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    <marc:controlfield tag="001">9.879116</marc:controlfield>
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      <marc:subfield code="a">Co23-90/1987E-PDF </marc:subfield>
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    <marc:datafield tag="245" ind1="0" ind2="0">
      <marc:subfield code="a">Discussion paper on the development of implementation strategies for the introduction of advanced television services in Canada.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">[Ottawa] : </marc:subfield>
      <marc:subfield code="b">Department of Communications, Telecommunications Policy Branch, Spectrum and Orbit Policy Directorate, </marc:subfield>
      <marc:subfield code="c">July 1987.</marc:subfield>
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      <marc:subfield code="a">1 online resource (14 pages, 2 unnumbered pages)</marc:subfield>
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      <marc:subfield code="a">computer</marc:subfield>
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      <marc:subfield code="a">online resource</marc:subfield>
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      <marc:subfield code="a">Digitized edition from print [produced by Innovation, Science and Economic Development Canada].</marc:subfield>
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      <marc:subfield code="a">Cover title.</marc:subfield>
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      <marc:subfield code="a">Issued also in French under title: Discussion sur le développement de stratégies d'implantation en vue de l'introduction au Canada des services de télévision de qualité améliorée.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="520" ind1=" " ind2=" ">
      <marc:subfield code="a">"Over the past five years, there has been an increase in activity and interest in advanced television systems related to improvements in picture and sound quality. These new services, often referred to as Enhanced Definition Television (ETV or EDTV) or High Definition Television (HTV or HDTV) may require larger transmission bandwidths than the conventional 6 Megahertz channels and will require new strategies for their future implementation in Canada. This discussion paper is primarily intended to solicit views on a number of issues associated with the future implementation of these systems and to propose to introduce an experimental period over the next three years to stimulate industry systems trials and transmission demonstrations"--Introduction.</marc:subfield>
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      <marc:subfield code="2">gccst</marc:subfield>
      <marc:subfield code="a">Television</marc:subfield>
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      <marc:subfield code="2">gccst</marc:subfield>
      <marc:subfield code="a">Technological innovation</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
      <marc:subfield code="b">Department of Communications.</marc:subfield>
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    <marc:datafield tag="775" ind1="0" ind2="8">
      <marc:subfield code="t">Discussion sur le développement de stratégies d'implantation en vue de l'introduction au Canada des services de télévision de qualité améliorée.</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.881344</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">10.47 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2019/isde-ised/Co23/Co23-90-1987-eng.pdf</marc:subfield>
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