Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)最新文献

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Improvement of photo-electric plethysmograph applying newly developed opto-electronic devices 应用新开发的光电器件改进光电容积脉搏仪
K. Ikeda, Y. Kusaka
{"title":"Improvement of photo-electric plethysmograph applying newly developed opto-electronic devices","authors":"K. Ikeda, Y. Kusaka","doi":"10.1109/TENCON.1999.818618","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818618","url":null,"abstract":"Photo-electric plethysmograph has been widely used to measure the cardiac pulse rate. However, the sensing device remains without any improvement, even though the opto-electronic technology has been highly refined recently. In order to get rid of low-temperature burn, which is often experienced in long-term, continuous applications, and to guarantee enough motion-free measurements, we develop a new type of photo-electric sensing device, together with more sophisticated signal processing circuits. The design criteria and the merit of the prototype device are discussed in some detail.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122709375","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: 2
A hybrid multi-rate scheme for WCDMA WCDMA的混合多速率方案
S. Kim, S. Shin, K. Kwak
{"title":"A hybrid multi-rate scheme for WCDMA","authors":"S. Kim, S. Shin, K. Kwak","doi":"10.1109/TENCON.1999.818648","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818648","url":null,"abstract":"Different kinds of multi-rate communication systems are considered for accommodating information sources with different data rates. Direct-sequence code-division multiple access (DS/CDMA) techniques have attracted much attention for use in such systems. In this paper three multi-rate transmission schemes in a WCDMA system are compared. Both AWGN and multipath Rayleigh fading channels are considered. It is shown that for high data rates the spreading factor in the variable spreading factor scheme will be very small and thus the performance will be significantly degraded due to intersymbol interference. Thus variable spreading factors are used for the low and medium high data rates, and combined with multicode transmission for the highest data rates. Simulation result shows that hybrid multi-rate transmission scheme is suitable for WCDMA.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122725699","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: 5
An intelligent paging strategy for personal communication services network 一种面向个人通信业务网络的智能寻呼策略
P. Bhattacharjee, Debashis Saha, A. Mukherjee
{"title":"An intelligent paging strategy for personal communication services network","authors":"P. Bhattacharjee, Debashis Saha, A. Mukherjee","doi":"10.1109/TENCON.1999.818653","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818653","url":null,"abstract":"This paper presents an intelligent paging strategy, called sequential intelligent paging (SIP), for a personal communication services network (PCSN). Unlike the conventional blanket paging where all cells in a location area are polled at a time, in SIP one cell is polled at a time. We compare the proposed methods with the conventional approach in respect of signaling load polling cost. The proposed scheme leads to a decrease in paging signaling load at the cost of some extra processing power. When the incoming traffic rate is low, SIP performs better when paging cost per cycle is the criterion for choosing a particular scheme of paging. The efficacy of the sequential intelligent paging is shown with the help of simulation results.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122878464","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
Design of a real-time multimedia processing engine based on the TMO model 基于TMO模型的实时多媒体处理引擎的设计
E. Jo, Moon-hae Kim, Doohyun Kim
{"title":"Design of a real-time multimedia processing engine based on the TMO model","authors":"E. Jo, Moon-hae Kim, Doohyun Kim","doi":"10.1109/TENCON.1999.818580","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818580","url":null,"abstract":"This paper describes the design of a multimedia processing engine and QoS processing sub-module providing timely services, based on the TMO model. The TMO (Time-triggered Message-triggered Object) model is a timeliness-guaranteed computing model, developed by Kim and Kopets (1994; 1997). We first identify functional requirements of an engine for processing multimedia services and guaranteeing required QoS dynamically. Then, we present a design of the engine and a prototype developed by using the TMO model.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131109341","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 instantaneous power theory and compensation performance evaluation for active power filters 有源电力滤波器的简单瞬时功率理论及补偿性能评价
Young-Gook Jung, Ha-Suk Kim, Seung-Hak Yang, Y. Lim, F. Harashima
{"title":"A simple instantaneous power theory and compensation performance evaluation for active power filters","authors":"Young-Gook Jung, Ha-Suk Kim, Seung-Hak Yang, Y. Lim, F. Harashima","doi":"10.1109/TENCON.1999.818710","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818710","url":null,"abstract":"The fictitious power theory in time domain is very easy to understand, but the power-analyzing speed of active power filters is increased because of correlation algorithm. Also, conventional 3-D current coordinates for evaluating the performance of active power filters cannot evaluate the characteristics of nonlinear load currents, whether they are inductive or capacitive. Therefore, to solve such problems, this paper deals with the simple instantaneous power theory and the modified 3-D current coordinates for evaluating the compensation performance of active power filters. To confirm the validity, active power filters simulator is developed using C-language. From the simulation, results are discussed their utility.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131580088","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
Smart antenna for multiuser detector 多用户探测器的智能天线
Hak-Lim Ko, Bong-Wee Yu, J. Oh, Won-Taek Kim
{"title":"Smart antenna for multiuser detector","authors":"Hak-Lim Ko, Bong-Wee Yu, J. Oh, Won-Taek Kim","doi":"10.1109/TENCON.1999.818467","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818467","url":null,"abstract":"We propose a switched beamforming system with a multiuser detector in order to suppress the multiple access interference that is coming from the desired user's direction. Since a multiuser detector in the proposed system work only for one beam signal, the required processing delay and the hardware complexity are significantly reduced. We have simulated the proposed system and our simulation results show that the proposed interference canceller achieves a low BER in a heavy interference channel, which conventional spatial filtering system cannot achieve.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132837983","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: 1
Two stage motion-based region merging algorithm for content-based coding 基于内容编码的两级运动区域合并算法
Kun-Woen Song, Ho-Young Lee
{"title":"Two stage motion-based region merging algorithm for content-based coding","authors":"Kun-Woen Song, Ho-Young Lee","doi":"10.1109/TENCON.1999.818664","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818664","url":null,"abstract":"We propose a two stage motion-based region merging algorithm for content-based coding. It uses a six-parameter motion model and the change image obtained from the conventional change detector. First, the type of each region is decided as one of an object, background and uncertain region using the change image. In the first region merging stage, all pairs of two adjacent object regions and two adjacent regions are extracted. Affine motion model parameters for each pair are computed. Then, the merging for one pair that has the smallest error is performed for each type. In particular a large threshold value is used to efficiently merge many redundant regions segmented in the background. In the second region merging stage, the merging for the adjacent uncertain regions or adjacent regions of different types are performed with the same procedure as that of the first stage. A small threshold value is used to merge the extracted adjacent regions which are represented with homogeneous motion parameters while preventing the merging of adjacent object region and background region in the wide range of the threshold value. From the experimental results the proposed merging algorithm is shown to efficiently reduce many redundant regions into one or a few regions in the wide range of the threshold value.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133475953","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: 5
High power factor electronic ballast for high pressure sodium lamp 高压钠灯用高功率因数电子镇流器
B. S. Kang, Heejun Kim
{"title":"High power factor electronic ballast for high pressure sodium lamp","authors":"B. S. Kang, Heejun Kim","doi":"10.1109/TENCON.1999.818561","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818561","url":null,"abstract":"In this paper, an analysis of a high power factor resonant inverter for driving a 150 W HPS lamp and electrical characteristics of the lamp are discussed. The operation of the inverter circuit, in which the lamp is included as a load, is analyzed. Experimental results of the inverter circuit are also presented. Finally, a power factor corrector is connected in cascade with the inverter and a high power factor above 0.99 and low THD on the line current can be achieved.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"279 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134344346","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: 16
Data hiding system by Fresnel transform 基于菲涅耳变换的数据隐藏系统
S. Kang, Y. Aoki
{"title":"Data hiding system by Fresnel transform","authors":"S. Kang, Y. Aoki","doi":"10.1109/TENCON.1999.818492","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818492","url":null,"abstract":"Watermarking is a technique embedding hidden multimedia information imperceptibly, such as images and sounds. Generally the original image is transformed and coded watermark data is embedded in frequency domain watermarking models. In this paper, we propose a new data embedding method using the Fresnel transform. A watermark image is Fresnel-transformed and the intensity of the transformed pattern is embedded into the original image. Our watermarking model has the flexibility in data hiding. It is possible to embed the watermark in many different observable planes with various distance parameters of the Fresnel transform and all kinds of image models such as the shape, letter or photo can be used as the watermark data.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134267313","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: 6
Maximum video compression using AC-coefficient prediction 最大视频压缩使用交流系数预测
T. Muzaffar, T. Choi
{"title":"Maximum video compression using AC-coefficient prediction","authors":"T. Muzaffar, T. Choi","doi":"10.1109/TENCON.1999.818481","DOIUrl":"https://doi.org/10.1109/TENCON.1999.818481","url":null,"abstract":"The AC-coefficient restoration scheme is a technique used to estimate the AC-coefficients using neighboring DCT block values. In this paper, a new approach has been proposed to increase the compression ratio by estimating the AC-coefficients solely from neighboring DC values. Instead of calculating all the DCT coefficients of a block, only DC values are calculated and transmitted whereas the necessary AC-coefficients are estimated for reference frame reconstruction in the encoder. A similar prediction is done at the decoder with the received DCT-DC values to reduce error accumulation. Using this approach, a high compression ratio is achieved by degrading the image quality to an acceptable level. This method proves to be useful where the bandwidth is critical.","PeriodicalId":121142,"journal":{"name":"Proceedings of IEEE. IEEE Region 10 Conference. TENCON 99. 'Multimedia Technology for Asia-Pacific Information Infrastructure' (Cat. No.99CH37030)","volume":"40 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133880571","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: 3
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