ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
Search
Advanced search
OR
Browse
Search
38.6
Displaying 1-12 of 12 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • [title in Japanese]
    Article type: Cover
    Pages Cover1-
    Published: February 07, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.6.0_Cover1
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (12K)
  • [title in Japanese]
    Article type: Index
    Pages Toc1-
    Published: February 07, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.6.0_Toc1
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (30K)
  • A Highly Directional Speaker with Amplitude-Phase Control Using a Digitally Direct-Driven System
    Takemichi ISHIKAWA, Shuma YOKOYAMA, Noboru HARASHIMA, Dai TAKAHASHI, J ...
    Article type: Article
    Session ID: CE2014-4/MMS2014-4
    Published: February 07, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.6.0_1
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    The paper proposes a novel directive control method with amplitude-phase control for a beamforming speaker by using a digitally direct-driven system with an array loudspeaker. This system can achieve high directivity and control side-lobe attenuation with the amplitude-phase control. The output pulse width is controlled using pulse width modulation for changing the amplitude and phase by using several 1-bit D flip-flops because the sub-loudspeakers are driven by 1-bit digital signals without digital-to-analog controllers and amplifiers. A segmented noise shaping dynamic element matching method is used to reduce the noise generated by the mismatch of sub-loudspeakers, which degrades the signal-to-noise ratio.
    View full abstract
    Download PDF (589K)
  • A Study of a HDD Recorder Which Can Apply Downloaded Captions to Recorded TV Programs
    Ryo ZAIZEN, Junpei MORITA, Tomohiro HARAIKAWA, Tohru KAWABE, Hiroyuki ...
    Article type: Article
    Session ID: CE2014-5/MMS2014-5
    Published: February 07, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.6.0_5
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    Due to difficulties of real-time captioning, not all TV programs can be captioned. However, it becomes so common to watch recorded programs, and this time-shifting gives a chance to TV stations to supply captions for their uncaptioned broadcasts. The authors implemented a HDD recorder which can play recorded programs with captions downloaded from a TV station. Our experimental implementation shows that the proposed recorder is easily realized as a little improvement of an ordinary recorder, and it requires no major modifications to a current broadcasting system.
    View full abstract
    Download PDF (4575K)
  • The Functional Extension of HDD Recorder for Voluntary Captioning of Recorded TV Programs
    Youhei YAMAMOTO, Chao-Hung HSU, Tomohiro HARAIKAWA, Jun MITANI, Tohru ...
    Article type: Article
    Session ID: CE2014-6/MMS2014-6
    Published: February 07, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.6.0_9
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    While most of TV programs are broadcasted with captions for auditory-impaired people, not all programs can be captioned due to financial reason. However, it becomes so common to watch recorded TV programs, and the time-shifting gives us a chance to view recorded programs with voluntary captions. This paper reports about a third-party caption server and a compliant HDD recorder. The authors actually implemented such a system and verified its feasibility.
    View full abstract
    Download PDF (607K)
  • Input Impedance Analysis of Wearable Antenna and Its Measurement with Real Human Body
    Dairoku MURAMATSU, Fukuro KOSHIJI, Kohji KOSHIJI, Ken SASAKI
    Article type: Article
    Session ID: CE2014-7/MMS2014-7
    Published: February 07, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.6.0_13
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    Human body communication has received a lot of attention as a promising wireless technology for Body area network. In Human body communication system, High frequency signal is excited in human body through a wearable antenna (electrode). Therefore, it is important to investigate the input impedance characteristics of the antennas considering an effect of human body. In this paper, we studied the input impedance characteristics of antenna worn on the wrist under the dry/wet skin conditions. Moreover, experiment with a prototype wearable antenna and real human body was performed in the frequency range of 1 to 100 MHz. The results showed that analytical and experimental results showed the same tendency in whole frequency range. This means a validity of the FDTD simulation using detailed human arm model. In addition, moisture condition of the skin and differences among individuals had great effect on the input impedance in the low frequency range.
    View full abstract
    Download PDF (3977K)
  • Development of ultra-high resolution sound screen and Moire evaluation
    Masaru KANAZAWA, Toji KIKUCHI, Yoshizo HIGASHIDA
    Article type: Article
    Session ID: CE2014-8/MMS2014-8
    Published: February 07, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.6.0_17
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    Advancement of digital cinema and ultra high resolution system such as Super Hi-Vision strengthen the necessity for development of high resolution sound screens to prevent the picture quality degradation due to interference between a projector's pixel structure and screen's vent holes. We developed a new high resolution sound screen which can be used for Super Hi-Vision with around 400 inch size. This screen is composed of fabrics and doesn't have a simple spatial frequency. We propose a new method to evaluate the interference between the pixel structure and screen structure including such fabrics.
    View full abstract
    Download PDF (3839K)
  • Multimodal Screen Device Cooperation System focused on Findability
    Toru KOBAYASHI
    Article type: Article
    Session ID: CE2014-9/MMS2014-9
    Published: February 07, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.6.0_21
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    I propose a Multimodal Screen Device Cooperation System focused on findability. This system allows us to retrieve information without typing-in search key words. It also allows us to see retrieved information via multi-screen environment based on the multimodal user interface. I show an information finding model as a fundamental concept of this system, system configuration, user interface and prototype system. I believe that this system will solve the problem of information retrieval capability differentials among users.
    View full abstract
    Download PDF (5609K)
  • Compact camera recorder for Super Hi-Vision
    Takeshi KAJIYAMA, Eiichi MIYASHITA, Naoto HAYASHI
    Article type: Article
    Session ID: CE2014-10/MMS2014-10
    Published: February 07, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.6.0_25
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    We have been developing on Super Hi-Vision (SHV) system with the image pixel number of 16 times higher than that of HDTV. We prototyped compact Super Hi-Vision recorder with the NAND memory board and the signal processing board, and confirmed the operation of record and reproduce with low power consumption. The new recorder makes easy to program production on SHV.
    View full abstract
    Download PDF (15225K)
  • [title in Japanese]
    Article type: Appendix
    Pages App1-
    Published: February 07, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.6.0_App1
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (80K)
  • [title in Japanese]
    Article type: Appendix
    Pages App2-
    Published: February 07, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.6.0_App2
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (80K)
  • [title in Japanese]
    Article type: Appendix
    Pages App3-
    Published: February 07, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.6.0_App3
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (80K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top