Pub Date : 1997-12-02DOI: 10.1109/ISCE.1997.658412
K. Suzuki, M. Nagao, A. Muraki, H. Ikeda
A progressive concept of an electronic encyclopedia has been proposed for boys and girls in order to satisfy their interest in nature, i.e., butterflies and/or wild birds. Based on the new concept, a system application has been developed utilizing the integrated technologies of the computer systems, communication networks, and consumer electronics. Center facilities and navigation are important features of the new concept for realizing an electronic encyclopedia of butterflies and wild birds. The electronic encyclopedia stores more than one thousand items of butterflies and wild birds in MPEG2 format videos and/or JPEG format still pictures. Boys and girls can arbitrarily retrieve them though optical free-space transmission facilities, CATV or Internet lines, and broadcast transmitters utilize the navigation. At the final step of the retrieval, the boys and girls can see a frame of pictures of the designated butterfly without requiring any other knowledge other than touch-panel operations.
{"title":"New type of electronic encyclopedia for boys and girls-an application of multimedia videos to consumer electronics","authors":"K. Suzuki, M. Nagao, A. Muraki, H. Ikeda","doi":"10.1109/ISCE.1997.658412","DOIUrl":"https://doi.org/10.1109/ISCE.1997.658412","url":null,"abstract":"A progressive concept of an electronic encyclopedia has been proposed for boys and girls in order to satisfy their interest in nature, i.e., butterflies and/or wild birds. Based on the new concept, a system application has been developed utilizing the integrated technologies of the computer systems, communication networks, and consumer electronics. Center facilities and navigation are important features of the new concept for realizing an electronic encyclopedia of butterflies and wild birds. The electronic encyclopedia stores more than one thousand items of butterflies and wild birds in MPEG2 format videos and/or JPEG format still pictures. Boys and girls can arbitrarily retrieve them though optical free-space transmission facilities, CATV or Internet lines, and broadcast transmitters utilize the navigation. At the final step of the retrieval, the boys and girls can see a frame of pictures of the designated butterfly without requiring any other knowledge other than touch-panel operations.","PeriodicalId":393861,"journal":{"name":"ISCE '97. Proceedings of 1997 IEEE International Symposium on Consumer Electronics (Cat. No.97TH8348)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1997-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121123824","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 : 1997-12-02DOI: 10.1109/ISCE.1997.658369
A. Yeo, H. Brekelmans
This paper describes a DC/DC converter intended to generate the required reverse voltage for varicap diodes used in RF resonance circuits. As its primary purpose is use in consumer RF products, the proposed design, operating from 5 V, was optimized for low cost. Close proximity to sensitive RF circuitry requires DC/DC converter operation with minimal radio frequency interference. Therefore, instead of using a switching type regulator, the proposed design uses a sinusoid signal with a frequency of about 250 kHz that is stepped-up to the required amplitude by an impedance transformation using an LC resonance circuit. A double wave rectifier converts the AC signal to a DC voltage. A basic idea underlying the converter design is that interference can be kept within limits by minimizing the amount of power to be delivered to the load.
{"title":"An adaptive low power DC-DC converter concept for PLL controlled tuning of RF circuits","authors":"A. Yeo, H. Brekelmans","doi":"10.1109/ISCE.1997.658369","DOIUrl":"https://doi.org/10.1109/ISCE.1997.658369","url":null,"abstract":"This paper describes a DC/DC converter intended to generate the required reverse voltage for varicap diodes used in RF resonance circuits. As its primary purpose is use in consumer RF products, the proposed design, operating from 5 V, was optimized for low cost. Close proximity to sensitive RF circuitry requires DC/DC converter operation with minimal radio frequency interference. Therefore, instead of using a switching type regulator, the proposed design uses a sinusoid signal with a frequency of about 250 kHz that is stepped-up to the required amplitude by an impedance transformation using an LC resonance circuit. A double wave rectifier converts the AC signal to a DC voltage. A basic idea underlying the converter design is that interference can be kept within limits by minimizing the amount of power to be delivered to the load.","PeriodicalId":393861,"journal":{"name":"ISCE '97. Proceedings of 1997 IEEE International Symposium on Consumer Electronics (Cat. No.97TH8348)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1997-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115540059","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 : 1997-12-02DOI: 10.1109/ISCE.1997.658387
Kyungho Kim, C. Kang
In the direct sequence spread spectrum packet radio system, pseudonoise (PN) code synchronization is an essential part which could affect the overall system performance and has to be done in a short time period. In this paper a code phase synchronization device which employs differential detection structure to enhance the overall packet detectability is presented. This device also employs the automatic threshold adaptation technique which was previously presented as a practical scheme to be applied for packet radio communication. However this method called ATC is not suitable for the fading environment which is common in mobile communication. By employing the differential detection structure as its signal preprocessor, the proposed device can still exploit the advantage of ATC and gives significant improvement in terms of packet loss probability in the fast Rayleigh fading channel.
{"title":"Differentially coherent code phase synchronization technique in a DS-SS mobile packet radio","authors":"Kyungho Kim, C. Kang","doi":"10.1109/ISCE.1997.658387","DOIUrl":"https://doi.org/10.1109/ISCE.1997.658387","url":null,"abstract":"In the direct sequence spread spectrum packet radio system, pseudonoise (PN) code synchronization is an essential part which could affect the overall system performance and has to be done in a short time period. In this paper a code phase synchronization device which employs differential detection structure to enhance the overall packet detectability is presented. This device also employs the automatic threshold adaptation technique which was previously presented as a practical scheme to be applied for packet radio communication. However this method called ATC is not suitable for the fading environment which is common in mobile communication. By employing the differential detection structure as its signal preprocessor, the proposed device can still exploit the advantage of ATC and gives significant improvement in terms of packet loss probability in the fast Rayleigh fading channel.","PeriodicalId":393861,"journal":{"name":"ISCE '97. Proceedings of 1997 IEEE International Symposium on Consumer Electronics (Cat. No.97TH8348)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1997-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117240325","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 : 1997-12-02DOI: 10.1109/ISCE.1997.658352
S.K. Hong, H. G. Jeon, W.C. Song, C.E. Kang
The pragmatically coded 2D AM using multilevel coding technique is presented for the channel coding scheme of HDTV transmission environment. The proposed multilevel coding scheme has a asymptotically equal performance to original pragmatic code and requires less computational load.
{"title":"Pragmatically coded 2 dimensional AM for HDTV transmission","authors":"S.K. Hong, H. G. Jeon, W.C. Song, C.E. Kang","doi":"10.1109/ISCE.1997.658352","DOIUrl":"https://doi.org/10.1109/ISCE.1997.658352","url":null,"abstract":"The pragmatically coded 2D AM using multilevel coding technique is presented for the channel coding scheme of HDTV transmission environment. The proposed multilevel coding scheme has a asymptotically equal performance to original pragmatic code and requires less computational load.","PeriodicalId":393861,"journal":{"name":"ISCE '97. Proceedings of 1997 IEEE International Symposium on Consumer Electronics (Cat. No.97TH8348)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1997-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121411702","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 : 1997-12-02DOI: 10.1109/ISCE.1997.658392
Z. Cai
A novel approach is proposed to improve motion estimation, in which low-pass filtered images are used in a motion estimation scheme. When a correct low-pass filter is used in a motion estimation and compensation scheme, the transmitted data and the total time to get the best matches are greatly reduced while the reconstructed image sequences have almost the same quality as those using original motion estimation algorithms. This method can be exploited in any motion estimation scheme to further reduce bit-rates and the time for motion estimation.
{"title":"LPF-based motion estimation","authors":"Z. Cai","doi":"10.1109/ISCE.1997.658392","DOIUrl":"https://doi.org/10.1109/ISCE.1997.658392","url":null,"abstract":"A novel approach is proposed to improve motion estimation, in which low-pass filtered images are used in a motion estimation scheme. When a correct low-pass filter is used in a motion estimation and compensation scheme, the transmitted data and the total time to get the best matches are greatly reduced while the reconstructed image sequences have almost the same quality as those using original motion estimation algorithms. This method can be exploited in any motion estimation scheme to further reduce bit-rates and the time for motion estimation.","PeriodicalId":393861,"journal":{"name":"ISCE '97. Proceedings of 1997 IEEE International Symposium on Consumer Electronics (Cat. No.97TH8348)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1997-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130067741","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 : 1997-12-02DOI: 10.1109/ISCE.1997.658382
J. Metzner, Jong‐Moon Chung
The efficiency in energy utilization under time constraints is compared between two data transmission strategies: transmission through sending a fixed number of copies, and the ARQ technique. The analysis was held assuming that each packet repetition is decoded separately, and also for the case where the combined decision is used under time varying channel conditions. The first example is under constant channel conditions where decisions are held without packet copy combining, for various values of probability of failure (P) and a limited maximum number of transmissions (n). Results indicate that there is a large saving of energy by the ARQ technique compared to transmitting a fixed number of copies for rather small values of n, and the energy saving ratio increases even more with a larger n and also in the case for smaller P values. In the second experiment, packet combining is carried out on a per symbol basis. The overall packet is presumed to have near perfect error detection and possibly also error correction. For numerical comparison purposes a Rayleigh distribution was selected to describe the received power variation of the time varying channel. The results indicate that the saving in energy is substantial, though not as great as in the non-combining case. Unlike the previous experiment, the energy saving ratio increases only for decreasing P values and not for increasing n.
{"title":"Efficient energy utilization with a time constraint and time varying channels","authors":"J. Metzner, Jong‐Moon Chung","doi":"10.1109/ISCE.1997.658382","DOIUrl":"https://doi.org/10.1109/ISCE.1997.658382","url":null,"abstract":"The efficiency in energy utilization under time constraints is compared between two data transmission strategies: transmission through sending a fixed number of copies, and the ARQ technique. The analysis was held assuming that each packet repetition is decoded separately, and also for the case where the combined decision is used under time varying channel conditions. The first example is under constant channel conditions where decisions are held without packet copy combining, for various values of probability of failure (P) and a limited maximum number of transmissions (n). Results indicate that there is a large saving of energy by the ARQ technique compared to transmitting a fixed number of copies for rather small values of n, and the energy saving ratio increases even more with a larger n and also in the case for smaller P values. In the second experiment, packet combining is carried out on a per symbol basis. The overall packet is presumed to have near perfect error detection and possibly also error correction. For numerical comparison purposes a Rayleigh distribution was selected to describe the received power variation of the time varying channel. The results indicate that the saving in energy is substantial, though not as great as in the non-combining case. Unlike the previous experiment, the energy saving ratio increases only for decreasing P values and not for increasing n.","PeriodicalId":393861,"journal":{"name":"ISCE '97. Proceedings of 1997 IEEE International Symposium on Consumer Electronics (Cat. No.97TH8348)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1997-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131739231","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 : 1997-12-02DOI: 10.1109/ISCE.1997.658353
Zhaoyang Zhang, Peiliang Qiu, Kuang-Ming Wang, Q. Yao
This paper describes the realization of the VSB modulation subsystem of the VSB-based HDTV terrestrial broadcasting system, which is part of China's HDTV development project. It gives an overview of the system requirements, as well as some basic considerations of the hardware implementation. Algorithms, and architectures of the main modules, such as the modulator, the carrier phase tracking loop, and the timing recovery loop, are presented, and the implementation results and features are also described.
{"title":"Implementation scheme of VSB modulation","authors":"Zhaoyang Zhang, Peiliang Qiu, Kuang-Ming Wang, Q. Yao","doi":"10.1109/ISCE.1997.658353","DOIUrl":"https://doi.org/10.1109/ISCE.1997.658353","url":null,"abstract":"This paper describes the realization of the VSB modulation subsystem of the VSB-based HDTV terrestrial broadcasting system, which is part of China's HDTV development project. It gives an overview of the system requirements, as well as some basic considerations of the hardware implementation. Algorithms, and architectures of the main modules, such as the modulator, the carrier phase tracking loop, and the timing recovery loop, are presented, and the implementation results and features are also described.","PeriodicalId":393861,"journal":{"name":"ISCE '97. Proceedings of 1997 IEEE International Symposium on Consumer Electronics (Cat. No.97TH8348)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1997-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131798056","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 : 1997-12-02DOI: 10.1109/ISCE.1997.658408
Shin-Hung Chang, Meng-Huang Lee
An interactive multimedia service provides contents delivery upon users' requests. The success of this kind of service is not only dependent on the progress of network and storage techniques, but also on the availability of open application service protocols and open interfaces to achieve the inter-operation among system entities. There are several interactive protocols available today for services. Among them, DAVIC is the most popular international standard for these kinds of services, and digital storage media-command and control protocol (DSM-CC) has been adopted for its service control and session control protocol. The operation of DSM-CC over ATM network is well defined and documented. With the progress in the technology LAN-based network many multimedia applications have become possible over this network architecture. This paper proposes a novel network resource definition scheme specific to Ethernet in order to operate DSM-CC over LAN-based network architecture. It demonstrates not only the suitability of our proposed network resource definitions for Ethernet, but also the inherent flexibility features of DSM-CC.
{"title":"On the inter-dependency of interactive multimedia protocol and network architecture","authors":"Shin-Hung Chang, Meng-Huang Lee","doi":"10.1109/ISCE.1997.658408","DOIUrl":"https://doi.org/10.1109/ISCE.1997.658408","url":null,"abstract":"An interactive multimedia service provides contents delivery upon users' requests. The success of this kind of service is not only dependent on the progress of network and storage techniques, but also on the availability of open application service protocols and open interfaces to achieve the inter-operation among system entities. There are several interactive protocols available today for services. Among them, DAVIC is the most popular international standard for these kinds of services, and digital storage media-command and control protocol (DSM-CC) has been adopted for its service control and session control protocol. The operation of DSM-CC over ATM network is well defined and documented. With the progress in the technology LAN-based network many multimedia applications have become possible over this network architecture. This paper proposes a novel network resource definition scheme specific to Ethernet in order to operate DSM-CC over LAN-based network architecture. It demonstrates not only the suitability of our proposed network resource definitions for Ethernet, but also the inherent flexibility features of DSM-CC.","PeriodicalId":393861,"journal":{"name":"ISCE '97. Proceedings of 1997 IEEE International Symposium on Consumer Electronics (Cat. No.97TH8348)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1997-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132984040","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 : 1997-12-02DOI: 10.1109/ISCE.1997.658351
Yao Qingdong, Wang Kuang, Yang Gang, Qiu Peiliang
There is a worldwide impact to the TV broadcasting and consumer electronics industries starting from the decision of the FCC, of which the transition period of SDTV to digital will be completed in the year of 2006. The digital television era seems to be arriving earlier than that has ever been expected. How to face the challenge of this new era is a serious concern of the industries at present. The VSB transmission system is accepted for terrestrial broadcasting of DTV in the US. As a counterpart, the COFDM system is accepted for DVB. It is natural of interested to investigate these two transmission schemes and compare the performance and the methods of implementation. The simulation results of their performance are presented and a comparison of the hardware implementations is included.
{"title":"A comparison on VSB and COFDM used in HDTV terrestrial broadcasting","authors":"Yao Qingdong, Wang Kuang, Yang Gang, Qiu Peiliang","doi":"10.1109/ISCE.1997.658351","DOIUrl":"https://doi.org/10.1109/ISCE.1997.658351","url":null,"abstract":"There is a worldwide impact to the TV broadcasting and consumer electronics industries starting from the decision of the FCC, of which the transition period of SDTV to digital will be completed in the year of 2006. The digital television era seems to be arriving earlier than that has ever been expected. How to face the challenge of this new era is a serious concern of the industries at present. The VSB transmission system is accepted for terrestrial broadcasting of DTV in the US. As a counterpart, the COFDM system is accepted for DVB. It is natural of interested to investigate these two transmission schemes and compare the performance and the methods of implementation. The simulation results of their performance are presented and a comparison of the hardware implementations is included.","PeriodicalId":393861,"journal":{"name":"ISCE '97. Proceedings of 1997 IEEE International Symposium on Consumer Electronics (Cat. No.97TH8348)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1997-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133611460","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 : 1997-12-02DOI: 10.1109/ISCE.1997.658373
N. Sriskanthan, S. Lim, K. R. Subramanian
This paper proposes the PIM-ASCII100 digital data encoding scheme for short distance infrared (IR) wireless communication between two nodes. This PIM-ASCII100 digital data encoding scheme is a modified version of the pulse position modulation (PPM) data encoding scheme and is intended for fast, low power and reliable IR wireless transmission with simple, minimum and low-cost hardware implementation.
{"title":"PIM-ASCII100 digital data encoding scheme for short distance wireless infrared transmission","authors":"N. Sriskanthan, S. Lim, K. R. Subramanian","doi":"10.1109/ISCE.1997.658373","DOIUrl":"https://doi.org/10.1109/ISCE.1997.658373","url":null,"abstract":"This paper proposes the PIM-ASCII100 digital data encoding scheme for short distance infrared (IR) wireless communication between two nodes. This PIM-ASCII100 digital data encoding scheme is a modified version of the pulse position modulation (PPM) data encoding scheme and is intended for fast, low power and reliable IR wireless transmission with simple, minimum and low-cost hardware implementation.","PeriodicalId":393861,"journal":{"name":"ISCE '97. Proceedings of 1997 IEEE International Symposium on Consumer Electronics (Cat. No.97TH8348)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1997-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133319237","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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