Pub Date : 2012-12-13DOI: 10.1109/GCCE.2012.6379663
Hsiang-Fu Yu, Yuan-Chieng Huang
Periodic broadcast is a cost-effective solution for large-scale distribution of popular videos. This strategy partitions a video into multiple segments, which are then broadcast across individual channels. Regardless of the number of video requests, this strategy guarantees constant worst service latency to all clients. An essential periodic broadcast method is the slotted general Fibonacci broadcasting (SGFB) scheme, which allows a client to receive video segments at a small bandwidth. In comparison with other similar schemes, SGFB yields the smallest waiting time. Extending SGFB, this work devises a new scheme to achieve small client buffering space without increasing waiting time. The proposed scheme still guarantees on-time segment downloading under limited client receiving bandwidths. Extensive analysis shows that the new scheme can reduce the buffer size by as much as 34.5%, when compared with SGFB. The scheme is thus appropriate to mobile video systems with limited-capability client devices, such as PDAs and cell phones.
{"title":"A periodic broadcasting scheme for clients of small bandwidths and buffers","authors":"Hsiang-Fu Yu, Yuan-Chieng Huang","doi":"10.1109/GCCE.2012.6379663","DOIUrl":"https://doi.org/10.1109/GCCE.2012.6379663","url":null,"abstract":"Periodic broadcast is a cost-effective solution for large-scale distribution of popular videos. This strategy partitions a video into multiple segments, which are then broadcast across individual channels. Regardless of the number of video requests, this strategy guarantees constant worst service latency to all clients. An essential periodic broadcast method is the slotted general Fibonacci broadcasting (SGFB) scheme, which allows a client to receive video segments at a small bandwidth. In comparison with other similar schemes, SGFB yields the smallest waiting time. Extending SGFB, this work devises a new scheme to achieve small client buffering space without increasing waiting time. The proposed scheme still guarantees on-time segment downloading under limited client receiving bandwidths. Extensive analysis shows that the new scheme can reduce the buffer size by as much as 34.5%, when compared with SGFB. The scheme is thus appropriate to mobile video systems with limited-capability client devices, such as PDAs and cell phones.","PeriodicalId":299732,"journal":{"name":"The 1st IEEE Global Conference on Consumer Electronics 2012","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129810354","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}
Pub Date : 2012-12-13DOI: 10.1109/GCCE.2012.6379610
T. Nakagawa, H. Uwano
To prevent errors during operate a system and improve the work efficiency, usability evaluation and improvement of user interface (UI) for software system have been studied. In this paper, we evaluate how a position of software keyboard which displayed in the touchscreen affects the usability of the keyboard. In current devices, software keyboard is displayed on bottom of the display. The position of software keyboard may affects usability because of relation between position of key and holding/operating hand. In an experiment, three positions on the touchscreen were tested; bottom of the display, under the input window, and top of the display. As a result, keyboards placed on the top of the display or under the input window had taken lower error rate and higher subjective evaluation than bottom of the display, the de facto standard position.
{"title":"Usability differential in positions of software keyboard on smartphone","authors":"T. Nakagawa, H. Uwano","doi":"10.1109/GCCE.2012.6379610","DOIUrl":"https://doi.org/10.1109/GCCE.2012.6379610","url":null,"abstract":"To prevent errors during operate a system and improve the work efficiency, usability evaluation and improvement of user interface (UI) for software system have been studied. In this paper, we evaluate how a position of software keyboard which displayed in the touchscreen affects the usability of the keyboard. In current devices, software keyboard is displayed on bottom of the display. The position of software keyboard may affects usability because of relation between position of key and holding/operating hand. In an experiment, three positions on the touchscreen were tested; bottom of the display, under the input window, and top of the display. As a result, keyboards placed on the top of the display or under the input window had taken lower error rate and higher subjective evaluation than bottom of the display, the de facto standard position.","PeriodicalId":299732,"journal":{"name":"The 1st IEEE Global Conference on Consumer Electronics 2012","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132310218","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}
Pub Date : 2012-12-13DOI: 10.1109/GCCE.2012.6379948
Rinara Woo, D. Han
In this paper, we propose a cooperative media access control (CMAC) protocol to improve the packet reception ratio and to reduce the average delay for multi-hop transmission. The proposed protocol shows better packet delivery ratio and less delay than the IEEE 802.11p MAC protocol for multi-hop transmission.
{"title":"A cooperative MAC for safety-related road information transmission in vehicular communication systems","authors":"Rinara Woo, D. Han","doi":"10.1109/GCCE.2012.6379948","DOIUrl":"https://doi.org/10.1109/GCCE.2012.6379948","url":null,"abstract":"In this paper, we propose a cooperative media access control (CMAC) protocol to improve the packet reception ratio and to reduce the average delay for multi-hop transmission. The proposed protocol shows better packet delivery ratio and less delay than the IEEE 802.11p MAC protocol for multi-hop transmission.","PeriodicalId":299732,"journal":{"name":"The 1st IEEE Global Conference on Consumer Electronics 2012","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114513038","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}
Pub Date : 2012-12-13DOI: 10.1109/GCCE.2012.6379629
P. Polacek, Chih-Wei Huang
Cognitive radio (CR) represents an exciting new paradigm on spectrum utilization and potentially more bandwidth for exploding multimedia traffic and this potential can be further boosted by utilizing well established opportunistic multicasting principles. We focus on the layer encoded video multicast problem in a dynamic CR network. We contribute a data fragmentation mechanism, that fragments data into atomic units, combined with rateless code forward error control (FEC) protection, which enable maximum resource utilization. The resulting zero wasting scheduling scheme enables performance improvement that is showcased by simulation results.
{"title":"Atomic fragmentation for efficient opportunistic multicasting over cognitive radio networks","authors":"P. Polacek, Chih-Wei Huang","doi":"10.1109/GCCE.2012.6379629","DOIUrl":"https://doi.org/10.1109/GCCE.2012.6379629","url":null,"abstract":"Cognitive radio (CR) represents an exciting new paradigm on spectrum utilization and potentially more bandwidth for exploding multimedia traffic and this potential can be further boosted by utilizing well established opportunistic multicasting principles. We focus on the layer encoded video multicast problem in a dynamic CR network. We contribute a data fragmentation mechanism, that fragments data into atomic units, combined with rateless code forward error control (FEC) protection, which enable maximum resource utilization. The resulting zero wasting scheduling scheme enables performance improvement that is showcased by simulation results.","PeriodicalId":299732,"journal":{"name":"The 1st IEEE Global Conference on Consumer Electronics 2012","volume":"312 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114294102","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}
Pub Date : 2012-12-13DOI: 10.1109/GCCE.2012.6379945
Ta Minh Thanh, M. Iwakiri
This paper describes an experimental system integration of Digital Rights Management (DRM) architecture and fingerprinting which is composed of an incomplete cryptography scheme using invariant offset huffman code length feature and the user identification mechanism to control the quality of the digital contents. We adopt the AC-coefficent huffman code length feature of the DCT coefficient in the JPEG codec to the implement incomplete cryptography. In the our scheme, the copyright information is embedded into the decoded content while decoding process, and the size of digital contents are invariant in the whole process. Experimental results with simulation confirmed that the modified codes keep compatibility with standard JPEG format, and revealed the proposed method is suitable for DRM in the network distribution system.
{"title":"Fingerprinting method using invariant offset huffman code length feature","authors":"Ta Minh Thanh, M. Iwakiri","doi":"10.1109/GCCE.2012.6379945","DOIUrl":"https://doi.org/10.1109/GCCE.2012.6379945","url":null,"abstract":"This paper describes an experimental system integration of Digital Rights Management (DRM) architecture and fingerprinting which is composed of an incomplete cryptography scheme using invariant offset huffman code length feature and the user identification mechanism to control the quality of the digital contents. We adopt the AC-coefficent huffman code length feature of the DCT coefficient in the JPEG codec to the implement incomplete cryptography. In the our scheme, the copyright information is embedded into the decoded content while decoding process, and the size of digital contents are invariant in the whole process. Experimental results with simulation confirmed that the modified codes keep compatibility with standard JPEG format, and revealed the proposed method is suitable for DRM in the network distribution system.","PeriodicalId":299732,"journal":{"name":"The 1st IEEE Global Conference on Consumer Electronics 2012","volume":"283 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116571567","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}
Pub Date : 2012-12-13DOI: 10.1109/GCCE.2012.6379973
O. Arnold, A. Schulz
Innovations in the fields of consumer electronics and media technologies are pervading the daily life and invading the private home. There emerge novel communication opportunities. Educational processes such as university studies, for illustration, are unconventionally expanded towards a casual home office. Web browsers and networking technologies provide access to serious content and direct manipulation technologies allow for some transformation of conventional studies into edutainment. Among the novel features is the opportunity for the learner to casually deal with learning content and to informally present his own work to friends and relatives at home in this way supporting the gradual development of thought in speech, as Kleist put it. Consumer electronics and media technology have set the stage for Kleistian learning demonstrated technically and didactically.
{"title":"Technologies, implementations and applications for the Kleistian development of thoughts in speech","authors":"O. Arnold, A. Schulz","doi":"10.1109/GCCE.2012.6379973","DOIUrl":"https://doi.org/10.1109/GCCE.2012.6379973","url":null,"abstract":"Innovations in the fields of consumer electronics and media technologies are pervading the daily life and invading the private home. There emerge novel communication opportunities. Educational processes such as university studies, for illustration, are unconventionally expanded towards a casual home office. Web browsers and networking technologies provide access to serious content and direct manipulation technologies allow for some transformation of conventional studies into edutainment. Among the novel features is the opportunity for the learner to casually deal with learning content and to informally present his own work to friends and relatives at home in this way supporting the gradual development of thought in speech, as Kleist put it. Consumer electronics and media technology have set the stage for Kleistian learning demonstrated technically and didactically.","PeriodicalId":299732,"journal":{"name":"The 1st IEEE Global Conference on Consumer Electronics 2012","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128498725","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}
Pub Date : 2012-12-13DOI: 10.1109/GCCE.2012.6379932
T. Kimura, S. Nakamura, T. Goto, S. Hirano, M. Sakurai
In this study, we investigate the performance of several nonlinear filters for noise reduction in image signals. We find that the total variation (TV) regularization filter exhibits the best performance for effective noise reduction and picture quality preservation. We analyze the behavior of the TV regularization filter and elucidate how noise is reduced effectively without losing edge sharpness or picture minuteness.
{"title":"Nonlinear filters for noise reduction in image signals","authors":"T. Kimura, S. Nakamura, T. Goto, S. Hirano, M. Sakurai","doi":"10.1109/GCCE.2012.6379932","DOIUrl":"https://doi.org/10.1109/GCCE.2012.6379932","url":null,"abstract":"In this study, we investigate the performance of several nonlinear filters for noise reduction in image signals. We find that the total variation (TV) regularization filter exhibits the best performance for effective noise reduction and picture quality preservation. We analyze the behavior of the TV regularization filter and elucidate how noise is reduced effectively without losing edge sharpness or picture minuteness.","PeriodicalId":299732,"journal":{"name":"The 1st IEEE Global Conference on Consumer Electronics 2012","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128548676","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}
Pub Date : 2012-12-13DOI: 10.1109/GCCE.2012.6379546
Yi Hua Chen, Jue-Hsuan Hsiao, J. He
This study used the weight (3, 6) approximate lower triangular regular parity check matrix to implement the LDPC encoding on the 5641R FPGA of the Software Define Radio system developed by National Instruments (NI) [1]. This study provided a detailed introduction to the encoding mechanism of the approximate lower triangular LDPC, and completed the implementation and verification of FPGA hardware.
{"title":"FPGA implementation of LDPC encoder with approximate lower triangular matrix","authors":"Yi Hua Chen, Jue-Hsuan Hsiao, J. He","doi":"10.1109/GCCE.2012.6379546","DOIUrl":"https://doi.org/10.1109/GCCE.2012.6379546","url":null,"abstract":"This study used the weight (3, 6) approximate lower triangular regular parity check matrix to implement the LDPC encoding on the 5641R FPGA of the Software Define Radio system developed by National Instruments (NI) [1]. This study provided a detailed introduction to the encoding mechanism of the approximate lower triangular LDPC, and completed the implementation and verification of FPGA hardware.","PeriodicalId":299732,"journal":{"name":"The 1st IEEE Global Conference on Consumer Electronics 2012","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134374253","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}
Pub Date : 2012-12-13DOI: 10.1109/GCCE.2012.6379562
Wonhee Choe, Sung-Chan Park, Hyun-Hwa Oh, Seong-Deok Lee
Active Motion High Dynamic Range Imaging (HDRI) is a new artifact-free HDRI technology for a consumer digital still camera. This technology allows us to optimize capturing time and to remove motion artifacts by a camera motion and a moving object. To optimize the capturing time, the key component of our approach is a dual-brightness mapping to detect and compensate the artifacts with just two images. This paper shows that the proposed HDRI approach effectively corrects the artifacts.
{"title":"Active Motion High Dynamic Range Imaging for digital still camera","authors":"Wonhee Choe, Sung-Chan Park, Hyun-Hwa Oh, Seong-Deok Lee","doi":"10.1109/GCCE.2012.6379562","DOIUrl":"https://doi.org/10.1109/GCCE.2012.6379562","url":null,"abstract":"Active Motion High Dynamic Range Imaging (HDRI) is a new artifact-free HDRI technology for a consumer digital still camera. This technology allows us to optimize capturing time and to remove motion artifacts by a camera motion and a moving object. To optimize the capturing time, the key component of our approach is a dual-brightness mapping to detect and compensate the artifacts with just two images. This paper shows that the proposed HDRI approach effectively corrects the artifacts.","PeriodicalId":299732,"journal":{"name":"The 1st IEEE Global Conference on Consumer Electronics 2012","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116402487","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}
Pub Date : 2012-12-13DOI: 10.1109/GCCE.2012.6379974
K. Jantke, C. Woelfert
GORGE is the name of a research tool developed for investigations into playful development of technology competence. As a research tool, it has been employed several times in varying settings and application scenarios always quite successfully. Set up as a browser game, GORGE is now invading private homes. Playing GORGE may result in a gain of technology competence provided that particular aspects of digital games taxonomies are put into effect by setting up the edutainment system accordingly.
{"title":"A Trojan research tool invading private homes: Concepts and implementations of playful learning","authors":"K. Jantke, C. Woelfert","doi":"10.1109/GCCE.2012.6379974","DOIUrl":"https://doi.org/10.1109/GCCE.2012.6379974","url":null,"abstract":"GORGE is the name of a research tool developed for investigations into playful development of technology competence. As a research tool, it has been employed several times in varying settings and application scenarios always quite successfully. Set up as a browser game, GORGE is now invading private homes. Playing GORGE may result in a gain of technology competence provided that particular aspects of digital games taxonomies are put into effect by setting up the edutainment system accordingly.","PeriodicalId":299732,"journal":{"name":"The 1st IEEE Global Conference on Consumer Electronics 2012","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121896885","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}
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