标签：Density - 电子研发网

Density 74条

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HDB3编解码器设计

HDB3(High Density Bipolar三阶高密度双极性)码是在AMI码的基础上改进的一种双极性归零码，它除具有AMI码功率谱中无直流分量，可进行差错自检等优点外，还克服了AMI码当信息中出现连“0”码时定时提取困难的缺点，而且HDB3码频谱能量主要集中在基波频率以下，占用频带较窄，是ITU-TG.703推荐的PCM基群、二次群和 ...

/dl/39355.html

标签： HDB3 编解码器

上传时间： 2013-11-01

上传用户：lindor

Analog Solutions for Altera FPGAs

Designing withProgrammable Logicin an Analog WorldProgrammable logic devices revolutionizeddigital design over 25 years ago,promising designers a blank chip todesign literally any function and programit in the field. PLDs can be low-logicdensity devices that use nonvolatilesea-of-gates cells calle ...

/dl/39953.html

标签： Solutions Analog Altera FPGAs

上传时间： 2013-10-27

上传用户：fredguo

Analog Solutions for Xilinx FPGAs

Designing withProgrammable Logicin an Analog WorldProgrammable logic devicesrevolutionized digital design over 25years ago, promising designers a blankchip to design literally any functionand program it in the field. PLDs canbe low-logic density devices that usenonvolatile sea-of-gates cells calle ...

/dl/39954.html

标签： Solutions Analog Xilinx FPGAs

上传时间： 2013-11-07

上传用户：suicone

多层印制板设计基本要领

【摘要】本文结合作者多年的印制板设计经验，着重印制板的电气性能，从印制板稳定性、可靠性方面，来讨论多层印制板设计的基本要求。【关键词】印制电路板；表面贴装器件；高密度互连；通孔【Key words】Printed Circuit Board；Surface Mounting Device；High Density Interface；Via一．概述印制板（PCB－Printed Circuit ...

/dl/40325.html

标签： 多层印制板

上传时间： 2013-10-08

上传用户：zhishenglu

高性能覆铜板的发展趋势及对环氧树脂性能的新需求

讨论、研究高性能覆铜板对它所用的环氧树脂的性能要求，应是立足整个产业链的角度去观察、分析。特别应从HDI多层板发展对高性能CCL有哪些主要性能需求上着手研究。HDI多层板有哪些发展特点，它的发展趋势如何——这都是我们所要研究的高性能CCL发展趋势和重点的基本依据。而HDI多层板的技术发展，又是由它的应用市场——终 ...

/dl/40334.html

标签： 性能发展趋势覆铜板环氧树脂

上传时间： 2013-11-19

上传用户：zczc

Manufacturers of electronic systems that require power conversion are faced with the need for highe

Manufacturers of electronic systems that require power conversion are faced with the need for higher-density dc-to-dc converters that perform more efficiently,

/dl/142027.html

标签： Manufacturers electronic conversion systems

上传时间： 2015-04-17

上传用户：diets

Routine mar1psd: To compute the power spectum by AR-model parameters. Input parameters: ip : AR

Routine mar1psd: To compute the power spectum by AR-model parameters. Input parameters: ip : AR model order (integer) ep : White noise variance of model input (real) ts : Sample interval in seconds (real) a : Complex array of AR parameters a(0) to a(ip) Output parameters: psdr : Real array of ...

/dl/161961.html

标签： parameters AR-model Routine mar1psd

上传时间： 2015-06-09

上传用户：playboys0

A general technique for the recovery of signicant image features is presented. The technique is ba

A general technique for the recovery of signicant image features is presented. The technique is based on the mean shift algorithm, a simple nonparametric pro- cedure for estimating density gradients. Drawbacks of the current methods (including robust clustering) are avoided. Feature space of any nat ...

/dl/209335.html

标签： technique presented features recovery

上传时间： 2015-10-14

上传用户：410805624

16 relay output channels and 16 isolated digital input channels LED indicators to show activated

16 relay output channels and 16 isolated digital input channels LED indicators to show activated relays Jumper selectable Form A/Form B-type relay output channel Output status read-back Keep relay output values when hot system reset High-voltage isolation on input channels(2,500 VDC) Hi ESD pr ...

/dl/259633.html

标签： channels indicators activated isolated

上传时间： 2016-02-15

上传用户：dongbaobao

DBSCAN是一个基于密度的聚类算法。改算法将具有足够高度的区域划分为簇

DBSCAN是一个基于密度的聚类算法。改算法将具有足够高度的区域划分为簇，并可以在带有“噪声”的空间数据库中发现任意形状的聚类。-DBSCAN is a density-based clustering algorithm. Algorithm change will have enough height to the regional cluster. and to be with the "noise" of the spatial database found cluste ...

/dl/275706.html

标签： DBSCAN 密度分聚类算法

上传时间： 2013-12-28

上传用户：q123321

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Density 74条

按分类查找:

HDB3编解码器设计

Analog Solutions for Altera FPGAs

Analog Solutions for Xilinx FPGAs

多层印制板设计基本要领

高性能覆铜板的发展趋势及对环氧树脂性能的新需求

Manufacturers of electronic systems that require power conversion are faced with the need for highe

Routine mar1psd: To compute the power spectum by AR-model parameters. Input parameters: ip : AR

A general technique for the recovery of signicant image features is presented. The technique is ba

16 relay output channels and 16 isolated digital input channels LED indicators to show activated

DBSCAN是一个基于密度的聚类算法。改算法将具有足够高度的区域划分为簇

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