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The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.最新文献

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Optimise the dynamic range of a sigma-delta modulator 优化sigma-delta调制器的动态范围
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354373
J. Zhang, P. Brennan, D. Jiang, P. Smith, E. Vinogradova
{"title":"Optimise the dynamic range of a sigma-delta modulator","authors":"J. Zhang, P. Brennan, D. Jiang, P. Smith, E. Vinogradova","doi":"10.1109/MWSCAS.2004.1354373","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354373","url":null,"abstract":"This paper introduces analytic and numerical methods to optimise the dynamic range of a third-order sigma-delta analogue-to-digital converter (ADC). Quantisation noise in a specified bandwidth is predicted and expressed relative to the maximum sinusoidal output from the ADC, for a range of design parameters, in order to establish the optimum design to achieve maximum dynamic range.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133570215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fast image extraction by lifting wavelets 提升小波快速图像提取
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354182
K. Niijima, S. Takano, R. Ikeura
{"title":"Fast image extraction by lifting wavelets","authors":"K. Niijima, S. Takano, R. Ikeura","doi":"10.1109/MWSCAS.2004.1354182","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354182","url":null,"abstract":"Two kinds of fast image extraction methods using lifting wavelets are introduced, which were developed recently by us. The first method uses lifting biorthogonal wavelet filters proposed by Sweldens. The lifting filters include controllable free parameters. Our idea is to learn the free parameters so that lifting highpass components in horizontal direction are equal to those in vertical direction. The learned filters are applied to extract objects in a sequence of images. The second method employs lifting dyadic wavelet filters proposed recently by us. Wavelet transform obtained using these filters is shift-invariant. A learning method of free parameters contained in the dyadic wavelet filters is proposed to achieve fast object extraction. Since the accuracy of the extraction is very high, it can be used as a personal identification tool.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127656903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A highly fault tolerant PLA architecture for realization of Boolean functions using failure-prone nanometer-scale device technologies 一种高容错性的PLA架构，用于使用易故障的纳米级器件技术实现布尔函数
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354375
A. Schmid, Y. Leblebici
{"title":"A highly fault tolerant PLA architecture for realization of Boolean functions using failure-prone nanometer-scale device technologies","authors":"A. Schmid, Y. Leblebici","doi":"10.1109/MWSCAS.2004.1354375","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354375","url":null,"abstract":"This paper addresses the functional robustness and fault-tolerance capability of very-deep submicron CMOS and single-electron transistor (SET) circuits. A four-layer architecture is proposed for the design of very high-density digital systems using inherently unreliable and error-prone devices. Empirical results based on SPICE simulations show that the proposed design method improves fault immunity at transistor level. Graceful degradation of circuit performance allows recovery of information, where classical circuits would fail. The implementation of the proposed circuit architecture is shown as a regular and compact PLA-style matrix, allowing easy adaptability of the redundancy factor.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132938471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two-stage filters for canceling a one-dimensional duct noise based on transmission-line model 基于传输在线模型的两级滤波器消除一维管道噪声
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354316
N. Nakasako, H. Ogura, T. Deguchi, A. Ishikawa
{"title":"Two-stage filters for canceling a one-dimensional duct noise based on transmission-line model","authors":"N. Nakasako, H. Ogura, T. Deguchi, A. Ishikawa","doi":"10.1109/MWSCAS.2004.1354316","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354316","url":null,"abstract":"Active noise control (ANC) in a one-dimensional duct can be expressed in terms of a transmission line model. Thus, the proposed ANC system probes sound pressures at arbitrary two points of the transmission line, differing from a usual system such as filtered-x. The frequency response function of ANC circuit is obtained and then the two-stage digital filter for control is realized. More concretely, the first stage filter generates the voltage and current at the secondary source position from the observations and the second one produces the secondary source. Finally, the validity of the proposed theory is confirmed through simulation.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133248448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A constant power consumption CMOS LC oscillator using improved high-Q active inductor with wide tuning-range 采用改进型宽调谐范围高q有源电感的恒功耗CMOS LC振荡器
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354366
Ming-Jeui Wu, Jyh-Neng Yang, Chen-Yi Lee
{"title":"A constant power consumption CMOS LC oscillator using improved high-Q active inductor with wide tuning-range","authors":"Ming-Jeui Wu, Jyh-Neng Yang, Chen-Yi Lee","doi":"10.1109/MWSCAS.2004.1354366","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354366","url":null,"abstract":"An improved CMOS high-Q active inductor and a constant power consumption oscillator with wide tuning-range are presented. The inductor using one feedback resistor results in a gain to improve the Q-value of the inductor and tune the inductance (L). Based on this inductor, a negative resistance LC-tuned oscillator with constant power consumption and wide tuning-range has been designed. The simulation results show that the improved active inductor can achieve the maximum Q-value of 3500. The power consumption of a constant value around 10 mW exists in the oscillator. This oscillator also depicts a reasonable phase noise performance of -91 dBc/Hz at 600 kHz from 0.8 GHz to 3 GHz range. Furthermore, the deviation of the phase noise is as small as 6 dBc/Hz during this tuning-range.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132225437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 21
Noise-robust fundamental frequency extraction method based on band-limited amplitude spectrum 基于带限幅谱的抗噪基频提取方法
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354111
T. Shimamura, H. Takagi
{"title":"Noise-robust fundamental frequency extraction method based on band-limited amplitude spectrum","authors":"T. Shimamura, H. Takagi","doi":"10.1109/MWSCAS.2004.1354111","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354111","url":null,"abstract":"In this paper, a fundamental frequency extraction method of noisy speech is proposed. An exponentiated amplitude spectrum is calculated with a band-limitation operation and its inverse Fourier transform is used as the basis function for fundamental frequency extraction. It is shown that the function invokes a performance robust against noise as well as formant characteristics. Experimental results show that the proposed method provides an improvement relative to the conventional methods at a wide rage of signal-to-noise ratios.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125683790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Learning using simultaneous perturbation for pulse coupled oscillator 脉冲耦合振荡器的同步摄动学习
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354172
Y. Maeda, M. Nakatsuka
{"title":"Learning using simultaneous perturbation for pulse coupled oscillator","authors":"Y. Maeda, M. Nakatsuka","doi":"10.1109/MWSCAS.2004.1354172","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354172","url":null,"abstract":"This paper proposes a learning scheme for pulse coupled oscillators using the simultaneous perturbation optimization method. It is complicated for ordinary method to find proper parameter values in the pulse coupled oscillator for a proper period, since the pulse coupled oscillator is a kind of recurrent network. The simultaneous perturbation optimization method can give a simple solution to this problem. The details of the learning scheme are described. Some results of the learning method for pulse coupled oscillators are shown.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124566383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A simple edge-weighted image enhancement filter using wavelet scale products 一个简单的边缘加权图像增强滤波器使用小波尺度产品
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1353983
M. Nakashizuka, K. Aoki, T. Nitta
{"title":"A simple edge-weighted image enhancement filter using wavelet scale products","authors":"M. Nakashizuka, K. Aoki, T. Nitta","doi":"10.1109/MWSCAS.2004.1353983","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1353983","url":null,"abstract":"In this paper, we propose a non-linear image enhancement filter for noisy images. Unsharp masking that is widely used for image enhancement amplifies image contrast by adding the high-frequency component that is obtained by a linear high-pass filter from an input image. The linear high-pass filter of the unsharp masking also emphasizes noises that appear in the input image. In order to avoid the emphasis of the noises, weighted unsharp masking techniques have been proposed. In these methods, the high-frequency component is defined as a product between a weighting function of which modulus increases around image edges and the linear high-pass filter output. To improve the noise suppression property of the weighted unsharp masking, we introduce wavelet scale products to the weighting function. The weighting function of the proposed method is defined as the linear combination of the squared of a wavelet transform and the product of the wavelet transforms at different scales. We specify the parameter of the weighting function based on the edge enhancement property and the noise amplification property. The statistical analysis of the noise amplification shows that the proposed method can reduce the noise variance to about 1/5 of the gradient-based weighted unsharp masking filter. Examples of image enhancement and a comparison between the other weighted unsharp masking are also shown.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124738638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Image digital watermarking capacity and reliability analysis in wavelet domain 小波域图像数字水印能力及可靠性分析
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354301
Fan Zhang, Hongbin Zhang
{"title":"Image digital watermarking capacity and reliability analysis in wavelet domain","authors":"Fan Zhang, Hongbin Zhang","doi":"10.1109/MWSCAS.2004.1354301","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354301","url":null,"abstract":"Recently, wavelet transform has been applied widely in watermarking research as its excellent multi-resolution analysis property. Almost all previous works on watermarking capacity are realized in spatial domain. This paper proposes an adaptive watermarking capacity analysis method in wavelet domain. This paper also analyzes the relation between watermarking capacity and watermarking detection bit error rate (BER), and derives the relation between capacity and the limit of BER for the first time. According to the result of our research, watermarking detection BER is mainly influenced by the watermarking average energy and watermarking capacity. The BER rises with the increase of watermarking capacity.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"18 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131954581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Hardware implementation of genetic algorithms using FPGA 利用FPGA实现遗传算法的硬件实现
The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04. Pub Date : 2004-07-25 DOI: 10.1109/MWSCAS.2004.1354049
W. Tang, Leslie Yip
{"title":"Hardware implementation of genetic algorithms using FPGA","authors":"W. Tang, Leslie Yip","doi":"10.1109/MWSCAS.2004.1354049","DOIUrl":"https://doi.org/10.1109/MWSCAS.2004.1354049","url":null,"abstract":"In this paper, a hardware implementation of genetic algorithm using field-programmable gate arrays (FPGAs) is described and implemented. Such development can greatly improve the speed of genetic algorithm by the hardware parallel and pipelined architectures. In our design, various configurations of parallelization are available with a PCI board based design, which further helps in forming a fast optimization tool for real-world applications.","PeriodicalId":185817,"journal":{"name":"The 2004 47th Midwest Symposium on Circuits and Systems, 2004. MWSCAS '04.","volume":"30 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133267265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 56
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