Recently , analog devices inc . developed a family of special video compressionldecotnpression chip based on wavelet transformation ~ ~ advxx 近年來(lái), analogdevices公司開發(fā)出一種基于小波變換的專用視頻壓縮解壓縮芯片? adv6xx系列。
Ad2s81a , r / d converter of analog devices inc . , is chosen to substitute for the velocity measuring dynamo to gain the speed feedback signal . it reduces the system dimension and improves the system reliability 選用美國(guó)模擬器件公司的r d轉(zhuǎn)換器ad2s81a代替測(cè)速發(fā)電機(jī)的功能獲得速度反饋信號(hào),減小了系統(tǒng)體積,提高了系統(tǒng)可靠性。
My primary task is studying a set ' of convenient , useful adsp21xx facility development system based on adsp21xx evaluate board provided by analog device inc . during the period of completing this dissertation , the following has been done 本課題的主要任務(wù)就是在美國(guó)模擬器件公司adsp21xx評(píng)價(jià)板的基礎(chǔ)上開發(fā)出的一套方便、實(shí)用的adsp21xx數(shù)字信號(hào)處理器簡(jiǎn)易開發(fā)系統(tǒng)。
Products of this kind of op - amp are available from many famous integrated circuits companies , such as ts185x series of stmicroelectronics , ad860x of analog device inc . , lt180x of linear technology corporation and so on 國(guó)外在這方面已經(jīng)有成熟產(chǎn)品,各大模擬電路芯片公司都推出了自己的相應(yīng)產(chǎn)品,如意法半導(dǎo)體的ts185x系列、 ad公司的ad860x系列、線性技術(shù)公司lt180x系列等等。
With phased array radar observing target ' s improvement of different performances of the aircraft , the deterioration of the working environment of radar and improvement of the radar demand request more and higher for putting forward the equipment of phased array radar video signal processing . the digital signal processing is all the time the developing direction of radar signal processing , its main shortcoming is that the increase processing precision , and the amount of information at the same time bring on the amount processing redouble , method to solve this problem is the real - time high speed digital signal processing system . presently multi - processors parallel processing is the focus of the field of high - speed real - time processing . this paper ' s background is the high - speed real - time signal processing of phased array radar . a parallel computing system designed with 4 adsp - 21060 analog device inc ' s dsp is presented . lt has fully utilized the dsp ' s characteristic to be supported the parallel computing , and formed a mes h architecture . this paper design and discusses this system in terms of design for test ( dft ) and real time operation system ( rtos ) , and have put forward the new solution for the design and development of the high - speed real - time signal processing system . . then , analysed the subject matter faced at the same time 本文以高速實(shí)時(shí)相控陣?yán)走_(dá)視頻信號(hào)處理為背景,提出了一種由4片ad公司adsp - 21060構(gòu)成的并行計(jì)算系統(tǒng)。它充分利用了adsp - 21060支持多處理器并行計(jì)算的特點(diǎn)構(gòu)成了一種網(wǎng)格結(jié)構(gòu),并且從可測(cè)性設(shè)計(jì)、實(shí)時(shí)操作系統(tǒng)角度對(duì)該系統(tǒng)進(jìn)行了設(shè)計(jì)與討論,為高速實(shí)時(shí)信號(hào)處理系統(tǒng)的設(shè)計(jì)與開發(fā)提出了新的解決方案,同時(shí)分析了面臨的主要問(wèn)題。本文首先分析了相控陣?yán)走_(dá)信號(hào)處理單元的特點(diǎn),然后針對(duì)適合于片間并行的adsp - 21060討論了并行計(jì)算結(jié)構(gòu),提出了一種采用四片adsp - 21060構(gòu)成網(wǎng)格結(jié)構(gòu)的信號(hào)處理平臺(tái),分析了它的工作原理。