Proceedings of International Conference on Consumer Electronics最新文献

{"title":"Grand Alliance Prototype Transport Stream Encoder Design & Implementation","authors":"P. W. Lyons","doi":"10.1109/ICCE.1995.518000","DOIUrl":"https://doi.org/10.1109/ICCE.1995.518000","url":null,"abstract":"The Grand Alliance HDTV System has been designed to provide advanced television service to North America. The FCC Advisory Committee on Advanced Television Service & the Grand Alliance have devised a testing program that demonstrates & measures the performance of a prototype system that has been constructed. This paper describes the prototype Transport Stream Encoder subsystem design & implementation. Summary The formation of the Grand Alliance (GA) brought former competitors together to achieve the goal of designing an HDTV system composed of the \"best of the best\" system components. This paper describes the design of the Grand Alliance Prototype Transport Stream Encoder. A brief discussion concerning the status of the Moving Pictures Expert Group (MPEG2) International Standard on the coding of moving pictures and associated audio during the formative days of the system design & the role of the GA Transport Specialists Group in producing the transport specifications precedes the technical description of the Transport System. The Transport layer of the GA System is directly based upon MPEG2 specifications with the general requirement that the Transport streams be MPEG2 compliant. An overview of the MPEG2 Transport layer, including packet structures, is presented as the foundation for prototype development. The two system architectures that were considered during the system design phase of the project are presented using system block diagrams. A discussion of the rational behind the final choice in architecture follows. The selected prototype system architecture is described in detail. System timing, using Program Clock Reference (PCR), Decode Time Stamps (DTS) & Presentation Time Stamps (PTS), is a primary responsibility of the Transport system. A relatively simple interface that passes Program Clock Reference Base (PCRB) is described. Each program in the Transport Stream has a 27Mhz System Clock Reference that is locked to the pixel sample clock for that program. The relationships involving these parameters are explained in detail. Packetized Elementary Streams (PES) are supplied to the Transport Stream Encoder (TSE) by the individual data encoders. The PES layer carries Decode Time Stamps (DTS) & Presentation Time Stamps (PTS) created using information that is readily available at the individual data encoders. While MPEG2 defines the PES layer as a Transport function, this approach simplifies the interface between the individual PES & TSE encoders. An explanation of this interface and the input data processing circuits is given. 308 0-7803-2140-5195 $3.00 \" 1995 IEEE Multiple time related PES streams containing Video, Audio 8z perhaps Data, arrive at Transport bundled as a program. A TSE Program Input Board processes the incoming PES stream prior to the construction of transport packets. These input data processing steps are","PeriodicalId":306595,"journal":{"name":"Proceedings of International Conference on Consumer Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122262306","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}

{"title":"Design of a Video Storage System for Interactive Video-on-Demand","authors":"Mong-Shu Lee, Chun-Hung Wen, Chih-Yuan Cheng, Y. Oyang","doi":"10.1109/ICCE.1995.518029","DOIUrl":"https://doi.org/10.1109/ICCE.1995.518029","url":null,"abstract":"This paper discusses the design of a video-on-demand server that supports filly interactive operations such as play, fast forward search, and fast backward search, with a novel data placement and retrieval scheme. The main distinction of this scheme is that it is based on a general two-level disk array drchitecture that exploits both parallelism and concurrency offered by various levels of disk array structures. The proposed scheme requires no extra disk bandwidth to support interactive operations as many previously proposed schemes do. This nature, in turn, means more eflective utilimtion of disk bandwidth.","PeriodicalId":306595,"journal":{"name":"Proceedings of International Conference on Consumer Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134197381","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}

{"title":"Digital audio processor for consumer-use digital VCR","authors":"Han Jung, J. H. Choi, S. Ro, Yong-Taik Lim","doi":"10.1109/ICCE.1995.518042","DOIUrl":"https://doi.org/10.1109/ICCE.1995.518042","url":null,"abstract":"This paper presents a digital audio processor for a digital VCR. This LSI can speedily control the external RAM, which accumulates the audio data to be delayed for synchronizing with the video data and shuffles them over tracks and data sync blocks within a frame. This LSI has achieved high quality sound and strong error recovery.","PeriodicalId":306595,"journal":{"name":"Proceedings of International Conference on Consumer Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128864633","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}

{"title":"Automatic white balance of digital still camera","authors":"Yung-Cheng Liu, W. Chan, Ye-Quang Chen","doi":"10.1109/ICCE.1995.517893","DOIUrl":"https://doi.org/10.1109/ICCE.1995.517893","url":null,"abstract":"A new algorithm of automatic white balance for electronic images has been developed. This algorithm uses hzzy logic rules for determinationi of the color parameters in order to minimize the color temperature difference of various light sources. This algorithm has been implemented in a newly designed electronic still camera, and resulted in highly improved image quality.","PeriodicalId":306595,"journal":{"name":"Proceedings of International Conference on Consumer Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116908718","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}

{"title":"One-chip digital signal processor for ANC (active noise control) applications","authors":"Seung-Beum Baik, Dongjin Seo, D. Choi, Suk-Beum Song, Suk-ki Kim","doi":"10.1109/ICCE.1995.518046","DOIUrl":"https://doi.org/10.1109/ICCE.1995.518046","url":null,"abstract":"One-chip digital signal processor has been developed, which is suitable for active noise control (ANC). This chip includes dual 8-bit ADCs, a DAC, CMOS operational amplifiers, a 16 bit fixed point arithmetic DSP and a 2K-ROM. It is fabricated using 0.8 /spl mu/m double poly, double metal CMOS process.","PeriodicalId":306595,"journal":{"name":"Proceedings of International Conference on Consumer Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117306760","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}

{"title":"DESIGN AND EXPERIMENTAL EVALUATION OF A PILOT TONE AIDED CARRIER RECOVERY SYSTEM FOR WIRELESS PERSON","authors":"M. Golanbari, K. Feher","doi":"10.1109/ICCE.1995.518014","DOIUrl":"https://doi.org/10.1109/ICCE.1995.518014","url":null,"abstract":"Experimental tests performed on a prototype circuit for pilot-tone aided carrier recovery demonstrate the circuit's ability to provide a feasible, reliable and economic solution for reference signal recovery. The potential applications benefits of reference signal recovery include improved bit error rate performance for wireless modems. SUMMARY An attractive digital modulation for PCS is quadrature phase shift keying (QPSK). Efficient demodulation of QPSK signals requires a carrier recovery (CR) circuit. In conventional CR methods, a phase locked loop (PLL) is employed. In fast multipath fading channels, which characterize wireless personal communications, the performance of a PLL degrades drastically, leading to poor bit error rate (BER) performance and irreducible BER floors. Pilot aided modulation techniques have been shown to be effective in reducing the detrimental effects of fast multipath fading, path loss, delay spread and Doppler shifts. These schemes transmit an unmodulated pilot tone together with the data signal. Since the pilot suffers the same impairments as the signal, it can be used to extract a reference signal which is coherent in frequency and phase with the received signal. The reference can be employed to remove the random phase variations from the received signal and normalize the random amplitude variations. Improved BER performance and lower BER floors become feasible, out-performing noncoherent detection. Additionally, pilot-aided schemes are faster than PLL methods in synchronizing bursty signals. The drawbacks are that the pilots take up additional power andor bandwidth, are sensitive to frequency shifts, and cause some envelope fluctuation. Additionally, if the pilots are located at the ends of the data spectrum, they are susceptible to adjacent channel interference. However, under most circumstances these shortcomings are more than offset by the benefits. We chose the frequency of lOMHz for the carrier. In the transmitter, two tones are added to the modulated signal: One tone at 13MHz, a second at 7MHz. The picture below shows the measured power spectral density of the signal at the transmitter output. Fig. 1. The spectra at the transmitter output. It is comprised of the data spectra, centered at 10MHz; the tone at 13MHz, shown on the right; and the tone at 7MHz, shown on the left. 342 0-7803-2140-5195 $3.00 \" 1995 IEEE In the receiver, a band-pass filter (BPFJ passes only the tone at 13MHz. Similarly, BPF2 passes only the tone at 7MHz. Next, the signals at the outputs of these filters are mixed. The resulting signal is comprised of one tone at 20MHz, and a second tone at 6MHz. This signal is filtered by BPF3, which blocks the tone at 6MHz. The resulting signal is connected to a frequency-divide-by-2 circuit, which is followed by a smoothing filter. The resultant signal is in frequency and phase coherence with the received signal, and is shown in Figs. 2 and 3 below. Fig. 2. Time domain display of the recovered refere","PeriodicalId":306595,"journal":{"name":"Proceedings of International Conference on Consumer Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129685903","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}

{"title":"A new tracking control system with playback RF signal for VCR","authors":"H. Abe, K. Minabe, H. Nishijima, K. Kaniwa, Y. Narita","doi":"10.1109/ICCE.1995.517876","DOIUrl":"https://doi.org/10.1109/ICCE.1995.517876","url":null,"abstract":"A new tracking control system by mountain climbing method using playback RF signal was developed. In order to use the system without any conventional method, speed compensation control and dynamic mode control were developed. And a new detecting method of rotational phase for cylinder that also uses playback signal was developed.","PeriodicalId":306595,"journal":{"name":"Proceedings of International Conference on Consumer Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130616432","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}

{"title":"Color printer correction system by using fuzzy tree approach","authors":"Chun-Yueh Huang, Chien-Hsiu Huang, Chang-Ching Yeh, Bin-Da Liu","doi":"10.1109/ICCE.1995.517957","DOIUrl":"https://doi.org/10.1109/ICCE.1995.517957","url":null,"abstract":"A fuzzy tree approach is proposed to solve the color correction problems between a scanner and a printer. Experimental results show that this methodology produces a good correction performance and has a low computational complexity.","PeriodicalId":306595,"journal":{"name":"Proceedings of International Conference on Consumer Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132904497","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}

{"title":"AGC stability requirements for the decoder interface","authors":"D. Badger","doi":"10.1109/ICCE.1995.517949","DOIUrl":"https://doi.org/10.1109/ICCE.1995.517949","url":null,"abstract":"In order to insure the RF AGC system is stable for any cable decoder connected to any receiver, the gain and time constants for both must be specified. These requirements and their development are given. The analysis results in a gain-bandwidth specification for the receiver's RF AGC line, a minimum phase response for both the receiver and decoder IF AGC loops, a maximum capacitance for the decoder AGC line and a minimum resistance for the receiver's AGC port. Further, the phase response for the IF AGC loops is separated into more easily measured gain and bandwidth requirements.","PeriodicalId":306595,"journal":{"name":"Proceedings of International Conference on Consumer Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126235007","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}

{"title":"\"Browse search using audio key-information\" for multimedia on-demand systems","authors":"R. Kubozono, K. Gomi, S. Kinohara, M. Inagaki, Y. Matsuura","doi":"10.1109/ICCE.1995.518027","DOIUrl":"https://doi.org/10.1109/ICCE.1995.518027","url":null,"abstract":"\"Browse search using audio key-information\" enhances the information search on multimedia on-demand systems. In this scheme, audible digests (key-information), used for browsing, are provided synchronously with text based indexes to the corresponding information.","PeriodicalId":306595,"journal":{"name":"Proceedings of International Conference on Consumer Electronics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120959322","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}