ITE Technical Report
Online ISSN : 2433-0914
Print ISSN : 0386-4227
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Volume 18, Issue 56
Displaying 1-7 of 7 articles from this issue
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  • [title in Japanese]
    Article type: Cover
    1994 Volume 18 Issue 56 Pages Cover1-
    Published: October 21, 1994
    Released on J-STAGE: October 13, 2017
    DOIhttps://doi.org/10.11485/tvtr.18.56_Cover1
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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  • [title in Japanese]
    Article type: Index
    1994 Volume 18 Issue 56 Pages Toc1-
    Published: October 21, 1994
    Released on J-STAGE: October 13, 2017
    DOIhttps://doi.org/10.11485/tvtr.18.56_Toc1
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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  • An Investigation of the Head-Tape Interface In a Cluster Head System
    T. Ebihara, Y. Ohtsubo, A. Takahashi, Y. Kubota
    Article type: Article
    1994 Volume 18 Issue 56 Pages 1-6
    Published: October 21, 1994
    Released on J-STAGE: October 13, 2017
    DOIhttps://doi.org/10.11485/tvtr.18.56_1
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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    Video signals are distributed to multi-channel heads in a digital VCR. Multi-channel heads are clustered usually in order to reduce the crosstalk and to make it easy to assemble many heads. We used the transparent cluster heads to observe the head-tape contact. Interference images from the individual heads in a cluster head were observed simultaneously by using image processing method. The influence of the head projection and tape tension on the head-tape spacing in a cluster head system was made clear.
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  • D6 Format HDTV Digital VCR
    Chosaku Noda, Naoki Endoh, Masahiro Nakashika, Shigeo Kizu
    Article type: Article
    1994 Volume 18 Issue 56 Pages 7-12
    Published: October 21, 1994
    Released on J-STAGE: October 13, 2017
    DOIhttps://doi.org/10.11485/tvtr.18.56_7
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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    The recording density of the D6 format HDTV digital video cassette recorder (VCR) was doubled compared with that of the 1-inch HDTV digital VTR. The recording time of more than one hour was achieved by using D2 cassette housing. Based on the high density recording techniques, we commercialized this VCR with full editing functions, and while maintaining compatibility and sufficient picture quality even in insert editing. This report describes the key techniques in D6 recording format which enables us to apply this VCR to the multiple HDTV standards.
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  • A Deployment of Non-Compressed NTSC Digital Video Disk Recorder-1 : Drive System
    Toru SEKIGUCHI, Kenji TAGAMI, Hiroyuki KOGA, Syunichi MEGURO, Kiyosi H ...
    Article type: Article
    1994 Volume 18 Issue 56 Pages 13-18
    Published: October 21, 1994
    Released on J-STAGE: October 13, 2017
    DOIhttps://doi.org/10.11485/tvtr.18.56_13
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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    A digital video disk recorder which can record non-compressed NTSC digital video signal and 4 channel digital audio signals for 32 minutes has been developed. 0.34μm/bit minimum recording bit length and 123Mbps recording bit rate were performed with φ30cm double-sided MO disk of which track pitch is 1.2μm, 680nm wave length optical heads, and (1,7)RLL code. Additionaly we have realized 23GB data capacity using the CWL-CAV(Constant minimum Wave Length - Constant Angular Velocity) method which can make minimum recording wave length constant in all recording area.
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  • Development of Noncom pressed Digital Magneto-Optical Disk Recorder-2 : signal process
    T. Katagiri, K. Kaketani, S. Kitahara, N. Inohara, H. Satoh, T. Yamamo ...
    Article type: Article
    1994 Volume 18 Issue 56 Pages 19-24
    Published: October 21, 1994
    Released on J-STAGE: October 13, 2017
    DOIhttps://doi.org/10.11485/tvtr.18.56_19
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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    Our newly developped VDR is able to records noncompressed video and 4ch audio signals for 32 minutes into a 300mm in diameter magneto-optical disk using 680nm in wavelength laser diodes. This long time ability only can realize by get both high density and large capacity such as 1.6Gb/In^2 in track pitch of 1.2μm, minimum recording wavelength of 0.34μm/bit and 23GB par disk by keep minimum recording wavelength constant from the innermost to the outermost of the recording track.
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  • [title in Japanese]
    Article type: Appendix
    1994 Volume 18 Issue 56 Pages App1-
    Published: October 21, 1994
    Released on J-STAGE: October 13, 2017
    DOIhttps://doi.org/10.11485/tvtr.18.56_App1
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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