Separate Components Digital Video Recording is Needed and Possible

Author(s): Dominique J. Nasse
Publisher: Society of Motion Picture and Television Engineers
Publication Date: 1 February 1979
Conference Location: San Francisco, CA, USA
Conference Date: 3 February 1979
Page(s): 129 - 138
ISBN (Paper): 978-1-61482-908-9
DOI: 10.5594/M00424



The interest and the feasibility of a digital videotape recorder (DVTR) have already been widely discussed and even demonstrated [1,2]. It is generally agreed that the availability of a practical DVTR is the key point that would make fully digital processing of television pictures a reality. This means that a DVTR should not only satisfy the quality, cost, and operational requirements but also operate with a satisfactory digital standard. The first list of requirements is more or less common to all potential users, although some differences appear in the relative weighting of quality vs. investment and operatioanl costs, for example, between the European and U.S. points of view. But the question of the adequate digitizing standards, which for the 525 NTSC system is mainly a matter of choosing a sampling frequency, happens to be more complicated and should be considered in more detail for 625 systems.