ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
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25.49
Displaying 1-9 of 9 articles from this issue
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  • [title in Japanese]
    Article type: Cover
    Pages Cover1-
    Published: July 27, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.49.0_Cover1
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • [title in Japanese]
    Article type: Index
    Pages Toc1-
    Published: July 27, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.49.0_Toc1
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • Real-time recording technique and PC interface for the DVD-RAM camera.
    Kazuto Yoneyama
    Article type: Article
    Session ID: MMS2001-47
    Published: July 27, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.49.0_1
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We have developed a video camera recorder using small-size 80mm DVD-RAM with the following features: direct playback by selecting a thumbnail, no accidental overwrite, high-quality picture for a long time, playback on PCs with a 4.7GB DVD-RAM drive, DVD recorders, and future DVD players. This paper presents two technical features in the DVD-RAM camera. The first one is the real-time recording technique of DVD-RAM drive with power-saving management. The second one is the PC interface that provides an easy-to-use environment for handling user data, motion pictures and still pictures.
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  • ACTUATOR CONTROL TO SUPPRESS DISTURBANCES FOR 8cm DVD-RAM VIDEO CAMERA RECORDER
    Seiji Imagawa, Motoyuki Suzuki, Hiroaki Ono, Jun Ohya
    Article type: Article
    Session ID: MMS2001-48
    Published: July 27, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.49.0_7
    CONFERENCE PROCEEDINGS FREE ACCESS
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    A new actuator control technique for 8cm DVD-RAM drive, used for a video camera recorder was developed. The drive is required to record pictures without trouble in a situation that external disturbances occur when using portable equipment. However, the optical disc drive is easily influenced by disturbances, such as vibration or shock. The new technique consists of the Acceleration Feed Forward Control(AFFC)and the Velocity Feed Back Control(VFBC). Suppressing external disturbances made it possible for the drive to be used practically inside the video camera.
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  • Read Channel Signal Processing Method for Phase-Change Optical Disk of 25GB Capacity using PRML
    Harumitsu Miyashita, Atsushi Nakamura, Junichi Minamino, Mamoru Syouji
    Article type: Article
    Session ID: MMS2001-49
    Published: July 27, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.49.0_13
    CONFERENCE PROCEEDINGS FREE ACCESS
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    As an approach to the recording/reproducing system of the record capacity of 25GB on a thin cover layered(=0.1mm thickness)of phase change optical disk with a 405nm GaN laser and a high NA(=0.85)objective lens, we have been working on the PRML technology, especially, paying attention to the combination with run length limited modulation code. Focusing on the correlation between the measured MTF character and the PR character, we did theoretical simulations and actual experiments. As a simulation result, it is found that PR(3, 4, 4, 3)ML was the most suitable for a D8-15 modulation code system and PR(1, 2, 2, 1)ML for a(1, 7)modulation code system. The actual recording/reproducing experiment results show that the PRML improves the reproducing stress margin significantly in comparison with conventional level-slicing method in both D8-15 and(1, 7)modulation code systems. The BER after PRML in both modulation code systems was almost equal, i.e.about 1e-5. These experimental results have made it clear that record capacity of 25GB would be realized if PRML is used in either case applying(1, 7)modulation code system or D8-15 modulation code system.
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  • A HIGH DENSITY AND HIGH DATA TRANSFER RATE FLEXIBLE DISK DRIVE FOR INSERTION TO THE PCMCIA TYPE-II SLOT
    Yutaka Okazaki, Yoshihide Shimpuku, Hiroyuki Ino, Hisato Suzuki, Kazut ...
    Article type: Article
    Session ID: MMS2001-50
    Published: July 27, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.49.0_19
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We have developed a new small, flexible magnetic-disk recording system which has the largest areal density(672 Mbit/sqin)in FDD formats and a 18 Mbit/sec maximum user data transfer rate. This is a new card size flexible disk drive(CFDD)format using a 1.75-inch disk on which 146 Mbytes of data can be stored.
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  • Digital Stream Processing Technology for Digital HDTV Receiver with a HDD
    Tatsuo Koga, Takayoshi Abe, Atsuo Nishigaki, Morio Matsudaira
    Article type: Article
    Session ID: MMS2001-51
    Published: July 27, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.49.0_25
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We developed Digital HDTV receiver with a HDD for digital broadcasting. This receiver provides simultaneous recording and playback of HDTV, simultaneous recording of two programs and playback of one program. We formed the performance model of the storage block for analysis. And, using the performance model, we optimized block size for disk I/O request in the view of buffer size and response for user's operation.
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  • Performance Analsysis of Hierarchical Storage Systems for Video Retrieval System
    Shoichiro Ogawa, Kazuhiro Kamimura, Takashi Kato, Toshihiro Uehara, Ha ...
    Article type: Article
    Session ID: MMS2001-52
    Published: July 27, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.49.0_31
    CONFERENCE PROCEEDINGS FREE ACCESS
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    This paper presents performance comparison parameters for hierarchical storage management systems(HSMS)for video retrieval systems. These parameters are average access time and average operating time. The performance of the two prototype system with HSMS. one with optical disk and HDD and the other with magnetic tape and HDD are evaluated with these parameters. The results show that HSMS with optical disk has shorter average access time and average operating time, when using MPEG-4 compression format for reference video with code rate of 500kbps.
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  • [title in Japanese]
    Article type: Appendix
    Pages App1-
    Published: July 27, 2001
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.25.49.0_App1
    CONFERENCE PROCEEDINGS FREE ACCESS
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