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24.19
Displaying 1-15 of 15 articles from this issue
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Article type: Cover
Pages Cover1-
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (13K) -
Article type: Index
Pages Toc1-
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (59K) -
Editha deLuna, Woontack Woo, Yuichi IwadateArticle type: Article
Session ID: BCS2000-1/BFO2000-23
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIn this paper, we introduce a cost-effective way to generate stereo video sequences on the fly from a camera. In general, stereo sequence can be captured using a pair of stereo camera but tend to yield various well-known problems due to diferent camera characteristics. Meanwhile, the Nu-View adapter provides a natural way to capture stereoscopic images/video at hand with a camera. The cost however is the reduced quality of the videos because the adapter allows to capture stereo pairs in the field sequential format, i.e. left and right images in different lines, respectively. Therefore, we propose a way to recover the original quality, which is essential before exploiting stereo images to various other qpplications.View full abstractDownload PDF (841K) -
Makoto TADENUMA, Hiroyuki IMAIZUMI, Yasuaki KANATSUGUArticle type: Article
Session ID: BCS2000-2/BFO2000-24
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIn order to investigate the optimal number and position of cameras in a multi-viewpoint 3-D video system, it is necessary to specify the most general figures and locations of picked-up objects. We selected five pairs of standard stereoscopic Hi-Vision images as the most general ones, and analyzed the statistical characteristics of contours of objects in them. Then we specified a set of 3-D structure data satisfying the characteristics. We carried out simulations in some conditions of camera placement with the structure data, and estimated the accuracy of measuring distance of them.View full abstractDownload PDF (930K) -
Yoshio INAGAKI, Takashi CHO, Sadao TANIKOSHI, Kazuhiko IDE, Nobutaka S ...Article type: Article
Session ID: BCS2000-3/BFO2000-25
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIn the next few years, BS and terrestrial digital broadcasting will be started. To carry out the new broadcasting services while continuing the conventional ones, it is necessary for the network in the broadcasting stations to handle various kind of video signals such as HDTV, SDTV, etc and these compressed ones. To cope with this requirement, we have developed a large scale capacity Rate-Free Matrix switcher, which can switch the signals of wide speed ranges up to 1.5Gbps. In this paper, we present structure, design and characteristics of this switcher.View full abstractDownload PDF (711K) -
Syunji NAKAHRA, Masahiro OKANO, Hiroshi FUJISAWA, Makoto SASAKIArticle type: Article
Session ID: BCS2000-4/BFO2000-26
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThe terrestrial digital sound broadcasting(DSB) system of Japan was standardized in November 1999. Terrestrial DSB services are provided into the frequency bands where analog television services currently operate. For channel planning, protection ratios are required not only against DSB interference but also against analog television interference. This paper describes interference characteristics of the DSB signals by means of laboratory tests. The protection ratios were derived from the characteristics. Protection ratios against analog television interference require 29 dB, -36 dB and -38 dB for co channel, lower adjacent channel and upper adjacent channel respectively. Protection ratios among DSB signals are shown corresponding to every frequency spacing.View full abstractDownload PDF (657K) -
Kenichi Tsuchida, Naohiko Iai, Masayuki Takada, Satoshi Kimura, Shigek ...Article type: Article
Session ID: BCS2000-5/BFO2000-27
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSNarrow-band ISDB-T(Integrated Services Digital Broadcasting for Terrestrial) has been adopted as Japan's standard terrestrial digital audio and data broadcasting system in November 1999. Its transmission scheme is BST-OFDM(Band Segmented Transmission - Orthogonal Frequency Division Multiplexing). There are two kinds of bandwidths : a single 429 kHz segment and about 1.3 MHz for three-segments transmission. The system performance was tested using Tokyo Tower experimental station for the DSB(Digital Sound Broadcasting) standardization process in Japan. Test signals are broadcasted at the power of 100W over a VHF channel with a center frequency of 190 MHz. The received field strength and bit error rate were measured along highways and main roads within 80 km of the tower. The necessary field strength was 38 dBμV/m when each OFDM carrier was modulated by DQPSK and was 44 dBμV/m when each OFDM carrier was modulated by 16QAM. It has been verified that the narrow-band ISDB-T is sufficiently robust against multi-path and fading interference and services for mobile receivers are available.View full abstractDownload PDF (774K) -
Naoto Otsubo, Yoshio Tomura, Takao Ichikawa, Kazumasa Yukino, Yoshikat ...Article type: Article
Session ID: BCS2000-6/BFO2000-28
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSOn January 2000, NHK began broadcasting of a Hi-Definition Drama "Aoi - Tokugawa San-dai". In this drama, video compositing was applied for several scenes in order to realize grand-scale and realistic images, which are the main features of Hi-Definition. In the scene of "The Battle of Sekigahara", the great army with thousands of warriors was realized by compositing video images with 3-D Computer Graphics in multi-layers. In the crane-shot of Osaka Castle, digital painting was used to recreate the castle. By utilizing the merits of non-liner video compositing and 3-D CG, effective and efficient production of the drama was possible. In this report, an outline of the video compositing techniques within this drama will be explained.View full abstractDownload PDF (1015K) -
Hideaki Kono, Teruo Iwase, Tosiyuki Iino, Takeo UnoArticle type: Article
Session ID: BCS2000-7/BFO2000-29
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESS -
Yuji Yamashita, Toru KogumaArticle type: Article
Session ID: BCS2000-8/BFO2000-30
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe have developed the non-linear production system for Japanese closed captioning. This system is more efficient than the old system, and composed of only a personal computer. This system has an input function with speech recognition for Japanese closed captioning.View full abstractDownload PDF (998K) -
Toru OkanoArticle type: Article
Session ID: BCS2000-9/BFO2000-31
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSAt present, the scene in the earthquake is recorded in the VTR through "Skipbackrecorder(delay device)". Then you had to replace a tape to the VTR for sending out and you had to search the top of the necessary scene by manual operation. Since "Skipbackplayer" which we have developed, uses the DRAM system, you can search the top of the scene and play it instantly with one touch from the remote panel. Then you can easily and securely send it out on air.View full abstractDownload PDF (416K) -
Toyomitu Okumura, Hideo YabutaArticle type: Article
Session ID: BCS2000-10/BFO2000-3
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (834K) -
Yoshinobu OKAMOTO, Hisashi KONDO, Satoshi TANAKAArticle type: Article
Session ID: BCS2000-11/BFO2000-3
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIt is important ploblem to consider the optimum S.F.N. network on the digital terrestrial broadcasting but it will require a great deal of labor and a lot of time. This paper discribe about one method on the electro magnetic wave propagation simulation system "AREAKAKUBEH".View full abstractDownload PDF (2847K) -
Hisashi KONDOArticle type: Article
Session ID: BCS2000-12/BFO2000-3
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe are experimenting about Digital Terrestrial Broadcasting System using by Research and Development Facilities of Terrestrial Digital Broadcasting System for Cooperative Usage in HIROSHIMA. In the experiment of SFN Broadcasting Network, the multipass interferance occurred, that caused by the reflected wave from the steel tower near the transmission site therefore we could not get C/N ratio for a BER of less than 2.0E-4 (after the Viterbi decording). In this paper, discribes outline of this experiment and mesurment result.View full abstractDownload PDF (2240K) -
Article type: Appendix
Pages App1-
Published: February 25, 2000
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (81K)
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