了用單片機的i o口與ds1302的連接和在軟體中對時序的模擬,該晶元的應用給整臺儀提供了時間基準,方便了儀的使用;另外,針對研製任務的要求,還給系統加上了一路4 20ma模擬信號電流環的輸出電路來提供系統監測,該部分的實現是通過採用ad421晶元來完成的,本設計中完成了ad421與單片機的spi介面任務,協調了它與ad7705晶元和單片機共同構成的spi總線系統的關系,並完成了程序設計;與上位機的通信介面設計,該部分通過兩種方法實現: rs232通信方式和rs485通信方式;系統設計方面還包括報警電路設計、操作鍵盤設計、電源監控電路設計、電壓基準電路的設計。
  4. The characteristic of h. 264 standard can be concluded mainly into three aspects. it is more practicable, more adaptive to ip net and mobile system and it improves the key components of coding structure based on hybrid video coding framework. for example, it adds coding mode decision, multi frame prediction, context - based adaptive variable length coding ( cavlc ), 4x4 integer transform, loopfilter, etc. the improvement in performance leads to higher computational complexity in the new standard

    H . 264的技術特點可以歸納為三個方面,一是注重實用;二是注重對移動和ip網路的適應;三是在混合的基本框架下,對其主要關鍵部件都做了重大改進,如多模式運動估計、幀內預測、多幀預測、基於內容的、 4 4二維整數等。
  5. Further, in the encoder when the incoming block is intercoded, an algorithm is applied to predict which dct coefficients may become zero after a subsequent quantization operation, and only dct coefficients that may not become zero are computed in performing the dct

    再者,在該中,當輸入區塊是交互模式,則應用一種計算方法來預測經由后續的量化運算后那一些離散餘弦轉系數可能為零,而只有那些可能不會為零的離散餘弦轉系數會用在執行離散餘弦轉的計算中。
  6. ( 3 ) study deeply the structure of fat 16 file system and the characteristic of flash disk, and develop the file management software of flash disk to manage nc files effectively according to the management idea of fat 16 file system. ( 4 ) research the module and protocol of reliable communication in serial network, which are composed of arm main control board, dsp motion control board, keyboard board, i / o control board and encoder signal collection board, and then develop communication software of the serial network. ( 5 ) study the principle of displaying char in lcd and the method of embedding font library into operating system, and research deeply the method of embedding chinese font library into os in the light of the characteristic of chinese

    本論文的主要研究內容如下: ( 1 )研究uc os -實時嵌入式操作系統在硬體平臺上的移植及其佔先式內核的任務調度原理,合理分割銑床控制系統的管理任務,根據任務的要求賦予不同的優先級和調度時間,保證任務的執行效率和實時性; ( 2 )開發底層設備驅動程序和應用程序介面( api )函數,以便於進行系統應用軟體的開發; ( 3 )深入研究fat16文件系統的結構和固態盤的硬體特性,參照fat16文件系統的管理思路,開發固態盤文件管理軟體以有效管理nc代文件; ( 4 )深入研究由arm主控板、鍵盤板、 i o控制板、信號採集板等裝置組成的串口通訊網路可靠通信的模型及其通訊協議,開發串口通訊網路通信軟體; ( 5 )研究字元的顯示原理和在操作系統中嵌入字庫的方法,在此基礎上結合漢字的特性深入研究中文字庫的嵌入方法,開發中文字庫嵌入軟體,滿足開發操作界面的信息要求; ( 6 )深入研究三維圖形坐標的原理,開發實用的三維加工軌跡顯示軟體,便於操作者對零件的加工過程進行監控和診斷。
  7. This paper also present a method that reduces the computational requirements of the encoder, while still upholding picture fidelity and remaining compatible with the h. 263 bitstream standard. often a substantial number of inter - macroblocks in the encoder are reduced to all - zero values after quantization. we introduced a method of predicting when those macrobolcks will quantize to zeros, which in turn allows us to eliminate the computation that would normally be required for those macroblocks

    中宏塊經過dct和量化后,總有一定數量的宏塊的系數全為零,因此在進行dct轉前先進行預測,將那些預測系數全為零的宏塊提前查找出來,然後將系數全為零的宏塊azq ( all - zeroquantizedcoefficients )直接送到熵模塊進行可
  8. First the survey of video encoding development has been conducted, then the video compression technology has been introduced and the application of fpga and dsp processor in video compression field is appended, finally the hardware implementation of video compressor based on h. 263 standard is introduced. according to the characteristic of fpga, we bring forward the motion estimate and dct / idct arith metic which can be easily implemented in hardware

    首先介紹了視頻壓縮發展的概況;然後介紹基於的視頻壓縮方法,並介紹fpga和dsp處理在視頻壓縮中的應用;最後介紹了基於h . 263標準的視頻壓縮硬體實現,並根據fpga的特點,提出適合其實現的運動估值演算法和dct和idct演算法。
  9. The standard is designed to give a new technical solution for a broad range of applications, such as very low bit rate conversational services and entertainment quality broadcast, interactive video - on - demand services etc. for the enhancement of the coding efficiencies, the new standard adopts new tools as following : multiple reference pictures, variable block - size with seven block sizes in motion prediction, quarter - pixel accuracy for motion vector, short word - length integer transform, context - adaptive entropy coding and loop filter deblocking

    H . 264 / avc標準支持從低帶寬、高誤率的無線移動視頻通信到高帶寬、低誤率的有線視頻廣播等多種應用,因此,日益受到業界的關注。為了實現更高的效率, h . 264 / avc標準採用了很多新的技術,如多參考幀預測、多尺寸塊模式、 1 / 4像素精度運動矢量、整數量化、基於內容的熵、新型幀內預測、去除方塊效應的濾波等。
  10. But now, mpeg2 ' s compressing and decompressing algorithms and mechanism is inviable to mapc - ca ' s architecture, the hardware can not efficiently work. aim at these mostly questions of mpeg2 ' s real - time handling, mpeg2 ' s video coding and decoding system based on map - ca have been implemented. mpeg2 ' s key algorithms have been improved

    針對mpeg2實時處理中面臨的主要問題,課題基於mapca實現了mpeg2實時系統;改進了mpeg2關鍵演算法,提出了新的實現方法,如量化反量化演算法, dctidct演算法,運動估計演算法等;利用datastreamerdma控制進行數據傳輸,最大限度地減少數據等待時間。
  11. The survey of vidio compressed coding is introduced in this paper at first. then the vidio compressed method based on transform coding and the content of mpeg - 2 standard are presented. the hardware realization method of mpeg - 2 vidio compressed decoder is given in detail

    本文首先介紹視頻壓縮發展的概況;然後介紹基於的視頻壓縮方法,並簡要闡述mpeg - 2標準的內容;隨后給出了一種基於專用晶元的mpeg - 2視頻壓縮硬體實現方法。
  12. The signals of multi - channel sensor at measuring spot were processed and translated by signal encoding technology to fuse into a baseband signal and then the signal was transmitted directly or in frequency - hand mode

    該方法利用信號技術對測控現場的多路傳感信號進行處理和,使其融合為一路基帶信號后,或直接以基帶傳輸或以頻帶傳輸。
  13. Zh - transformed data are reorganised into binary bitmaps and coded with cae encoder, now cae encoder can predict the next bit more precisely according to the bits have been coded, so coding efficiency of cae encoder is improved

    經過zh,算術可以利用已經的數據更準確的預測下一位要的數據,因此算術的效率得到了提高。
  14. This paper first research on main technologies used by avs standard, which include prediction, transform, quantization, in - loop filter, and entropy encoding, and then focus on the 2d - vlc entropy coder of avs, which is context - based adaptive coder. this encoder operates on run - level pair, and it uses the type of current block and value of current coefficients to switch vlc code - table. these tables are designed according to the distribution of transformed coefficients, and this way is much better than using only one table to code all residual coefficients in one 8x8 block

    本文首先詳細研究了avs標準的核心技術,包括預測量化、環路濾波以及掃描和熵等,之後重點研究了avs標準中使用的基於上下文的2d - vlc方法,這種方法的是( run , level )數對,同時根據當前塊的類型和殘差系數這兩種上下文信息來切表,這些表是預先根據系數在不同位置的分佈信息設計好的,這樣要比只使用一個表來塊內所有位置上的殘差系數的壓縮效果要好得多。
  15. This method can maintain the superiority of traditional wavelet transform to effectively remove temporal redundancy. in addition, owing to the feather of the integer form of wavelet lifting scheme, the computational complexity and memory requirement are reduced, which can enhance the performance of the wavelet video coding system

    該方法能夠保持傳統小波的優勢,高效的去除時域冗餘信息,同時通過提升小波的整型能夠快速實現的特點,降低了計算復雜度,減小了內存需求,提高了小波視頻的性能。
  16. In this paper, two important modifications in dct - based coding algorithm are suggested after making deep study on the generally used scheme of h. 263 coder. first, we find plenty of invalid computation in the transformation part of the h. 263 coder and an improved scheme based on the pre - transform decision to avoid invalid computation is proposed. second, in the motion estimation part of the coder, we find that normal search algorithms are not effective, which neglects different levels of motion in image sequences, and we suggest a new search algorithm which has variable search region based on the difference of motion level. combining the pre - transform decision scheme with variable search region method in motion estimation, a global decision coding scheme is provided, which greatly increases the coding speed of h. 263 coder

    本文對h . 263演算法的現有實現方法作了深入的分析,首先發現部分存在大量無效運算,提出了在前加判決的前判決的方案,以壓縮無效的運算;其次發現運動估計部分由於忽略了圖像場景的分級運動而存在一定的無效搜索運算,提出了基於分級運動的可搜索域法來壓縮無效的搜索運算;最後將前判決方案與運動估計的可搜索域法有機地結合在一起,提出了全局判決方案,從而比較全面地改進了現有實現方法,因而能大幅度地提高速度
  17. With the theory of wavelet transform and reversible integer - to - integer wavelet transforms based on shifting frame used in image / video compression field introduced, a new real - time implement of speck algorithm using dsp chip is provided. then the technology of motion estimation and motion compensation is discussed and an adaptive technique for the wavelet video codec to reduce the " block artifact " is presented. and the implement of the wavelet video compression system using adv611 chip is discussed next with the performance emulation result

    在系統討論了小波理論在圖像視頻壓縮領域的應用后,結合dsp技術提出一種基於dsp應用的實時低存儲需求的改進speck圖像;隨后探討基於小波的實時視頻的實現,在論述運動估計與補償技術的基礎上,針對應用空域運動估計補償技術的低比特率小波視頻提出一種自適應消除塊效應的技術;並討論了基於adv611晶元的視頻壓縮系統的壓縮性能;最後提出一種基於dsp平臺具有極低時延的小波視頻混合方案,對該方案的壓縮性能進行了討論並給出初步的硬體實現方案。
  18. Additionally, the underway researches on producing coder and decoder in a ternary optical computer as well as group - signal converter for realization system of ternary optical fiber communication were introduced in this thesis. some experiments done by others were quoted to prove the ternary optical computer theory

    論文還介紹了正在進行三值光計算機、解的製作研究,和正在進行的三值光纖通信實現系統的信號成組的製作研究,以及可以佐證三值光計算機理論的他人的實驗工作。
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